GENERAL OPERATION
This section describes general operation of the Meter. When
making measurements of any type, refer to this section.
Always prepare the Meter for use by reading and following the
Preparation for Use section of this manual. (Section 3.0)
WARNING!
THE GCM-620 IS INTENDED FOR USE ONLY BY PERSONNEL
TRAINED IN THE PROPER SAFETY PROCEDURES AND WHO CAN
RECOGNIZE SHOCK AND SAFETY HAZARDS.
Specifi cations
Electrical Specifi cations
Accuracy is given as +/-(percent of reading + number of digits)
at 18ÞC to 28ÞC with a relative humidity of up to 80%, for a
period of one year after calibration. The temperature coef-
fi cient for accuracy is approximately 0.1 times the specifi ed
accuracy per degree C.
AC Voltage
Range
400V
600V
Range Selection:
Input Resistance:
Overload Protection:
AC Current
Range
400A
1000A
Crest Factor:
Range Selection:
Overload Protection:
Common AC Specifi cations
Calibration:
Frequency Response:
DC Voltage
Range
400 V
600 V
Range Selection:
Input Resistance:
Overload Protection:
Resolution
Accuracy
0.1V
1.0% + 3 dgts
1V
1.2% + 5 dgts
Fully automatic
10 megohms
600 VRMS.
Resolution
Accuracy
0.1A
2.0% + 5 dgts
1A
2.5% + 10 dgts
<3 for <400A, <2 for 400 to 1000A
Fully automatic
1000 ARMS.
True RMS
45 Hz to 1000 Hz
Resolution
Accuracy
0.1 V
0.5% + 2 dgts
1 V
0.8% + 3dgts
Fully automatic
10 megohms
600 VRMS.
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