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
INSTALLATION (continued)
The Functional Test consists of three checks:
Functional Test
❐ 1 — Manual Operation Test, pages 1–3 through 1–6
❐ 2—VoltageChecks,page1–7
❐ 3 — Electrical Operation, page 1–8
Do these checks in the order presented
to avoid damaging the ATS.
Read all instructions on the Wiring Diagram and labels
affixed to the ATS. Note the control features that are
provided and review their operation before proceeding.
Continue to 1–ManualOperationTest starting below.
1 – Manual Operation Test
A detachable operator handle is provided on the transfer
switch for maintenance purpos es only.Manualoperation
of the transfer switch must be checked before it is
operated electrically.
Do not manually operate the transfer switch
until both power sources are disconnected:
open both circuit breakers.
Emergency contacts
(upper shaft)
window indicators
O is open
C is closed
contact
position
indicators
(right side)
Normal contacts
(lower shaft)
Figure 1-3. Contact position indicators on
150–600 amp. J–design tra nsfer switches .
Shown with Emergency open and Normal closed.
Emergency contacts
(upper shaft)
window indicators
O is open
C is closed
contact
position
indicators
(right side)
Normal contacts
(lower shaft)
1. Se lect the appropriate switch design / amp. size and
follow directions for installing and using the handle:
150–1200 amp J, H–designs Fig. 1-3, -4, -6 thru -11.
Attach the manual handle onto the shaft hub, left
side of the operator.
1600 – 3000 amp. G–design See Figures 1-5, 1-12.
Install the hub (with pin
manualfirmlyintothesideholeinthehub. Pushin
or pull out hub to engage opposite source contacts.
4000 amp. F–design SeeFigure1-13.
Insert the manual handle into the hole in the weight.
2. Move the handle as shown to manually operate the
Transfer Switch. The switch should operate smoothly without binding. If it does not, check for shipping
damage or construction debris. Repeat the manual
operation check on the other Transfer Switch.
3. Return the transfer switch to the N (closed on normal)
position. If removable, remove the maintenance
handle and store it on the transfer switch in the place
provided.
) onto the shaft and insert the
Figure 1-4. Contact position indicators on
800–1200 amp. H–design transfer switches .
Shown with Emergency open and Normal closed.
Emergency
contacts
window
indicators
OPEN or
CLOSED
contact
position
indicators
(left side)
Normal
contacts
Figure 1-5. Contact position indicators on
1600–3000 amp. G–design tra nsfer switches .
Shown with Emergency closed and Normal open.
1 --- 3
INSTALLATION (continued)
J–design 150–600 amp
left side of
transfer switch
maintenance
handle
Emergency source
contact shaft hub
clip
Normal source
contact shaft hub
H–design 800–1200 amp
left side of
transfer switch
lobes on weights
prevent both
N&Econtacts
from being
closed at the
same time
Emergency source
contact shaft hub
maintenance
handle
clips
Normal source
contact shaft hub
Figure 1-6. Maintenance handle on 150–600 amp.
J–design transfer switches. Hubs shown with Normal
contacts closed & Emergency open.
UP opens the
handle
Emergency source
contacts
UPPER SHAFT
hub
DOWN closes the
Emergency source
frame
Figure 1-7. Emergency (upper shaft) operation
on 150–600 amp. J–design transfer switches.
contacts
UP closes the
handle
Normal source
contacts
LOWER SHAFT
hub
DOWN opens the
Normal source
frame
contacts
Figure 1-9. Maintenance h andle on 800–1200 amp.
H–design transfer switches. Hubs shown with
Normal contacts closed & Emergency open.
handle
UP opens the
Emergency source
contacts
UPPER SHAFT
hub
DOWN closes the
Emergency source
contacts
frame
Figure 1-10. Emergency (upper shaft) operation
on 800–1200 amp. H–design transfer switches.
handle
UP closes the
Normal source
contacts
hub
LOWER SHAFT
DOWN opens the
Normal source
frame
contacts
Figure 1-8. Normal (lower shaft) operation
on 150–600 amp. J–design transfer switches..
Figure 1-11. Normal (lower shaft) operation
on 800–1200 amp. H–design transfer switches..
1 --- 4
INSTALLATION (continued)
N
l
f
lob
e
lob
Loa
d
E
Do not manually operate the transfer switch
until both power sources are disconnected:
open both circuit breakers.
Table C. Maintenance handle positions on 150–1200 amp. transfer switches. .
Tra n s fer Sw itch
Position
orma
Load
Disconnected
J–design 150--- 600 A
Interlocked Shafts
Link between contact
shafts prevents closing
both N & E contacts
hub
H–design 800 --- 1200 A
1
Interlocked Weights
Lobes prevent
closing both N & E
contacts
weight
hub
2
Maintenance
Handle
up
Shaft Indicators
E=O
E
hub
e
up
contact sha
N
hub
ts
link
upper contacts open
N=C
lower contacts closed
weight
up
E=O
E
N
upper contacts open
N=O
lower contacts open
down
mergency
E
down
N
upper contacts closed
N=O
lower contacts open
down
Note 1: The hub and contact shaft turn in opposite directions through a cam follower mechanism.
Note 2: The hub and contact shaft turn in the same directions.
Note: If Normal and Emergency connections are reversed this operation is also reversed.
E=C
1 --- 5
INSTALLATION (continued)
Insert handle
into hole
(spring fully
compressed)
Emergency
contacts
window
Grasp handle
firmly with
both hands
Slide the hub onto the
shaft and insert the pin
Turn counterclockwise
to OPEN contacts.
Turn clock w ise to
CLOSE contacts.
.
indicators
OPEN or
CLOSED
Normal
contacts
contact position
indicators (left side)
Figure 1-12. Removable maintenance handle and positions on 1600 – 3000 amp. G–design transfer switches.
counterclockwise DOWN
OPENS the contacts
Pull out
source contacts (upper)
Push in
source contacts (lower)
shaft to open Emergency
shaft to open Normal
clockwise DOWN
OPENS the contacts
Pull out
source contacts (upper)
Push in
source contacts (lower)
shaft to close Emergency
shaft to close Normal
weight
hole
maintenance
handle
Figure 1-13. Removable maintenance handle on
4000 amp. F–design transfer switch.
Ve r i fy that the maintenance handle has been
removed and stored properly before proceeding!
Now continue to 2–VoltageCheckson page 1–7.
1 --- 6
observe
these lights
INSTALLATION (continued)
Press for 15 Sec.
Figure 1-14. Standard controls and indicators.
2 --- V o l t a g e C h e c k s
First check the nameplate on the transfer switch; the
rated voltage must be the same as the normal and
emergency line voltages.
Verify that the feeders have been
connected to the proper terminal lugs.
Useextremecautionwhenusingameter
to measure voltages. Do not touch power
terminals; shock, burns, or death could result !
Performsteps 1 through 6 at the right. Observe the status
lights. See Figure 1–14.
● Black circle means light is on.
❍ White circle means light is off.
* If necessary, adjust the voltage regulator on the
generator according to the manufacturer’s recommendations. The automatic transfer switch will respond only to
theratedvoltagespecifiedonthetransferswitch
nameplate.
Note: Refer to Section 3 of the Group 5 Controller
User’s Guide 381333–126 f or how to display the status of
the ATS and the voltage and frequency of each source.
Note: Press the Lamp Test button to verify that all five
lights work.
Now continue to 3 --- Electrical Operation on next page.
Close the normal source (utility)
circuit breaker. Two two left
lights should come on. The
normal source Accepted (upper
1
left) and the Transfer Switch
Position connected to normal
(lower left) lights should be on.
Carefully use an accurate
voltmeter to check the phase to
phase and phase to neutral
2
voltages present at the transfer
switch normal source terminals.
Close the emergency source
(generator) circuit break er.
(Start generator, if necessary.)
Another light should come on.
3
The emergency source
Accepted light (upper right)
should be on.
Carefully use an accurate
voltmeter to check the phase to
phase and phase to neutral
4
voltages present at the transfer
switch emergency source
terminals.*
Carefullyuseaphaserotation
meter to check the phase
rotation of the emergency
5
source; it must be the same
the phase rotation of the normal
source (refer to wiring diagram).
Shut down the generator, if
applicable. The emergency
source Accepted light (upper
right) should go off. Then set
6
the generator’s starting control
switch to automatic.Removeall
meters; close enclosure door.
as
C
B
A
1 --- 7
INSTALLATION (continued)
step 2 step 4
press
these buttons
Press for 15 Sec.
observe
these lights
Figure 1-15. User controls and indicators.
3 --- Electrical Operation
This procedure will check the electrical operation of the
automatic transfer switch. See Figure 1–15.
Be sure to close the enclosure door
before proceeding to prevent personal injury
in case of electrical system fault.
Transfer Test
Both normal and emergency sources must be available
and the emergency source generator (if used) must be
capable of being started in this procedure.
Perform steps 1 through 5 at the right. Observe the status
lights.
● Black circle means light is on.
❍ White circle means light is off.
If the User Controls Locked light is on, the Transfer Test
and Retransfer to Normal buttons will not work until you
unlock them.
How to unlock the User Controls
Press up or down arrow keys on Transfer Control
Center (Group 5 Controller), enter the password, and
press Enter key. The user controls are now unlocked
for 5 minutes. During that time the light will blink.
To lock or unlock the user controls refer to the Group 5
Controller User’s Guide 381333–126. Password information and time delay settings are also provided there.
If this light is on, the buttons will not
work until the controls are unlocked.
If this light is blinking, the user
controls are unlocked for 5 minutes.
The two left lights should be on;
the normal source Accepted
(upper left) and the Transfer
1
Switch Position connected to
normal (lower left) should be on.
Press and hold the Transfer Test
button until the generator starts
and runs (this should happen
2
within 15 sec.). The emergency
source Accepted light (upper
right) should come on.
Then the transfer switch should
operate to emergency.
The Transfer Switch Position
connected to emergency light
(lower right) should come on and
3
the connected to normal light
(lower left) should be off.
IfFeature2Bisused,thetransfer
to emergency will occur after the
time delay.
The transfer switch should
operate back to normal after
Feature3Atimedelay.
Forimmediateretransferpress
the Retransfer to Normal button.
4
The Transfer Switch Position
connected to normal light
(lower left) should come on and
the connected to emergency
(lower right) light should be off.
The generator will stop after
Feature2Etimedelay(unloaded
running engine cooldown).
5
The emergency source Accepted
light (upper right) should go off.
This completes the functional test of the ATS.
1 --- 8
SECTION 2 TESTING & SERVICE
TRANSFER TEST
Operate the 4000 Series ADTS at least once a month by
following the five–step Electrical Operation Transfer
Tes t procedure on page 1–7.
PREVENTIVE MAINTENANCE
Reasonable care in preventive maintenance will insure
high reliability and long life for the 4000 Series ADTS.
An annual preventive maintenance program is recommended.
ASCO Services, Inc. (ASI) is ASCO P ower
Technologies’s national service organi zation. In the
US ASI can be contacted at 1-800-800-2726 for information on preventive maintenance agreements.
Checklist for Yearly Inspection
Hazardous voltage capable of causing shock,
burns, or death is used in this transf er switch.
Deenergize both Normal – Emergency power
sources before performing inspections!
❐ Clean the 4ADTS enclosure. Brush and vacuum
away any excessive dust accumulation. Remove any
moisture with a clean cloth.
DISCONNECTING THE CONTROLLER
The harness disconnect plugs are furnished for repair
purposes only and should not have to be unplugged. If
the controller must be isolated, follow these steps:
Disconnecting the Plugs
Do not unplug the controller
until steps 1a or 1b is co m pleted.
1. Observe the position of the transfer switch.
a. If the transfer switch is in the Normal position, first
place standby engine starting control in the off
position. Second, then open the emergency source
circuit breaker. Third, open the normal source
circuit breaker.
b. If the transfer switchis in the Emergency position,
first open the normal source circuit breaker. Second, place the engine starting control in the test
or run position. Third, open the emergency source
circuit breaker.
2. Separate the two quick disconnect plugs by squeezing the latches. Do not pull o n the harness wires.
Reconnecting the Plugs
❐ Check the transfer switch contacts.Removethe
transfer switch barriers and check contact condition.
Replace the contacts if they become pitted or worn
excessively. Reinstall the barriers carefully.
❐ Maintain transfer switch lubrication.Ifthe
transfer switch is subjected to sev ere dust or
abnormal operating conditions, renew factory
lubrication on all movements and linkages.
Re l u b r ic ate the soleno id operator if the TS coil is
replaced. Do not use oil; order lubrication kit 75-100.
❐ Check all cable connections & retighten them.
REPLACEMENT PARTS
Replacement parts are available in kit form. When ordering parts provide the Serial No., Bill of Mate rial No.
(BOM), and Catalog No. from the transfer switch nameplate. Contact your local ASCO Power Technologies
Sales Office or ASI:
In the United States
call 1 – 800 – 800 – ASCO ( 2726 )
In Canada
call 1 – 888 – 234 – ASCO ( 2726 )
Do not reconnect the controller
until steps 1a or 1b is co m pleted.
1. Observe the position of the transfer switch.
a. If the transfer switch is in the Normal position,
firstbesurethatboth
source circuit breakers are open. Second, be sure
that the standby engine starting control is still in
the off position.
b. If the transfer switch is in the Emergency position,
firstbesurethatboth
source circuit breakers are open.
2. The two harness plugs and sockets are keyed. Carefully align the plugs wi th the sockets and press
straight in until both latches click. Close the door
3. Restore the two sources in sequence as follows:
a. If the transfer switch is in the Normal position,
first close the normal source circuit breaker.
Second, close the emergency source circuit breaker. Third, place the standby engine starting
control in the automatic position.
b. If the transfer switchis in the Emergency position,
first close the emergency source circuit breaker.
Second close the normal source circuit breaker.
normal and emergency
normal and emergency
!
2 --- 1
TESTING & SERVICE
PROBLEM
(continued)
MANUAL LOAD TRANSFER
This procedure will manually transfer the load i f the
controller is disconnected.
Do not manually operate the transfer switch
until both power sources are disconnected
(all conductors deenergized).
1. Deenergize both the normal and emergency source
conductors (remove fuses or open circuit breakers).
TROUBLE-SHOOTING
Note any optional accessories that may be furnished on
the ADTS and review their operation. Refer to any
separatedrawingsand/or instructions that may be packed
with the ADTS.
2. Use the maintenance handle to manually operate the
transfer switch to the opposite source. First open the
closed contacts, then close the other contacts. Do no
try to clos e both Normal and Emergen c y contact
.See
Manual Operation on page 1–3 through 1–6.
3. Then remove
the maintenance handle..
Verify that the maintenance handle
has been removed before proceeding!
4. If the transfer switch is in the Emergency position
manually start the engine generator and then install
emergencysourcefuseorclosethecircuitbreaker.
Hazardous voltage capable of causing shock,
burns, or death is used in this switch.
Do not touch the power or load terminals
of the transfer switch!
t
Table 2-1. Trouble-Shooting Checks.
CHECK IN NUMERICAL SEQUENCE
1OPERATION 2 GEN-SET 3VOLTAGE
Engine–generator set does
not start when the Tra nsfer
Control switch is turned and
held
in Transfer Test position
or when normal source fails.
T ransfer switch does not
transfer the load to the
emergency source after the
engine–generator set starts.
T ransfer switch does not
transfer the load to normal
source when normal returns
or when the Transfer Control
switch is released.
Gen. does not stop after load
retransfer to normal source.
* These are factory settings. Refer t o Group 5 Controller User’s Guide.
If the problem is isolated to circuits on the controller or the transfer switch, call your local ASCO Power Technologies
sales office or ASI: in the United States, call 1–800–800–2726 or in Canada call 1–888–234–2726. Furnish the Serial No.,
Catalog No., and Bill of Material (BOM) No. from the transfer switch nameplate.
Hold Transfer Test switch 15
seconds or the outage must
be long enough to allow for
Feature1Ctimedelayplus
engine cranking and starting.
Wait for Feature 2B time delay
to time out.
Wait for Feature 3A time delay
to time out.
Wait for Feature 2E time delay
to time out.
Starting control must be in the
automatic position. Batteries
must be charged and
connected. Check wiring to
engine starting contacts.
Generator output circuit
breaker must be closed.
Generator frequency must be
at least 95% of nominal (57 Hz
for a 60 Hz system.) *
---
Starting control must be in the
automatic position.
---
Voltmeter should read at least
90% of nominal phase to
phase voltage between
terminals EA and EC (or EL1
and EL2 for 2 pole switches)*
Voltmeter should read at least
90% of nominal phase to
phase voltage between
terminals NB and NC, NC and
NA, and NA and NB (or NL1
and NL2 for 2 pole switches).
---
2 --- 2
INDEX
A
auxiliary circuits, 1–2
C
cable
lugs, 1–2
preparation, 1–2
catalog number, inside cover
cleaning, 2–1
connections
line, 1–1
contact position indicators, 1–3
controller, 1–1
disconnecting, 2–1
see Controller User’s Guide
E
electrical operation, 1–8
emergency source accepted light,
1–7
engine starting contacts, 1–2
F
frequency, generator, 2–2
functional test, 1–3 through 1–8
G
ground, controller, 1–1
H
harness, 1–1
disconnect plugs, 2–1
HELP
customercare@asco.com
800–800–ASCO
I
indicators, contact position, 1–3
inspection, 2–1
installation, 1–1
interlocked weights, 1–6
L
labels,
engine start contacts, 1–2
rating, cover
lights, 1–7, 1–8
Load Disconnected light, 1–8
load disconnected, 1–3
lubrication, 2–1
M
maintenance handle, 1–3 through –6
maintenance, preventive, 2–1
manual load transfer, 2–2
warning, 2–2
manual operation, 1–3, 1–4, 1–5, 1–6
illustration of, 1–3, 1–4, 1–5, 1–6
warning, 1–3
N
nameplate, cover
normal source accepted light, 1–6
O
operation
electrical, 1–7
manual, 1–3, 1–4, 1–5, 1–6
illustration of, 1–3, 1–4, 1–5, 1–6
warning, 1–3
optional accessories
see Controller User’s Guide
R
rating label, cover
replacement parts, 2–1
S
service
in the U.S call 1–800–800–2726
in Canada call 1–888–234–2726
settings
see Controller User’s Guide
shaft indicators, 1–3
T
test, functional, 1–3 through 1–8
time delays, 2–1
see Controller User’s Guide
transfer switch connected to emer-
gency light, 1–8, 2–1
transfer switch connected to normal
light, 1–8, 2–1
transfer switch positions, 1–3
Transfer Test, 1–8
transfer to emergency, 1–8
transfer to normal, 1–8, 2–1
trouble–shooting, 2–2
U
user controls and indicators
Retransfer to Normal, 1–8
Transfer Test, 1–8
V
voltage checks, 1–7
voltage, pickup and dropout settings
see Controller User’s Guide
P
parts, 2–1
phase rotation check, 1–5
problem, 2–2
Printed in U.S.A. ASCO Power Technologies, L.P. 2007
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