Vertiv 581126000, Руководство пользователя, Страница: 200 / 208

Vertiv
| +24 VDC Power System User Manual (Section 6013) | Rev. G
200
Replacing a List RA, RB Battery Disconnect Contactor
Refer to SAG581126000 for contactor part numbers.
When performing the following procedure, refer to Figure 27 .
Removing the Contactor
DANGER! All sources of AC and DC power must be completely disconnected from this power system
before performing this procedure. Use a voltmeter to verify no DC voltage is present on the system
busbars before proceeding.
1. Open the Distribution Cabinet's front door by turning and holding the captive fastener in the
counterclockwise position.
2. Disconnect all battery wiring from the Contactor Assembly input busbar. If necessary, refer to the
separate INSTALLATION INSTRUCTIONS (SECTION 6012) for connection locations.
3. Disconnect the Contactor Assembly linking busbar from the system busbar as shown at SYSTEM
BUSBAR CONNECTION in
Figure 27 .
4. Loosen but do not remove (1) 12-24 x 1/2" mounting screw at bottom of contactor mounting plate, as
shown in
Figure 27 .
5. Remove (2) 12-24 x 1/2" mounting screws at top of contactor mounting plate, as shown in Figure 27 .
6. Lift the Contactor Assembly up off bottom mounting screw. Remove the assembly far enough to access
the terminals on the side of the coil body. Note the positions of the wire connections so that they can
be correctly reconnected later in the procedure. Disconnect the lug that terminates (1) Violet and (1)
Violet/White wire. Remove the Contactor Assembly to a work surface.
7. Disconnect from the coil body the lug that terminates (1) Red/White wire.
8. Note the orientation of the contactor with respect to the input and linking busbars. Remove the
hardware that secures the input and linking busbars to the contactor.
Installing the New Contactor
NOTE!
In the following procedure, before making busbar-to-busbar connections, apply a thin coating of
electrical anti-oxidizing compound to the mating surfaces of the busbars.
1. Install the linking and input busbars on the new contactor. First, apply a thin coating of electrical anti-
oxidizing compound to the mating surfaces of the busbars. Tighten the bolts as specified in
Figure 27 .
2. Connect to the coil body the lug that terminates (1) Red/White wire.
3. Install the Contactor Assembly into the Distribution Cabinet far enough for the (1) Violet and (1)
Violet/White wire removed in Step 6 to reach the terminals on the coil body. Connect the lug that
terminates the two wires to the terminal on the coil body.
4. Position the Contactor Assembly on its mounting plate, and lower over the bottom mounting screw.
5. Install (2) 12-24 x 1/2" mounting screws at top of contactor mounting plate, as shown in Figure 27 .
6. Tighten the lower mounting screw.