analogue meters with moving - iron movement - de meters... · analogue meters with moving - iron...

Data Sheet

Analogue Meters with

Moving - Iron Movement

DE 48

DE 72

DE 96

DE 144

Analogue Meters With Moving - Iron Movement - DE

RISHABH INSTRUMENTS PVT.LTD.F-31, MIDC, Satpur, Nashik-422 007,India.Tel.: +91 253 2202160, 2202202 Fax : +91 253 2351064E-mail : India :- [email protected] International :- [email protected]

Rishabh Instruments 1 / 01 / I / I / 1107

Application

Movement

Pointer

Pointer deflectionScale characteristics

Scale division

Scale length

over range:Ammeters 2 times nominal currentvoltmeters for use on

Voltage transformerScale Interchangeability

Knife - edge pointer0...90

0

Near Linear above 10% of nominal full Scale valueCoarse - fine

1.2 times nominal voltage

De48 De72 DE96 DE14441 mm 61mm 97mm 146 mm

Interchangeable

Scale and Pointer

Nominal case and cutout dimensions for : IS 2419indicating Electrical instruments DIN 43700

Scale and pointer for electrical measuring : IS 1248instruments DIN 43802

Connections and Terminal markings for : IS 1248panel meters DIN 43807

Terminal bolts / leads. : DIN 46200/46282

Safety requirements and protecti ve : IS 9249-1979measures for Electrical indicating. DIN 40050/8-70,instruments and their accessories. VDE 0110/ 11-72

VDE 0410/ 10-76IEC 529 , IEC 1010

Performance specifications for direct : IS 1248acting indicating analogue electrical IEC51/DINEN60051measuring instruments and their accessories DIN 43701Environmental conditions : IS 1248

IS: 9000, Part 5, 7, 8,VDE / VDI 3540

Front frames for indicating measuring : DIN 43718instruments Principle dimensionsUL Combustibility Class

Comply with following European directives :

: UL 94 V-0

89 / 336 / EEC (EMC Directive), 73/23/EEC (low voltage directive)

Applicable Standards

Measured quantity :AC Power consumption:voltmeters < 4.5VAAmmeters < 15A < 0.5VAAmmeters > 15A < 0.8 VAOverload capacityContinuously

Short durationVoltmeters

Ammeters DE 48 DE 72/96/1445 s max. 10 times(200 A max). 10 times1 s max -- 40 times(250 A max.)Enclosure code(IEC 529)

Insulation class

Rated insulation DE 48: 660V DE72/96/144: 1000V

Proof voltage

Installation category

Insulation resistance

voltage or current

(acc. to IS: 1248 / IEC 51):1.2 times rated voltage /current

:2 times rated voltagemax 1000V ,upto max 5 seconds.

IP 52 caseIP 00 for terminals without back coverIP 20 for terminals with back cover

Group A according to VDE 0110

DE 48: 2kV DE72/96/144: 3kV

600 V CAT III (IEC 1010)

> 50 Mohm at 500 V d.c

Electrical Data

Case details Moulded square case suitable formounting in Control / Switchgear panels,Machinery consoles.

Case material Glass filled polycarbonate ,flame retardant and drip proofas per UL 94 V-0.

Front facia Glass

Colour of bezel Black

Position of use VerticalPanel fixing Swivel screws

Mounting Stackable in a single cutout

Panel thickness <

40 mm

TerminalsVoltmeters and Hexagon studs, M4 screws and

ammeters <= 30A wire clamps E3 (DIN 46282)

Ammeters > 30A

Ammeters > 60A Threaded Studs M8 with Nuts.

Threaded studs M6 with nuts

Mechanical Data

Accuracy class

Reference conditions

Ambient temperaturePosition of use

InputWaveform sine

Frequency: 45...65HZ

Other conditions

1.5 according to IS: 1248

(IEC 51/ DIN EN 60051)

230C + 2Nomial position + 1

0

wave,distortion factor <= 5 %Rated value of measured quantity

IS : 1248 (IEC 51/ DIN EN 60051)

Reference Conditions




Moving iron meters indicate rms-values practically independent of waveform even of high harmonic. Error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100kHz. waveforms ( e.g. phase gating controls) and for frequencies above 100kHz.

These meters offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a single Cut out (Mosaic mounting). For CT operated ammeters, dials can be fitted based on CT ratio. Front window glass and bezel can be easily replaced.

The moving iron , panel meters ,DE 48/72/96/144 housed in moulded polycarbonate cases are suitable for the measurement of AC currents and voltages in the usual frequency range of 15...100Hz.

Moving iron movement has pivots of very high hardness.Movement is suspended between spring loaded saphire jewels. Movement is critically damped by use of silicon oil

& ammemdment 93/68/eec, for CE Marking

voltage

Over range (ammeters)

Ambient Temperature 0...50 oC

Position of use o

Frequency 15 ...100Hz (Voltage)15...400Hz (current)

External magnetic field : At 0.4 kA/m,less than 6 % of fiducial-value (not as a percentage class index)

Nominal Range of Use

Climatic suitability Climate category II as per IS : 1248(climatic class 3 according toVDE/VDI 3540)

Operating temperature - 10... + 550

CStorage temperature - 25... + 65

0

C

Relative humidity <

75% annual average, non-condensing

Shock resistance

Vibration resistance

15g. 11 ms

1.5 g at about 50 Hz

Environmental Conditions

CaseFront facia Antiglare glassColour of bezel Red, Yellow ,Blue, WhiteRed index pointer Front adjustable on sitePosition of use on request 15 ....165

o

DialBlank dial With initial and end values marked. Special markings Numbering / Lettering.Division dials Basic divisions without numbering. Colour markings/bands Red or green

Options

Safety Terminal Protection

Accessories

1) Instruments with damaged bezels or window glasses must be disconnected from the mains.

Safety Precautions

A. C. Voltage

6V 100mA10V 150mA

15V 250mA

25 V 400mA

40 V 600mA

60 V 1A

100V 1.5A

120 V 2.5A

132 V 3A

150 V 4A

200 V 5A

250 V 6A

300 V 10A

400V 15A

500 V 20A

600 V 25A

750 V (except DE 48) 30A

40A

v For use on oltage transformer 50A

60A

.../100V secondary 100A (except DE 48)

.../110 V secondary for use on current transformer .../1A secondary

or .../5A secondary

A. C. Current

Standard Measuring Ranges

2) Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing. If non - insulated connector wires are used.

3) The back cover must be snapped into place after connector wires have been clamped for protection against accidental contact.

4) Scales may only be replaced under voltage - free conditions.

5) Bezels and window glasses may only be replaced under voltage - free Conditions.

Full sized polycarbonate back cover to provide protection againstaccidental contact ( hand and fingers ) acc.to IS 9249, VDE 0410.



Rishabh Instruments

Vertical 5

1 / 01 / I / I / 1107

+-

o

No over range or 6 times over rangeover nominal current

Connections

Dimensions

For Voltmeters & ammeters upto 30 A For ammeters > 30 A

Dimensions(in mm)

DE 48 DE 72 DE 96 DE 144

Bezel a 48 72 96 144Case b 43.5 66 90 136Depth c 53 53 53 53

d 44.5 67.5 91.5 137.55.5e 5.5 5.5 5.5

Cotout Size 45 68 92 +0.8+0.7+0.6

Depth withBack cover f 64 64 64

c=62mm,for I > 30A & up to 60Ac = 67 mm, for > 60 A I f=69.5mm, for > 60 AI

f=75mm, for DE 48 > 30 AI

Weight (approx.) 0.1 kg. 0.16 kg. 0.2 kg. 0.4 kg.

64

138+1

X X

X

X

X X

X X

X

AC Current (for use on currentTransformer)

AC Current (Direct connected)

AC Voltage (Direct connected)

L1

N(L2)

L1

N(L2)

L1

N(L2)




48 mm x 48 mm 72 mm x 72 mm96 mm x 96 mm 144 mm x 144 mm

er

Standard scale same as measuring range

*3

Additional numbering on request *3*3

*1 standard*3 Please clearly add the desired specifications while ordering

v

Coloured marking red or green *3

ed polycarbonate backco

Additional lettering on request

Coloured sector red or green

no over range * 32 times nominal current * 1,

6 times nominal current *3

Refer to table inside

Moving-iron panel meter

full siz

Swivel Screw

None * 1

Normal glass *1Antiglare glass *3

Black *1

Red,Blue,Yellow,White*3

Vertical *1

On request 15 .... 165 0 *3

Blank dial with division *3

Over range (ammeters)

Measuring Ranges

Type DE

Front dimension48 72

Terminal protection

Panel Fixing

Red Index Pointer

Front facia

Colour of bezel

Position of use

Dial

Logo RISHABH

Ordering Information

DE 72 Measuring range 150 V, dial 0 - 100%

Specifications are subject to change without notice(02/09)

Ordering example

17 18

17 18

k L

17 18

k l

96 144

*1

1 / 01 / I / II / 1107Rishabh Instruments


DC Ammeter, Voltmeter - DS

Data SheetDSDS

4872

DSDS

96144

U

Analogue Meters withMoving - coil Movement

D. C. Voltage

Rated Value


Rated Value

D. C. Voltage

140 mV240 mV374 mV424 mV600 mV400 mV600 mV140 mV540 mV540 mV540 mV37 mV196 mV196 mV196 mV196 mV196 mV196 mV11 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV60 mV72 mV60 mV60 mV60 mV60 mV60 mV60 mV72 mV60 mV

*4 *515uA *4 *525uA *440 uA*450 uA*460 uA

100 uA150 uA250 uA400 uA500 uA600 uA1 mA1.5 mA2.5 mA4 mA5 mA6 mA10 mA15 mA20 mA25 mA40 mA60 mA100 mA150 mA250 mA400 mA600 mA1 A1.5 A2. 5 A4 A5 A6 A10 A15 A20 A25 A30 A40 A60 A

*7100 AFor use ontransducer4-20 mA

*515 mV *525 mV

40 mV50 mV60 mV75 mV100 mV150 mV250 mV400 mV600 mV1 V1.5 V2.5 V4 V6 V10 V15 V25 V30 V40 V50 V60 V100 V150 V200 V250 V300 V400 V500 V600 VFor use onexternalshunt

* 660 mV * 675 mV

* 6150 mV

3.33kohm/V3.33kohm/V3.33kohm/V3.33kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 Kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V1 kohm/V

1 kohm/V1 kohm/V1 kohm/V

60 mV

Moving coil movement has pivots of very high hardness. Movement is suspended between spring loaded saphire jewels. Movement isproperly shielded & critically damped by eddy currents induced incoil former.

Movement

The moving coil panel meters, DS 48/72/96/144 housed in mouldedpolycarbonate cases are suitable for the measurement of DC currents and voltages.

Application

Case details Moulded square case suitable formounting in Control / Switchgear panels,Machinery consoles.

Case material Glass filled polycarbonate ,flame retardant and drip proofas per UL 94 V-0.

Front facia GlassColour of bazel BlackPosition of use VerticalPanel fixing Swivel screwsMounting Stackable in a single cutoutPanel thickness < 40 mmTerminalsVoltmeters andammeters <6A

Hexagon studs, M4 screws andwire clamps E3 (DIN 46282)

Ammeters >6A Threaded studs M6 with nuts

Ammeters >60A Threaded studs M8 with nuts

Mechanical Data

Measured quantity

Overload capacity

voltage :DC or current(acc. to IS: 1248 / IEC 51)

Continuously

Short duration

:1.2 times rated voltage /current:2 times rated voltage,5 s Max10 times rated current,5 s Max

Enclosure code IP 52 case(IEC 529) IP 00 for terminals without back cover

IP 20 for terminals with back coverInsulation class Group A according to VDE 0110Rated DS 48 DS 72/96/144

660 V 1000VgProof volta e 2kV 3kV

Installation catagory 600 V CAT III (IEC 1010)Insulation resistance > 50 Mohm at 500 V d.c.

Electrical Data




*4 Accuracy class 2.5*5 Not applicable for DS 144*6 Total lead resistance of 0.035 ohm is considered for mV ranges while calibration.*7 Not applicable for DS 48

Pointer Knife - edge pointerPointer deflection Scale characteristics linear

00...90

Coarse - fineScale division Scale length DS 96 DS 144

41 mmScale Interchangeability

Scale and Pointer

Accuracy class 1.5 according to IS: 1248(IEC 51/ DIN EN 60051)

Reference conditionsAmbient temperature 230C + 20CPosition of use Nomial position + 10

Input Rated value of measured quantityOther conditions IS : 1248 (IEC 51/ DIN EN 60051)Nominal range of useAmbient temperature 0...500CPosition of use Vertical + 5

0

External magnetic field 0.5 mT

Accuracy at Reference Conditions

+( 10%)-

These instruments offer several advantages in switchboards andGenerating Set Panels. Number of meters can be mounted in a single Cut out (Mosaic mounting). Front glass, Bezel & Dial can be easily replaced.

Approx Voltage drop Sensitivity

DS 48 DS 72

Interchangeable63 mm 97 mm 146 mm

Climatic suitability

Operating temperature - 10... + 55Storage temperature - 25... 0+ 65 CRelative humidity < 75% annual average, non-condensingShock resistor 15g, 11msVibration resistor 10-150-10 Hz / 0.15mm

1.5 g at about 50 Hz.


Case

Front facia Antiglare glassColour of bezel Red, Yellow, Blue, White. Red index pointer Front adjustable on site

0Position of use on request 0 ....1800

DialBlank dialSpecial markingsDivision dialsColour markings/bands

Options

Safety Terminal protectionAccessories




Nominal case and cutout dimensions forindicating Electrical instruments

: IS 2419DIN 43700

Scale and pointer for electrical measuringinstruments

: IS 1248DIN 43802

Connections and Terminal markings forpanel meters

: IS 1248DIN 43807

Terminal bolts / leads. :Clamp straps for connections :

Safety requirements and protectivemeasures for Electrical indicating.instruments and their accessories. ,

:

DIN 46200/46282DIN 46282

IS 9249DIN 40050/8-70,VDE 0110/ 11-72VDE 0410/ 10-76IEC 529 , IEC 1010

Performance specifications for directacting indicating analogue electricalmeasuring instruments & their accessories

: IS 1248IEC 51/DIN EN 60051

Environmental condition : IS 1248IS: 9000, Part 5, 7, 8,VDE / VDI 3540

Front frames for indicating measuringinstruments Principle dimensions

: DIN 43718

UL Combustibility Class : UL 94 V-0

Technical conditions of delivery forelectrical instruments

: DIN 43701

Mechanical strength (Free fall test,vibration test)

: IS 1248IS 9000VDE 0411, part 1,Sec. 43/44, IEC 1010

Comply with following European directives: 89 / 336/ EEC (EMC


Connections

DC current

DC voltage

X

L +L -

L +

L -

17 18

17 18

weight(Approx) 0.13kg 0.22kg 0.43kg

Depth with 64 64 64 64 back cover f**

* c = 68mm, for I= 6 to 60 A* c = 78mm, for I> 60 A** f = 70mm, for I= 6 to 60 A** f = 75mm, for DS 48, I >6A

DS 48 (in mm)

Bezel a 48 72 96 144 Case b 43.5 66 90 136 Depth c* 53 53 53 53 d 44.5 67.5 91.5 137.5 e 5.5 5.5 5.5 5.5 Cutout size 45 +0.6 68+0.7 92+0.8 138+1

For Voltmeter & Ammeter < 6A For Ammeter 6 - 100 A

Dimensions

Dimensions

Others

Zero positionIncreased sensitivity

10 kohm/V for Voltmeters 15..150VAdjustment of Resistance (Sensitivity)

Centre zero or off-set zero4kohm/V for voltmeters 1...600V

+ 1% at 230 CWithin

0.18kg

With initial and end values marked.Numbering / Lettering.Basic divisions without numbering.Red or green

Full sized polycarbonate back cover to provide protection against accidental contact (hand and fingers) acc.to IS 9249,VDE 0410.

::

:

Climate category II as per IS : 1248(climatic class 3 according toVDE/VDI 3540)

0 C

DS 72 DS 96 DS 144

directive),73/23/EEC(low voltage directive)& amendment 93/68/EEC,for marking.

DIN 43701

TypeDS Moving-coil panel meterFront dimension48 48mm x 48 mm72 72 mm x 72 mm96 96 mm x 96 mm144 144 mm x 144 mm

Measuring ranges refer to table insideFront facia Normal glass *1

Antiglare glass *3

Colour of bezel Black *1Red,Blue,Yellow,White*3

Position of use Vertical *1on request 0....180 0

*3

Terminal protection Full sized polycarbonate back cover

Zero position Centre , Off-set zero *3

Increased sensitivity 4 kohm/V for voltmeters 1...600 V *310 kohm /V for voltmeters 15 ...150 V*3

AdjustmentResistance Within + 1 % at 23 0 C *3(Sensitivity)

Dial Standard scale same as measuring range , *1

Blank dial with division *3Additional lettering on request *3Additional numbering on request *3Coloured marking red or green *3Coloured sector red or green *3

Logo RISHABH *1, for Indian SalesC.G. * 1 , for export throughCrompton Greaves. I.D.Others *3

*1 standard

*3 Please clearly add the desired specifications while ordering


DS 72 measuring range 0 ... 20 mA, dial with 0...100 C, red mark0at 37 C.

0

Ordering example




* Instruments with damaged bezels or window glasses must be disconnected from mains.

* Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non-insulated connector wires are used.

* The back cover must be snapped into place after the connector wires have been clamped for protection against accidental contact.

* Scales should be replaced under Voltage- free conditions.

* Bezels and window glasses should be replaced under Voltage - free conditions.

Safety Precautions

*1

Specifications are subject to change without notice (02/09)

Data Sheet

BM 72

Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter


Rishabh Instruments 1 / 01 / I / VII / 1107


BM 96

EB 72

EB 96

Nominal case and cutout dimensions for : IS 2419indicating measuring instruments DIN 43700

Scale & pointer for electrical measuring IS 1248instruments DIN 43802


Safety requirements for Electrical : IS 9249indicating instruments and their DIN 40050 / 8-70,

VDE 0110 / 11-72 VDE 0410 / 10-76IEC 529 , IEC 1010

Performance specifications for direct : IS 1248acting indicating analogue electrical IEC51/DINEN60051measuring instruments & their accessories DIN 43701

Environmental conditions : IS 1248IS: 9000, Part 5, 7, 8,VDE / VDI 3540

Front frames for indicating measuring : DIN 43718instruments Principle dimensions

UL Combustibility Class

Comply with following European directives : : 89 / 336 / EEC (EMC

For Marking.

: UL 94 V-0

directive), 73/23/EEC (low voltage directive) & amendment 93/68/EEC,





Application

The maximum demand ammeters BM/EB 72/96 housed in mouldedpolycarbonate cases,monitor the most economic use of transformerstations & LT distribution feeders by indicating the thermal/timecharacteristics of the load.

The high torque of the thermal movement drive a red slave pointerlinked to the instrument pointer. The slave pointer will remain atthe maximum value reached for a subsequent reading until beingmanually reset by a sealable reset knob to the position of theinstrument pointer.

Where the instantaneous and maximum demand currents arerequired, the EB 72/96 instrument,which combines a thermalbimetallic and a moving - iron movement in the same case mounteddiagonally opposite to each other. These instruments are suitablefor frequency range of 15-400Hz.

These meters offer several advantages in Switchboard and Generating Set panels. Number of meters can be mounted in a single Cut out (Mosaic Mounting). The bezel, front window glass and dial can be easily replaced

:

Connections and Terminal markings for : IS 1248 panel meters DIN 43807

Clamp straps for connections : DIN 46282

Technical conditions of delivery for : DIN 43701

electrical instruments

Mechanical strength (Free fall test, : IS 1248, IEC 51,vibration test) IS 9000

VDE 0411, Part 1,Sec. 43/44, IEC 1010.

accessories.

Pointer

Pointer deflection

Scale characteristics

Scale division

Scale length

Over range

Knife - edge pointer00...90

Bimetallicquadraticbimetallic1.2 times rated--current

EB 72 Bimetallic Moving - iron 52 mm 61 mm

Coarse - fine

Scale and Pointer

moving - ironnear linearmoving - iron2 times rated--current

BM 72 Bimetallic --- 61 mm

Case details Moulded square case suitable formounting in Control/Switchgear panels,Machinery consoles.

Case material Glass filled polycarbonate,flame retardant and drip proofas per UL 94 V-0.

Front facia GlassColour of bezel BlackPosition of use VerticalPanel fixing Swivel screws

Mounting Stackable in a single cutoutPanel thickness <40 mmTerminals Hexagon studs, M4 screw and

wire clamps E3

Mechanical Data

:::

:

:

:

:

:

::::

:

::

Electrical DataMeasuring quantity AC currentsThermal time delay 15 minutes

Power consumption

1 A rated current

5 A rated current

BM 96

< 1.6 VA

< 2.5 VA

Continuously

Short duration

1.2 times rated current

10 times rated current, 1 sec max.

Enclosure code(IEC 529)

IP 40 caseIP 00 for terminals without backcoverIP 20 for terminals with backcover

::

:

:

:

(blimetalic) (8 min / 20 min on request):

Response time (moving iron) Approx 1s

EB 96

< 2.5 VA

< 3.4 VAOverload capacity (acc to IS 1248 / IEC 51)

:

Saturating current transformers shall be used to protect the movement against overload exceeding specified overload rating.

Insulation class Group A according to VDE 0110:

Rated insulation voltage 1000V:

Proof voltage testing 3 kV:Installation category 300 V CAT III:(IEC 1010)

Insulation resistence > 50 Mohm at 500 V d. c.:

EB 96 Bimetallic Moving - iron 71 mm 97 mmBM 96 Bimetallic --- 97 mm

Case

Front facia Antiglare glassColour of bezel BlackPosition of use on request 15 ...1650 0

Dial

Blank dial With init ial and end values marked. Special markings Numbering / Lettering.

Division dials Basic divisions without numbering.

Colour markings/band s Red or Green

Options


Accessories

Full sized polycarbonate back cover, to provide protection againstaccidental contact ( hand and fingers ) acc. to IS 9249, VDE 0410.




Accuracy classacc to IS : 1248/IEC 51/DIN EN 60051


Ambient temperaturePosition of useInputFrequency 45...65HZ

3 (bimetallic movementreferred to slave pointer)1.5 (moving - iron movement)

023 C + 2 C0

Nomial position +10

Rated value of current


Other conditions As per IS:1248 (IEC 51/ DIN EN 60051)

Nominal range of use

Ambient temperature 0----50 C0

Position of use Nominal position + 5%External magnetic field 0.5 mTFrequency 15-400Hz.


Bimetallic Moving - Iron For use on CT

1 A5 A

1 A5 A

(EB 96 /72)----/ 1 A----/ 5 A

Climatic suitability Climatic class 3 according to VDE/VDI 3540

Operating temperature - 10... + 550C

Storage temperature - 25... + 650C

Relative humidity

< 75% annual average, non-condensing

Shock resistance


15g. 11 ms

1.5 g at about 50 Hz


:

:::::

:

:::

:

:

:

:

:

:

Others

Calibrati on For other frequencies 15Hz...400 Hz.

Thermal time delay 8 min.

Saturating current transformer

Saturating transformer accuracy class 3, 50 Hz to protect the movem-ents against continuous overloads.

Functional Principle

The thermal bimetallic movement indicates the mean rms value over 15 minutes (optional 8 min & 20 min.) and deflects a resettable red slave pointer which shows the maximum value reached.

Bimetallic instruments have a specific inertia due to their thermaltime lag making these instruments especially suitable to indicatemaximum demands or to control long - lasting peak loads.

For the measurement of instantaneous rms values, a moving - ironmovement with pivot suspension, spring loaded shock absorbingjewel bearing and silicon oil damping is incorported.

The moving - iron movment has a response time of approx 1s.

Dimensions

Dimensions(in mm)

BM 72 EB 96

Bezel a 72

Case b 66

Depth c 53

d 67.5

5.5e

Cutout 68+0.7

Depth with Back cover64

Weight (approx.) 0.22 kg.

d a

c e

b

f

96

90

53

91.5

5.5

92+0.8

64

0.3 kg.

EB 72

72

66

53

67.5

5.5

68+0.7

64

0.26 kg.

BM 96

96

90

53

91.5

5.5

92+0.8

64

0.26 kg.

10-150 10Hz/0.15mm

Connections

For use on current Transformer

Direct - connected

L1

N(L2)

L1

N(L2)




72 mm x 72 mm


1 A5 A--- /1 A for use on Current transformer--- /5A for use on Current transformer

Standard scale same as measuring range *3Blank dial without division

*3Additional lettering on request *3Additional numbering on request

*3Coloured marking red or green*3Coloured sector red or green

*1

Maximum demand indicator with bimetallic movement

Vertical *1

On request 15 .... 1650 *3

Measuring Ranges

Type

Front dimension

Colour of bezel

Position of use

Dial

Logo


EB 96 for use on current transformer 300/5A thermal time delay15 min.


Ordering example

17 18

X

X

17 18

K L

lk

BM 72/96

Maximum demand indicator with bimetallic movement

EB 72/96

*1Normal glass *3Antiglare glass

Front facia

Black *3Red, Blue, Yellow, White

*1

2 times rated current *11.2 times rated current*31.2 times rated current

*1

Over rangeMoving Iron:-Bimtal movment:-Moving iron & bimetal

50 Hz *3For frequency 15 - 400 Hz

*1Calibration

15 min. *38 min.

*320 min.

*1

RISHABH

Calibration

Full sized polycarbonate back coverTerminal protection

Without ESW 1/5A, 4.25 VAESW 5/5A. 4.25 VA

*1 Saturating currenttransformer

1) Instruments with damaged bezels or window glasses must be disconnected from the mains.

Safety Precautions

2) Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing. Id non-insulated connector wires are used.

3) The back cover must be snapped into place after connector wired have been clamped for protection against accidental contact.

4) Scales may only be replaced under voltage-free conditions.

5) Bezels and window glasses may only be replaced under voltage- free Conditions.

96 mm x 96 mm

Data Sheet

Analogue Pointer - Type

Frequency Meter

FM 48

FM 72

FM 96

FM 144

Analogue Pointer - Type Frequency Meter


Rishabh Instruments 1 / 01 / I / V / 1107I

0

Frequencies are measured with a built in electronic transducer & moving coil indicator. Moving coil movement has pivots of very high hardness.Movement is suspended between spring loaded saphire jewels. Movement is properly shielded & critically damped by eddy currents

Case details Moulded square case suitable formounting in Control / Switchgear panels.Machinery consoles.

Case material Glass filled polycarbonate,flame retardant and drip proofas per UL 94 V-0.

Front facia Glass

Colour of bezel Black

Position of use Vertical

Panel fixing Swivel screws

Mounting Stackable in a single cutout

Panel thickness < 40 mm

Terminals Hexagon studs, M4 screwsAnd wire clamps E3

The pointer type frequency meters, FM 48/72 / 96/144 housed in mouldedpolycarbonate cases are suitable for the measurement of frequencies in therange of 45 to 450 Hz.

For maximum accuracy, the essential measuring range is obtained by supressing the unwanted frequency span.

These instruments offer several advantages in switchboard and Generating

Measured quantity :Frequency

Overload capacity (acc. to IS: 1248 / IEC 51)Continuously :1.2 times rated voltage

Short duration

Input quantity :Alternating voltage in sine waveform

:2 times rated voltage,5 sec

Enclosure code IP 52 case(IEC 529) IP 00 for terminals without back cover

IP 20 for terminals with back coverInsulation class Group A according to VDE 0110

Rated insulation voltage 660V Proof voltage 2KV

Installation catagory 600 V CAT III

Insulation resistancePower consumption <=7VA

> 50 Mohm at 500 V d.c

.

Pointer Knife - edge pointer

Pointer deflection 0...90

Scale characteristics linear *Scale Division Coarse - fine

Scale length FM 72 FM 96 FM 144 41mm 63 mm 97mm 146 mm

Accuracy class 0.5 according to IS: 1248(IEC 51/ DIN EN 60051)


Ambient temperature 23 C

Position of use Nomial position ++

Input Rated

o

Value of measured quantity

Other conditions

Preheating time

IS : 1248 (IEC 51/ DIN EN 60051)

>= 5 min


Ambient temperature 0...50 CPosition of use Nominal position

oC

External magnetic field

Voltage

0.5 mTRated

1

Voltage

Frequency Range 45.....50.....55 Hz

48.....50.....52 Hz 45.....55.....65 Hz 55.....60.....65 Hz 58.....60.....62 Hz 180...200...220 Hz 360...400...440 Hz

380...400...420 Hz

Rated input voltage57.7 V63.5V

o

5o+

+

o

20 %

FM 48



Rishabh Instruments

Application


Set Panels. Number of meters can be mounted in a single Cut out (Mosaicmounting). Front glass, Bezel & Dial can be easily replaced.

induced in coil former.

Mechanical Data

Electrical Data

Electrical Data


Scale and Pointer


100 V110 V115 V120 V127 V208 V220 V230 V240 V289 V380 V400 V415 V440 V440 V

2

1 / 01 / I / V / 1107I

1.5 g at about 50 H

Nominal case and cutout dimensions for : IS 2419indicating Electrical instruments DIN 43700Scale and pointer for electrical measuring IS 1248instruments DIN 43802Connections and Terminal markings for : IS 1248panel meters DIN 43807


Clamp straps for connections : DIN 46282Safety requirements and protective : IS 9249measures for Electrical indicating. DIN 40050/8-70,instruments and their accessories. VDE 0110/ 11-72 VDE 0410/ 10-76

IEC 529 , IEC 1010Performance specifications for direct : IS 1248acting indicating analogue electrical IEC51/DINEN60051measuring instruments and their accessories DIN 43701Environmental conditions : IS 1248

IS: 9000, Part 5, 7, 8,VDE / VDI 3540

Front frames for indicating measuring : DIN 43718instruments Principle dimensions

UL Combustibility Class : UL 94 V-0Technical conditions of delivery for : DIN 43701electrical instruments

Mechanical strength (Free fall test, : IS 1248 / IEC 51vibration test)

E M C compliance as per following standards:E N 50081-2,EN 50082-2,N 55011/CISPR 11,EN 60555-2,IEC 555-2EN 61000-4-4/IEC 1000-4-4,EN 61000-4-2/IEC 1000-4-2,EN 61000-4-5/IEC 1000-4-5,ENV 50140.comply with following european directives: 89/336/EEC (EMC directive),73/23/EEC(low voltage directive) & amendment 93/68/EEC, for CE

IS 9000VDE 0411, part 1,Sec. 43/44, IEC 1010

CaseFront facia Antiglare glassColour of bezel Red,Yellow ,Blue,White.Red index pointer Front adjustable on sitePosition of use on request 0 ....180 o

DialBlank dial With initial and end values marked.Special markings Numbering / Lettering.Division dials Basic divisions without numbering.Colour markings/bands Red or green

Full sized polycarbonate back cover to provide protectionagainst accidental contact (hand and fingers) acc.to IS 9249,VDE 0410.

Climatic suitability Climate category II as per IS : 1248(climatic class 3 according toVDE/VDI 3540)

Operating temperature - 10... + 55 C

Storage temperature - 25... + 65 CRelative humidity < 75% annual average, non-condensing

Shock resistance 15g, 11msVibration resistance 10-150-10 Hz / 0.15mm

z.

o

o

17 18

L1

N(L2)

d a

cf

e

b

Dimensions

(in mm)

Bezel a

Case bDepth c*

d

e

Cutout SizeDepth withBack cover f **

Weight (approx.)

FM72

72

66

53

67.5

5.5

68

64 640.21 kg. 0.28 kg.

FM96

96

90

53

91.5

5.5

92+0.7 +0.8

FM48

48

43.5

53

44.5

5.5

45

640.15 kg.

+0.6

640.49 kg.

FM144

144

136

53

137.5

5.5

138+1

.


Rishabh Instruments

o




Options

Accessories

Connections


Dimensions

marking.

:

1 / 01 / I / V / 1107I


* Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non - insulated

connector wires are used.

* The back cover must be snapped into place after theconnector wires have been clamped for protection againstaccidental contact.

* Scales should be replaced under Voltage- free conditions.

* Bezels and window glasses should be replaced underVoltage - free conditions.

standardPlease clearly add the desired specifications while ordering

*1

*3

.RISHABH INSTRUMENTS PVT.LTD.F-31, MIDC, Satpur, Nashik-422 007,India.Tel.: +91 253 2202160, 2202202 Fax : +91 253 2351064E-mail : India :- [email protected] International :- [email protected]

Rishabh Instruments


48 mm x 48 mm

144 mm x 144 mm


*3

Additional numbering on request *3*3Coloured marking red or green

*3

ed polycarbonate back cover




Pointer type frequency meter

Full siz


Black *1


Vertical *1

On request 0 .... 180 0 *3


Measuring Ranges

Type FM

Front dimension48

Terminal protection

Front facia

Colour of bezel

Position of use

Dial

Logo RISHABH

144

*1

72 mm x 72 mm96 mm x 96 mm

72

96


FM 72 Measuring range 45....50....55 Hz, rated voltage AC 230V

Ordering example

Safety PrecautionsOrdering Information

1 / 01 / I / V / 1107I

Data SheetAnalogue

Power Factor Meters

LF 96

Rishabh Instruments 1 / 01 / I / V / 1107


Analogue Power Factor Meters - LF

LF 144

LF 72

Application

Measured quantity

Electrical Data

Scale and Pointer





Case details

Case material

Front facia

Colour of bezel

Position of use

Panel fixing

Mounting

Panel thickness

Terminals

Mechanical Data

The moving coil indicators LF 72/96/144 and a phase angle adjusterare used to monitor changing power factor conditions on ir-reversiblebalanced load systems

The power factor is indirectly determined by measuring the phase angle between current and voltage (both sinusoidal). However the indicators are calibrated in values of cos of the angle .

öö ö

These meters offer several advantages in Switchboard & GeneratingSet panels.Number of meters can be mounted in a single Cut out (Mosaic Mounting).The Bezel,Front window glass and Dial can be easily replaced

Moulded square case suitable formounting in Control / Switchgear panels, Machinery consoles.

Glass filled polycarbonate,flame retardant and drip proofas per UL 94 V-0.

Glass

Black

Vertical

Swivel screws.

Stackable in a single cutout

< 40 mm

Hexagon studs, M4 screws andwire clamps E3 (DIN 46282)

Power Factor

Overload capacity (acc to IS : 1248/ IEC 51/ DIN EN 60051)

1.2 times rated voltage / currentContinuously

2 times rated voltage , 5 Sec max10 times rated current, 5 Sec max

Short duration

Power consumption(Approx):-

< 1.0 VACurrent path

IP 52 caseEnclosures codeIP 00 for terminals without backcoverIP 20 for terminals with backcover

(IEC 529)

Group A according to VDE 0110insulation class

660 VRated insulation voltage

2 kVProof voltage testing

300 VCAT IIIInstallation catagory(IEC 1010)

> 50 Mohm at 500 V d.c.Insulation resistance

Pointer Knife - edge pointer

Pointer deflection 0 ... 900

Scale characteristics Non - Linear

Scale division Coarse-fine

Scale length LF72 63mm

Interchangeability Scales are interchangeble.

:

:

:

:

:

:

:

:

:

:

:

::

:

:

< 3.0 VAVoltage path

Nominal case and cutout dimensions forindicating electrical instruments.

IS 2419DIN 43700

Scale and pointer for electricalmeasuring instruments.

IS 1248DIN 43802

Terminal bolts / leads DIN 46200/46282

Clamp straps for connections. DIN 46282

Safety requirements and protectivemeasures for Electrical indicatinginstruments and their acessories.

IS 9249DIN 40050 / 8-70VDE 0110 /11-72VDE 0410 /10-76IEC 529,IEC 1010

Performance specifications for directacting indicating analogue electricalmeasuring instrumentsand their accessories

IS 1248IEC 51/DIN EN 60051DIN 43701

Front frames for indicating measuringinstruments principle dimensions.

DIN 43718

Technical conditions of delivery forelectrical instruments.

DIN 43701

UL Combustibility class. UL 94 V-O

Mechanical strength (Free fall test,vibration test)

IS 1248, IEC 51IS 9000VDE 0411, part I,Sec.43/44.IEC 1010

:

:

:

:

:

:

:

:

:

:

Electro Magnetic Compatibility(EMC)Compliance as per followingstandards:- EN 50081-2,EN 50082-2,EN 55011/CISPR 11, EN 60555-2,IEC 555-2, EN 61000-4-4 / IEC 1000-4-4, EN 61000-4-2 / IEC 1000-4-2, EN 61000-4-5 / IEC 1000-4-5, ENV 50140.Comply with following European directives: 89/336/EEC( EMCdirective),73/23/EEC(low voltage directive)&amendment 93/68/EEC,for CE marking.

Connections & terminal markings for panel meters

: IS 1248DIN 43807

LF96 97mm

LF144146mm



Options




Type

E Single phase system


Accuracy class


Ambient temperature

Position of use

1.5 according to IS:1248(IEC 51/ DIN EN 60051)

0 023 C + 2 C0Nominal position + 1


Ambient temperature 00 ... 50 C

Position of use 0Nominal position + 5

0.5 mT

Rated voltage + 15%

20 to 120 % of rated current


Voltage

Current

Climate category II as per IS : 1248

(climatic class 3 according to

VDE / VDI 3540)0-10 ... + 55 C0-25 .... + 65 C

< 75% annual average, non-condensing

15g. 11ms

10-150-10 Hz/0.15 mm

1.5 g at about 50 Hz.


Operating temperature

Storage temperature

Relative humidity

Shock resistance


Antiglare glassRed, Yellow, Blue, WhiteFront adjustable on site

0 0on request 0 ....180

With initial and end values marked.Numbering /Lettering.Basic divisions without numbering.Red or green.

Case

Front facia

Colour of bezel

Red index pointer

Position of use

Dial

Blank dial

Special markings

Division dials

Colour markings/bands

Waveform SinewaveDistortion Factor <= 1 %current 95...100 % rated currentwarmup >= 5 minutes at min 80 % of rated

current and 100 % of rated voltage.Voltage Rated voltage + 2%Frequency 50 Hz +/ - 0.1%Others IS: 1248 (IEC 51/ DIN EN 60051)

Frequency 49-51 Hz for single phase

45-65 Hz for 3 phase

D 3 phase system balanced load

Measuring Ranges

COS ö cap 0.5....1...o.5 indCOS ö cap 0.8....1...o.3 indCOS ö cap 0.8....1...o.8 ind

Rated Voltage:

Following single phase and three phase voltages are available as standard. The voltages will be considered as a phase voltage(between phase & Neutral) in case of single phase meters and as a line voltage (between two phases) in case of multi phase 2 wire, 3 wire and 4 wire meters.

Please clearly specify the application (3 ph. 2 wire,3 wire or 4 wire)

57.5

63.5

100

110

120

127

220

230

240

289

380

415

440

500

Rated Current: 1A5A

Accessories

Safety terminal protection

Full sized polycarbonate back cover to provide protection against accidental contact (hand and fingers) acc to IS 9249 VDE 0410

Connections




Dimensions

d a

c

fe

b

Dimensions(in mm)

LF 96

Bezel a 96Case b 90Depth c 53

d 91.5e 5.5

Cutout Size 92Depth withBack cover f 64 64

Weight (approx.) 0.6 kg. 0.8 kg.

LF 144

14413653137.55.5138

+0.8 +1

X

XX

L1

L2

L3

k L

K I

1 3 5 8

LF 72/96/144 three phase balanced load

LF 72/96/144 Single phase

1 3 2 5

K I

Xk LL1

N(L2)

Schematic Diagram.


The measuring system comprises a moving coil indicator & phase angle converter attached to the case of indicating instrument. moving coil movements has pivots of very high hardness movement is suspended. between spring loaded saphire jewels. movement is properly shielded & critically damped by eddy currents induced in coil former.

A current transformer 1 of the phase angle converter provides inputcurrent to the electronic circuit. Both the input voltage and the currentare passed to a bistable filp-flop stage 2.

The pulse duty cycle of flip-flop is proportional to the phaseangle .A low pass filter allows the mean value which is proportional tothe phase angle and is fed to the moving coil movement 3.

Safety Precautions


* Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non - insulated connector wires are used.

* Scales should be replaced under Voltage - free conditions.


* Bezels and window glasses should be replaced under Voltage- free conditions

LF 72

72665367.55.568

64

0.55 kg.

+0.7

* The back cover must be snapped into place after the connector wires have been clamped for protection against accidental contact.

Rishabh Instruments 1 / 01 / I / IV / 1107



Power Factor meter

96 mm x 96 mm144mm x 144mm

Single phase systems

cap 0.5...1...0.5 indcap 0.8...1...0.3 ind,cap 0.8...1...0.8 ind


1A, 5A

Normal glass *1

Antiglare glass*3

Black Red, Blue, Yellow, White

Vertical On request 0 .... 180

Standard scale same as measuring rangeBlank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green

RISHABH


Type

LF

Front dimension72, 96 and 144

Type E

Measuring ranges

(COS )

Rated voltages

Rated currents

Front facia

Colour of bezel

Position of use

Dial

Logo


*1

*3

0 *3

*1

*1

*3

*3

*3

*3

*3

*1

*3

3 phase system balance loadD

full sized polycarbonate back coverTerminal protection

LF 96 D for 3 phase 4 wire system balancedload,measuring range ( cos ö ) cap 0.5...1...0.5 ind,rated voltage AC 230 V,rated current 1A.

Ordering exampleSpecifications are subjects to change without notice (02/09)

72 mm x 72 mm

Data SheetAnalogue

0Watt Meters 90 Scale

LM 96



Power Meters Active - Reactive - LM

LM 144

Pointer Knife pointerPointer deflection 0 ... 900

Scale characteristics LinearScale division Coarse-fineScale length LM96

97mm

Application

Measured quantity

Response time

Electrical Data

Scale and Pointer





Case details

Case material

Front facia

Colour of bezel

Position of use

Panel fixing

Mounting

Panel thickness

Terminals

Mechanical Data

The Watt meters, LM96/144 are offered for the AC systems-single phase-3 phase balanced load 3 or 4 wire-3 phase unbalanced load 3 or 4 wire

These instruments are suitable to indicate forward (export / out going)and reverse (import / in coming) power flow. They can be used both on sinusoidal and non - sinusoidal current

These meters offer several advantages in Switchboard and Generating Set panels. Number of meters can be mounted in a single Cut out (Mosaic Mounting).The Bezel, Front window glass and Dial can be easily replaced

Moulded square case suitable formounting in Control / Switchgear panels, Machinery consoles.Glass filled polycarbonate,flame retardant and drip proofas per UL 94 V-0.Glass

BlackVerticalSwivel screws.

Stackable in a single cutout< 40 mmHexagon studs, M4 screws andwire clamps E3

Active / Reactive Power4s max.1248/ IEC 51/ DIN EN 60051)Overload capacity (acc to IS :

1.2 times rated voltage / currentContinuously

2 times rated voltage , 5 Sec max10 times rated current ,5 Sec max

Short duration

Power consumption(Approx):-< 0.2 VACurrent path

Voltage path types

< 3.0 VAE1W, D1W, D1B, V1W, V1B

IP 52 caseEnclosures code

IP 00 for terminals(IEC 529)

Group A according to VDE 0110insulation class

660 VRated insulation voltage

2 kVProof voltage testing

300 VCAT IIIInstallation catagory

(IEC 1010)

> 50 Mohm at 500 V d.c.insulation resistance

IS 2419DIN 43700IS 1248DIN 43802IS 1248DIN 43807DIN 46200/46282DIN 46282IS 9249DIN 40050 / 8-70VDE 0110 /11-72VDE 0410 /10-76IEC 529,IEC 1010IS 1248IEC 51/DIN EN 60051DIN 43701DIN 43718

DIN 43701

UL 94 V-OIS 1248, IEC 51IS 9000VDE 0411, part I,Sec.43/44.IEC 1010IS: 1248IS: 9000, Part 5,7,8VDE / VDI 3540

Nominal case and cutout dimensions for indicating electrical instruments.Scale and pointer for electricalmeasuring instruments.Connections and Terminal markings forpanel meters.Terminal bolts / leadsClamp straps for connections.Safety requirements and protectivemeasures for Electrical indicatinginstruments and their acessories.

Performance specifications for directacting indicating analogue electricalmeasuring instrumentsand their accessoriesFront frames for indicating measuringinstruments principle dimensions.Technical conditions of delivery forelectrical instruments.UL Combustibility class.Mechanical strength (Free fall test,vibration test)

Environmental conditions

Electro Magnetic Compatibility(EMC)Compliance as per followingstandards:- EN 50081-2,EN 50082-2,EN 55011/CISPR 11, EN 60555-2,IEC 555-2, EN 61000-4-4 / IEC 1000-4-4, EN 61000-4-2 / IEC 1000-4-2, EN 61000-4-5 / IEC 1000-4-5, ENV 50140.Comlpy with following European directives: 89/336/EEC( EMCdirective),73/23/EEC(low voltage directive)&amendment 93/68/EEC,for CE marking.

:

:::

:

:

:

:

:

::

:

LM144 146mm

< 3.5 VAE1B< 3.4 VAD2W, D2B< 3.9 VAV3W< 4.3 VAV3B



Options




Type Active power

Single phase system E1W

selection of measuring range


Safety Precautions

Accuracy class

Reference conditionsAmbient temperature

Position of use

Input

Feasibility factor

Power factor

Voltage

Frequency

1.5 according to IS:1248(IEC 51/ DIN EN 60051)

0 023 C + 2 C0Nominal position + 1

Full-scale power value Pw or Pb"Lambda"=Pw/Ps or Pb / Ps

Cos = 1 + 0.01 for Watt meters &Sin = 1 + 0.01 for Var meters

öö

Rated voltage + 2%45-65 Hz (50 Hz +0.1% for E1B)

Current 20% to 120% of rated currentOthers IS: 1248 (IEC 51/ DIN EN 60051)

Electrical and mechanical zero point in the meter are not necessarilyidentical. Zero adjustment should be done when only voltage isapplied and current circuit not energised.


Ambient temperature 00 ... 50 CPosition of use 0Nominal position + 5

0.5 mTRated voltage + 15%Cos = 1 to 0.5 (ind.) for active powerSin = 1 to 0.5 (ind.) for reactive power45-65 Hz (50 Hz + 1% for E1B)

öö


Voltage

Power factor

Frequency

Climate category II as per IS : 1248(climatic class 3 according toVDE / VDI 3540)

0-10 ... + 55 C0-25 .... + 65 C

< 75% annual average, non-condensing15g. 11ms10-150-10 Hz/0.15 mm1.5 g at about 50 Hz.


Operating temperature

Storage temperature

Relative humidity

Shock resistance


Antiglare glassRed,Yellow,Blue,WhiteFront adjustable on site

0 0on request 0....180

With initial and end values marked.Numbering /Lettering.Basic divisions without numbering.Red or green.

Case

Front facia

Colour of bezel

Red index pointer

Position of use

Dial

Blank dial

Special markings

Division dials

Colour markings/bands

Apparant power Ps is calculated from primary ratings of currenttransformer and voltage transformer.

In single phase network, Ps = V . Iwhere V = voltage between phase and neutral & I = line current.

Full scale value i.e range of the instrument ( Pw = active power, Pb = reactive power) must be selected in such a way that the same remain between 0.5 times and 1.2 times the value of apparent power Ps.

Full scale values shall preferably be selected from standard series according to DIN 43701, 1-1.2-1.5-2-2.5-3-4-5-6-7.5-8 and their decadic / decimal multiples.

Rated voltage:-

For Single phase(E1W, E1B) :- 57.7, 63.5, 100, 110, 127, 220,

The voltage will be considered as a phase voltage (between phase an neutral) in case of single phase meters and as a line voltage (between two phases) in case of multi phase (2 wire, 3 wire and 4 wire) meters.

1A OR 5 AIf used on current transformer, please state transformer ratio on the order.

Rated current:-


* Adequate safety clearance must be maintained to controlpanel fasteners and to sheet metal housing, if non - insulatedconnector wires are used.

* Scales should be replaced under Voltage- free conditions.* Bezels and window glasses should be replaced under

Voltage - free conditions


Thus feasibility factor "Lambda" should be between 0.5 and 1.2where "Lambda" = Pw/Ps or Pb/Ps

Reactive power

E1B3 phase 3 wire system balanced load D1W D1B3 phase 4 wire system balanced load V1W V1B3 phase 3 wire system unbalanced load D2W D2B3 phase 4 wire system unbalanced load V3W V3B

In three phase network, Ps = 3 V . Iwhere V = voltage between two phase & I = line current.

v

289, 380.For Three phase (D1W, D1B, :- 100, 110, 220, 240, 380, 415,

500.D2W, D2B, V1W, V1B, V3W, V3B)




Watt and Var meter,90 o Scale

96 mm x 96 mm144mm x 144mm

Specify while ordering


1A, 5A

Normal glass *1

Antiglare glass*3

Black Red,Blue,Yellow,White

Vertical On request 0 .... 180

Standard scale same as measuring rangeBlank dial with divisionAdditional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green

RISHABH


LM 96 D V3W for active power 3 phase 4 wire system unbalancedload,measuring range 0 ... 480 kW, voltage AC 440 V, for use oncurrent transformer 600/5A.

Type

LM

Front dimension

96 and 144

Type

Measurng ranges

Rated voltages

Rated currents

Front facia

Colour of bezel

Position of use

Dial

Logo


*1

*3

0 *3

*1

*1

*3

*3

*3

*3

*3

*1

*3

Single phase systemsE1W E1B3 phase 3 wire system balanced load D1WW D1B3 phase 4 wire system balanced load V1W V1B3 phase 3 wire system unbalanced load D2W D2B3 phase 4 wire system unbalanced load V3W V3B

Ordering Example

Connections




Schematic diagram.


Dimensions

For active and reactive power measurement, a moving-coil indicatoris used to indicate watts and vars for which an analogue DC signalis obtained from a power converter attached to the case of theindicator.

The power converter uses one, two or three for multiplier systems 2 depending on the measurement of balanced or unbalanced load AC systems. Current transformers 1 provide the input current to the multiplier circuit.

The multipliers form the product of the instantaneous values ofcurrent and voltage (TDM principle). The product resultant isintegrated, thereby suppressing the AC ripple. Subsequently product proportional output is delivered to 3.There the voltage is converted into Current, whose magnitude also depends on Feasibility Factor ( ? ). Finally this current is fed to the moving coil movement, 4.

For the instrument DC power supply is obtained from input voltage, 5.

a

b

Dimensions(in mm)

LM 96

Bezel a 96Case b 90Depth c 106

d 91.5e 5.5

Cotout Size 92+0.8

Depth withBack cover f 64

Weight (approx.) 0.65-0.9 kg.

X X

X

L, 144

144136106137.55.5138

+1

64

0.9-1.1 kg.

a

ce

d b

Syncroscope Rish - SQ

www.rishabh.co.in Page 1 of 3 Version: 1/01/II/X/0912-A

ElectronicSynchroscope

Data Sheet

SQ 96

SQ 144

Power Supply I

Input I

Phase / LED

Adjustment Frequency Display Network Detector

Input II

Power Supply II

www.rishabh.co.in Page 2 of 3

ApplicationThe Electronic Synchroscope is designed to provide an illuminated indication of actual phase difference between the BUS Voltage(reference voltage) & the GENERATOR Voltage(incoming voltage)It denotes the actual frequency difference corresponding to the inverse of time taken for one rotation of the illuminated vector spot. When two alternators are paralleled,it is necessary that,1)Frequency must be equal. 2)Phase must be same.Sychroscope is,hence used to indicate the Phase & Frequency difference between two AC alternators,which are to be paralleled.

Description

he rotation of the vector spot is with reference to the bus voltage.If the vector spot LED turns clockwise,it indicates the GENERATOR frequency is greater than the BUS frequency. It means the speed of the generator must be reduced by the operator.If the spot LED turns anticlockwise,the GENERATOR frequency is less than BUS frequency.In this case speed of the generator must be increased.If ’T’ is the time taken for one rotation, the frequency difference can be calculated as 1/ T = A fExample: Let the bus frequency be 50 Hz.The vector spot takes 10 Sec. for one rotation,clockwise.1/10 = 0.1 Hz.The frequency difference = 0.1Hz. Hence we can infer that GENERATOR frequency is 50.1 Hz.If the Frequency & Phase of BUS signal matches with those of GENERATOR signal,the two green led’s at 12 o’clock position glow.If the Frequency matches & Phase does not, then one red led corresponding to the phase difference will glow.

Favorable condition for" Switching in" the Generator1. Ensure that the frequency difference between two inputs is within the requirements of user as follows: Measure time taken for 1 complete rotation of the vector spot inSECOND(T). The frequency difference will be Af = 1/T(Hz)2. Provided the frequency difference is within acceptable limits,wait till the SYNC mark LED s(two green LED s at 12 o’clock position)glow. At this instant , it is safe to CONNECT the GENERATOR to BUS


The Bus & Gen inputs are fed to the Frequency & Phase detection network.The output duty cycle of the network corresponds to the frequency difference between Bus & Generator Voltage. The detector network also determines the actual phase difference.

Mechanical Data

Case details Moulded square case suitable for mounting in Control / Switchgear panels, machinery consoles.Case material Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-O.Front facia GlassColour of bezel BlackPosition of use VerticalPanel fixing Swivel screws.Mounting Stackable in a single cutoutPanel thickness < 40 mmTerminals Hexagon studs, M4 screws and wire clamps E3 (DIN 46282)

Electrical Data

Measured quantity Frequency & Phase differencePower consumption 6 VA MaxEnclosures code IP 52 case(IEC 529) IP 00 for terminalsInsulation class group A according to VDE 0110Insulation voltage 660 VProof voltage 2kVFrequency range 35-70 HzPull in / drop out Freq. + / - 9 HzInstallation catogory 300 V CAT III(IEC1010)insulation resistance > 50 Mohm at 500 V d.c.Reference conditions

0 0Ambient temperature 23 C + 3 CInput Voltage Rated voltage + 2%Rated frequency 50 Hz + 0.1 %


Climatic suitability Climate category II as per IS : 1248 (climatic class 3 according to VDE / VDI 3540)

0Operating temperature - 10...+ 55 C0Storage temperature -20...+ 65 C

Relative humidity < 75 % annual average non - condensingShock resistance 15g, 11msVibration resistance 10-150-10 Hz / 0.15 mm / 5 Cycles / 10 octave per minute.


Nominal case and cutout dimensions for IS 2419indicating measuring instruments DIN 43700Connections and Terminal markings for IS 1248panel meters DIN 43807Terminal bolts / leads. DIN 46200/46282Clamp straps for connections DIN 46282Safety requirements and protective- IS 9249 - 1979measures for Electrical indicating- DIN 40050 / 8-70,instruments and their accessories. VDE 0110/ 11-72 VDE 0410/ 10-76 IEC 529 , IEC 1010Performance specification for direct IS 1248-1983acting indicating analogue electrical IEC 51/DIN EN 60051measuring instrument and their accessoriesEnvironmental conditions IS 1248 - 1983 IS: 9000 VDE / VDI 3540Front frames for indicating measuring DIN 43718instruments principal dimensionsUL Combustibility Class UL 94 V-0Technical conditions of delivery for DIN 43701electrical instrumentsMechanical Strength IS 1248/IEC 51(Free fall test,Vibration test) IEC 1010, IS 9000-1979 VDE 0411,part 1 Sec 43/44

Options

CaseFront facia Antiglare glassColour of bezel Red,Yellow,Blue,White.Colour of LED s Orange,Yellow

DialSpecial markings Numbering / Lettering.

Version: 1/01/II/X/0912-A

Connections

Dimensions

Dimensions (in mm) SQ 96 SQ 144

Bezel a p96 p144Case b p90 p136Depth c 106 106 d p137.8p 91.5 e 5.5 8.5

+0.8 +1Cutout Size p 92 p 138Weight (approx.) 0.60Kg 0.70Kg

Safety Precautions Instruments with damaged bezels or window glasses must be disconnected from mains. Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing,if non-insulated connector wires are used. Bezels and window glasses should be replaced under Voltage - free conditions.


www.rishabh.co.in Page 3 of 3


Type SQ Electronic Sychroscope Front Dimension 96,144 96 mm x 96 mm , 144 mm x 144 mm Rated voltages Refer to selection table inside

*1 Front facia Normal glass *3 Antiglare glass

*1 Colour of Bezel Black*3 Red, Blue, Yellow, White

0 Position of use Vertical (0-360 )*3 Dial Additional lettering on request

*3 Additional numbering on request

*1 Logo RISHABH ,for Indian Sales.*1 C.G ,for export through

Crompton Greaves I.D.*3 Others

*1 Standard*2 Please clearly add the desired specifications while ordering

Ordering example

SQ 96, rated voltage AC 230 V.


Type Terminal

BUS 1-3 1-2

GEN 4-6 4-5

SQ – 96 SQ – 144

440V 240V 480V 110V 127V

380V 220V 415V 100V 120V

Version: 1/01/II/X/0912-A

Data Sheet

Analogue Meters with

Moving Iron Movement

Analogue Meters With Moving Iron Movement

RISHABH INSTRUMENTS PVT .LTD.F-31, MIDC, Satpur, Nashik-422 007, India.Tel.: +91 253 2202160, 2202202 Fax : +91 253 2351064E-mail : India :- [email protected] International :- [email protected]

Web : www.rishabh.co.in

Page 1 of 4

1 / 01 / I / XV / 0710 / A

Two in OneEQ - 96

±

Application

Movement

PointerPointer deflectionScale characteristics

Scale divisionScale length

Over RangeAmmeters 2 times nominal currentVoltmeters Scale Interchangeability

Knife - edge pointer0...90Near Linear above 10% of nominal full Scale valueCoarse - fine

1.2 times nominal voltageInterchangeable

Scale and Pointer

Nominal case and cutout dimensions for : IS 2419indicating Electrical instruments DIN 43700

Scale and pointer for electrical measuring : IS 1248instruments DIN 43802

Connections and Terminal markings for : IS 1248panel meters DIN 43807


Safety requirements and protective : IS 9249measures for Electrical indicating. DIN 40050instruments and their accessories. VDE 0110

VDE 0410IEC 529, IEC 1010

Performance specifications for direct : IS 1248acting indicating analogue electrical IEC51/DINEN60051measuring instruments and their accessories DIN 43701Environmental conditions : IS 1248

IS : 9000VDE / VDI 3540

Front frames for indicating measuring : DIN 43718instruments Principle dimensionsUL Combustibility Class : UL 94 V-0


Measured quantity AC Power consumption:

Voltmeters < 4.5VAAmmeters < 15A < 0.5VAAmmeters > 15A < 0.8 VAOverload capacity

Continuously

Short durationVoltmeters

Ammeters 10 times for 0.5 sec : 9 overloads 10 times for 5 sec : 1 overload

Enclosure code(IEC 529)

Insulation class

Rated insulation 2 in 1 EQ

Proof voltage

Installation category

Insulation resistance

voltage or current

(acc. to IS: 1248 / IEC 51)

1.2 times rated voltage /current

2 times for 0.5 sec : 9 overloads

IP 52 caseIP 00 for terminals without back coverIP 20 for terminals with back cover

Group A according to VDE 0110

3KV

> 50 Mohm at 500 V DC

Electrical Data

Case details Moulded square case suitable formounting in Control / switchgear panels Machinery consoles.

Case material Polycarbonate ,flame retardant and drip proofas per UL 94 V-0.

Front facia GlassColour of bezel BlackPosition of use VerticalPanel fixing Mounting ClampMounting Stackable in a single cutoutPanel thickness

£ 25 mm

TerminalsVoltmeters and Hexagon studs, M4 screws and Ammeters < 30A wire clamps E3Ammeters > 30A Threaded studs M6 with Nuts

Mechanical Data

Accuracy class

Ambient temperaturePosition of use

Input Waveformsine

Frequency: 45...65HZ

Other conditions

1.5 according to IS : 1248

(IEC 51/ DIN EN 60051)

23 C ± 2Nominal position 1

wave,distortion factor <= 5 %Rated value of measured quantity

IS : 1248 (IEC 51/ DIN EN 60051)

Reference Conditions


Moving iron movement has pivots of very high hardness.Movement suspended between spring loaded saphire jewel and silicon jewel.Movement is critically damped by use of silicon oil.

voltage



2 times for 5 sec : 1 overload

600V CAT IIIComply with following European directives : : 2004 / 108 / EC (EMC

For Marking.

directive), 2006/95/EC (low voltage directive) & amendment 93/68/EEC,

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:

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:

:

:

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:

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:

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C

Page 2 of 4

1 / 01 / I / XV / 0710 / A

The moving iron panel meters, 2-in-1 housed in moulded polycarbonate cases are suitable for the measurement of AC currents for frequency range of 15...400Hz and voltages in the frequency range of 15...100Hz.

Moving iron meters indicate rms-values practically independent of waveform even of high harmonics. Error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100Hz.These meters offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a single cut out (Mosaic mounting). Front window, Glass and bezel can be easily replaced.

54mm

1000V

±

Over range (Ammeters)

Ambient Temperature 0...50 C

Position of use

Frequency 45 ... 65Hz

External magnetic field At 0.4 kA/m


Climatic suitability Climate category II

(climatic class 3 according to VDE/VDI 3540)

Operating temperature - 10... + 55 CStorage temperature - 25... + 65 C

Relative humidity <

75% annual average, non-condensing

Shock resistance


15g for pulse duration 11 ms 10-55-10Hz for ampli. 0.15mm


CaseFront facia Antiglare glassColour of bezel Red, Yellow , Blue, WhiteRed index pointer Front adjustable on sitePosition of use On request 0 ...180

Dial

Blank dial With initial and end values marked. Special markings Numbering / Lettering.Division markings Basic divisions without numbering. Colour markings/bands Red or green

Options


Accessories

1) Instruments with damaged bezel or glasses must be disconnected from the mains.

Safety Precautions

A.C. Voltage 6V 10V 15V

25V

40 V

60 V

For use on voltage transformer

.../100 V secondary

.../110 V secondary For use with Current transformer

.../1A secondary or .../5A secondary

A.C. Current


2) Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing. If non - insulated connector wires are used.

3) The back cover must be snapped into place after connector wires have been clamped for protection against accidental

4) Bezel, Scale and Glass may only be replaced under voltage free conditions.

Full sized polycarbonate back cover to provide protectionagainst accidental contact (hand and fingers).


Vertical 5

Two, three and five times over range Six times over range

-



n

5) Instruments to be used in grounded panel.

contact.

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:

:

:::::

as per IS : 1248, IEC 60051

(1.5 g at 50Hz)

:

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:

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:

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:

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100V 120V 132V

150V

250V

300V 400V 500V

100mA150mA 250mA

400mA600mA1A1.5A2.5A 3A

4 A 5 A

6A

15A 20A 25A

Pollution degree : 2

40A

Non-Standard ranges available on request.

600V

Page 3 of 4

1 / 01 / I / XV / 0710 / A

10A

30A

50A60A

Any combination Ammeter / AmmeterVoltmeter / VoltmeterAmmeter / Voltmeter

In case of Ammeter / Ammeter 1 meter could be upto 60A but 2nd one will be only upto 10A

Connections

Dimensions

AC Current (for use on currentTransformer)

AC Current (Direct connected)

AC Voltage (Direct connected)

L1

N(L2)

L1

N(L2)

L1

N(L2)


96 mm x 96 mm

er


*3

Additional numbering on request *3*3


v

Coloured marking red or green *3

ed polycarbonate backco



2 times, 3 times 6 times, 5 times


Moving-iron panel meter

full siz

Mounting Clamps

None


Black *1


Vertical *1

On request 0 .... 180 *3


Over range (Ammeters)

Measuring Ranges

Type DE

Front dimension

96

Terminal protection

Panel Fixing

Red Index Pointer

Front facia

Colour of bezel

Position of use

Dial

Logo RISHABH *1


EQ 30A - EQ 500V

Specifications are subject to change without notice

Ordering example

11 12

11 12

K L

11 12

k l

*1



*1

Required*3

Polycarbonate glass*3

1 / 01 / I / XV / 0710 / A

Page 4 of 4

Dimensions (in mm)

Bezel a

Case b

Depth c*

d

e

cutout sizeDepth with

back cover f **

Weight appro.

EQ96

96

90

53

91.5

5.5+0.892

64

0.2 kg* c = 62 mm, for l > 30A & upto 60A

For Voltmeters &Ammeters upto 25A For Ammeters > 25A

a b d

ef

c

a b d

ecf

EQ 300V - EQ 500VEQ 30A - EQ 5A

analogue meters with moving - iron movement - de meters... · analogue meters with moving - iron...

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