GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) User Manual
Page 125
7.2.16 IGBT Modules 42/44 Units
1.
Remove the capacitor banks per instructions.
2.
Note the IGBT gate signal cables connected between gate drive card connectors MK100 (temperature sensor), MK102 (U), MK103 (V), and MK104 (W)
and IGBTs. These will need to be reconnected in the same locations during reassembly. Units with a brake option will have brake cabling from MK105
in addition. Disconnect the cables at the connectors on the IGBT modules.
3.
Remove the retaining nuts (8 mm) from the SCR input bus bars.
4.
Note the colour coding for each of the three wires attached to the retaining studs. Ensure that the correct wire is attached to the applicable stud during
reassembly. Remove the wiring from the studs.
5.
Remove screw (T25) from terminal 1 of each SCR/diode module by accessing the screw through the access hole in the SCR/diode input bus bar. Remove
the SCR input bus bars.
6.
Remove each IGBT output bus bar by removing the nut (10 mm) from the stud. Also remove retaining screw (T30) at the other end of the IGBT output
bus bars (not shown).
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130BX91.10
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Illustration 7.1: 42/44 IGBT Modules (1 of 3)
1
SCR/diode input bus bar BB21 or BB22 per drive power rating
5
Snubber capacitor
2
SCR/diode terminal screw (Step 5)
6
IGBT output bus bar retaining nut (Step 6)
3
SCR/diode input bus bar retaining nut and stud (Steps 3 & 4)
7
SCR/diode terminal screw (Step 5)
4
IGBT gate signal input terminal (Step 2)
8
IGBT output bus bar BB32 (Step 6)
AF-650 GP and AF-600 FP High Power Service Manual
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