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Installation Manual
Installation Manual
!
DANGER
DANGER is used in this manual to warn of a
hazard situation which, if not avoided, will result in
death or serious injury.
!
WARNING
WARNING is used in this manual to warn of a
hazardous situation which, if not avoided, could
result death or serious injury.
!
CAUTION
CAUTION is used in this manual to warn of a
hazardous situation which, if not avoided, could
result in minor or moderate injury.
Refer to the outline and wiring drawings provided
with the 3ATS, 3NTS, 3ADTS, or 3NDTS for all
installation and connection details and accessories.
Refer to User's Guide 381333-400 for the Goup G
Controller status display messages, time delays,
pickup and dropout settings, and adjustments.
Rating Label
Each 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.
!
WARNING
Do not exceed the values on the rating label.
Exceeding the rating can cause person injury or
serious equipment damage.
An experienced licensed electrician must install the transfer
switch.
Installation
These transfer switches are factory wired and tested.
Installation requires mounting, connecting service cables, and
connecting engine start and auxiliary control circuits (if
required.).
381333-406
3ATS, 3ADTS, 3NTS, 3NDTS
G-design 1600-3000 A Transfer Switches
Mounting ..........................................................1
Power Connections .........................................2
Engine Starting Contacts.................................2
1- Manual Operation........................................3
2- Voltage Checks ...........................................4
3- Electrical Operation .....................................6
Transfer Test ...................................................6
Preventive Maintenance ..................................6
Manual Load Transfer .....................................6
TROUBLESHOOTING ....................................7
INDEX..............................................................8
The supporting foundation for the enclosure must be level and
straight. Refer to the applicable enclosure outline drawing
included with the transfer switch 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 1 inch minimum 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.
Refer to the outline and mounting diagram and mount the
transfer switch according to details and instructions shown on
the diagram. Mount it vertically to a rigid supporting
structure. Level all mounting points by using flat washers
behind the holes to avoid distortion of the transfer switch.
Protect the transfer switch from construction grit
and metal chips to prevent malfunction or
shortened life of the transfer switch.
ASCO Power Technologies
ASCO 3ATS, 3ADTS, 3NTS, 3NDTS
Table of Contents
Supporting Foundation
Mounting
NOTICE
381333-406
Page 1
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Summary of Contents for Emerson ASCO 3ATS
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Page 1: Table Of Contents
Installation Manual ASCO 3ATS, 3ADTS, 3NTS, 3NDTS 3ATS, 3ADTS, 3NTS, 3NDTS Installation Manual G-design 1600-3000 A Transfer Switches DANGER Table of Contents DANGER is used in this manual to warn of a INSTALLATION hazard situation which, if not avoided, will result in Mounting ............1... -
Page 2: Power Connections
ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Installation Manual Engine Starting Contacts Line Connections Refer to the wiring diagram provided with the transfer switch. The engine control contact connections (if used) are located on All wiring must be made in accordance with the National the transfer switch for 3ATS &... -
Page 3: Functional Test
Installation Manual ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Functional Test maintenance The functional test consists of three checks: manual operation, voltage checks, and electrical operation. NOTICE Do these checks in the order presented to avoid damaging the transfer switch. 1 – Manual Operation A maintenance handle is provided on the transfer switch for maintenance purposes only. -
Page 4: 2- Voltage Checks
ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Installation Manual Close the normal source circuit breaker. The normal source accepted and the load on normal lights should come on. Use an accurate voltmeter to check phase to phase and phase to neutral voltages present at the transfer switch normal source terminals. - Page 5 Installation Manual ASCO 3ATS, 3ADTS, 3NTS, 3NDTS The normal source must be available and the generator must be ready to start. Check that the normal source accepted light is on. For 3ATS & 3ADTS press the transfer button. The engine should start and run within 15 seconds.
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Page 6: 3- Electrical Operation
ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Installation Manual Testing & Service Replacement Parts When ordering replacement parts provide the Serial No., Bill Transfer Test of Material No. (BOM), and Catalog No. from the transfer Operate the transfer switch at least once a month by following switch nameplate. -
Page 7: Troubleshooting
Installation Manual ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Troubleshooting Check in Numerical Sequence Problem 1 Operation 2 Generator 3 Voltage Starting control must be The outage must be long For 3ATS & 3ADTS the engine- in automatic position. enough to allow for the... -
Page 8: Index
ASCO 3ATS, 3ADTS, 3NTS, 3NDTS Installation Manual INDEX alert light, 7 inphase transfer feature, 5, 7 source acceptable lights, 4, 5 see User’s Guide 381333-400 inspection, 6 starting contacts, 3 ASI is ASCO Services Inc. installation, 2 starting control, 7...