Emerson 7ADTB- Manual

Page 2 - Nameplate; The Transfer Switch nameplate includes data for each; Catalog Number Identification; Typical 7000 Series ADTB catalog no. for overlapping

Nameplate The Transfer Switch nameplate includes data for each specific 7000 Series ADTB. Use the switch only within the limits shown on this nameplate. A typical Catalog Number is shown below with its elements explained. Catalog Number Identification Typical 7000 Series ADTB catalog no. for overlap...

Page 4 - INSTALLATION; Engine Starting Contacts; To temporarily disable engine control from; Auxiliary Circuits; Functional Test; The Functional Test consists of two checks:; – Voltage Checks

INSTALLATION (continued) 1 --- 2 Engine Starting Contacts All customer connections, including the engine controlcontact connections, are located on terminal block TBwhich is mounted on the top right side of the enclosure.Refer to the wiring diagram provided with the automatictransfer switch and conn...

Page 5 - Wiring Diagrams; Section 3; Use extreme caution when using a meter

INSTALLATION (continued) 1 --- 3 RED RED GREEN GREEN observe these lights AMBER Figure 1-2. Standard controls and indicators. Functional Test Read all instructions on the Wiring Diagrams and labels affixed to the 7ADTB. Note the control features that areprovided and review their operation before pro...

Page 6 - – Electrical Operation; Close enclosure door before proceeding to prevent; Transfer Test; Isolation Handle

INSTALLATION (continued) 1 --- 4 RED RED GREEN GREEN observe these lights AMBER operate this switch Figure 1-3. Standard controls and indicators. 2 – Electrical Operation This procedure checks electrical operation of the ADTS. Close enclosure door before proceeding to prevent personal injury in case...

Page 7 - SECTION 2 TESTING & SERVICE; Electrical Operation – Transfer

SECTION 2 TESTING & SERVICE 2--1 TRANSFER TEST Test the Automatic Transfer Switch portion of the 7000 Series 7ADTB at least once a month. This procedure checks the electrical operation of the Transfer Switch and Controller. Put the engine–generator starting control (at the engine–generator set) ...

Page 8 - MAINTENANCE HANDLE; Move the maintenance handle up or down as shown

TESTING & SERVICE (continued) 2--2 TROUBLE-SHOOTING Note any optional accessories that may be furnished on the 7ADTB and review their operation. Refer to any separate drawings and/or instructions that may be packed with the 7ADTB. See Table B. Hazardous voltage capable of causing shock, burns, o...

Page 9 - ALL POWER MUST BE OFF !; Transfer Switch Position

TESTING & SERVICE (continued) 2--3 handle shaft extension frame UP opens the Emergency source contacts DOWN closes the Emergency source contacts UPPER SHAFT Figure 2–2. Maintenance handle operation for Emergency source contacts (upper shaft). handle shaft externsion frame UP closes the Normal so...

Page 10 - SECTION 3 BYPASSING & ISOLATING; OPEN; Allowable Positions of the Bypass Switch; (with Isolation Handle in the

SECTION 3 BYPASSING & ISOLATING 3 --- 1 Figure 3–1. Status lights and Engine Control. TRANSFER SWITCH CONNECTED TO NORMAL CONNECTED TO EMERGENCY Lower red light is on if Transfer Switch is on Emergency. Upper green light is on if Transfer Switch is on Normal. Figure 3–2. Status lights for Transf...

Page 11 - BYPASSING & ISOLATING; To Bypass Normal Source*; ISOLATING

BYPASSING & ISOLATING (continued) 3 --- 2 To Bypass Normal Source* To Bypass Emergency Source* (Load connected to Normal Source) The Transfer Switch Connected To Normal light is on and Transfer Switch Connected To Emergency light is off. (Load connected to Emergency Source) The Transfer Switch C...

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

BYPASSING & ISOLATING (continued) 3 --- 3 ISOLATING THE ATS Isolating is required before any service work can be performed on the automatic transfer switch (ATS). Refer to Figures 3–9, 3–10, 3–11, and 3–12. 1. Bypass the closed automatic transfer switch contacts. See BYPASSING on pages 3–1 and 3...

Page 13 - Open the lower enclosure door. Pull out both left and; WARNING; Contact Inspection; Deenergize transfer switch

BYPASSING & ISOLATING (continued) 3 --- 4 4. Open the lower enclosure door. Pull out both left and right side rails then use the two tab handles to roll outthe transfer switch. It can be safely inspected in thisposition. The transfer switch can also be removed foreasier maintenance operations. S...

Page 14 - RETURN TO SERVICE; Turn crank; To change the position of transfer switch; NOTE

BYPASSING & ISOLATING (continued) 3 --- 5 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 indica- tor and lights). 1. Use the two tab handles to roll the transfer switch in...

Page 15 - Do not close the isolation contacts unless; When the transfer switch is in the same position as; CONN

BYPASSING & ISOLATING (continued) 3 --- 6 Do not close the isolation contacts unless the Transfer Switch (ATS) and Bypass Switch are in the same position! 6. When the transfer switch is in the same position as the Bypass Switch handle, continue turning theIsolation Handle clockwise (about 8 turn...

Page 16 - You can only bypass to the same source; To Un–Bypass Normal Source*

BYPASSING & ISOLATING (continued) 3 --- 7 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 NOR- MAL or EMERGENCY ) and the Isolation Handle must be in the CONN p...

Page 17 - INDEX

INDEX Printed in U.S.A. Copyright 2007 ASCO Power Technologies, L.P. A auxiliary circuits, 1–2 B barriers, interphase, 3–4, 3–5bypassing the ATS, 3–1, 3–2 C catalog number, 1–1cleaning, 2–1connections power, 1–1 contact inspection, 3–4, 3–5controller disconnecting, 2–1 see Controller User’s Guide D ...

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