Appendix N
:
Retrofitting onto a GE Regulator
Siemens Industry, Inc.
84
N: RETROFITTING AN MJ5, MJ-XL or MJ-4A CONTROL PANEL ONTO A GE
REGULATOR WITH A SM3 CONTROL PANEL
Retrofit Kit Contents
- Instructions and drawings 21-204-071-401
- GE Hinges (2)
- PDS plug (1)
- 6-point terminal block (1)
- Crimp lugs (5)
- Terminal lugs (17)
- Mounting Plate (1)
- DIN Rail (1)
- Metal Bracket (1)
- Latch (1)
-
0.625” Philips-head screws (2)
-
0.25” Philips-head screws (6)
-
0.375” Philips-head screws (4)
- Lock washers (12)
- Hex nuts (2)
- Washers (4)
- Cable Tie base (2)
- Cable Tie (7)
- Wire labels (1 set)
Removing the GE SM3 Control Panel:
Follow the GE instruction manual for removing the control panel, which should include, but is not
limited to the following steps.
1) Take the Voltage Regulator out of Service.
2) Remove the GE plug from the bottom of the voltage regulator Position Indicator ( this
shorts the CT and opens the PT ).
3)
Remove the GE circuit board (“Disconnect Assy.”) from the back of the control
enclosure. Make a note of where the jumper(s) are at the J1-J2, J3-J4, & J5-J6
positions. This information will be used to help connecting the proper PT ratio later.
4) Unplug the existing Buchanan terminal block. Leave the wires connected to this
terminal block for now.
5) Remove the pins from the hinges on the right side of the GE front panel (keep the
pins for step 12 (Installing). Cabinet should now be empty except for the Buchanan
terminal block with the wires connected from the Position Indicator.
6) Remove the SM3 Control Panel from the enclosure.
7) Take the existing hinges from this SM3 panel and mount them to the right side of the
MJ- Control Panel.
