TP-6835 9/17 45Section 5 Functional Tests and Setup
Section 5 Functional Tests and Setup
5.1 Introduction
Be sure to perform all of the functional tests described in
this section before putting the transfer switch into
operation.
The functional tests include the following checks:
D Manual Operation Test
D Voltage Checks
D Lamp Test
D Automatic Operation Test
Note: Perform these checks in the order presented to
avoid damaging the ATS.
Read all instructions on the labels affixed to the
automatic transfer switch before proceeding.
To complete the installation, follow the instructions in
this section to:
D Set the time, date, and exercise schedule on the
controller.
D Perform the system startup procedures listed o n the
startup form.
D Register the unit using the Kohlerr online Warranty
Processing System.
5.2 Manual Operation Test
If you have not already done so, test the contactor
manual operation before proceeding to the voltage
check and electrical operation test.
Note: Disable the generator set and disconnect the
power by opening the circuit breakers or switches
for both sources before manually operating the
transfer switch.
Manual operation instructions are given in Section 7.
See the Table of Contents to locate the manual
operation instructions for your unit.
A contactor in normal and serviceable condition
transfers smoothly without binding when operated
manually. Do not place the transfer switch into service if
the contactor does not operate smoothly without
binding; contact an authorized distributor/dealer to
service the contactor.
5.3 Voltage Check
The voltage, frequency, and phasing of the transfer
switch and the power sources must be the same to avoid
damage to loads and the transfer switch. Compare the
voltage and frequency ratings of the utility source,
transfer switch, and generator set, and verify that the
ratings are all the same.
Use the voltage check procedure explained in this
section to verify that the voltages and phasing of all
power sources are compatible with the transfer switch
before connecting the power switching device and
controller wire harnesses together.
Follow the instructions provided with the generator set
to prepare the generator set for operation.
Verify the following before proceeding with the
functional tests:
D The bypass handle is in the NORMAL position.
D The isolation handle is in the CONN position.
D The transfer switch Normal contacts are closed.
D The transfer switch Emergency contacts are open.
If the handles are not in the correct positions, follow the
instructions for bypassing and isolating the switch. See
the Table of Contents. Do not force the handles.
Electrical interlocks prevent a wrong sequence of
operation.
Read and understand all instructions on installation
drawings and labels on the switch. Note any optional
accessories that have been furnished with the switch
and review their operation.
Note: Source N is the source connected to the normal
side of the contactor. Source E is the source
connected to the emergency side of the
contactor. Verify that the source leads are
connected to the correct lugs before proceeding.
The voltage check procedure requires the following
equipment:
D A digital voltmeter (DVM) with electrically insulated
probes capable of measuring the rated voltage and
frequency
D A phase rotation meter
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