Table of contents

User’s Manual For

DIGITAL PANEL METER

QUASAR

Class 1.0

LARSEN & TOUBRO LIMITED MYSORE WORKS

Page No. Section 1. General Details 1 Section2. Front Panel Details 1 Section 3. Installation 9 Section 4. Mechanical Dimensions 10 Section 5. Specific Points 10 Section 6. Programming philosophy 11 Section 7. Warranty & Disclaimer 12 Appendix 1. Technical Specifications 14 Appendix 2. Modbus Details 16 Appendix 3. Memory Map 27 Appendix 4. Meter Programming Procedure 34 Appendix 5. Display Screens 40 Appendix 6. Wiring Diagram 44 Appendix 7. Dimensional Details 48

-1- 1.0 General: QUASAR is a 96 x 96 mm , flush mounted , multi screen

digital panel meter for measuring electrical parameters. The meter is designed with DSP technology to combine measurements of both instantaneous and cumulative valeus in an electrical feeder. The device is built with a custom made , backlit, LCD display to provide high resolution view of various parameters to the viewer. The parameters are displayed over 21 screens which can be scrolled up & down by front panel push buttons. The feeder parameters like CT / PT ratings, baud rates, port address, demand parameters etc. are set by additional push buttons (PBs) on the front panel.

2.0 Front Panel : Please see fig. 1 . The front panel has one LCD display, 4

PBs and a LED. The functions of the PBs are explained in the sections 2.3, 2.7 and Appendix 4. The LED flashes at a rate proportional to the kWh in the feeder.

2.1 Display Features : QUASAR comes with a custom made LCD display.

The power parameters are displayed through 21 screens . Please refer Appendix 5 for details of parameters displayed in each screen. Please alos refer to Table-1 for a ready reckoner of screen references.

The following displays appear immediately after power on- 1. all segments check 2. serial no. 3. version no. Finally it continuously displays the selected “power on screen” until keys are pressed.

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2.2 Front panel push buttons : There are four Push buttons (PBs) as on the front panel to do following functions:

a) scrolling thro’ display b) min/max/present values selection c) reset of min/max values d) front panel programming.

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Fig.- 1

-3- Table-1

Parameter Unit P1 P2 P3 (4w only)

Tot/ Avg

Max/min option

Voltage (P-N for 4W or P-P for 3W)

V 2 , 16 2 , 17 2 , 18 1 √

Current A 3, 19 3, 20 3 , 21 1 √ Active power kW 4 4 4 10, 1 √(only for

total) Reactive power L kVAr L 5 5 5 10(Lo

r C) √(only for

total) Reactive power C kVAr C 5 5 5 10(Lo

r C) √(only for

total) Apparent power kVA 6 6 6 10 √(only for

total) Power factor PF 7 7 7 11 √ Phase angle

(w.r.t. voltages) Φ- V 8 8 8

Phase angle (between voltages & currents)

Φ- A 9 9 9

Frequency Hz 12 * * 11 √

Power demand (max.) Pd 11 √ Active energy kWh 12

Reactive energy L kVArLh 13 Reactive energy C kVArCh 14 Apparent energy KVAh 15

Voltage Fundamental ~1 16 17 18 Voltage Distortion ~D 16 17 18

Current Fundamental ~1 19 20 21 Current Distortion ~D 19 20 21

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-4- Notes: 21 display screens of 3 parameters each are available. (nos. in the above table 1 indicate the order of the default display screens). Note: ‘*’ in above table indicates that Freq. of phase 1 is displayed if phase1 is available, freq. of phase 2 is displayed if phase1 is not available and phase 2 is available, freq. of phase 3 is displayed if phase1&2 are not available and phase 3 is available.

The power up screen will be by default- total power (of all phases), average voltages (of all phases) & average currents (of all phases). The default power ON screen is programmable. It will remain in this display until keys are pressed as explained below.

2.3 Functions of front panel push buttons :

Display scroll PBs ‘5’ & ‘6’ . The display scroll PBs are indicated as ‘5’ & ‘6’ .

The21 screens of display can be viewed one after the other by pressing ‘5’ or ‘6’ PBs of front panel. Pressing ‘5’& ‘6’keys simultaneously will take display to auto scroll mode. The display will scroll through all screens at a fixed rate of 3 secs. In auto scroll mode, pressing ‘5’ or ‘6’key will take display to manual mode. (No time out for any mode of display).

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-5-

Max / min values selector PB ‘MODE’ QUASAR stores max/min values of the feeder (only for parameters ticked in Table-1). The PB designated as ‘MODE’ is meant to read these max/min values . Normally latest updated values will be displayed. By pressing the push button MODE , the display can be switched to Min., Max. or present values one after the other. The display will remain in MIN & MAX modes until the PB is pressed again. In case there is a maximum timeout of 2 mins., the display will go back to Present values. Min/Max modes are not supported in auto scroll mode.

Reset Push button Resets the max/min values, except power demand & energies.

2.4 Energy & Pulse outputs :

Units and precision of energy will vary with the CT*PT ratios selected as shown in table below.

CT*PT Display format Unit < 10 xxxxxx.xx k < 100 xxxxxxx.x k <= 1000 Xxxxxxxxx k <10,000 xxxxxx.xx M <1,00,000 xxxxxxx.x M <10,00,000 Xxxxxxxx M

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PULSE OUTPUT: kWh pulse output LED is available.

2.5 Resetting (clearing) the stored parameters

Pressing reset key on front panel clears off all the max./min. values except the following parameters.

a) Power demand max. value can be cleared only in the programming

mode. b) Energy counters can be cleared only in programming mode.

2.6 Harmonics for Voltage & Current Phase wise voltages/currents are separately available as - total fundamental (~) distortion (D)

where distortion = square root (total2-fundamental2)

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Pulses/kWh Voltage/current 2,500 / (external CT*PT ) 3ph 4W 415 V (L-L) / 5A 12,500 / (external CT*PT ) 3ph 4W 415 V (L-L) / 1A 10,000 / (external CT*PT ) 3ph 4W/3W 110 V (L-L) / 5A 50,000 / (external CT*PT ) 3ph 4W/3W 110 V (L-L) / 1A

-7- 2.7 Set up & Configuration

Set up configuration is possible through front panel keys or RS485 port (optional). Viewing and modifying of setup through front panel. is possible all the time (not only on power on) and is password protected. Programming mode can be entered from front panel by pressing simultaneously ‘5’and ‘MODE’ keys. Meter restarts after coming out of programming mode. Refer appendix 4 for details of programming through front panel. Refer appendix 3 for details of programming through RS485.

Following are the setup (programming) options - a) CT primary/secondary

Change in CT ratio will automatically change the resolution of the parameters displayed. Primary and secondary values can be selected between 1 to 9999. Default on initialization: 1

b) PT primary/secondary

Change in PT ratio will automatically change the resolution of the parameters displayed. Primary and secondary values can be selected between 1 to 9999. Default on initialization: 1

c) Clear - clear energy counters

- clear max./min. demand …………8

-8- d) Power demand

- Parameter kW or kVA - Integration period-1 to 60 mins.(not w.r.t RTC)

Default on initialization: kW & 30mins. Any change in power demand settings, clears max./min. demand values.

e) Default Power ON screen

The default power ON screen can be selected as one of the 21 displays. Default on initialization: Total power, average voltage of all 3 phases & average current of all 3 phases.

f) Slave ID setting (Available only for meter with ‘RS485 option’) Unique slave IDs can be set for each meter for monitoring from a PC. Default on initialization: 1

g) Port properties settings (Available only for meter with ‘RS485

option’) Baud rate- 300 bps to 9600 bps Parity- Even, odd, none Default on initialization: 4800 bps, even.

h) Password setting (only for front panel programming)

Default password is ‘0000’. …………9

-9- 2.8 RS485 COMMUNICATION (optional)

With this option, the meters can be networked and various parameters can be monitored on a central PC. All parameters will be available via the RS 485 port. Set up configuration is also possible through this port. Protocol : MODBUS in RTU mode. Refer appendix 3 and appendix 2 for RS485 & MODBUS details.

3.0 Installation : 3.1 Incoming Inspection : Before the meter is installed, visual inspection

for any damage due to transport, has to be done. If there are any damages, please refer the warranty sheet and take appropriate action.

3.2 Re-Packing : If the meter has to be returned to the supplier, the meter

has to be repacked in its original packing. 3.2 Optimum Field conditions : For the reliability and better life of

product, the unit has to be operated at moderate temperatures and humidity. The meter is designed to work from –5 to 60 degrees C and humidity of 95%RH non condensing.

3.3 Storage : In case of meter not installed after receipt, it has to be stored

in a dry place in its original packing material. …………10

-10-

3.4 Extra Precautions : Make sure that voltage, current ratings and the configuration of meter is as per the requirements. Wrong connection can severely damage the meter, which is not covered under warranty.

3.5 Wiring connections: Wiring of the meter has to be done as per wiring

diagrams in appendix-6. 3.6 Mechanical dimensions: As per Appendix-7.

4.0 Mounting on the panel : The meter is supplied with clip on type

mounting accessories. After inserting the meter into the designated cut out on the panel, the clip on clamps have to be fixed on the back side to hold the meter against the panel firmly.

5.0 Specific Points to note : QUASAR uses CT/PT inputs for measuring

and display of electrical parameters . Following points should be noted : 5.1 Power demand calculation : Integration period starts and continues from power on, i.e. If integration

period selected is 30mins. and if 20mins of integration period is completed and power fails, then in the next power ON, the power is accumulated for the next 10 mins and then demand is computed.

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5.2 Current reversal conditions : a) Energies are updated as it is with the sign i.e. negative energies are

subtracted & positive energies are added and stored in a single register (no forward & reverse). The negative reading is made positive by adding 10^8 .

b) Demand is calculated by algebraically adding the powers, but if

final demand is negative then display shows “0.0.0.0” just to indicate that something is wrong.

5.3 Unit of Voltage and current when kilo :

Unit of voltage: for PT ratio <=30 unit is “V” for PT ratio >30 “V” blinks indicating unit is kilo Volt.

Unit of current: for CT ratio <=75 unit is “A” for CT ratio >75 “A” blinks indicating unit is kilo Amp.

6.0 Programming the meter : Parameters like CT/PT ratios etc have to be

programmed into the meter so that it can read the feeder data correctly. Please refer Appendix –4 for detatils of how to programme the meter.

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-12- 7.0 Warranty :

Larsen & Toubro Limited warrants that all the L&T products will meet L&T's published product specifications, and will be free of defects in workmanship and materials for a period of 12 months from the date of invoice from L&T.

L&T's obligation under this warranty shall be limited to servicing or replacing defective parts subject to the following terms and conditions provided the notice of defects and satisfactory proof thereof is given to L&T by its distributor or its customer within the Warranty period.

1. L&T’s shall provide repairs and maintenance service for all equipment sold/or distributed by L&T, and products which cannot be repaired by L&T will be returned, subject to L&T's prior consent for free repairs . 2.Defective parts shall be serviced or replaced by L&T on one way freight paid basis.

This warranty does not cover any defect in the product caused by accident, misuse, neglect, alteration modification or substitution of any of the components or parts, or any attempt at internal adjustment by unauthorized service personnel .

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Under no circumstance shall L&T be liable for any consequential or resulting injury or for loss, damage of expense directly or indirectly from the use of this product . The foregoing warranty is in lieu of all other warranties, expressed or implied, and is the sole and exclusive remedy for any claim arising from any defect in L&T products.

Disclaimer Sufficient care is taken to provide all information regarding the product but L & T does not claim any responsibility for the damages caused by using the product directly or indirectly.

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-14- Appendix 1: TECHNICAL SPECIFICATIONS: Accuracy For power Class 1.0 - IEC 1036/IS 13779

For Voltage 0.5% of readout ± 2 digits For Current 0.5% of readout ± 2 digits

Voltage(Vn) 3Ph 4W- 415V AC (-40% to +20%)

110V AC (-40% to +20%) 3Ph 3W- 110V AC (-40% to +20%)

Current (In) 5A or 1A (to 200%) Starting current 0.2%In (Class 1.0) Frequency 50 Hz +10% Load characteristics < 8 VA in potential circuit

< 0.5 VA in current circuit Short time over current 40 times In for 500ms Electromagnetic compatibility IEC 1036/IS 13779 (Class 1.0) ESD 8 kV, EFT 2 kV

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Case material Plastic moulded Protected to IP51- IEC 1036/IS 13779 (Class 1.0)

Insulation properties HV & insulation resistance IEC 1036/IS 13779 (Class 1.0)

Display Backlit LCD, 10mm height digits

Pulse output Pulses/kWh Voltage/current 2,500 / (external CT*PT ) 3ph 4W 415 V (L-L) / 5A 12,500 / (external CT*PT ) 3ph 4W 415 V (L-L) / 1A 10,000 / (external CT*PT ) 3ph 4W/3W 110 V (L-L) / 5A 50,000 / (external CT*PT ) 3ph 4W/3W 110 V (L-L) / 1A

Temperature -100c to 600c for operation

200c to 700c for storage Humidity 95% RH non condensing Dimension 96 x 96 mm - depth 105 mm Weight < 600gms

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-16- Appendix 2: MODBUS DETAILS 1. DETAILS OF COMMUNICATION INTERFACE

RS485 interface is available to communicate with the meter. The interface is available at the terminals. For connection details refer Apppendix 6.

1.1 Interface Standard: The configuration details to communicate with the meter are given

below- Standard RS485 (half duplex) Baud rate Selectable- 9600, 4800, 2400,1200,600 or 300 bps Parity Selectable- None, odd or even Start bit 1 Stop bit 1 1.2 Protocol: The RS485 interface uses MODBUS Protocol in RTU mode.

Communicating with the meter involves sending commands to the meter for reading and writing the particular register. The meter can be addressed with specific user defined meter address (slave ID) from 1-255.

2 DETAILS OF MODBUS PROTOCOL In the explanation of protocol the examples used are specific to L&T meters. The details of the protocol are also limited to L&T meters.

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2.1 Remote Terminal unit Framing: In RTU mode data is sent as 8-bit binary characters. In RTU mode, message characters must be transmitted in a continuous mode. The receiving device monitors the elapsed time between receipt of characters i.e. inter byte delay. If inter byte delay is three and one half the character time (for e.g. at 9600bps, the max. inter byte delay expected will be 1ms*3.5), the receiving device can timeout. The max. response time of the meter to a command, i.e. the time taken to send the first byte out in response to the command is max. 60ms.

ADDRESS FUNCTION DATA CHECK

8 BITS 8 BITS N * 8 BITS 16 BITS

2.2 Address field:

The meter can be addressed with specific user defined address from 1-255. Each slave must be assigned a unique address and only the addressed slave responds to query that contains its address. When the slave sends a response the slave address informs the master which slave is communicating. In broadcast message, an address of 0(zero) is used. All slaves interpret this as an instruction to read and take action on the message, but do not issue a response message.

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-18- 2.3 Function field:

The function code field tells the addressed slave what function is to be performed. The higher order bit in this field is set by the slave device to indicate that other than a normal response is being transmitted to the master device (See SECTION 3 for exception response). The following functions have been implemented in the meter.

CODE MEANING ACTION 03 Read holding

registers Obtains current binary value in one or more holding registers.

06 Preset single register

Place a specific binary value into a holding register.

16 Preset multiple registers

Places specific binary values into a series of consecutive holding registers.

2.4 Data Field: The data field contains the information needed by the slave to perform the specific function or it contains data collected by the slave in response to a query.

2.5 Error Check Field: This allows the master and slave device to check a

message for error transmission. …………19

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The error check field uses a CRC-16 check in the RTU mode. 3. EXCEPTION RESPONSES

Exception response is a notification of an error. The exception response codes are listed in the table 3-1.When a slave detects one of these errors, it sends a response to the master consisting of slave address, function code, error code and error check field. To indicate that the response is a notification of an error, the high order bit of the function code is set to 1.

Table 3-1

CODE NAME MEANING 01 ILLEGAL

FUNCTION The message function received is not an allowable action for slave.

02 ILLEGAL DATA ADDRESS

The address referenced in the data field is not an allowable address for the addressed slave location.

03 ILLEGAL DATA VALUE

The value referenced in the data field is not allowable in the addressed slave location.

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-20- Example: Query Message

SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

H.O NO. OF REG

L.O NO. OF REG

ERROR CHECK FIELD

ERROR CHECK FIELD

0A 01 00 24 00 02 FC BB The query requests the status of input 0036 in slave no.10. Since the function is an invalid function for the L&T meters so the following error response will be generated. Response Message

SLAVE ADDR

FUNC

EXCEPTION CODE

ERROR CHECK

ERROR CHECK

0A 81 01 F0 52

The function code field is the original function code with the high order bit set and exception code 01 indicates an illegal function field.

4. EXPLANATION OF VARIOUS FUNCTION

The purpose of this section is to define the general format for the specific command available to programmers. The form of each query message (in RTU transmission mode) and an explanation of the function the query message performs are provided. All numbers in Modbus format are entered in hexadecimal.

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-21-

4.1 Read Output Register (Function Code 03) Query Read output Register(03) allows the user to obtain the binary contents of holding register in the addressed slave. The addressing allows up to Max.90 registers to be obtained at each request. Broadcast mode is not allowed. The below example reads registers of 1st phase voltage from slave number 17(decimal). Since 1st phase voltage is stored in the address 0000 and 0001 so to read phase voltage both addresses should be read simultaneously.

Example:

Query Message SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

H.O NO OF REG

L.O NO. OF

REG

ERROR CHECK FIELD

ERROR CHECK FIELD

11 03 00 00 00 02 C6 9B

NOTE: If a particular parameter is stored in more than one address location. Then for reading that particular parameter all the address locations should be read simultaneously. Otherwise meter will not respond or the response will not be the correct value. For further details see memory map of parameters.

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-22- Response:

The addressed slave will respond with its address and the function code, followed by the information field. The information field contains 1 byte describing the quantity of data bytes to be returned. The contents of register requested (DATA) are two bytes each. The first byte includes the higher order bits and the second byte includes lower order bits.

Response Message

SLAVE ADDR

FNC BTE COUNT

DATA O/P REG H.O. 0000

DATA O/P REG L.O. 0000

DATA O/P REG H.O. 0001

DATA

O/P REG L.O. 0001

ERR.CHE. FLD

ERR. CHK FLD

11 03 04 00 00 5D E6 52 E8 In this particular example the data obtained for 1st phase voltage is

0x00005DE6 which if converted into integer will be 24038.So to get the voltage of the phase this particular value should be multiplied with the specified multiplication factor(MF) which is 0.01 in this case. (For further details see the memory map of the parameters). So 24038 x 0.01=240.38 which is the phase voltage.

4.2 Preset Single Register (Function Code 06) CAUTION: Function (06) will overwrite controller memory.

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-23- Function (06) allows the user to modify the contents of a holding register. The contents of only those holding registers can be modified which are write only. The values are provided in binary, up to the maximum capacity of the controller (16-Bits in L&T meters)and unused higher bits must be set to zero. When used with slave address zero(Broadcast mode), all slave controllers will load the specified registers with the content specified. Example: This example will set the CT primary value in slave number 17.The address of CT primary is 2048 and value to be programmed is 1000.

Query Message

SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

DATA VAL. H.O

DATA VAL. L.O

ERR. CHK FLD

ERR. CHK FLD

11 06 08 00 03 E8 89 84 The normal response to a preset single register request is to transmit the query message after the register has been altered. Response Message

SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

DATA VALUE H.O

DATA VALUE L.O

ERR. CHK FLD

ERROR CHECK FIELD

11 06 08 00 03 E8 89 84

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-24-

If the value is an illegal value then the response message will be an exception response(Error message). For the details of max. and min. values of any parameter , please refer to manual. NOTE: For programming RTC the values the data for setting the RTC should be BCD(Binary Coded Decimal). Example: For setting date 29 and day 5 at location 257 the query message will be as follows Query Message

SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

DATA VALUE H.O

DATA VALUE L.O

ERR. CHK FLD

ERR. CHK FLD

11 06 01 01 29 05 04 F5 4.3 Preset Multiple Registers(Function Code 16) CAUTION: Function(16) will overwrite controller memory. Function(16) allows the user to modify the contents of holding registers.

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-25- The contents of only those holding registers can be modified which are writeable only. The values are provided in binary up to the maximum capacity of the controller (16-Bits in L&T meters), unused higher bits must be set to zero. Maximum of 10 registers can be programmed by this function. When used with slave address zero(Broadcast mode) all slave controllers will load the specified registers with the contents specified. Example: This example will set the CT primary and CT secondary value in slave number 17.The address of CT primary is 2048,CT secondary is 2049 and value to be programmed for CT primary and secondary are 1000 and 100 respectively.

Query Message ADDR

FUNC

H.O. ADD

L.O.ADD

QTY. H.O

QTY. L.O

BYT SNT

H.O DAT

L.O DAT

H.O DAT

L.O DAT

ERR FLD

ERR FLD

11 10 08 00 00 02 04 03 E8 00 64 41 34 The normal response to a preset multiple register request is to echo the address function code, starting address and number of registers to be loaded.

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-26-

Response message

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SLAVE ADDR

FNC H.O START ADDR

L.O. START ADDR

QTY H.O

QTY L.O

ERR. CHK FLD

ERR. CHK FIELD

11 10 08 00 00 02 41 38

-27- Appendix 3: MEMORY MAP Read only Parameters ( Function Code 4): MEMORY MAP (Address list) Address Parameters Words MF

(if no specific format is mentioned, format is HEX)

READ ONLY PARAMETERS Instantaneous Parameters

30,001 Phase 1 Voltage 2 0.01 30,003 Phase 2 Voltage 2 0.01 30,005 Phase 3 Voltage * 2 0.01 30,007 Phase 1 Current 2 0.001 30,009 Phase 2 Current 2 0.001 30,011 Phase 3 Current * 2 0.001 30,013 Phase 1 Active Power 2 0.0001 30,015 Phase 2 Active Power 2 0.0001 30,017 Phase 3 Active Power * 2 0.0001 30,019 Phase 1 Reactive Power 2 0.0001 30,021 Phase 2 Reactive Power 2 0.0001 30,023 Phase 3 Reactive Power * 2 0.0001 30,025 Phase 1 Apparent Power 2 0.0001 30,027 Phase 2 Apparent Power 2 0.0001

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30,029 Phase 3 Apparent Power * 2 0.0001 30,031 Phase 1 Power Factor 2 0.001 30,033 Phase 2 Power Factor 2 0.001 30,035 Phase 3 Power Factor * 2 0.001 30,037 Total Active Power 2 0.0001 30,039 Total Reactive Power 2 0.0001 30,041 Total Apparent Power 2 0.0001 30,043 Total Power Factor 2 0.001 Format:for above addresses 30,013 to 30,043 1st word – (MSW) 0x0000 if value positive 0xFFFF if value negative 2nd word – value itself, if positive as indicated by 1st word 2’s complement of value, if negative as indicated by 1st word 30,045 Line Frequency 2 0.01 30,047 Reserved 2 30,049 Phase 1 Voltage Angle 2 0.1 30,051 Phase 2 Voltage Angle 2 0.1 30,053 Phase 3 Voltage Angle * 2 0.1 30,055 Phase 1 Phase Angle 2 0.1 30,057 Phase 2 Phase Angle 2 0.1 30,059 Phase 3 Phase Angle * 2 0.1 30,061 Phase 1 Voltage Fundamental 2 0.01 30,063 Phase 2 Voltage Fundamental 2 0.01

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30,065 Phase 3 Voltage Fundamental * 2 0.01 30,067 Phase 1 Voltage Distortion 2 0.01 30,069

Phase 2 Voltage Distortion 2 0.01

30,071 Phase 3 Voltage Distortion * 2 0.01 30,073 Phase 1 Current Fundamental 2 0.0001 30,075 Phase 2 Current Fundamental 2 0.0001 30,077 Phase 3 Current Fundamental * 2 0.0001 30,079 Phase 1 Current Distortion. 2 0.0001 30,081 Phase 2 Current Distortion 2 0.0001 30,083 Phase 3 Current Distortion * 2 0.0001 30,085 Average Voltage 2 0.01 30,087 Average Current 2 0.001 Minimum / Maximum of Instantaneous

Parameters

30,129 Minimum Phase 1 Voltage 2 0.01 30,131 Minimum Phase 2 Voltage 2 0.01 30,133 Minimum Phase 3 Voltage * 2 0.01 30,135 Maximum Phase 1 Voltage 2 0.01 30,137 Maximum Phase 2 Voltage 2 0.01 30,139 Maximum Phase 3 Voltage * 2 0.01 30,141 Minimum Phase 1 Current 2 0.001 30,143 Minimum Phase 2 Current 2 0.001

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30,145 Minimum Phase 3 Current * 2 0.001 30,147 Maximum Phase 1 Current 2 0.001 30,149 Maximum Phase 2 Current 2 0.001 30,151 Maximum Phase 3 Current * 2 0.001 30,153 Minimum Phase 1 Power Factor 2 0.001 30,155 Minimum Phase 2 Power Factor 2 0.001 30,157 Minimum Phase 3 power Factor * 2 0.001 30,159 Maximum Phase 1 Power Factor 2 0.001 30,161 Maximum Phase 2 power Factor 2 0.001 30,163 Maximum Phase 3 Power Factor * 2 0.001 30,165 Minimum Average Voltage 2 0.01 30,167 Maximum Average Voltage 2 0.01 30,169 Minimum Average Current 2 0.001 30,171 Maximum Average Current 2 0.001 30,173 Minimum Average Power Factor 2 0.001 30,175 Maximum Average Power Factor 2 0.001 30,177 Minimum Frequency 2 0.0001 30,179 Maximum Frequency 2 0.0001 30,181 Minimum Total Active power 2 0.0001 30,183 Maximum Total Active power 2 0.0001 30,185 Minimum Total Reactive power 2 0.0001 30,187 Maximum Total Reactive power 2 0.0001

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30,189 Minimum Total Apparent Power 2 0.01 30,191 Maximum Total Apparent Power 2 0.01 30,193 Minimum Power Demand 2 0.01 30,195 Maximum Power Demand 2 0.01 Read Only Parameters (Function Code 4): Cumulative energies since installation

independent of Tarifs.

30,513 Cumulative energy - forward kVAh 2 0.01 30,515 Cumulative energy - forward kWh 2 0.01 30,517 Cumulative energy - forward kVArh lag 2 0.01 30,519 Cumulative energy - forward kVArh lead 2 0.01 Read Only Parameters (Function Code 4): 31,281 Power Demand 2 0.01

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-32- Read Write Parameters (Supported by function code 6 and 16 for Writing and by function code 3 for Reading.)

Communication Parameters

42,385 Meter Address 1 1 42,386 Baud Rate 1 1 Format: 1 -> 300 2 -> 600 3 -> 1200 4 -> 2400 5 -> 4800 6 -> 9600 42,387 Parity 1 1 Format : 0 -> None Parity 1 -> Odd Parity 2 -> Even Parity

CT PT ratio settings (1 to 9999 max)

42,049 CT Primary 1 1

42,050 CT Secondary 1 1

42,051 PT Primary 1 1

42,052 PT Secondary 1 1

(max. CTpri/Ctsec)*(PTpri/Ptsec) <=1000000

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MD Settings

42,161 Setting for MD 2 1 Format of MD Setting : 1st Word : 15 14 13 12 11 10 9 8 | 7 6 5 4 3 2 1 0 No of MD | MD Type 2ND Word : 15 14 13 12 11 10 9 8 | 7 6 5 4 3 2 1 0 Intg. Period | Sub.Intg. Period No.of MDs : 1 (Only one energy register is available) MD Type : 0 or 1 Forward 0-kVA, 1-kW, Intg. Period : 1,2,3,4,5,6,10,12,15,20,30,60 min. Sub.Intg. Period : Sub.Intg Period is egual to Intg.period

‘*’- The Parameter is supported only in four wire meters. In three

wire meter the query for this parameter is replied with Zeros.

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-34- Notes : The above are supported by function code 6 and 16 for writing and by function code 3 for reading. ‘*’- The Parameter is supported only in four wire meters. In three wire meter the query for this parameter is replied with Zeros.

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-35- Appendix –4 Procedure for front panel programming of QUASAR

Programming of various parameters in Quasar is done by Selecting the appropriate screen and changing the parameters. Following sections explain the setting procedure. 1.0 Entering into programming mode :

Press both Mode & Up buttons together. Screen will appear as shown. First digit will flash. You have to set Pass password .

1.1 Entering the pass word: Let us say password is 1234. Press Up button to change the value of

the flashing digit. Press Rst button to shift to next digit. Press Up button to change its value. Set 1234 in all digits. Press mode. Meter will display PW accepted momentarily and go to a new screen ctpt rat.

2.0 Selecting the parameters to be set :

Once the meter is at above screen , the user can select a screen to set any of the following paramerters

Ctpt rat Change ratios of CTs and PTs Clr data Reset the MD value and cumulative energy values. Set MD You can set the integration time and choose either kW or kVA for integration . Set Id set the node address of meter

………….36

Prog Pass 0000

-36- Set Port set the baud rate for communication Set Disp set the default display screen Set Pass set the pass word Press Up button to choose any of the above screens. 3.0 Setting CT/PT Ratio

Reach the screen ctpt rat as explained above. Press Mode . Display shows existing CT primary rating. First digit will flash. Change the value by using Up and Rst buttons. Say you have set CT primary as 0200.

After seting the required value press mode. Meter will display L up date. Press mode again. Meter will display accepted briefly and return to display as shown. Press Down button to go to ct secy. Press Mode. Display shows existing CT secondary rating. First digit will flash. Change the value by Up and Rst buttons. Say you have set CT secondary as 0001. After seting the required value press mode. Meter will display L up date. Press mode again. Meter will display accepted briefly and return to display as shown. Press Down button to go to pt prmy.

……….37

0100 ct prmy

0200 ct prmy

0001 ct secy

-37-

Set the ratings of PT primary and secondary in the same manner as explained above. After finishing with PT Secondary, press Down button. Meter will display escape and return to ctpt rat.. Press Up button to go to next screen clr data.

4.0 Clearing the existing data :

After reaching the screen clr data, press mode. Display will change to clr dmd. Press mode. Display will be L up date. Press mode. Display will be accepted followed by clr dmd. Press up button. Display will change to clr egy. Press mode. Display will be L up date. Press mode. Dis[lay will be accepted followed by clr egy. Press Down button. Display will show escape followed by clr data. Press Up button. Display will enter next screen Set MD.

5.0 Setting the Demand parameters :

After reaching the screen set md, press mode. Display will show existing value for MD integration time. The value will be flashing. By pressing Up button change the value to required setting. Press Mode. Display will show L update. Press mode again. Disply will show accepted followed by the up dated screen.

Press Up button. Display will show md kw. Press mode. KW will flash.

………..38

30 md intg

-38-

By using up button choose kW or kVA. Press mode. Display will show L up date. Press mode again. Display will show accepted followed by Md kW. Press down button to escape followed by Set Md. Press up button to go to next screen Set Id.

6.0 Setting the node address for meter:

After reaching the screen Set Id, press mode. Display will show existing value for Meter Id. The value will be flashing. By pressing Up button change the value to required setting. Press Mode.

Display will show L update. Press mode again. Disply will show accepted followed by Set Id screen. Press Up button to go to the next screen Set Port.

7.0 Setting the port characteristics:

After reaching the screen Set Port, press mode. Display will show existing value for baud rate. Press mode. The value will be flashing. By pressing Up button change the value to required setting. Press Mode.

Display will show L update. Press mode again. Disply will show accepted followed by up dated screen.

…………39

001 Meter Id

9600 baud rate

-39-

Press Up button . Display will change to parity setting screen as shown. Press mode. The parameter even will flash. Using Up button choose

even or odd or none parity. Press mode. Display will change to L up date. Press mode again. Display will show accepted followed by up dated screen. Press Down button. Display will show escape followed by Set Port. Press up button to go to next screen Set Disp.

8.0 Setting the default display

After reaching the screen Set Disp, press mode. Display will show existing default screen number. Press mode. The number will be flashing. By pressing Up button change screen number which will become default screen. Press mode. Display will show L update. Press mode again. Disply will show accepted followed by up dated screen. Press Up button to go to the next screen Set Pass.

9.0 Setting the pass word:

After reaching the screen Set Pass, press mode. Display will show existing pass word screen as shown. Press mode. The number will be flashing. By pressing Up button change the number into required new pass word.

……………40

even parity

00 position

0000 pass ord

-40-

Press mode. Display will show L update. Press mode again. Disply will show accepted followed by Set pass screen. Press Up button to go to the next screen Set Pass. Press down button to escape. Meter will return to normal display mode.

…………41

-41 Appendix 5 Display screens

………42

Screen 1 Ave. Power, Volts & Amps

Screen 2 3Ph. Voltages

Screen 3 3Ph. Currents

Screen 4 Inst. 3Ph. Active Power

Screen 5 Inst. 3Ph. Reactive Power

-42-

………43

Screen 6 Inst. 3Ph. Apparent Power

Screen 7 Inst. 3Ph. Power Factor

Screen 8 Voltage angles

Screen 9 Phase angles

Screen 10 Total Active, Reactive & Apparent Power

Screen 11 Power demand, Total PF & Frequency

-43-

………..44

Screen 12 Cum. Active Energy

Screen 13 Cum. Inductive Energy

Screen 14 Cum. Capacitive Energy

Screen 15 Cum. Apparent Energy

Screen 16 Ph 1 - Total, Fundamental & Distortion Voltages

Screen 17 Ph 2 - Total, Fundamental & Distortion Voltages

-44-

………45

Screen 18 Ph 3 - Total, Fundamental & Distortion Voltages

Screen 19 Ph1 - Total, Fundamental & Distortion Currents

Screen 20 Ph2 - Total, Fundamental & Distortion Currents

Screen 21 Ph3 - Total, Fundamental & Distortion Currents

-45- Appendix 6 Wiring Diagram - 3 Ph. 4 Wire with CT & PT

……….46

-46-

Wiring Diagram - 3 Ph. 4 Wire with CT & without PT

………47

-47- Wiring Diagram - 3 Ph. 3 Wire with CT & PT

………48

-48-

Wiring Diagram - 3 Ph.3 Wire with CT & without PT

……….49

-49-

Appendix 7 Dimensional details