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Moving Coil 240 Long Scale Instruments |
DESCRIPTION |
Moving coil instruments with circular scale of 240° employ a platinum taut band for suspension of moving coil assembly instead of pivot & jewel system. It is less prone to sluggishness & zero shift due to frictionless movement.
These meters are basically used for the measurement of DC current & voltage, and can be used with built in rectifier for the measurement of AC current & voltage in the frequency range 45~65Hz. / 400Hz. The meters measure average value. It can be scaled to indicate RMS values (on request).
These instruments are not recommended for non-sinusoidal waveforms of current & voltage. The other indications like Frequency, Power & Power factor can be offered with suitable external transducers. Speed indication is possible if used with AC tacho-generator (not in the scope of AE). |
FEATURES |
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Long scale instruments. |
ELECTRICAL SPECIFICATIONS |
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TYPE |
MOVING COIL 240°. |
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OPERATING VOLTAGE |
60mV to 600V. |
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OPERATING CURRENT |
500µA to 30A & Above 30A with external shunt. |
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ACCURACY CLASS |
2.5 for SQ48, 1.5 for SQ72 & SQ96, 1.0 for SQ14 4, SQ110. |
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DIELECTRIC TEST |
2kV RMS for 1 min. |
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OPERATING TEMP. |
-10°C to 55°C |
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STORAGE TEMP. |
-20°C to 70°C |
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HUMIDITY |
Up to 95% RH |
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CONFORMS TO |
I.S. 1248 / I.E.C. 60051 (Part 2) |
MODEL |
SQ 48 |
SQ 72 |
SQ 96 |
SQ 144 |
SQ 110 |
ACCURACY CLASS |
2.5 |
1.5A |
1.0A |
1.0A |
1.0A |
D.C.AMMETER (MIN.) |
0-500µA |
(MAX.) |
0-100mAB |
0 - 30AC |
D.C.VOLTMETER (MIN.) |
0 - 60mV |
(MAX.) |
0-150mVB |
0 - 600V |
A.C.AMMETER (MIN.) |
0-10mAB |
0 - 10mA |
(MAX.) |
0-30AB |
0 - 30A |
A.C.VOLTMETER (MIN.) |
0-10VB |
0 - 10V |
(MAX.) |
0-600VB |
0 - 600V |
FREQ. METER |
POSSIBLEB |
40Hz TO 100Hz AT 110V ~ 440V |
WATT / VAR METER |
POSSIBLEB |
POSSIBLED |
1PH, 3PH-2 / 3E :110V~440V,1A/5A |
POSSIBLEE |
VA METER |
POSSIBLEB |
POSSIBLED |
3PH-2 / 3E : 110V~440V, 1A/5A |
POSSIBLEE |
PF METER |
POSSIBLEB |
POSSIBLED |
1PH, 3PH-1E : 110V~ 440V, 1A / 5A |
Note : Range below minimum & above maximum on request if feasible. |
A |
Accuracy Class 0.5 for all Frequency meters, 1.5 for SQ96,SQ144,SQ110, AC Ammeter,
AC / Ammeter / Voltmeter & Power meter, 2° for all Power Factor meter, |
B |
SQ48 - i) DC / AC Voltmeter, AC Ammeter with external box. ii) Frequency meter, Power meter with external transducer box. |
C |
For higher ranges use AE external shunts. (Refer Data Sheet for Shunts). |
D |
SQ72 - Power & Power factor meter with external transducer box. |
E |
SQ 110-Power meter with external transducer box. |
MECHANICAL SPECIFICATIONS |
MODEL |
SQ 48 |
SQ 72 |
SQ 96 |
SQ 144 |
SQ 110 |
FLANGE (mm) |
48 x 48 |
72 x 72 |
96 x 96 |
144 x 144 |
110 x 110 |
PANEL CUTOUT(mm) |
45 x 45+0.6 |
68 x 68+0.7 |
92 x 92+0.8 |
138 x 138+1.0 |
100 Ø,
5 Ø, 4 holes
90x90 |
DEPTH
(mm) |
DC |
55 |
55 |
55 |
60 |
100 |
AC |
55 |
75 |
75A |
60A |
100 |
SCALE LENGTH (mm)(Appro.) |
70 - 75 |
105 -110 |
150 - 155 |
225 - 230 |
175 - 180 |
WEIGHT
(gms.)
(Appro.) |
DC |
200 |
250 |
300 |
500 |
450 |
AC |
200 |
350 |
400B |
600B |
650 |
A |
Depth 100mm for SQ96 & SQ144 Power meter. |
B |
Weight 1.2kg for SQ96 Power meter, 1.5kg for SQ144 Power meter. |
Ordering information |
For all Models |
1) Type 2) Model 3) Range |
Additional information for
power and power factor measurments. |
4) frequency 5) Operating Voltage 6) Operating Current 7) PTR 8) CTR. |
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