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381333–132 F
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
For sales or service call 1 800 800–2726 (ASCO) www.ascopower.com
ASCO POWER TECHNOLOGIES CANADA PO Box 1238, 17 Airport Road, Brantford, Ontario, Canada N3T 5T3
Operator’s
Manual
7000 Seri e s 7ATB
Automatic Transfer &
Bypass–Isolation Switches
G d es ig n 1000 th rou gh 4000 a mp . si zes
DANGER is u sed in this m anual to warn of high
voltages capable o f causi ng shock, burns, or deat h .
WARNINGisusedinthismanualto
warn of possible personal injury.
CAUTIONisusedinthismanualto
warn of possible equipment damage.
4000 amp. size
Refer to the outline and wiring drawings provided
with your 7000 Serie s ATB for all installation and
connection details and accessories.
Refer to Group 5 Controller User’s Guide 381333–126
for ATS status display messages, time delays, pickup
& dropout settings, and adjustments.
An experien c ed licensed electrician must install the
7AT B.
Rating Label
Each 7000 Series 7AT B contains a rating label to
define the loads and fault circuit withstand/closing
ratings. Refer to the label on the Transfer Switch for
spec if ic values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury
or serious equipment damage.
Namepl ate
The Transfer Switch nameplate includes data for each
specifi c 7000 Series ATB. Use the switch only within the
limi ts shown on this nameplate. A typical Catalog
Number is shown below with its elements explained:
TABLE OF CONTENTS
section-page
INSTALLATION
Mounting 1-1.............................
Power Connections 1-2....................
Engine Starting & Auxilia ry Circuits 1-2......
Functional Test 1-3, 1-4.....................
TESTING & SERVICE
Transfer Test 2-1..........................
Preventive Maintenance 2-1................
Disconnecting the Controller 2-1............
Manual Load Transfer 2-2..................
Trouble-Shooting 2-2......................
BYPASSING & ISOLATING
Bypassing the ATS 3-1....................
Isolating the ATS 3-2......................
Return to Service 3-3, 3-4...................
INDEX back cover.........................