Connecting DC Emergency Lighting Cables (Optional). Vertiv NetSure 801 CAA

Figure 38: Mains input cable connection to AC distribution cabinet (automatically switch AC distribution cabinet)

2N

1N 1C 1B 1A

2C

2B 2A

Terminal of route one input cable

Terminal of route two input cable

1N 1C 1B 1A

2N 2C 2B 2A

Top view

Rear view

Connecting DC Emergency Lighting Cables (Optional)

Connection of AC distribution cabinet and DC distribution cabinet

The DC emergency lighting contactor is an optional part that locates at the bottom part of the AC distribution cabinet, as shown in Figure 39 . (removing the panel). In the event of AC mains failure, the AC monitoring circuit closes the DC emergency lighting contactor, and then 48V voltage is available at its output terminal.

Choose a 100A load fuse in the DC distribution cabinet to supply DC power for emergency lighting, and then connect this fuse to the DC contactor by means of cable (which should be sized for the emergency lighting power).

Follow the steps below to connect the emergency lighting cables.

1. Determine the cable length according to the actual wiring route.

2. Add cable lugs to both ends of the cables.

3. Connect one end of the positive cable (cable 2) to the positive busbar of the DC distribution cabinet, and one end of the negative cable (cable 1) to the load fuse in the DC distribution cabinet.

4. Connect the other end of the positive cable (cable 2) to the positive emergency lighting busbar, and the other end of the negative cable (cable 1) to the DC contactor, as shown in Figure 39 .

5. Connect one end of the positive emergency lighting cable to the positive emergency lighting busbar, and the other end to the positive terminal of the emergency lighting. Connect one end of the negative emergency lighting cable to the bottom terminal of the emergency lighting MCB, and the other end to the negative terminal of the emergency lighting, as shown in Figure 39 .

Vertiv | NetSure 801 CAA Series Power Supply System Instruction Manual 57