TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Greenlee, Model CM-1550
Table B-145. Calibration Description.
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 1000 V dc
Accuracy: 400 V range, (0.7% rdg + 0.2 V); 1000 V range, (0.7% rdg + 2 V)
AC VOLTAGE
Range: 0 to 750 V ac
Accuracy: 50 to 500 Hz: 400 V range, 0.0 to <60.0 V, (1.0% rdg + 0.7 V);
60.0 to 400.0 V, (1.0% rdg + 0.5 V); 750 V range, (1.0% rdg + 5 V)
PEAK HOLD
Range: 0 to 750 V ac
Accuracy: (3.0% rdg + 20 dgts), 0 to 750 V p
DC CURRENT1
Range: 0 to 1000 V dc
Accuracy: 400 A range, (1.0% rdg + 0.3 A); 1000 A range, (1.9% rdg + 7 A)
AC CURRENT1
Range: 0 to 1000 A
Accuracy: 400 A range: 0.0 to 60.0 A @ 50 to 60 Hz, (1.5% rdg + 0.7 A); 0.0 to
60.0 @ 61 to 400 Hz, (1.9% rdg + 0.7 A); 60.0 to 400 A @ 50 to 60
Hz, (1.5% rdg + 0.5 A); 60 to 400 A @ 61 to 400 Hz, (1.9% rdg +
0.5 A); 1000 A range: 400 to 1000 A @ 50 to 60 Hz, (1.9% rdg +
7 A); 400 to 1000 A @ 61 to 400 Hz, (2.5% rdg + 7 A)
PEAK HOLD
Accuracy: (3.0% rdg + 20 dgts), 0 to 800 A p
Range: 0 to 400 Ω
Accuracy: (1.0% rdg + 0.3 Ω)
FREQUENCY (A ac MODE)
Range: 0.020 to 0.400 kHz
Accuracy: (0.1% rdg + 0.002 kHz)
Sensitivity: 3 A rms
Ensure coil is positioned in center of probe jaws. Improper placement can add position error of up to 1% indication.
1
Table B-146. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
120
400
119.0
121.0
280
400
277.8
282.2
360
400
357.3
362.7
-360
400
-362.7
-357.3
900
1000
892
908
B-42
