Operator’s
7000 Series ACTS
Manual
Automatic Closed–T ransition T ransfer Switches
H–desi g n 600 throug h 1200 amps
TABLE OF CONTENTS
section-page
INSTALLATION 1-1........................
Mounting and Line Connections 1-1.........
Auxiliary Circuits and Harness 1-2...........
Engine Starting Contacts 1-2...............
Functional Test 1-2, 1-3, 1-4, 1-5.............
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......................
INDEX back cover.........................
Note: Refer to the outline and wiring drawings
provided with your 7000 Series ACTS for all
installation and connection details and accessories.
DANGER is used in this manual to warn of high
voltages capable of causin g shock, burns, or death.
!
WARNINGisusedinthismanualtowarn
of possible personal injury.
!
CAUTIONisusedinthismanualtowarn
of possible equipment damage.
Refer t o Group 5 Controller User’s Guide 381333–126
for ATS stat us display messages, time delays, pickup
& dropout settings, and adjustments.
An experienced licensed electrician must install the ACTS.
600---1000 amp. size
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
1200 amp. size
381333–203 C
Rating Label
Each Automatic Closed–Transition Tr ans fer Switch contains
a rating label to define the loads and fault circ uit 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.
H7ACTS B 3 800 N 5 C
Nameplate
The Transfer Switch nameplate includes data for each
specific 7000 Series ACTS. Use the switch only wi thin the
limits shown on this nameplate. A typical Catalog Number
is shown on the next page with its elements explained.
Catalog Number Identification
Typical 7000 Series ACTS catalog no. for switched neutral,
3 pole, 800 amp, 480 V, ATS in Type 1 enclosure:
Neutral
A –solid
B –switched
blank – none
power
connections
ground lug
Phase Poles
2 –singleØ
3 –threeØ
field connections
terminal block TB
Amperes Voltage Controller Enclosure
600
800
1000
1200
C 208
D 220
E 230
F 240
G 277
H 380
J 400
K 415
L 440
M 460
N 480
P 550
Q 575
R 600
5 –standard
5X –if
accessories
ordered
* available 600–1000 amp. sizes only
C –type1
F –type3R
G –type4 *
L –type12 *
blank – open type
Transfer
Control
&lights
Transfer
Switch
ground lug
power
connections
800–1000 amp. sizes in typical enclosure with location of customer connections
Group 5
Controller
power
connections
Transfer
Switch
field connections
terminal block TB
ground lug
Transfer
Control
&lights
Group 5
Controller
power
connections
1200 amp size in typical enclosure with location of customer connections
SECTION 1 INSTALLATION
ASCO 7000 Series Automatic Closed–Transition Transfer Switches (ACTSs) are factory wired and tested. Field
installation requires mounting and connection of service
cables, and auxiliary control circuits (if required).
Remove the Shipping Skid (large ACTSs)
For large ACTSs, open the front door and remove the
four lag screws (2 in front, 2 in rear) securing enclosure to
the wood skid.
Supporting Foundation
The supporting foundation for the enclosure must be
level and straight. Refer to the applicable enclosure
outline drawing included with the switch for allmounting
details including door opening space.
If bottom cable entry is used, the foundation must be
prepared so that the conduit stubs are located correctly.
Refer to the enclosure outline drawing for specified area
and location. Provide cable bending space and clearance
to live metal parts. When a concrete floor is poured, use
interlocking conduit spacer caps or a wood or metal
template to maintain proper conduit alignment.
Mounting
Refer to the applicable enclosure outline drawing furnished with this switch and mount the automatic transfer
switch according to details and instructions shown on
diagram.
Testing Power Conductors
Do not connect the power conductors to the transfer
switch until they are tested. Installing power cables in
conduit, cable troughs and ceiling-suspended hangers
often requires considerable force. The pulling of cables
can damage insulation and stretch or break the conductor’s strands. For this reason, after the cables are pulled
into position, and before
be tested to verify thatthey are not defectiveor have been
damaged during installation.
Protect the automatic transfer switch from
construction grit and metal chips to prevent
malfunction or shortened life of the ATS.
they are connected, they should
!
Connecting Power Conductors
After the power cables have been tested, connect them to
the appropriate terminal lugs on the transfer switch as
shown on the wi ring diagram provided with the switch.
Make sure the lugs provided are suitable for use with the
cables being installed. Standard terminal lugs are solderlessscrewtypeandwillacceptthewiresizeslistedonthe
drawings provided with the switch. Be careful when
stripping insulation from the cables; avoid nicking or
ringing the conductor. Remove surface oxides from
cables by cleaning with a wire brush. When aluminum
cable is used, apply joint compound to conductors.
Tighten cable lugs to the torque specified on rating label.
Controller Ground
Line Connections
Refer to the Wiring Diagram provided with the switch.
All wiring must be made in accordance with the National
Electrical Code and local codes.
It is unnecessary to remove pole covers from the transfer
switch. If you do remove them, reinstall them carefully.
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 generator starting control in the OFF position. Make
sure engine generator is not in operation.
A grounding wire must be connected to the controller’s
lower left mounting stud. Because the controller is
mounted on the enclosure door, a conductive strap must
be used between the enclosure and the door. This
connection provides proper grounding which does not
rely upon the door hinges.
Harnesses
The transfer switch is connected to the left side of the
controller by a plug–in harness (two plugs).
1 --- 1
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