TB 9-6625-2146-35
Table 5. Ac Voltage
Ac voltage standard indications (V ac)
Weston, Model 904
50 to 125 Hz
TS-340
Weston, Model 433
25 to 400 Hz
25 to 125 Hz
Weston, Model 430
Westinghouse, Model
25 to 2000 Hz
Test
PY-4
Weston, Model 904
Weston, Model 433
Weston, Model 455
instrument
15 to 200 Hz
125 to 450 Hz
125 to 2500 Hz
25 to 1000 Hz
range
0.5%
0.75%
1%
1.25%
Min
Max
Min
Max
Min
Max
Min
Max
3
2.985
3.015
---
---
2.97
3.03
---
---
4
---
---
---
---
---
---
---
---
5
---
---
4.9625
5.0375
---
---
4.937
5.063
7.5
7.4625
7.5375
---
---
7.425
7.575
---
---
8
---
---
---
---
---
---
---
---
10
---
---
9.925
10.075
---
---
9.875
10.125
15
14.925
15.075
14.888
15.112
14.85
15.15
14.812
15.188
20
---
---
19.85
20.15
---
---
19.75
20.25
30
29.85
30.15
29.775
30.225
29.7
30.3
29.625
30.375
50
49.75
50.25
49.625
50.375
---
---
49.375
50.625
60
---
---
59.550
60.450
---
---
59.45
60.75
75
74.625
75.375
74.438
75.562
74.25
75.75
74.062
75.937
125
---
---
124.06
125.94
---
---
123.44
126.56
150
149.25
150.75
148.88
151.12
148.5
151.5
148.12
151.88
175
---
---
---
---
---
---
---
---
250
---
---
248.12
251.88
---
---
246.88
253.12
300
298.5
301.5
297.75
301.25
297.0
303.0
296.25
303.75
350
---
---
---
---
---
---
---
---
400
389.0
402.0
---
---
---
---
---
---
450
---
---
446.62
453.38
---
---
444.38
455.62
600
---
---
595.50
604.50
---
---
592.50
607.50
700
---
---
---
---
---
---
---
---
750
746.25
753.75
744.38
755.62
742.5
757.5
740.62
759.38
Table 5. Ac voltage continued
Ac voltage standard indications (V ac)
General Electric, Model
Weston, Model 749
AK-4, Weston, Models 749
400 Hz only
Test
and 633-VA1 At 60 Hz
ME-79/USM-33
instrument
Weston, Model 528
only
ME-79A/USM-33
range
25 to 125 Hz
ME-489/U
50 to 1000 Hz
2%
3%
5%
Min
Max
Min
Max
Min
Max
3
2.94
3.06
---
---
---
---
4
3.92
4.08
---
---
---
---
5
---
---
---
---
---
---
7.5
---
---
---
---
---
---
8
7.84
8.16
---
---
---
---
10
---
---
---
---
---
---
15
14.7
15.3
---
---
---
---
11
