TB 9-6625-174-24
APPENDIX B
PERFORMANCE TABLES
Hioki, Model 3281
Table B-20. Calibration Description.
Test instrument parameters
Performance specifications
AC VOLTAGE
Range: 0 to 600 V ac
Accuracy: 45 to 66 Hz, (1.0% rdg + 3 dgts); 40 to 45 Hz and 66 Hz to 1 kHz,
(1.5% rdg + 5 dgts)
AC CURRENT
Range: 0 to 600 A ac
Accuracy: 30 A range: (1.0% rdg + 0.7% f. s.) 40 Hz to 1 kHz; 300 A and
600 A ranges: (1.0% rdg + 5 dgts) 45 Hz to 66 Hz,
(1.5% rdg + 5 dgts) 40 Hz to 45 Hz and 66 Hz to 1 kHz
Range: 10 Ω to 10 kΩ
Accuracy: (1.5% + 5 dgts)
Range: 30 to 1 kHz
Accuracy: Auto ranging: (0.3% + 1 dgt); 100/1000 ranges: (1.0% + 1 dgt)
Table B-21. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
270 @ 40 Hz
300
267.4
274.6
270 @ 50 Hz
300
267.0
273.0
270 @ 1 kHz
300
267.4
274.6
540 @ 40 Hz
600
531.4
548.6
540 @ 50 Hz
600
534.3
545.7
540 @ 1 kHz
600
531.4
548.6
Table B-22. AC Current (≤500 A) (w/50-Turn Coil).
Calibrator output
Test instrument
Applied
Range
Limits (A ac)
(A ac)
(A ac)
Min
Max
0.54 @ 40 Hz
30
26.52
27.48
0.54 @ 1 kHz
30
26.52
27.48
5.4 @ 40 Hz
300
265.4
274.6
5.4 @ 50 Hz
300
266.8
273.2
5.4 @ 1 kHz
300
265.4
274.6
Table B-23. 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 @ 40 Hz
20
600
531.4
548.6
1.08 @ 50 Hz
20
600
534.1
545.9
1.08 @ 1 kHz
20
600
531.4
548.9
Table B-24. Resistance.
Calibrator output
Test instrument
Limits (%/Ω)
Applied
Range
(Ω)
(Ω)
Min
Max
190
1000
-1.736% (186.7)
+1.736% (193.3)
1.9 k
10.00 k
-1.736% (1867)
+1.736% (1933)
B-5
