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381333–136 C
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
telephone 519 758–8450, fax 519 758–0876, for service call 1 888 234–2726 (ASCO) www.asco.ca
Operator’s
Manual
7000 Seri es 7AC T B
Automatic Closed–Transition Transfer
& Bypass–Isolation Switches
G design 1000 through 3000 amp. sizes
DANGER is u sed in this m anual to warn of high
voltages capable of causing shock, burns, or death .
WARNINGisusedinthismanualtowarn
of possible personal injury.
CAUTIONisusedinthismanualtowarn
of possible equipment damage.
TABLE OF CONTENTS
section-page
INSTALLATION
Mounting 1-1.............................
Power Connections 1-2....................
Engine Starting & Auxiliary Circuits 1-2......
Functional Test 1-3, 1-4.....................
TESTING & SERVICE
Transfer Test & Preventive Maintenance 2-1..
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.........................
Refer to the outline and wiring drawings provided
with your 7000 Series ACTB 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 experienced licensed electrician must install the
7ACTB.
Rating Label
Each 7000 Series 7A CTB contains a rating label to
def in e t h e lo ad and fau lt circ u it wit h stan d /c lo sin g
ratings. Refer to the label on the Transfer Switch for
spec ific 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
specific 7000 Series 7ACTB 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 ACTB catalog no. for overlapping
neutral, 3 pole, 1200 amp., 480 V, in Type 1 enclosure:
G7ACTB C 3 1200 N 5 C
Phase Poles
Neutral
A –solid
Amperes Voltage Controller Enclosure
B – switching
5X –if
accessories
ordered
5 –standard
G –type4
C –type1
F –type3R
L –type12
3 –threeØ
2 –singleØ
B 120
D 220
A 115
C 208
E 230
K 415
M 460
J 400
L 440
N 480
G 277
F 240
H 380
Q 575
P 550
R 600
1200
2000
1000
1600
blank – none
blank – open type
C – overlapping
3000