GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 72)

6.1.3 Test Cables
The test cables bypass the main DC bus capacitors and supply DC voltage to the power card from the soft charge card. This provides voltage for testing the power
card without the frequency converter circuitry being powered. The SCR shorting plug ensures that the SCRs do not fire. There are two cable types, the 4x-frame
frequency converters use the 2-pin cable and the 5x-frame frequency converters use the 3-pin cable (see the illustrations below). The 4x-frame cable connects
to the wire harness above the power card by the SMPS fuse to the power card connector MK105. The 5x-frame connects between the soft charge connector MK3
and the power card connector MK105.
130BX64.10
Illustration 6.2: SCR Shorting Plug
Illustration 6.3: Two-Pin 4x-frame Test Cable
Illustration 6.4: Three-Pin 5x-frame Test Cable
AF-650 GP and AF-600 FP High Power Service Manual
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