GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) User Manual
Page 128
7.2.17 IGBT Modules 41/43 Units
1.
Remove the control card cassette per instructions.
2.
Remove the input terminal mounting plate per instructions.
3.
Note the IGBT gate signal cables connected between the gate drive card connectors MK100 (temperature sensor), MK102 (U), MK103 (V), and MK104 (W)
and the IGBT module connectors. 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. Remove the capacitor bank per instructions.
4.
Disconnect the gate drive cables at the connectors on the IGBT modules.
5.
Disconnect the cable connected to connector MK100 on the high frequency card.
6.
Remove the high frequency card by removing 2 retaining screws and 1 retaining nut.
6a
For units with a brake option, the DC input bus assembly must be removed to access and remove the bus bars between the IGBT bus bar
assembly and the brake IGBT. Remove the DC input bus bar assembly per steps 3–5 of SCR/Diode Module Removal (D1 units).
6b
For units with brake option, remove the bus bars between the IGBT bus bar assembly and brake IGBT by removing two T25 retaining screws
on brake IGBT (not shown) and two 8 mm retaining nuts on the IGBT bus bar assembly (not shown).
7.
Remove the 3 IGBT output bus bars 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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130BX90.10
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Illustration 7.1: 41/43 IGBT Module (1 of 2)
1
IGBT output bus bar BB9 (Step 7)
6
Retaining nut (Step 6)
2
DC input bus bar assembly BB3 (Step 6A)
7
Do not remove (Step 6)
3
Retaining screw (Step 6)
8
Gate drive cable glands (Steps 3 & 4)
4
High frequency card
9
IGBT module
5
Connector MK100 (Step 5)
10
IGBT output bus bar retaining nut (Step 7)
AF-650 GP and AF-600 FP High Power Service Manual
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