TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Gardner Bender, Model GCM-500
Table B-223. Calibration Description.
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 60 V dc
Accuracy: 4% FS of range
AC VOLTAGE
Range: 0 to 600 V ac
Accuracy: 5% FS of range
AC CURRENT
Range: 0 to 600 A ac
Accuracy: 5% FS of range
Range0 to 1 kΩ
Accuracy: 4 arc of scale length
Table B-224. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
54
60
51.5
56.5
Table B-225. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
54 @ 60 Hz
60
51
57
270 @ 60 Hz
300
255
285
540 @ 60 Hz
600
510
570
Table B-226. AC Current (≤500 A).
Calibrator output
Test instrument
Applied
Range
Limits (A dc)
(A ac)
(A ac)
Min
Max
5.4 @ 60 Hz
6
5.1
5.7
Table B-227. AC Current (≤500 A) (w/50 Turn Coil).
Calibrator output
Test instrument
Applied
Range
Limits (A dc)
(A ac)
(A ac)
Min
Max
1.08 @ 60 Hz
60
51
57
Table B-228. AC Current (≤1000 A) (w/50 Turn Coil).
Calibrator output
Ammeter calibrator
Test instrument
Applied
Range
Range
Limits (A ac)
(V ac)
(A ac)
(A ac)
Min
Max
1.08 @ 60 Hz
20
600
510
570
Table B-229. Resistance.
Calibrator output
Test instrument
Limits (Ω)
Applied
Range
(Ω)
(Ω)
Min
Max
190
R
180
200
B-65
