Emerson 7ATB - Manual - manualsarea.com

Page 3 - Catalog Number Identification; Typical 7000 Series ATB catalog no. for overlapping

Catalog Number Identification Typical 7000 Series ATB catalog no. for overlapping neutral, 3 pole, 4000 amp., 480 V, in Type 1 enclosure: G7ATB C 3 4000 N 5 C Phase Poles Neutral A – solid Amperes Voltage Controller Enclosure B – switching 5X – if accessoriesordered 5 – standard G – type 4 C – type ...

Page 5 - SECTION 1 INSTALLATION; Remove the Shipping Skid; To prevent serious damage, remove 3 shipping; remove 3 or 4 shipping brackets ( L–angles)

1 --- 1 SECTION 1 INSTALLATION The ASCO 7000 Series Automatic Transfer &Bypass–Isolation Switch (ATB) consists of an upperbypass–isolation switch, a lower transfer switch, amonitoring and transfer controller, and door–mountedcontrols. The ATB is factory wired and tested.Installation requires rem...

Page 6 - INSTALLATION; Wiring Diagram

INSTALLATION (continued) 1 --- 2 De–energize the conductors before making any line or auxiliary circuitry connections. Be sure that Normal and Emergency line connections are in proper phase rotation. Place engine gen- erator starting control in the OFF position. Make sure engine generator is not in ...

Page 7 - Functional Test; Wiring Diagrams; Section 3; – Voltage Checks; Use extreme caution when using a meter

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...

Page 8 - – Electrical Operation; Transfer Test; Isolation Handle

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...

Page 9 - SECTION 2 TESTING & SERVICE; TRANSFER TEST; Electrical Operation – Transfer; PREVENTIVE MAINTENANCE; Return to Service

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...

Page 10 - MANUAL LOAD TRANSFER; CLOSED; MAINTENANCE HANDLE

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...

Page 11 - SECTION 3 BYPASSING & ISOLATING; You can only bypass to the same source; To Bypass Normal Source*; ISOLATING

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...

Page 12 - BYPASSING & ISOLATING; ISOLATING THE ATS; BYPASSING; TEST

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...

Page 13 - Drawout procedure

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...

Page 14 - RETURN TO SERVICE; NOTE

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...

Page 15 - To Un–Bypass Normal Source*

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...

Page 16 - INDEX; Controller User’s Guide

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...

Emerson 7ATB - Manual

Table of Contents:

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