TB 9-6625-2146-24
Table 7. Ac Current
Multimeter indications (V ac)
Westinghouse,
General Electric,
Model PA5
Weston, Model 749
Model AK-4
20 to 135 Hz
at 400 Hz Only
Weston, Model 528
Weston, Models 633
Test
ME-65/U and
ME-79/USM-33
25 to 500 Hz
Series and 749 At
instrument
ME-79A/USM-33
ME-65A/U, Weston
60 Hz only
range
Models 155 and 904
50 to 1000 Hz
ME-489/U
25 to 500 Hz
r0.5%
r2%
r3%
r5%
Min
Max
Min
Max
Min
Max
Min
Max
15 mA
---
---
0.98
1.02
---
---
---
---
50 mA
---
---
0.98
1.02
---
---
---
---
100 mA
---
---
0.98
1.02
---
---
---
---
.5 A
0.995
1.005
0.98
1.02
---
---
---
---
1 A
0.995
1.005
0.98
1.02
---
---
---
---
2 A
0.995
1.005
---
---
---
---
---
---
2.5 A
0.995
1.005
---
---
---
---
---
---
3 A
0.995
1.005
0.98
1.02
---
---
---
---
5 A
0.995
1.005
0.98
1.02
---
---
---
---
6 A
---
---
---
---
0.97
1.03
0.95
1.05
10 A
0.995
1.005
0.98
1.02
0.97
1.03
---
---
15 A
0.995
1.005
0.98
1.02
0.97
1.03
0.95
1.05
20 A
0.995
1.005
---
---
---
---
---
---
25 A
0.995
1.005
---
---
0.97
1.03
---
---
30 A
---
---
0.98
1.02
0.97
1.03
0.95
1.05
50 A
0.995
1.005
0.98
1.02
0.97
1.03
---
---
60 A
---
---
---
---
0.97
1.03
0.95
1.05
100 A1
0.995
1.005
---
---
0.97
1.03
---
---
150 A1
---
---
---
---
0.97
1.03
0.95
1.05
200 A1
0.995
1.005
---
---
---
---
---
---
250 A1
---
---
---
---
0.97
1.03
---
---
300 A1
---
---
---
---
0.97
1.03
0.95
1.05
500 A1
---
---
---
---
0.97
1.03
---
---
800 A1
---
---
---
---
0.97
1.03
---
---
1000 A1
---
---
---
---
0.97
1.03
---
---
2000 A1
---
---
---
---
0.97
1.03
---
---
1Check
these ranges at the maximum capability of the ac power supply and ac current calibrator.
12. Final Procedure
a. Deenergize and disconnect all equipment and reinstall protective cover on TI.
b. Annotate and affix DA Label/Form in accordance with TB 750-25.
13/(14 Blank)
