21090.xx (c33003_20 d0) operating instructions
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NTC C33003001PE_B0 � Copyright Nokia Telecommunications Oy
Subrack 19”TF 21090.09
Subrack 19” (EMC)
TF 21090.13TF 21090.19Subrack 19”
Operating Instructions
C33003.20 D0
Subrack 19” Operating Instructions
NTC C33003001PE_B0� Copyright Nokia Telecommunications Oyii
The following products comply with the protection requirements of the European Union Council Directive89/336/EEC relating to electromagnetic compatibility (EMC), provided that installed using EMC-compatibleinstallation practices (installation in mechanical housings stated to be EMC-compatible and using cabling material[at least as well shielded] and practices as stated in relevant Nokia Telecommunications user manuals):
Product code Product name Release
TV 21640.08 Power Interface Adapter (PIA) –20...–72 V (EMC) 02A
TV 21660.01 Power Supply Adapter 19”,1U (PSA) 02A
TV 21630.01 Power Interface Adapter (AC/DC–PIA), 220/110 VAC 48 VDC 01A
TV 21630.51 Power Interface Adapter (AC/DC–PIA), 220/110 VAC 48 VDC 01A
The following products comply with the requirements of the European Union Council Directive 73/23/EEC relatingto electrical equipment designed for use within certain voltage limits:
Product code Product name Release
TV 21630.01 Power Interface Adapter (AC/DC–PIA), 220/110 VAC 48 VDC 01A
TV 21630.51 Power Interface Adapter (AC/DC–PIA), 220/110 VAC 48 VDC 01A
The following mechanical housings are designed for EMC-compatible installations (EMC, ElectromagneticCompatibility). When electrical items (plug-in units, for example) carrying the CE mark on the package are installedinto this mechanical housing according to the installation practices for the housing and the units, the installationas a whole complies with the protection requirements of the European Union Council Directive 89/336/EECrelating to electromagnetic compatibility.
Product code Product name Release
TF 21090.09 Subrack 19” (EMC) 05A
� COPYRIGHT Nokia Telecommunications Oy 1996All rights reserved.No part of this publication may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated intoany human or computer language without the prior written permission of Nokia Telecommunications Oy.
The manufacturer has made every effort to ensure that the instructions contained in the documents are adequate and freeof errors and omissions. The manufacturer will, if necessary, explain issues which may not be covered by the documents.The manufacturer’s liability for any errors in the documents is limited to the correction of errors and the aforementionedadvisory services.
The documents have been prepared to be used by professional and properly trained personnel, and the customer assumesfull responsibility when using them.The manufacturer welcomes customer comments as part of the process of continualdevelopment and improvement of the documentation in the best way possible from the user’s viewpoint. Please submit yourcomments to the nearest Nokia sales representative.
NOKIA and the arrows logo are registered trademarks of Nokia Corporation.
Any other trademarks mentioned in the documents are the property of their respective owners.
Nokia Telecommunications, Network and Access Systems 12.11.1996
NTC C33003001PE_B0 � Copyright Nokia Telecommunications Oy iii
THESE OPERATING INSTRUCTIONS PROVIDE INFORMATION ON THEINSTALLATION AND COMMISSIONING OF THE FOLLOWING PRODUCTS:
TF 21090.09 Subrack 19” (EMC)TF 21090.19 Subrack 19”TF 21090.13 Subrack 19” without CoverTX 21090/.29 Air Deflector for Subrack 19”TX 21090/.39 Air Deflector, Fixed onto 19” SubrackTX 21090.02 Wall Mounting Accessories for 19” SubrackTX 21090.03 Mounting Accessories for 19” PSA and Air DeflectorTX 21090.04 Mounting Accessories for 19” PSATX 21090.06 Mounting Accessories for 19” Frame to 500 mm RackTX 21090.45 Mounting Accessories for 19” Air DeflectorTX 21090.65 Brackets of 19” PSA/Air Deflector into ETSI RackTX 21652.10 T4E Accessories for 19”TX 21652.20 T4E Front Cover, EMC 19”
Accessories for signal cabling
TX 21470 Connector 3x7TX 21470.01 Connector 2x7+2TX 21470.02 Connector 2x7+2 with Strain ReliefTX 21472 Connector 3x32TX 21474 Connector 2x32TX 21475 SMB connector for RG 179 CableTX 21480 Cabling Card Set DMTX 21481 Branching Set for Pair CablesTX 21490 Wrist Strap for Grounding
Power supply and bus cabling
TV 21660/.01/.09 Power Supply Adapter 19”, 1 U (PSA)TV 21612.01 2 A SwitchTV 21613.01 5 A SwitchTV 21661.01 Flat Cable Bus A for PSA 19”TV 21661.02 Flat Cable Bus B for PSA 19”TV 21640.08 Power Interface Adapter (PIA, EMC)TV 21634 Power Supply LineTV 21630.01/.51 AC/DC Power Interface Adapter (AC/DC–PIA),
220/110 V AC / 48 V DCTV 21631 Mains cord, 2 m, 90 degrees downwardsTV 21642.01 Flat Cable Bus A for PIA in 19” SubrackTV 21642.02 Flat Cable Bus B for PIA in 19” Subrack
Subrack 19” Operating Instructions
NTC C33003001PE_B0� Copyright Nokia Telecommunications Oyiv
Document HistoryDocument Date Comment
C33003001PE_00 30.04.1992
C33003001PE_A0 25.03.1996 Instructions related to EMC added and picturesmodified
C33003001PE_B0 12.11.1996 The appended TV 21630.01/.51 Operating In-structions updated.
NTC C33003001PE_B0 � Copyright Nokia Telecommunications Oy v
Contents
1 General Description DTM40–1254–SEC1
2 Installation DTM40–1255–SEC1
3 Appendices DTM40–1332–LED1
Subrack 19” Operating Instructions
NTC C33003001PE_B0� Copyright Nokia Telecommunications Oyvi
Glossary
NTC C33003001PE_B0 � Copyright Nokia Telecommunications Oy Glossary-1
Glossary
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Product code Product name Release
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NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy
TV 21640.08POWER INTERFACE ADAPTER (PIA),
–20...–72 VDC (EMC)
Operating Instructions
C33301.20 B0
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oyii
The following products comply with the protection requirements of the European Union Council Directive89/336/EEC relating to electromagnetic compatibility (EMC), provided that installed using EMC-compatibleinstallation practices (installation in mechanical housings stated to be EMC-compatible and using cabling material[at least as well shielded] and practices as stated in relevant Nokia Telecommunications user manuals):
Product code Product name Release
TV 21640.08 Power Interface Adapter (PIA), –20...–72 V DC (EMC) 02A
� COPYRIGHT Nokia Telecommunications Oy 1996All rights reserved.No part of this publication may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated intoany human or computer language without the prior written permission of Nokia Telecommunications Oy.
The manufacturer has made every effort to ensure that the instructions contained in the documents are adequate and freeof errors and omissions. The manufacturer will, if necessary, explain issues which may not be covered by the documents.The manufacturer’s liability for any errors in the documents is limited to the correction of errors and the aforementionedadvisory services.
The documents have been prepared to be used by professional and properly trained personnel, and the customer assumesfull responsibility when using them.The manufacturer welcomes customer comments as part of the process of continualdevelopment and improvement of the documentation in the best way possible from the user’s viewpoint. Please submit yourcomments to the nearest Nokia sales representative.
NOKIA and the arrows logo are registered trademarks of Nokia Corporation.
Any other trademarks mentioned in the documents are the property of their respective owners.
Nokia Telecommunications, Network and Access Systems 23.04.1996
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy iii
Document HistoryDocument Date Comment
C33301001SE_A0 23.04.1996
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oyiv
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy v
Contents
Chapter 1General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2Construction 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Interfaces for Central Battery, Ringing and Criterion Voltages 6. .
3.2 Alarms 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Interface for Service Terminal Battery Charging 7. . . . . . . . . . . . .
3.4 Power Supply of PIA Unit 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Capacitors 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 4Installation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 Installation Methods 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Installation Stages 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Central Battery Interface Connection 12. . . . . . . . . . . . . . . . . . . . . . .
4.4 Connection of Ringing and Criterion Voltage Interface 14. . . . . . . .
4.5 Bus A 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.6 Bus B 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7 Alarm Interface Connection 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8 Grounding 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5Technical Specifications 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AppendixTV 21634 Power Supply Line
Operating Instructions DTM40–0452–SEA2
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oyvi
General
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 1
Chapter 1General
The Power Interface Adapter (PIA) serves as an interface point for the central bat-tery voltages, ringing and criterion voltages, and alarms when Nokia’s ND gener-ation equipment is installed into wall mounting shelves or mounting frames.
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy2
Construction
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 3
Chapter 2Construction
The PIA unit is 6 U high and 8 T wide.
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Figure 1 PIA unit
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy4
F1 Fuse for criterion voltage line 1 (B1), slow 2.5 A
F2 Fuse for criterion voltage line 2 (B2), slow 2.5 A
F3 Fuse for ringing voltage line (RG2), slow 0.63 A
F4 Fuse for ringing voltage line (RG1), slow 0.63 A
F5 Fuse for central battery voltage to be connected throughEuroconnector P3, slow 2.5 A
F6 Fuse of connector P6 for the Service Terminal battery charging, slow 1 A
J1/P1 Connector for central battery, ringing and criterion voltages
J2...4 Connectors for selecting central battery interface connections
J7/P7 Connector for relay–output alarm interface
P3 Connector for flat cable bus A
P4 Connector for flat cable bus B
P5 Connector for connecting the PIA unit to the motherboard of theequipment cartridge
P6 Connector for the Service Terminal battery charging
NR1 Measuring point for DC/DC power supply (+5 V)
NR2 Terminal strip for alarm mode selection by strappings
VDR6 Location of the varistor for filtering possible voltage transients in theringing voltages coming from outside the unit
Operation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 5
Chapter 3Operation
+12 V
+5 V
CONNECTORFOR SERVICE TERMINALBATTERYCHARGING
HOLD TIME
FUSES FORCRITERIONANDRINGINGVOLTAGES
CENTRALBATTERYVOLTAGES
RINGINGCONNECTOR
DC/DC
AUXILIARYVOLTAGES
OVERVOLT–AGE PRO–TECTION AND
SWITCH
ALARMLEDs A, BAND D
ALARMRELAYOUTPUTS
EURO–CONNECTORFOR BUSES
FLATCABLECONNECTOR(10–POLE)
FLATCABLECONNECTOR(4–POLE)
BUS A
BUS B
FILTERING A AND BANDCRITERIONVOLTAGES
Figure 2 Block diagram of PIA unit
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy6
3.1 Interfaces for Central Battery, Ringing and Cri-terion VoltagesTwo actual battery voltages and a reserve battery voltage can be connected to thePIA unit. The two battery voltages are combined by diodes in the unit. The centralbattery voltage can vary within –20...–72 V DC.
The central battery voltages are connected to the units via the protective switch ofthe PIA unit, the bus A and the motherboard of the equipment cartridge. Theswitch also provides overcurrent protection.
Through the PIA unit, the central battery voltage can be connected to one to threeequipment cartridges, depending on the loads of the units. If the central batteryvoltage is connected through the flat cable bus A and connector P3, the total cur-rent consumption of the units can be 4 A at the maximum, and if it is connectedthrough the bus A at the Euroconnector P5, the total current consumption of theunits can be 2.2 A at the maximum.
The ringing and criterion voltages required in signalling equipment use are con-nected to the units via the fuses and either the flat cable bus B or the bus B at theEuroconnector P5.
3.2 AlarmsThe alarm relays and LEDs in the PIA unit are controlled from the unit cards in theequipment cartridges. The alarm controls are transmitted via the bus A.
The purpose of the alarm LEDs is to give a visual indication of the cartridge ormounting frame in which the faulty unit is located. The red LED indicates anA–alarm, the yellow LEDs indicate B– and D–alarms.
An alarm state can be transferred to the centralized alarm monitoring system aseither a ground contact or current loop. The selection is performed by jumperstrappings.
If battery voltages are cut off, an A–alarm is obtained via the relay, and if thereserve battery voltage is connected, the red alarm LED A will also be lit.
If the +5 V auxiliary voltage of the power supply in the PIA unit becomes faulty, aB–alarm is obtained.
Operation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 7
PIA UNIT
VPB
DC
DC
VPBRVNBR
+5 VGND
A
B
D
AA a
A
B
D
+5 V+12V
EQUIPMENT CARTRIDGE
A
B
D
+5 V
PA1
PA2
GND
aa b
A B D
aa b d 1 2 3
6 5
BUS A
BODY
d
NR2
D A B
ALARM LEDs
ALARMRELAY OUTPUTS
Alarm/ground contact/with jumpersAlarm/current loop/without jumpers
UNIT
Figure 3 Principle of alarm connection
3.3 Interface for Service Terminal Battery ChargingA battery voltage is obtained from connector P6 for charging the Service Terminalbattery via fuse F6. Connector pin a3 is positive and c3 negative.
The power supply unit of the Service Terminal is able to charge the batteries at thebattery voltage range –20...–72 V DC.
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy8
3.4 Power Supply of PIA Unit
INPUTVOLTAGE
OUTPUTVOLTAGESFUSIBLE
RESISTOR
CONTROLFEED–
BACK
Figure 4 Principle of PIA unit power supply
The PIA unit contains a power supply unit which generates an auxiliary voltagefor the units and a voltage for the alarm LEDs and relays of the PIA unit. By meansof the auxiliary voltage, a unit can also give a visual alarm if its own power supplybecomes faulty. If the reserve battery voltage is connected, the power supply of thePIA unit will operate in case the actual battery voltage supply is cut off. The powersupply has been mounted in a metal case in order to attenuate disturbances.
The input voltage range of the power supply is wide (–20...–72 V DC). The pri-mary and secondary voltages of the circuit are galvanically separated from eachother. The switching power supply operates in current mode with a switching fre-quency of approx. 150 kHz.
3.5 CapacitorsThe capacitors in the PIA unit function as an energy store by means of which theequipment-specific power supply units can operate also during short–term volt-age outages. The hold times depend on the loads of the units and the central batteryvoltage. If the total load of the units is 60 W, the hold time with the nominal batteryvoltage of 24 V is 1.4 ms and with the battery voltage of 48 V it is 17 ms.
Installation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 9
Chapter 4Installation
1110
987654321
P3
J2
J3
J4
P5
P4
J7
P6
Connector for flat cable bus A
Connector for central battery,ringing and criterion voltages
Connector for flat cable bus B
Connector for Service Terminalbattery charging
Connector for Euro–connector buses A and B
Selection of central batteryinterface
Relay outputalarm interface
Selection of alarm mode
Location of VDR6
Figure 5 Interfaces and settings of PIA unit
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy10
4.1 Installation MethodsThe PIA unit can be installed into:
� a separate PIA cartridge TF 21466 (10 T)
� the same equipment cartridge as the telecommunication units.
If the PIA unit is installed into a separate PIA cartridge, connection to the equip-ment cartridges is made through unit connectors P3 and P4 using the flat cablesdelivered along with the unit. The external battery and alarm interfaces can beconnected directly to the PIA unit connectors J1 and J7 without any RFI filters.
If the PIA unit is installed into the same equipment cartridge as the telecommuni-cation units, connection to the units is made via the back connector P5 and themotherboard of the cartridge. No flat cables are connected to the PIA unit. Whenthis installation method is used, the PIA unit feed connections must be shieldedusing the Power Supply Line TV 21634.
In a 20 T equipment cartridge, the PIA unit is mounted furthermost on the left tofacilitate routing of the wires. The unit then takes two 5 T unit locations. In a 40 Tcartridge, the PIA unit can be mounted also in the fourth unit location, in whichcase it takes only one unit location of the cartridge.
In the wall mounting shelves, the PIA unit is always installed in the equipmentcartridge. If the PIA unit is used for feeding several cartridges, Wall InstallationBuses A and B, TV 21635 and TV 21636, are to be used. These are connected tothe connectors at the top edge on the back of the equipment cartridges.
a) b)
Figure 6 PIA unit in a) PIA cartridge b) 20 T equipment cartridge
Installation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 11
4.2 Installation Stages� The PIA cartridge or the equipment cartridge is inserted in the mounting
frame or on the wall mounting shelf and fixed with a locking screw.
� The flat cable buses are connected to the connectors of the equipment car-tridges. (On the use of buses, refer to sections 3.5 and 3.6).
� The required settings are made on the PIA unit:
� The connection of the relay output alarms is selected by terminal stripNR2. (On the connection of alarms, refer to section 3.7).
� Connection of supply voltages is selected by shorting parts of connec-tors J2...J4 (refer to sections 3.3 and 3.4).
� Fuses F1...F3 are changed if required.� Varistor VDR6 is added if required.
� The power supply lines, if they are to be used, are mounted on the groundingplate of the equipment cartridges (refer to Operating Instructions for thePower Supply Line appended to these instructions).
� The screw part of the PIA unit connector J7 is detached and the conductors ofthe alarm circuit (the PIA unit in a separate PIA cartridge) or the Power Sup-ply Lines (the PIA unit in the equipment cartridge) are connected to it.
� The PIA unit in placed on the unit guides, the screw part of the connector J7 isattached, the possible flat cable buses are connected and the unit is inserted inits place in the cartridge.
� The screw part of the connector J1 is detached and the supply lines (PIA in aseparate PIA cartridge) or the Power Supply Lines (PIA in the equipment car-tridge) are connected.
� The alarm lines and supply voltages are connected to the cable terminal con-nectors of the Power Supply Lines.
� The screw part of the connector J1 is attached to its place.
Caution The PIA unit must not be removed from the cartridge with the volt-ages connected to it because of the short–circuit risk. The batteryfeeding must always be disconnected by removing the screw partof the connector J1.
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy12
4.3 Central Battery Interface ConnectionThe central battery voltages are connected to the connector J1 and the differentconnection alternatives of the interface are selected by the shorting parts of theconnectors J2...J4. Figures 7 and 8 show two examples.
It is recommended that the distribution network of the central battery voltage be afloating network with a high resistance. A high-resistance network is one wherethe resistance of the feed line is at least 50 mohm.
The polarity of the battery interface is negative and the cross-sectional area of thelines must be < 1.5 mm2.
Pin Configuration of Connector J111 VPBR reserve battery voltage, (+)
10 VPB2 central battery voltage, battery 2 (+)
9 VPB1 central battery voltage, battery 1 (+)
8 B1 criterion voltage 1
7 VNBR reserve battery voltage, (–)
6 diode by-pass
5 VNB2 central battery voltage, battery 2 (–)
4 VNB1 central battery voltage, battery 1 (–)
3 B2 criterion voltage 2
2 RG1 ringing voltage, line 1
1 RG2 ringing voltage, line 2
Installation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 13
11
10
9
8
7
6
5
4
3
2
1
VPBR
VPB1
VPB2
B1
VNBR
VNB2
VNB1
B2
RG1
RG2
DC/DC
> VPB
PIA UNITPOWER SUPPLY
> B1
> B2
> RG1
> RG2
> VNB
J2
J3
J4
Figure 7 – one or two battery voltages– no reserve battery voltage– criterion voltage from battery 1
11
10
9
8
7
6
5
4
3
2
1
VPBR
VPB1
VPB2
B1
VNBR
VNB2
VNB1
B2
RG1
RG2
DC/DC
> VPB
PIA UNITPOWER SUPPLY
> B1
> B2
> RG1
> RG2
> VNB
J3
J4
J2
Figure 8 – one or two battery voltages– separate floating reserve battery voltage– separate floating criterion voltage
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy14
4.4 Connection of Ringing and Criterion VoltageInterfaceAn external ringing voltage can be connected to the connector J1. Its voltagetransients can be filtered by installing an appropriate varistor at location VDR6 onthe PCB.
A separate floating criterion voltage can also be brought to the connector J1 or itcan be derived from the battery voltage 1.
Figures 7 and 8 show connection examples.
4.5 Bus AThrough bus A, the battery voltage and the auxiliary voltage of +5 V are connectedfrom the PIA unit to the motherboards of the equipment cartridges. The alarm con-trols are also conveyed in bus A from the units to the PIA unit.
In a wall mounting shelf or mounting frame where only one equipment cartridge isused, bus A is connected to the units via Euroconnector P5 of the PIA unit andmotherboard of the equipment cartridge. When several equipment cartridges areused, a 10–pole flat cable is required for connecting bus A to the units via con-nector P3 of the PIA unit and the motherboards of the equipment cartridges.
Bus A at Euroconnector P5ac31 VPB central battery voltage (+)ac30 VNB central battery voltage (–)ac22 VAP5 auxiliary voltage +5 Va21 D D–alarm controla20 B B–alarm controla19 A A–alarm control
Pin Configuration of Flat Cable Bus A1...3 VPB central battery voltage (+)4...6 VNB central battery voltage (–)7 VAP5 auxiliary voltage +5 V8 D D–alarm control9 B B–alarm control10 A A–alarm control
Installation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 15
By means of the flat cable bus A delivered with the PIA unit, connection can bemade to three equipment cartridges in a mounting frame.
When installing wall mounting shelves on top of each other or side by side, a sep-arate wall installation bus A is required.
400
800
CONNECTOR TOPIA UNIT
200200
600
FLAT CABLE BUS A OF PIA UNIT
WALL INSTALLATION BUS A (TV 21635)
Figure 9 Flat cable buses A
A
Figure 10 Flat cable bus A in mounting frame
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy16
4.6 Bus BThrough bus B, the ringing and criterion voltages required in signalling equip-ment use are connected from the PIA unit to the motherboards of the equipmentcartridges.
In a wall mounting shelf or mounting frame where only one equipment cartridge isused, bus B is connected to the units via Euroconnector P5 of the PIA unit and themotherboard of the equipment cartridge. When several equipment cartridges areused, a 4–pole flat cable is required for connecting bus B to the units via connectorP4 of the PIA unit and the motherboards of the equipment cartridges.
Bus B at Euroconnector P5ac29 B2 criterion voltage 2ac28 B1 criterion voltage 1ac27 RG2 ringing voltage, line 2ac26 RG1 ringing voltage, line 1
Pin Configuration of Flat Cable Bus B1 B2 criterion voltage 22 B1 criterion voltage 13 RG2 ringing voltage, line 24 RG1 ringing voltage, line 1
By means of the flat cable bus B delivered with the PIA unit, connection can bemade to three equipment cartridges in a mounting frame.
When installing wall mounting shelves on top of each other or side by side, a sep-arate wall installation bus B is required.
500
900
CONNECTOR TOPIA UNIT
200200
600
FLAT CABLE BUS B OF PIA UNIT
WALL INSTALLATION BUS B (TV 21636)
Figure 11 Flat cable buses B
Installation
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 17
4.7 Alarm Interface ConnectionThe relay–output alarm can be connected to the centralized alarm monitoring sys-tem through the screw connector J7 in the PIA unit. The cross-sectional area of theline must be 0.5...1 mm2.
6
5
4
3
2
1
1
2
3
4
5
6
A
B
D
NR2VPB
GND
P7 J7
Alarm / Ground / with jumpersAlarm / Current loop / without jumpers
Figure 12 Alarm interface
The alarm can be transferred as either a ground contact or a current loop. Theselection is made by jumper strappings in the terminal strip NR2.
4.8 GroundingThe PIA unit is grounded to the mechanical construction via the cartridge mother-board.
The PIA cartridge is grounded to the mechanical construction by means of itsgrounding spring and locking screw.
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy18
Technical Specifications
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 19
Chapter 5Technical Specifications
PIA UnitHeight 6 U (233.4 mm)
Width 8 T (40.6 mm)
Depth 160 mm
Central battery input voltage range –20...–72 VDC
Maximum current when using flat cable bus A 4 A
Maximum current whenusing Euroconnector bus A 2.2 A
Overcurrent protection switch 5 A
Maximum current of ringing voltage 1 A
Maximum current of criterion voltage 2.5 A
Tolerance for voltage transientsas measured at the input of PIA unit according to Figure 13
Power Supply of PIA UnitInput voltage range –20...–72 VDC
Maximum input power 3.5 W
Output voltages and currents + 5 V � 5 %, 500 mA
Isolation voltages
� input – output 200 VDC
� input – body 200 VDC
Disturbances at the input of the PIA unit caused by the power supply C.I.S.P.R. 22 class B
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy20
Tolerance for disturbances as measuredat the input of the PIA unit:
� wide-band 0.5 % of effectivenominal DC voltage
� narrow-band 0...3 kHz, 200 mVrms3...150 kHz, 45 mVrms0.15...30 MHz, 10 mVrms
Tolerance for voltage transients asmeasured at the input of the PIA unit according to Figure 13
( V )
2 k
1 k
500
200
100
50
20
10
10–6
2 5 10 2 5 10 2 5 10 2 5 10 2 5 10 2 5 10 ( s )–5 –4 –3 –2 –1 o
Figure 13 Tolerance for voltage transients of the power supply as measured atthe PIA unit input when the supply line resistance is at least 50 m�
Technical Specifications
NTC C33301001SE_A0 � Copyright Nokia Telecommunications Oy 21
Relay-Output Alarm InterfaceMaximum switching currents at different voltages:
UDC 24 V 48 V 72 V
IDC(resistive load) 1.3 A 0.6 A 0.4 A
IDC(inductive load) 0.4 A 0.2 A 0.15 A
Maximum resistance of the interface with the relay contacts closed 0.5 �
Minimum resistance of the interface with the relay contacts open 1 M�
Tolerance for voltage transients when the pulse length is less than 1 s 220 V
PIA CartridgeHeight 7 U
Width 10 T
Depth 219 mm
TV 21640.08 Operating Instructions
NTC C33301001SE_A0� Copyright Nokia Telecommunications Oy22
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NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy
TV 21630.01/.51AC/DC POWER INTERFACE ADAPTER (AC/DC PIA),
220 V AC/48 V DC
Operating Instructions
C33392.20 B0
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oyii
The following products comply with the protection requirements of the European Union Council Directive89/336/EEC relating to electromagnetic compatibility (EMC), provided that installed using EMC-compatibleinstallation practices (installation in mechanical housings stated to be EMC-compatible and using cabling material[at least as well shielded] and practices as stated in relevant Nokia Telecommunications user manuals):
Product code Product name Release
TV 21630.01 AC/DC Power Interface Adapter, 220 V AC/48 V DC 01A
TV 21630.51 AC/DC Power Interface Adapter, 220 V AC/48 V DC 01A
The following products comply with the requirements of the European Union Council Directive 73/23/EEC relatingto electrical equipment designed for use within certain voltage limits:
Product code Product name Release
TV 21630.01 AC/DC Power Interface Adapter, 220 V AC/48 V DC 01A
TV 21630.51 AC/DC Power Interface Adapter, 220 V AC/48 V DC 01A
� COPYRIGHT Nokia Telecommunications Oy 1996All rights reserved.No part of this publication may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated intoany human or computer language without the prior written permission of Nokia Telecommunications Oy.
The manufacturer has made every effort to ensure that the instructions contained in the documents are adequate and freeof errors and omissions. The manufacturer will, if necessary, explain issues which may not be covered by the documents.The manufacturer’s liability for any errors in the documents is limited to the correction of errors and the aforementionedadvisory services.
The documents have been prepared to be used by professional and properly trained personnel, and the customer assumesfull responsibility when using them.The manufacturer welcomes customer comments as part of the process of continualdevelopment and improvement of the documentation in the best way possible from the user’s viewpoint. Please submit yourcomments to the nearest Nokia sales representative.
NOKIA and the arrows logo are registered trademarks of Nokia Corporation.
Any other trademarks mentioned in the documents are the property of their respective owners.
Nokia Telecommunications, Network and Access Systems 13.09.1996
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy iii
Document HistoryDocument Date Comment
C33392001SE_00 08.02.1996
C33392001SE_A0 13.09.1996 Paragraph about EMC installations added toChapter 1. M80 references deleted.
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oyiv
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy v
Contents
Chapter 1General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2Construction 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Interfaces for Back-Up and/or Reserve Battery Voltages,
Ringing and Criterion Voltages 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Back-Up Battery Selection 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Alarms 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Interface for Service Terminal Battery Charging 8. . . . . . . . . . . . .
3.5 AC-Low Indication (TV 21630.51 only) 8. . . . . . . . . . . . . . . . . . . . .
3.6 AC/DC Power Supply 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 DC/DC Power Supply of the AC/DC PIA Unit 9. . . . . . . . . . . . . . . .
3.8 Hold-Up Time 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 Power LED 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 4Installation 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 Battery Interface Connection 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Connection of Ringing and Criterion Voltage Interface 13. . . . . . . .
4.3 Bus A 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Bus B 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5 Alarm Interface Connection 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TV 21630.01/.51 Operating Instructions
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4.6 Settings of Power LED 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7 Grounding 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5Technical Specifications 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 1
Chapter 1General
The AC/DC Power Interface Adapter (AC/DC PIA) serves as an interface pointfor mains voltages, ringing and criterion voltages, and alarms when Nokia NDgeneration equipment is installed into wall mounting shelves or mounting frames.
The voltage fed to the transmission equipment is the output voltage of the AC/DCpower supply in the unit. The nominal output voltage of the AC/DC power supplyis 48 VDC but its adjustment range is 43...60 VDC. If a back-up battery is used, theoutput voltage is adjusted to match the back-up battery voltage.
It is possible to charge only one battery from the AC/DC power supply, owing tothe separating diodes on the AC/DC PIA unit.
The AC/DC PIA is switched on and off by plugging the mains cable to the unit ordetaching it.
Important!
This unit can only be plugged to an outlet with protected earth contacts.
In EMC installations AC/DC PIA (TV 21630.01 / TV 21631.51) must not beinstalled to equipment cartridge containing other equipment. In order to fulfill theEMC requirements the PIA unit must be installed using the 10 T PIA Cartridge(TF 21466.09) or a separate 20 T EMC cartridge (housing only the PIA Unit).
Note 1. Before connecting the mains voltage to the unit, check that theinput voltage selector is set correctly 220 VAC.
2. Start-up of the unit takes a few seconds.
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy2
Construction
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 3
Chapter 2Construction
The AC/DC PIA unit is 6 U high and approximately 9 T wide.
POWER SUPPLY
P3
J1 P1
P4
J2
J3 J4
J7/P7NR2
P5
P6
F4
ALARM LEDsABD
F3
F2F1
F5
NR1P
MAINS INPUT
1110987654321
123456
654321
VDR6
D1 D2
41
Test points:+
0 V+
12V
5 V
AC/DC-(RT1)
(RT2)
Power LED
5 4
ËËËË
DC/DCHYBRID(POWERSUPPLY)
ALARMHYBRID1
10
Figure 1 AC/DC PIA unit
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy4
Fuses:F1 Fuse of connector P6 for the Service Terminal battery charging, slow 1 A
F2 Fuse for ringing voltage line (RG1), slow 0.63 A
F3 Fuse for criterion voltage line 2 (B2), slow 2.5 A
F4 Fuse for criterion voltage line 1 (B1), slow 2.5 A
F5 Fuse for battery voltage to be connected through Euroconnector P5,slow 2.5 A.
Connectors:J1/P1 Connector for back-up and/or reserve battery, ringing and criterion
voltages and boost control
J2...4 Connectors for selecting back-up and/or reserve battery and criterionvoltage interface connections
J7/P7 Connector for relay-output alarm interface
P3 Connector for flat cable bus A
P4 Connector for flat cable bus B
P5 Connector for connecting the AC/DC PIA unit to the motherboard of theequipment cartridge
P6 Connector for the Service Terminal battery charging.
Terminal blocks:NR1P Test point for +5 V and +12 V output voltages of the DC/DC power
supply (GND in the middle). Protected against accidental shorting.
NR2 Terminal block by whose strappings the alarm mode for the relay outputsis selected.
Operation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 5
Chapter 3Operation
+12 V
+5 V
BACKUPAND/OR
VOLTAGESCONNECTOR
DC/DC
BUS A
BUS B
BATTERY
AC/DCPOWER
MAINS
220 V AC
J1/P1
P3
P4
RESERVE
SUPPLY
P5
AUXILIARYVOLTAGES
POWER ALARMHYBRID(LIMITS)
ALARMLEDs A, BAND D
ALARMRELAYOUTPUTS
EURO-CONNECTORFOR BUSES
FLATCABLECONNECTOR(10-POLE)
FLATCABLECONNECTOR(4-POLE)
CONNECTORFOR SERVICETERMINAL
FUSES FORCRITERIONANDRINGINGVOLTAGES
OVERVOLTAGE
RINGINGANDCRITERION
J7/P7
48 V DC
P6
VOLTAGES
SUPPLY
(HYBRID)
PROTECTION
BATTERYCHARGING
A AND B
48 V DC
BOOST
BOOST CONTROL
Figure 2 Block diagram of AC/DC PIA unit
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy6
3.1 Interfaces for Back-Up and/or Reserve BatteryVoltages, Ringing and Criterion VoltagesTwo actual battery voltages and a reserve battery voltage can be connected to theAC/DC PIA unit. The two battery voltages are combined by diodes in the unit.When the actual battery voltages are used at the same time, both positive pole con-ductors must be attached to the same point, i.e. to J1/10 because J1/9 is used foranother purpose.
There are no fuses for external batteries in the unit, and therefore a separate fusemust be installed for each battery.
The generated (and possibly battery-protected) voltages are connected to the unitsvia bus A and the motherboard of the equipment cartridge. Both the AC/DC powersupply and the DC/DC power supply (+5 V) provide overcurrent protection.
The output voltage generated in the AC/DC PIA unit can be connected to 1...3equipment cartridges, depending on the loads of the units.
The ringing and criterion voltages required in signalling equipment use are con-nected to the units via the fuses and either the flat cable bus B or bus B at Eurocon-nector P5.
3.2 Back-Up Battery SelectionThe nominal voltage of the battery system shall be 48 V. A system where fourpieces of 12 V batteries are connected in series is suitable. A sealed lead acid bat-tery is recommended as it is easy to use and needs no maintenance.
The following rule of thumb can be used as a basis for defining the capacity of theback-up battery: the maximum charging current is one tenth of the batterycapacity in amperes. As the maximum current obtained from the power supplies is1.8 A, the capacity of the battery is 18 Ah.
The capacity of the battery can be even greater. If a battery system with lowercapacity is desired, it should be made sure that the charging current is not too high.Normally, most of the current obtained from the power supply is consumed by theequipment itself, whereas the battery receives only a fraction of the current. Theequipment consumes most of the current, because the DC/DC power supplies areable to operate even with lower voltages than the battery voltage. Thus also small-sized and low-capacity batteries (e.g. 4 x 12 V 1.2 Ah) can be used after checkingthe correct charging current.
Note Do not forget to install a suitable fuse to the battery cable!
3.3 AlarmsThe alarm relays and LEDs in the AC/DC PIA unit are controlled from the unitcards in the equipment cartridges. The alarm controls are transmitted via bus A.
Operation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 7
The purpose of the alarm LEDs is to give a visual indication of the cartridge ormounting frame in which the faulty unit is located. The red LED indicates anA-alarm, the yellow LEDs indicate B- and D-alarms.
From the relays an alarm state can be transferred to the centralized alarm monitor-ing system as either a ground contact or current loop. The selection is performedby jumper strappings (NR2). See Figure 3.
If the 48 V voltage is cut off, an A-alarm is obtained via the relay, and if the reservebattery voltage is connected, the red alarm LED A will also be lit.
If the +5 V auxiliary voltage of the power supply in the AC/DC PIA unit becomesfaulty, a B-alarm is obtained. If the +12 V of the power supply becomes faulty, anA-alarm is obtained but the alarm LED will not be lit.
AC/DC PIA UNIT
VPB
DC
DC
VPBRVNBR
+5 VGND
A
B
D
AA a
A
B
D
+5 V+12V
EQUIPMENT CARTRIDGE
A
B
D
+5 V
PA1
PA2
GND
aa b
A B D
aa b d 1 2 3
6 5
BUS A
BODY
d
NR2
D A B
MAINS
ALARM LEDs
ALARMRELAY OUTPUTS
Alarm/ground contact/with jumpersAlarm/current loop/without jumpers
UNIT
AC/DC
Figure 3 Principle of alarm connection
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3.4 Interface for Service Terminal Battery ChargingA battery voltage is obtained from connector P6 for charging the Service Terminalbattery via fuse F1. Connector pin a3 is positive and c3 negative.
The power supply unit of the Service Terminal is able to charge its batteries frominput voltages of –20...–72 VDC.
3.5 AC-Low Indication (TV 21630.51 only)The AC-Low monitor circuit (ACL) is used to supervise the mains input voltage.Rectified and filtered mains voltage is compared with a reference voltage. Thecomparator output controls an optocoupler, which provides high isolationvoltage. Hysteresis of the comparator prevents oscillation.
The user can adjust the voltage at which the ACL operates (potentiometer RT1 onthe component board of the AC-Low monitor). The suitable value of the voltagedepend on the nominal value, accuracy and quality of the mains voltage.
The AC-Low indication output can be used for an external alarm logic or relay.The maximum current from the optocoupler output transistor is approximately 0.2A and the breakdown voltage is 32 V. The collector of the optocoupler is internallyconnected to the positive voltage of the power supply. The emitter is connected tothe output pin 6/J1 in the AC / DC PIA unit. See principle in Figure 4.
The alarm limit is set at the factory to 183 VAC �1 % and the hysteresis is 7 V, sothe alarm will expire at 190 VAC.
Electrical specifications:
� allowable input voltage range 0...400 VDC
� operating point adjustment range 245...310 VDC(corresponding 174...220 VAC)
–24 V
Externalalarm/controlcircuit
AC / DC PIA
6/J1
Figure 4 Principle of AC-Low alarm connection
Operation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 9
3.6 AC/DC Power SupplyThe AC/DC power supply unit is operating in a switching mode principle andcontrolled with the pulse width modulation. This power supply converts the mainsvoltage 220 VAC to a DC voltage, which nominal value is 48 V. The input isprovided with an EMI filter and a varistor (VDR) to attenuate disturbances and toprovide overvoltage protection. An NTC resistor rejects the inrush current at astart-up.
It is possible to adjust the output voltage by potentiometer RT1 from 43 V to 60 V,approximately. The potentiometer is inside of the power supply metal case, seeFigure 1. The output voltage is set to 54 V at the factory to suit the sealed lead acidbatteries which are normally used.
The unit is provided with a facility named ”Boost operation” for faster charging ofbatteries after a mains failure. The operation increases the output voltage of thepower supply to approx. 60 V. The voltage is dependent on the positions ofpotentiometers RT1 and RT2. The voltage is adjusted to the desired value by RT2after the normal voltage is first set by RT1. The operation is activated byinterconnecting pins 10 and 9 of the AC/DC PIA connector J1, which causes thepositive pole of the power supply to be connected to the Boost line.
The output voltage slightly changes as the output current changes. This enablesparalleling of the AC/DC PIA units when required.
3.7 DC/DC Power Supply of the AC/DC PIA Unit
INPUTVOLTAGE
OUTPUTVOLTAGESFUSIBLE
RESISTOR
CONTROLFEED–
BACK
Figure 5 Principle of the DC/DC power supply in AC/DC PIA
The AC/DC PIA unit contains a power supply unit which generates an auxiliaryvoltage +5 V for the units and a +12 V voltage for the alarm LEDs and relays ofthe AC/DC PIA unit. By means of the auxiliary voltage, a unit can also give avisual alarm if its own power supply becomes faulty. If the reserve battery voltageis connected, the DC/DC power supply will also operate in case the actual batteryvoltage supply is cut off.
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy10
The input voltage range of the power supply is wide (–20...–72 VDC). The primaryand secondary voltages of the circuit are galvanically separated from each other.The switching mode power supply operates in current mode with a switchingfrequency of approximately 300 kHz.
The input of the power supply unit contains a fusible resistor serving as ashort-circuit protector if the power supply unit does not limit the current. Thepower supply is provided with a hybrid circuit containing, among other things, astart-upcircuitry, a pulse-width modulator, and a switching transistor (MOSFET).
3.8 Hold-Up TimeThe energy stored in the input and output capacitors of the AC/DC power supplyprovides a reasonable hold-up time.
3.9 Power LEDThe main circuit board includes a green LED for indicating the operation of theAC/DC power supply. Operation of the LED can be changed by a jumper setting.This jumper setting is also used to select whether the power to the batteries and tothe telecommunications equipment is fed straight or through a separating diode.
Installation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 11
Chapter 4Installation
4.1 Battery Interface ConnectionThe batteries are connected to connector J1 and the different connectionalternatives of the interface are selected by the shorting pieces of connectorsJ2...J4. Figures 6 and 7 show two examples.
Pin Configuration of Connector J111 VPBR Reserve Battery Voltage, Positive pole
10 VPB1 back-up Battery Voltage, battery 1, Positive pole, and possiblyalso battery 2
9 Boost remote control for the output voltage of the AC/DC power supply
8 B1 criterion voltage 1
7 VNBR Reserve Battery Voltage, Negative pole
6 reserved for AC-LOW indication
5 VNB2 back-up Battery Voltage, battery 2, Negative pole
4 VNB1 back-up Battery Voltage, battery 1, Negative pole
3 B2 criterion voltage 2
2 RG1 Ringing voltage (Generator), line 1
1 RG2 Ringing voltage (Generator), line 2
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NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy12
11
10
9
8
7
6
5
4
3
2
1+ –
Back-upbattery
J1 P1
FUSE
OFFON
+
–
LOAD
ac31
–+
1–3 4–6
LOAD
P3
B + –
AC/DCPower
P5
AC/DC PIA
Boost operation
D2
LOAD =
ac30
11
10
9
8
7
6
5
4
3
2
1
telecommunications equipment
Figure 6 Basic use of AC/DC PIA with one back-up battery
11
10
9
8
7
6
5
4
3
2
1
VPBR
VPB1
VPB2
B1
VNBR
VNB2
VNB1
B2
RG1
RG2
DC/DC
> VPB
PIA unitpover
> B1
> B2
> RG1
> VNB
J2
J3
J4
supply
Reservebatteryif required
J1 P1
FUSES
> RG2
+–
Back-upbattery
+ –
Figure 7 Example of battery interface connection– one back-up battery– reserve battery voltage
Installation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 13
4.2 Connection of Ringing and Criterion VoltageInterfaceAn external ringing voltage can be connected to connector J1. Voltage transientsare filtered out by the varistor VDR6. The value of the varistor is 120 V and thevaristor can be replaced by another one if the value does not suit.
A separate floating criterion voltage can also be brought to connector J1 or it canbe derived from the battery voltage 1.
4.3 Bus AThrough bus A, the 48 V supply voltage and the auxiliary voltage of +5 V areconnected from the AC/DC PIA unit to the motherboards of the equipmentcartridges. The alarm controls are also conveyed in bus A from the units to theAC/DC PIA unit.
When only one equipment cartridge is used, bus A is connected to the units viaEuroconnector P5 of the AC/DC PIA unit and motherboard of the equipmentcartridge. When several equipment cartridges are used, a 10-pole flat cable isrequired for connecting bus A to the units via connector P3 of the AC/DC PIA unitand the motherboards of the equipment cartridges.
Bus A at Euroconnector P5ac31 VPB Battery Voltage, Positiveac30 VNB Battery Voltage, Negativeac22 VAP5 Auxiliary Voltage, Positive 5 V
note: ground at pins ac2 and a23
a21 D D-alarm controla20 B B-alarm controla19 A A-alarm control
Pin Configuration of Flat Cable Bus A1...3 VPB Battery Voltage, Positive4...6 VNB Battery Voltage, Negative7 VAP5 Auxiliary Voltage, Positive 5 V8 D D-alarm control9 B B-alarm control10 A A-alarm control
By means of flat cable bus A, delivered with the AC/DC PIA unit, connection canbe made to three equipment cartridges in a mounting frame.
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When installing wall mounting shelves on top of each other or side by side, aseparate wall installation bus A is required.
400
800
CONNECTOR TOPIA UNIT
200200
600
FLAT CABLE BUS A OF PIA UNIT
WALL INSTALLATION BUS A (TV 21635)
Figure 8 Flat cable buses A
P3
P4
NR2NR1P
1
2
3
4
5
6
654321
4
1
10
1
REDMARKWIRE
FLAT CABLE BUS
Figure 9 Connection of flat cable bus to AC/DC PIA connector
Installation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 15
4.4 Bus BThrough bus B, the ringing and criterion voltages required in signallingequipment use are connected from the AC/DC PIA unit to the motherboards of theequipment cartridges.
When only one equipment cartridge is used, bus B is connected to the units viaEuroconnector P5 of the AC/DC PIA unit and the motherboard of the equipmentcartridge. When several equipment cartridges are used, a 4-pole flat cable isrequired for connecting bus B to the units via connector P4 of the AC/DC PIA unitand the motherboards of the equipment cartridges.
Bus B at Euroconnector P5ac29 B2 criterion voltage 2ac28 B1 criterion voltage 1ac27 RG2 Ringing voltage, line 2ac26 RG1 Ringing voltage, line 1
Pin Configuration of Flat Cable Bus B1 B2 criterion voltage 22 B1 criterion voltage 13 RG2 Ringing voltage (Generator), line 24 RG1 Ringing voltage (Generator), line 1
By means of flat cable bus B, delivered with the AC/DC PIA unit, connection canbe made to three equipment cartridges in a mounting frame.
When installing wall mounting shelves on top of each other or side by side, aseparate wall installation bus B is required.
500
900
CONNECTOR TOPIA UNIT
200200
600
FLAT CABLE BUS B OF PIA UNIT
WALL INSTALLATION BUS B (TV 21636)
Figure 10 Flat cable buses B
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4.5 Alarm Interface ConnectionThe relay-output alarm can be connected to the centralized alarm monitoringsystem through screw connector J7 in the AC/DC PIA unit. The cross-sectionalarea of the wire must be 0.5...1 mm�.
6
5
4
3
2
1
1
2
3
4
5
6
A
B
D
NR2VPB
GND
P7 J7
Alarm / Ground contact / with jumpersAlarm / Current loop / without jumpers
Figure 11 Alarm interface
The alarm can be transferred as either a ground contact or a current loop. Theselection is made by jumper strappings in terminal block NR2.
4.6 Settings of Power LEDOperation of the Power LED can be changed by altering the solder jumper settingat solder posts 4 and 5.
P1
J4P5
Ë
123456
654321
ËË
10
1
4
1
Power LED
5 4
Figure 12 Solder posts 4 and 5 on the main circuit board
Installation
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 17
The LED is lit when the AC/DC power supply oper-ates properly or when the external battery is used.
� Factory setting: Jumper wire
5 4
Jumper wire
5 4The LED is lit only when the AC/DC power supplyoperates properly.
Separating diode used:
When the factory setting (1) is used, power is fed to the telecommunicationsequipment and to the batteries so that the separating diode is passed, whereas incase (2) the power is fed via the separating diode.
4.7 GroundingThe AC/DC PIA unit is grounded via the cartridge motherboard to the mechanicalconstruction.
The metal case of the AC/DC power supply is grounded to the protected earth ofthe mains outlet via the mains cord.
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy18
Technical Specifications
NTC C33392001SE_A0 � Copyright Nokia Telecommunications Oy 19
Chapter 5Technical Specifications
AC/DC PIA Unit
Height 6 U (233.4 mm)
Width 9 T (45.8 mm)
Depth 160 mm + connectorsand LED holder
Maximum output power 80 W
Maximum current of ringing voltage 1 A
Maximum current of criterion voltage (see Section 4.2) 2.5 A
AC/DC Power Supply of AC/DC PIA Unit
Mains input voltage range 187...276 VAC
Input fuses (2 pcs) 1.6 A
Inrush current (peak) 12 A
Maximum output power 80 W
Output voltage nominal 48 V
factory setting(recommended whenback-up batteries are inuse)
54 V(output current 1.4 A)
adjustment range(control with an externalvoltage 0...7.5 VDC) 43...60 V
Overcurrent protection approx. 1.75 A (dependsalso on adjusted outputvoltage)
Efficiency (at nominal load) 82 %
TV 21630.01/.51 Operating Instructions
NTC C33392001SE_A0� Copyright Nokia Telecommunications Oy20
DC/DC Power Supply of AC/DC PIA Unit
Input voltage range –20...–72 VDC
Maximum input power 7 W
Output voltages and currents +12 V ± 10 %,250 mA
+5 V ± 5 %,200 mA
Isolation voltages input to output 200 VDC
input to body 200 VDC
Relay-Output Alarm InterfaceMaximum switching currents at different voltages:
UDC 24 V 48 V 72 V
IDC (resistive load) 1.3 A 0.6 A 0.4 A
IDC (inductive load) 0.4 A 0.2 A 0.15 A
Maximum resistance of the interface with therelay contacts closed
0.5 ohm
Minimum resistance of the interface with therelay contacts open
1 Mohm
PIA Cartridge TF 21466.09
Height 6 U 233.4 mm
Width approx.10 T 56 mm
Depth 219 mm
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Cable type Product code NOKIA code
KLVMAAM 2x(2x0.4+0.4)+0.4 mm TI 22700.1 7130434
KLVMAAM 8x(2x0.4+0.4)+0.4 mm TI 22700.3 7130436
MMHS 2x5x2x0.4+0.4 mm – 7130470
MMHS 4x5x2x0.4+0.4 mm TI 22701.3 7130472
MMHS 2x2x0.4+0.4 mm TI 22701.4 7130474
MMHS 8x5x2x0,4+0,4 mm TI 22701.6 7130480
MMHS 4x2x0.4+0.4 mm TI 22701.41 7136816
MMHS 8x2x0.4+0.4 mm TI 22701.42 7133234
MMHS 2x8x2x0.4+0.4 mm TI 22701.70 7139578
MMHS 4x8x2x0.4+0.4 mm TI 22701.80 7133072
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Connector type Product code
3x7–pin 1/4 Euroconnector TX 21470
2x7+2–pin 1/4 Euroconnector TX 21470.01
2x7+2–pin 1/4 Euroconnector(provided with a separate strain relief)
TX 21470.02
3x32–pin 1/1 Euroconnector TX 21472
2x32–pin 1/1 Euroconnector TX 21474
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Cable type NOKIA code
SUHNER G 02233 7134973
RG 179 B/U (teflon–coated) 7134966
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Connector type Product code
SMB connector for cable RG 179(manufacturer IMS MORAT, type327.11.2420.021)
TX 21475
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Cable type Product code NOKIA code
manufacturer AMGAB TI 22706.1 7134978
RD 179 (teflon–coated) – 7134968
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Connector type Product code
SMB connector for cable RD 179(manufacturer IMS MORAT, type327.11.2420.051)
TX 21475.05
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NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy
TX 21470(.01/.02), TX 21472, TX 21474WIRE–WRAP PAIRED CABLE / EUROCONNECTOR
Work Instructions
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oyii
� COPYRIGHT Nokia Telecommunications Oy 1996All rights reserved.No part of this publication may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated intoany human or computer language without the prior written permission of Nokia Telecommunications Oy.
The manufacturer has made every effort to ensure that the instructions contained in the documents are adequate and freeof errors and omissions. The manufacturer will, if necessary, explain issues which may not be covered by the documents.The manufacturer’s liability for any errors in the documents is limited to the correction of errors and the aforementionedadvisory services.
The documents have been prepared to be used by professional and properly trained personnel, and the customer assumesfull responsibility when using them.The manufacturer welcomes customer comments as part of the process of continualdevelopment and improvement of the documentation in the best way possible from the user’s viewpoint. Please submit yourcomments to the nearest Nokia sales representative.
NOKIA and the arrows logo are registered trademarks of Nokia Corporation.
Any other trademarks mentioned in the documents are the property of their respective owners.
Nokia Telecommunications, Network and Access Systems 10.01.1996
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy iii
Document HistoryDocument Date Comment
DTM40–0271–REB2 04.01.1994
DTM40–0271–REC1 10.01.1996 Instructions on installation revised to ensureEMC-compatible installations.
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oyiv
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy v
Contents
Chapter 1General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2KLVMAAM Cables 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Construction 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Dimensioning and Stripping of Cable 4. . . . . . . . . . . . . . . . . . . . . . .
2.3 Connection of Wires to Connector 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3MMHS Cables 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Construction 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Dimensioning and Stripping of Cable 13. . . . . . . . . . . . . . . . . . . . . . .
3.3 Connection of Wires to Connector 13. . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 4Euroconnectors 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5Using a Grounding Protective Sleeve 19. . . . . . . . . . . . . . . . . . . . . . .
Chapter 6Cable Branching 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oyvi
General
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 1
Chapter 1General
In these instructions, the construction and different work phases for the connec-tion of the NOKIA KLVMAAM and MMHS cables and Euroconnectors recom-mended for the cabling of NOKIA ND generation equipment are described. Morespecific information on connector pin numbers and wire numbers is provided inthe unit–specific connection instructions.
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy2
KLVMAAM Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 3
Chapter 2KLVMAAM Cables
Recommended tool:� Wire–wrapping tool Gardner Denver
� G.D. wrap bit 511250 (NOKIA code 6905461)� G.D. sleeve 507100 (NOKIA code 6905366)
2.1 ConstructionThe constructions of the cables KLVMAAM 2x(2x0.4+0.4)+0.4 mm andKLVMAAM 8x(2x0.4+0.4)+0.4 mm manufactured by NOKIA are shown in Fig-ures 1 and 2. The unit–specific connection instructions are based on these con-structions.
Numbered pair identifiers:1 and 2
Uninsulated ground wire
Ground wireSheathProtective tapeCollective screenPlastic foilGround wirePair screenWire
Wire insulation colours:a = blu, b = wh
.
Figure 1 Construction of cable KLVMAAM 2x(2x0.4+0.4)+0.4 mm(NOKIA code 7130434)
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy4
Numbered pair identifiers:1, 2, 3, 4, 5, 6, 7 and 8
Uninsulated ground wire
WirePair screenGround wireProtective tapeCollective screenProtective tapeSheathGround wire
Wire insulation colours:a = blu, b = wh
Figure 2 Construction of cable KLVMAAM 8x(2x0.4+0.4)+0.4 mm(NOKIA code 7130436)
2.2 Dimensioning and Stripping of Cable� Dimension the cable according to the location of the connector in the unit and
strip the sheath.
� Strip the plastic foil and aluminium belt (see Figure 3).
2.3 Connection of Wires to Connector� Perform the connection in the order specified by the unit–specific connection
instructions.
� Strip the wires to the wire–wrap length (25 mm).
� Connect the wires using the wire–wrap technique.
� Protect the uninsulated wire by a protective sleeve. This sleeve should beslightly overlong to prevent short circuits.
� When the connection is complete, the protective case is pushed into place.Make sure that the pins exit through the correct holes.
� Attach the case to the cable by a cable tie.
� Mark the cable by wire marks delivered with the connector.
KLVMAAM Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 5
1st cut
2nd cut
detach
remove
Figure 3 Stripping of plastic foil and aluminium belt
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy6
MMHS Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 7
Chapter 3MMHS Cables
Recommended tool:� Wire–wrapping tool Gardner Denver
� G.D. wrap bit 506445 (NOKIA code 6905454)� G.D. sleeve 507100 (NOKIA code 6905366)
3.1 ConstructionThe constructions of the MMHS cables manufactured by Nokia are presented inFigures 4 – 10. The unit–specific connection instructions are based on these con-structions.
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy8
Ø 7.3
Sheath
Common screen
Ground wire
Basic unit
Group (Pair)
Auxiliary wire
Marker thread
Wire
Colour coding for
Pair wire a wire b12
bluorn
wht–blu wht–orn
345
grnbrngry
wht–grnwht–brnwht–gry
polarity and pairidentification:
Figure 4 Construction of cable MMHS 4x5x2x0.4+0.4 mm(product code TI 22701.3)
Ø 3.2
Colour coding for
Pair wire a wire b12
bluorn
wht–blu wht–orn
Sheath
Common screen
Ground wire
Group (Pair)
Wirepolarity and pairidentification:
Figure 5 Construction of cable MMHS 2x2x0.4+0.4 mm(product code TI 22701.4)
MMHS Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 9
Protective tape
Ø9.8
Marker thread
Sheath
Common screen
Ground wire
Basic unit
Group (Pair)
Auxiliary wire
Wire
Pair12
bluorn
wht–blu wht–orn
Colour coding forpolarity and pairidentification:
wire a wire b
345
grnbrngry
wht–grn wht–brn wht–gry
Figure 6 Construction of cable MMHS 8x5x2x0.4+0.4 mm(product code TI 22701.6)
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy10
Ø 4.4
Pair12
bluorn
wht–blu wht–orn
Colour coding forpolarity and pairidentification:
wire a wire b
34
grnbrn
wht–grn wht–brn
Protective tape
Sheath
ScreenGround wire
Group (Pair)
Auxiliary wire
Wire
Figure 7 Construction of cable MMHS 4x2x2x0.4+0.4 mm(product code TI 22701.41)
Ø 5.4
Pair12
bluorn
wht–blu wht–orn
Colour coding forpolarity and pairidentification:
wire a wire b
345
grnbrngry
wht–grn wht–brn wht–gry
678
bluorngre
bla–blubla–ornbla–gre
Protective tape
Sheath
ScreenGround wire
Group (Pair)
Auxiliary wire
Wire
Figure 8 Construction of cable MMHS 8x2x2x0.4+0.4 mm(product code TI 22701.42)
MMHS Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 11
Ø 6.8
Pair12
bluorn
wht–blu wht–orn
Colour coding forpolarity and pairidentification:
wire a wire b
345
grnbrngry
wht–grn wht–brn wht–gry
678
bluorngre
bla–blubla–ornbla–gre
Protective tape
Marker thread
Sheath
Common screen
Ground wire
Basic unit
Group (Pair)
Auxiliary wire
Wire
Figure 9 Construction of cable MMHS 2x8x2x2x0.4+0.4 mm(product code TI 22701.70)
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy12
Ø8.9
Pair12
bluorn
wht–blu wht–orn
Colour coding forpolarity and pairidentification:
wire a wire b
345
grnbrngry
wht–grn wht–brn wht–gry
678
bluorngre
bla–blubla–ornbla–gre
Protective tape
Marker thread
Sheath
Common screen
Ground wire
Basic unit
Group (Pair)
Auxiliary wire
Wire
Figure 10 Construction of cable MMHS 4x8x2x2x0.4+0.4 mm(product code TI 22701.80)
MMHS Cables
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 13
3.2 Dimensioning and Stripping of Cable� Dimension the cable according to the location of the connector in the unit
(min. 200 mm, see Figure 11) and strip the sheath, aluminium belt and plasticfoil while being careful not to mix the pairs.
� ”Comb” according to colour code instructions.
3.3 Connection of Wires to Connector� Perform the connection in the order specified by the unit–specific connection
instructions.
� In 1/1 Euroconnector the wire must extend approx. 65 mm past the connectorpin to allow for stripping and possible connection changes (see Figure 15).
� Strip wires to wire–wrap length (25 mm).
� Perform the connections using the wire–wrap technique.
� Protect the uninsulated wire by a protective sleeve.
� When the connection is complete, the protective case is pushed into place.Make sure that the pins exit through the right holes.
� Attach the case to the cable by a cable tie.
� Mark the cable by wire marks delivered with the connector.
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy14
Min. 200 mm
Min. 200 mm
Figure 11 Cable dimensioning
Euroconnectors
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 15
Chapter 4Euroconnectors
1/4Euroconnector
1/1Euroconnector
TX 21470:3x7–pin
TX 21472:3x32–pin
TX 21474:2x32–pin
Connector Frame Case
female connector
case
cover
TX 21470.01:2x7+2–pin
TX 21470.02:2x7+2–pin(provided with a separate strain relief)
Figure 12 Euroconnector construction
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy16
Case of 1/4 Euroconnector Connected 1/4 Euroconnector in itscase viewed from wire–wrap side
case
cable tie
cable
1/4 Euroconnector is placed in thecase as shown in the figure whenthe cable is to be connected to theconnector at the bottom front edge
The cable for the connector at theupper edge of the unit is connectedin the same way, but the cable isbent upwards and the cable tie isattached to the holder on the side
1/4
Locations of 1/4 Euroconnectorson 1/1 Euroconnector in the unit:
P1 connector pins 31...25P2P3P4
connector pins 23...17connector pins 15...09connector pins 07...01
Euroconnector 1/1Euroconnector
of the unit.
of pin 7.
Figure 13 Encasing and locations of 1/4 Euroconnectors TX 21470 andTX 21470.01 on the 1/1 Euroconnector of the unit
Euroconnectors
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 17
Remove
Cable
For cable tie
Bending
Strain relief
Connector TX 21470.02 can only beconnected to the unit top front edge
location.
Unitconnector
1/41/21/1
Connector pins
01...0709...1525...31
connector, to the uppermost connector
Figure 14 1/4 Euroconnector TX 21470.02, installation and use
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy18
Cables from belowthe cartridge
Cables from abovethe cartridge
Figure 15 Connection and encasing of a 1/1 Euroconnector
Using a Grounding Protective Sleeve
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 19
Chapter 5Using a Grounding Protective Sleeve
If a cabling connector is to be disconnected and reconnected frequently, a break-age may occur in the aluminum foil of the cable which weakens the EMC protec-tion. In these kinds of applications, it is advisable to place a grounding protectivesleeve on top of the aluminum foil. It is fastened by cable ties and a shrinkingsleeve. Please see the following installation instructions.
Note Different stripping lengths for 1/1– and 1/4–Euroconnectors
Installation instructions for protective sleeveThe numbering of the steps corresponds to the numbering used in Figures 16 and17.
1. Strip the outer sheath of the cable on the length indicated in item 1. Be carefulnot to damage the aluminum foils and grounding wire underneath.
2. Remove the outer aluminum foil on the entire stripping length. Cut the inneraluminum foil acting as EMC protection as indicated in item 2. Do not cut thegrounding wire, but turn its entire length around the inner aluminum foil.
3. Pull the grounding protective sleeve on top of the aluminum foil and ground-ing wire, extending it approx. 15 mm on top of the outer sheath of the cable.
4. Place pieces of shrinking sleeve on top of the protective sleeve at both ends ofit and shrink them with a hot air blower. Use a shrinking sleeve with as small adiameter as possible to avoid having to use a long heating time which maydamage the wire insulators. Secure the shrinking sleeve outside the connectorwith a cable tie. Tie the other shrinking sleeve with a cable tie when encasingthe connector.
5. Connect the Euroconnector according to is connection instructions.
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy20
Recommended materials
Product code Product
TX 21491.10 6 pcs. of 1/1–Euroconnectors with cases, 0.75 m EMC protectivesleeve + accessories
TX 21491.15 4 pcs. of 1/4–Euroconnectors with cases, 1 m EMC protectivesleeve + accessories
Table 1 Product codes of grounding accessories
In case the above grounding accessories are not used, the following are recom-mended:
1. 1/1–Euroconnector: protective sleeve Raychem RAY 101–4 (d = 3.7/9 mm),shrinking sleeve (d = 9.5–6.0 mm) black polyolefin and cable tie 100x2.5 mm
2. 1/4–Euroconnector: protective sleeve Raychem RAY 101–4 (d = 3.7/9 mm),shrinking sleeve (d = 9.5–6.0 or 6.4–4.0 mm) black polyolefin and cable tie100x2.5 mm
280 mm
120 mm
1
2
3
4
5
15 mm
inner foil
grounding wire (280 mm)
protective sleeve (150 mm)
shrinking sleeve (25 mm) shrinking sleeve (15 mm)
cable tie
Figure 16 Connection and encasing of a 1/1–Euroconnector
Using a Grounding Protective Sleeve
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 21
200 mm
250 mm1
2
4
5
3
15 mm
inner foil
grounding wire (250 mm)
protective sleeve (220 mm)
shrinking sleeve (25 mm) shrinking sleeve (15 mm)
cable tie
Figure 17 Connection and encasing of a 1/4–Euroconnector
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy22
Cable Branching
NTC DTM40–0271–REC1 � Copyright Nokia Telecommunications Oy 23
Chapter 6Cable Branching
If required, the pair cables can be branched into two or more wire bunches.
� Tools and accessories: hot air blowermetal pivot approx. 7 mmTX 21481 Branching Set for Pair Cablesfor approx. 20 cables
� The branching is made in the horizontal part of the cable above or below thecartridge.
� Dimension the cable according to the location of the connector furthest fromthe branching point.
� Open the cable up to the branching point and remove protective sheaths whilebeing careful not to mix the pairs.
� Define the length of the protective sleeves for the wire bunches to be attachedto the connectors of the unit and burn their ends to prevent them from ravel-ling by using a hot air blower and a metal pivot appropriate for the sleeve size.Slide the protective sleeves into place.
� Protect the branching point by a cable tie and a shrinking sleeve (see Figure18).
� Shrink the shrinking sleeve to its place by heating with the hot air blower. Donot overheat the cable sheath.
appr. 50 mm
cable tie
shrinking sleeve
Figure 18 Protection of branching point
TX 21470(.01/.02), TX 21472, TX 21474 Work Instructions
NTC DTM40–0271–REC1� Copyright Nokia Telecommunications Oy24
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