Emerson ADTS User Manual
Operator’s
4000 Series ADTS
Manual
Automatic Delayed–T ransition T ransfer Switches
J–design 150–600A, H–design 800–1200A,
G–design 1600–3000A, F–design 4000A
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 to the outline and wiring drawings provided
with your 4000 Series ADTS for all installation and
connection details and accessories.
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.
Rating Label
Each automatic closed–transition transfer switch 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 4000 Series ADTS. Use the switch only within the
limits shown on this nameplate. A typical Catalog Number
is shown on the next page with its elements explained.
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 1-3 through 1-8..............
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.........................
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
381333–272 B
design
prefix
letter
Catalog Number Identification
Typical 4000 Series catalog no. for J–design, 2 pole, 260 amp, 240 V, ADTS in Type 1 enclosure:
J
4ADTS A 2 260 F 5 C
Neutral
A –solid
B –switched
C – overlapping
blank – none
field connections
terminal block TB
power
connections
Phase Poles
2 –singleØ
3 –threeØ
Amperes Voltage Controller Enclosure
150
260
400
600
800
1000
1200
1600
2000
2600
3000
4000
A 115
B 120
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
C –type1
F –type3R
G –type4
H –type4X
L –type12
blank – open type
transfer
control
&lights
Transfer
Switch
power
connections
J–design 260 ampere size in typical enclosure with location of customer connections
Group 5
Controller
SECTION 1 INSTALLATION
ASCO 4000 Series Automatic Delayed–Transition Transfer Switches a re factory wired and tested. Field installation simply requires mounting and connection of service
cables, and auxiliary control circuits (if required).
should be tested to verify that they are not defective or
have been damaged during installation.
Connecting Power Conductors
Remove the Shipping Skid
For large switches, 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 level
and straight. Refer to the applicable enclosure outline
drawing included with the 4ADTS for all mounting
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 outline and mounting diagram provided with
the ATS; it shows all mounting details and instructions.
Protect the switch from construction grit
and metal chips to prevent malfunction or
shortened life of the automatic switch switch.
Mount the ATS vertically to a rigid supporting structure.
Level all mounting points byusing flat washers behind the
holes to avoid distortion of the switch.
The controller is mounted on the cabinet door. An addon DIN rail is provided for some opti onal accessories and
is mounted below controller on the door.
A Wiring Diagramis furnished with the ASCO4000 Series
4ADTS (separate from this manual). Refer to this
drawing. Allwiring must be made in accordance with the
National Electrical Code and local codes.
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.
Do not run cablesin front of orbehind the switch. Cables
can be bundled on the right side of the switch. Maintain
proper electrical clearance between the live metal parts
and grounded metal: ½ inch minimum for 150-400 amps,
1 inch minimum over 400 amps.
It is not necessary to remove the barriers from the
transfer switches to install the cables. If you do remove
them,however, be sure to reinstall the barriers carefully.
Bus Connections
Forlarge switches use grade 5 hardware to connect bus to
appropriate terminal plates. Wipe off the bus surfaces
before they are joined. If the bus is very dirty, gently clean
the surfaces with a non--- flammable solvent. Avoid
touching the cleaned surfaces.
Tighten bolted joints to the torque specified in Table A.
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.
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 i nsulation and stretch or break the
conductor’s strands. For this reason, after the cables are
pulled into position, and before they are connected, they
1 --- 1
The reliability of the connection depends
on how clean and how tight the joint is.
Table A . Tightening torque values for bolted j oints
(Grade 5 hardware)
Bolt Diameter
in inches
1/4 7
5/16 12
3/8 20
1/2 50
5/8 95
3/4 155
Tightening Torque
in foot pounds
INSTALLATION (continued)
Controller Ground
A grounding wire must be connected to the controller’s
lower left mounting stud. Because the controller i s
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
control panel by a plug-in harness (two plugs).
Auxiliary Circuits
Connect auxiliary circuit wires to appropriate terminals
on the transfer switch. Note the control features that are
furnished on this switch. Make the necessary auxiliary
connections by referring to the Wiring Diagram.
Engine Starting
Signals
5amps,32VDC
5ampsresistive28VDC
or 120 V AC max.
FEATURE 7
closes to start
FEATURE 8
TS Auxiliary Contacts
Feature 14A & 14B
10 amps, 32 V DC
10 amps 250 V AC
general purpose
opens to start
TB Terminal Block
(field connections)
accepts wire range
22–12 AWG
Engine Starting Contacts
The engine control contact connections (if used) are
located on the transfer switch. Connect signal wires to
appropriate terminals as specified in Table B and shown
in Figures 1–1 and 1–2. See the wiring diagram too.
Table B. Engine start connections
When normal
source fails
contact closes TB1 and TB2
contact opens TB1 and TB3
left side of transfer switch
COMMON
FEATURE 7
closes to start
FEATURE 8
opens to start
COMMON
FEATURE 14B
closed o n emergency
FEATURE 14A
closed on normal
Engine Starting
Signals
5amps,32VDC
5ampsresistive28VDC
or 120 V AC max.
TS Auxiliary Contacts
Feature 14A & 14B
10 amps, 32 V DC
10 amps 250 V AC
general p urpose
Te r mi na ls on
transfer switch
Figure 1-2. Connections to engine starting contact
terminal block located on 1600 through 3000 amp.
G–design transfer switches.
COMMON
FEATURE 14BA
closed o n emergency
FEATURE 14AA
closed on normal
Optional
TS Auxiliary Contacts
Feature 14AA & 14BA
10 amps, 32 V DC
10 amps 250 V AC
general purpose
Figure 1-1. Connections to engine starting contact
terminal block for 150 through 1200 amp.
J & H–design transfer switches.
1 --- 2
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