T1689 Technical Manual Rev 07 Maintenance
MV3000 Air Cooled DELTA Spares & Servicing
Page 149
8.8 SPARES & SERVICING
8.8.1 Spares
There are no recommended spares for the DELTA modules or the control components except for the pre-
charge protection fuses for the MVR1600 rectifier module (see Section 8.8.3: Pre-Charge Fuses).
If either a DELTA module or a control component is suspected of being faulty it should be returned to GE Power
Conversion for servicing.
8.8.2 Servicing
Before removing a module for return to GE Power Conversion for servicing the user should ensure that the
facilities, skilled personnel and the appropriate lifting equipment are available to replace the module. Detailed
instructions are included earlier in Section 1: Introduction.
When any equipment is being returned for servicing it is important that all the details available about the
conditions under which the equipment failed are conveyed, preferably in writing, with the returned equipment.
When referring to GE Power Conversion about any modules the serial number for the suspect item must
always be quoted. Any references to replacement ribbon cables should quote the part number from the
original ribbon/connector.
8.8.3 Pre-Charge Fuses
The recommended pre-charge protection fuse for the MVRL1600-4601 rectifier module is:
GE Power Conversion reference S82028/310.
Bussmann type KTK-8. Rated at 8 A, 600 V a.c.
Cartridge size 10 x 38 mm
NOTE: Replacing these fuses with another rating or type will invalidate safety approvals.
Three pre-charge fuses are located on the upper printed circuit board which is located at the rear of the
rectifier module.
8.9 CAPACITOR REFORMING
If this equipment is kept in store for long periods of time, usually greater than two years, it may be necessary to
reform capacitors before putting the equipment of which they are a part into service. This requirement applies
to the d.c. link capacitors on the DELTA transistor module. Refer to Section 5.2.2 / 5.2.3. for further
information on Electrolytic Capacitor Shelf Life and Procedures after Removing DELTA Transistor Bridge
Modules from Long Periods of Storage.
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