Baker DX Instrument Overview
12 Baker DX 71-030 User Guide EN V10 www.megger.com
Power Packs
The Baker power packs are high-powered impulse generators used to test very large, high-
voltage windings. Output is controlled by a variable transformer that ranges from 2,000 volts up
to a maximum of 40,000 volts (Baker PP30 x85: 30,000V; Baker PP40: 40,000V).
These units perform Surge and DC/HiPot tests when used with the Baker DX tester as the control
and display. They incorporate a supply monitor for safe operation from a well-grounded supply.
In addition, 60kV rated test lead cables are provided.
Voltage rise time is 100–200 nanoseconds, so the power packs comply with IEEE Standard 522-
2004 and IEC Standard 34-15 when testing motor windings and coils.
The power packs are housed in a mobile case on wheels. They provide power and accessory
connections from the Baker DX, as well as lead storage in a convenient portable unit. The Baker
PP40 power pack is shown in the image below.
Figure 8. Power pack example.
NOTICE: For setup and test procedures using power packs, refer to the Megger Baker Power Packs User
Manual.
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