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DC and Surge Tests Voltages
Recommended Test Voltages
Megger Baker Instruments has a recommended standard (see table) for test voltages for DC tests
and Surge tests conducted on a motor, generator, or transformer. That standard is twice the AC
line voltage plus 1,000 volts.
This test voltage is consistent with NEMA MG-1, IEEE 95-1977 (for test voltage greater than
5,000 volts) and IEEE 43-2000 (test voltages less than 5,000 volts).
View other standards in the tables below for a comparison of IEEE 95, EASA DC-HiPot, IEEE 522
Surge testing, IEC 34-15, and Megger recommended testing voltages.
NOTE: The tables list representations of motors, as well as the formulas to calculate voltages so that you can
calculate test voltage of any size motor.
Table 6. Megger Baker Instruments recommended voltages.
V Line
Per Unit
In Service, 2E + 1,000
480
392
1,960
575
469
2,150
600
490
2,200
2,300
1,878
5,600
4,160
3,397
9,320
6,900
5,634
14,800
13,800
11,268
28,600
NOTE: Use the “Peak Voltage” value shown on the screen to obtain the proper test voltages.
Table 7. IEEE 95 for HiPot test.
V Line
Per Unit
Min Test,
V Line × 1.25 × 1.7
Max Test,
V Line × 1.5 × 1.7
480
392
1,020
1,224
575
469
1,222
1,466
600
490
1,275
1,530
2,300
1,878
4,888
5,865
4,160
3,397
8,840
10,608
6,900
5,634
14,663
17,595
13,800
11,268
29,325
35,190
Summary of Contents for Baker DX
Page 1: ......
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Page 10: ...Table of Contents viii Baker DX 71 030 User Guide EN V10 www megger com...
Page 28: ...Baker DX Instrument Overview 18 Baker DX 71 030 User Guide EN V10 www megger com...
Page 38: ...Baker DX User Interface Overview 28 Baker DX 71 030 User Guide EN V10 www megger com...
Page 58: ...Setting up the Baker DX Tester 48 Baker DX 71 030 User Guide EN V10 www megger com...
Page 149: ...megger com 139 RIC Templates Figure 141 RIC template 1...
Page 150: ...RIC templates 140 Baker DX 71 030 User Guide EN V10 www megger com Figure 142 RIC template 2...
Page 155: ...Index megger com 145...
Page 156: ...megger com 146...
