Emerson 7ATB - Manuals

INSTALLATION (continued) 1 --- 3 observe these lights Transfer Switch Connected To Normal Transfer Switch Connected To Emergency Normal Source Accepted Emergency Source Accepted Transfer Control Retransfer Delay Bypass Transfer Test HOLD FOR 15 SECONDS RED RED GREEN GREEN ( ) Figure 1-2. Standard co...

INSTALLATION (continued) 1 --- 4 observe these lights Transfer Switch Connected To Normal Transfer Switch Connected To Emergency Normal Source Accepted Emergency Source Accepted Transfer Control Retransfer Delay Bypass Transfer Test HOLD FOR 15 SECONDS RED RED GREEN GREEN ( ) operate this switch Fig...

SECTION 2 TESTING & SERVICE 2 --- 1 TRANSFER TEST Test the Automatic Transfer Switch portion of the 7000 Series ATB at least once a month. This procedure checks the electrical operation of the Transfer Switch and Controller. Put the engine–generator starting con- trol (at the engine–generator se...

TESTING & SERVICE (continued) 2 --- 2 TROUBLE-SHOOTING Note any optional accessories that may be furnished on the ATB and review their operation. Refer to any separate drawings and/or instructions that may be packed with the ATB. Hazardous voltage capable of causing shock, burns, or death is use...

SECTION 3 BYPASSING & ISOLATING 3 --- 1 BYPASSING THE ATS* This procedure explains how to Bypass the closed automatic transfer switch contacts. Bypassing is required before the ATS can be tested or isolated. The Bypass Handle must be in the OPEN position (green indicator) and the Isolation Handl...

BYPASSING & ISOLATING (continued) 3 --- 2 ISOLATING THE ATS Isolating is required before any service work can be performed on the automatic transfer switch (ATS). Refer to Figures 3–4, 3–5, 3–6, and 3–7. 1. Bypass the closed automatic transfer switch contacts. See BYPASSING on page 3–1. Align po...

BYPASSING & ISOLATING (continued) 3 --- 3 left support leg right support leg locking pin with clevis pin locking pin with clevis pin adjust length to touch floor adjust length to touch floor Drawout procedure grasp two handles 1. Bypass and Isolate the ATS, then open both lower doors. 2. Pull ou...

BYPASSING & ISOLATING (continued) 3 --- 4 RETURN TO SERVICE This procedure explains how to return the automatic transfer switch (ATS) to service after inspection and maintenance. Observe the Bypass Switch Position indicator and lights). Refer to Figures 3–7a, 3–7b, 3–8, 3–9, and 3–10. 1. Slide t...

BYPASSING & ISOLATING (continued) 3 --- 5 RETURN TO SERVICE continued* This procedure explains how to return the Bypass Switch Handle to the OPEN position. The Bypass Handle must be in the CLOSED position (yellow indicator on NORMAL or EMERGENCY ) and the Isolation Handle must be in the TEST pos...

INDEX Printed in U.S.A. E ASCO Power Technologies, L.P. 2009 A auxiliary circuits, 1–2 B bus connections, 1–2bypassing the ATS, 3–1 C catalog number, inside covercleaning, 2–1connections power, 1–2 controller disconnecting, 2–1 see Controller User’s Guide D drawout, transfer switch, 3–2, 3–3 E elect...