PP30/PP40/PP85 - Surge/HiPot PowerPack

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The PP30, PP40 and PP85 power packs are high powered impulse generators used to test very large high voltage windings. The output is controlled by a variable transformer from 2,000 volts up to a maximum of 40,000 volts (PP30 and PP85 - 30,000V; PP40 - 40,000V)

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The power packs perform both surge and DC HiPot tests when used with the D12R or AWAIV-12 (PP30) as the control and display. They incorporate a supply monitor to insure safe operation from a well grounded supply. In addition, 60kV rated test lead cables are provided.
The key element of the surge test circuit is a grounded grid hydrogen thyratron tube. The tube conducts very high peak current (1000's of amps). Such high instantaneous currents are needed to fully test very low impedance windings of large motors or form wound coils. This current is only produced for a few microseconds by the discharge of a 0.1 microfarad capacitor.
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 DC HiPot test can also be done with the power packs along with the D12R or AWAIV-12 (PP30). Test voltages are set by the output control from 2,000 volts to 40,000 volts. Current is displayed and a trip circuit monitors the test. If current exceeds the trip level, the test is automatically halted. In its most sensitive setting, the protective circuit will operate as low as 10ľA.
In addition, the D12R, or the AWAIV-12 also monitors current. This provides a redundant level of safety for the DC HiPot test.
The power packs are housed in a mobile case on pneumatic wheels. They provide power and accessory connections from the D12R, or AWAIV-12 as well as lead storage in a convenient portable unit. These features make these power packs powerful testers.