TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Omega, Model HHM590
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 60 V dc
Accuracy: (0.5% rdg + 1 dgt)
AC VOLTAGE
Range: 0 to 600 V ac
Accuracy: 50 to 60 Hz, (1.2% rdg + 4 dgts);
40 to 50 Hz and 60 to 500 Hz, (2.0% rdg + 4 dgts)
AC CURRENT
Range: 0 to 1000 A ac
Accuracy: 50 to 60 Hz, (1.5% rdg + 4 dgts); 40 to 50 Hz and 60 to 500 Hz,
(3.5% rdg + 5 dgts); 700 to 1000 A,
50 to 60 Hz, (2.0% rdg + 4 dgts)
Range: 0 to 200 kΩ
Accuracy: (1.2% rdg + 2 dgts)
Table 231. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
1.8
2
1.790
1.810
180
200
179.0
181.0
540
600
537.2
542.8
Table 232. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
180 @ 40 Hz
200
176.0
184.0
180 @ 50 Hz
200
177.4
182.6
180 @ 60 Hz
200
177.4
182.6
180 @ 500 Hz
200
176.0
184.0
Table B-233. AC Current (≤500 A) (w/50 Turn Coil).
Calibrator output
Test instrument
Applied
Range
Limits (A dc)
(A ac)
(A ac)
Min
Max
0.36 @ 40 Hz
20
17.32
18.68
0.36 @ 50 Hz
20
17.69
18.31
0.36 @ 60 Hz
20
17.69
18.31
0.36 @ 500 Hz
20
17.32
18.68
3.6 @ 40 Hz
200
173.2
186.8
3.6 @ 50 Hz
200
176.9
183.1
3.6 @ 60 Hz
200
176.9
183.1
3.6 @ 500 Hz
200
173.2
186.8
B-66