Cooper QD3 - Page 52

QD3 Quik-Drive Voltage Regulator Tap-Changer Manual
52
Tap-Changer R emoval F rom
Voltage Regulator
1. Remove the internal position indicator shaft from the tap
changer indicator drive tube. (See Figure 147.)
2. Use a pair of diagonal side cutters to cut and remove
the cableties from the control winding hard insulation
tube and tapchanger top bracket assembly. (See Figure
148.)
Figure 147.
Internal flex shaft.
Internal
Flex
Shaft
Tapchanger
Internal Drive Tube
Cable Tie
3. Use a 9/16 inch socket and ratchet to loosen and
remove the nut and carriage bolt fastening the tap
changer bracket to the regulator side channel. (See Fig-
ure 149.)
Figure 148.
Control cable fastening.
Figure 149.
Tap-changer and side channel fastener.
Carriage Bolt Nut
4. Use a Phillips head screwdriver to loosen and remove
the TCB terminal board leads from the 14 position ter-
minal board located on the top right of the QD3 tap
changer. (See Figure 150.)
TABLE 17
Lead Color and Termination Points
Lead Color TCB Connection
Blue/White 1
Green/White 5
Blue 9
Green 10
Orange 11
Red/Black 13
White G
Figure 150.
TCB lead color and termination points.
White Position G
Red/Black
Position 13
Orange Position 11
Green Position 10
Blue Position 9
Green/White
Position 5
Blue/White
Position 1