381333–133 A
50 Hanover Road, Florham Park, New Jersey 07932–1591 USA
1 800 937–2726 (ASCO), for service call 1 800 800–2726 (ASCO) www.asco.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 Series ATB
Automatic Transfer &
Bypass–Isolation Switches
F–design, 3000 and 4000 amp. sizes
TABLE OF CONTENTS
section-page
INSTALLATION
1-1
. . . . . . . . . . . . . . . . . . . . . . . .
Mounting
1-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Connections
1-2
. . . . . . . . . . . . . . . . . . . .
Engine Starting & Auxiliary Circuits
1-2
. . . . . .
Functional Test
1-5, 1-6, 1–7
. . . . . . . . . . . . . . . .
TESTING & SERVICE
2-1
. . . . . . . . . . . . . . . . . .
Transfer Test
2-1
. . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance
2-1
. . . . . . . . . . . . . . . .
Disconnecting the Controller
2-1
. . . . . . . . . . . .
Manual Load Transfer
2-2
. . . . . . . . . . . . . . . . . .
Trouble-Shooting
2-2
. . . . . . . . . . . . . . . . . . . . . .
BYPASSING & ISOLATING
3-1
. . . . . . . . . . . . . .
Bypassing the ATS
3-1
. . . . . . . . . . . . . . . . . . . .
Isolating the ATS
3-1
. . . . . . . . . . . . . . . . . . . . . .
Return to Service
3-3
. . . . . . . . . . . . . . . . . . . . . .
INDEX
back cover
. . . . . . . . . . . . . . . . . . . . . . . . .
An experienced licensed electrician must install ATB
Refer to the outline and wiring drawings provided
with your 7000 Series 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.
Rating Label
Each 7000 Series ATB contains a rating label to define the
loads and fault circuit withstand/closing ratings. Refer to the
label on the Transfer Switch for specific values.
Do not exceed the values on the rating label.
Exceeding the rating can cause personal injury
or serious equipment damage.
!
Nameplate
The Transfer Switch nameplate includes data for each
specific 7000 Series ATB. 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 ATB catalog no. for overlapping neutral, 3 pole, 4000 amp, 480 V, in Type 1 enclosure:
7ATB
C
3
4000
N
5
C
Phase Poles
Neutral
A
– solid
Amperes
Voltage
Controller
Enclosure
5X
– if accesso-
ries ordered
5
– standard
G
– type 4
C
– type 1
F
– type 3R
L
– type 12
3
– three Ø
2
– single Ø
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
4000
3000
blank --- none
blank – open type
C
– overlapping
