Appendix L
:
Retrofitting onto CL-6 Cooper
Siemens Industry, Inc.
79
Installing the MJ- Control Panel
As a guide, follow the Siemens MJ- instruction manual.
1) Turn MJ- power switch to OFF and remove fuses before starting installation.
2) On MJ-, remove wiring from bottom terminal block to remove PDS plug and wires
from the control panel.
3) Install retrofit wiring as labeled to MJ- (table below) and tighten all screws, including
those not used. On the MJ- terminal block, terminal P2A-1 starts at the left side of the
bottom terminal block.
4) Check labeling on phoenix connector plug on retrofit wiring to be sure it matches
labeling on Cooper phoenix connector receptacles at bottom of the control enclosure.
5) Remove hinges from left side of MJ- and remove magnet and bracket from right side.
6) Install retrofit hinges on right side of MJ- to match Cooper hinge pins.
7) Install retrofit kit latch onto left side of MJ- to match Cooper cabinet threaded hole.
8) Hang MJ- retrofit hinges onto Cooper hinge pins to mount MJ- into Cooper control
enclosure.
9) Connect the MJ-
to the back panel at “TB2”, located at the bottom of the back panel.
10) Push closed the disconnect switch, V1 (and V6 if present) to energize MJ- and check
all voltages.
11) Pull open the current shorting switch, C.
Warning! Do not pull open the current shorting switch, C, until both
ends of the interconnecting cable are secure. Failure to do so could
open the regulator CT secondary causing a flashover to the control.
12) Swing the MJ- control panel closed. Tighten the panel locking screw.
13) Install fuses and turn power on.
Configuring the MJ- Control Panel
1)
For “Regulator Type”, select “Inverted”
2)
For “Util Winding Pol”, select “Normal”
3) For Cooper regulators without a differential PT, enter the control winding (E) voltage
in “U2PT” and “P2PT” screens.
4) For Cooper regulators with a differential PT, enter the control winding (E) voltage in
“U2PT” screen, and enter the differential transformer voltage ratio in the “P2PT”
screen. Set the power flow mode to “BI-DIR.”
5)
For Tap Changer type, enter “COOP QD” for Quick Drive (“COOP SD” is for spring
drive; “COOP DD” is for direct drive).
Note: The control winding (E) voltage, differential transformer voltage, CT ratio,
“I
Full Load,” “I Load Max,” and other parameters may be read from the regulator
nameplate.
