Eaton Electrical ASY0567, ASY0673, ASY0529 manual Input Control Signal Wiring for MBB Bypass Switch

UPS WITH BYPASS ELECTRICAL INSTALLATION

13.If the bypass switch is an MBB style, notice the cable routed out of the left side of the bypass switch cabinet. Connect the red and black pair of wires (normally open) in this cable to terminals 3 and 4 as shown in Figure 20. (Do not connect the white and black pair of wires in this cable.)

C A U T I O N

EPO and external bypass circuits are not isolated from line voltage, and wiring must be installed according to local codes using conduit or suitable primary supply cables.

The Generator On signal is isolated from line voltage and can be treated as NEC Class 2 wiring.

Use 14–20 AWG, 600V wire (UL) or 14–26 AWG, 300V wire (CSA) for all input control signals.

Generator On (normally open)

Signal

Common

Plastic Cable Tie

Emergency Power-off (normally closed)

External Bypass *(short to common when active)

Figure 20. Input Control Signal Wiring (for MBB Bypass Switch)

32 Eaton 9170+ UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality