Eaton COOPER POWER SERIES Installation, Operation And Maintenance Instructions Download Page 9

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Operating procedures

Tester operating procedures have been grouped three
functional groups; Control Tests, Flux-Shift Tripper Tests, and
Battery Tests.

Each group of tests is preceded by pre-test setup
instructions which specify any required settings for the
tester and the device under test. Verify these settings
before starting any tests. Upon completion of testing, return
the control settings to the desired operating conditions
before returning the control to service.

ote:

A 5 K ohm resistor is required to complete certain
procedures detailed in this bulletin.

For specific information regarding the operation and
adjustment of Tri-Phase and TPG Controls refer to

Service

Information Bulletin S285-75-1, Tri-Phase, TPG, and TPG

w/SCADA Electronic Control Installation and Operation

Instructions.

WARNING

Hazardous voltage. Always use a hotstick when working
with this equipment. Failure to do so could result in
contact with high voltage, which will cause death or
severe personal injury.

G108A.0

WARNING

This equipment is not intended to protect human
life. Follow all locally approved procedures and safety
practices when installing or operating this equipment.
Failure to comply can result in death, severe personal
injury, and equipment damage.

G102.1

CAUTION

Equipment misoperation. This device must be operated
in dry environments only. So not operate itw in rain,
snow, or sleet. Failure to comply can result in equipment
misoperation and possible personal injury.

G141.0

Testing in-service VFI units

The following procedures must be followed if an
in-service VFI padmounted switchgear unit is to be tested
with the VFI tester apparatus.

Side-hinged units with TPG controls

1. Open

the

VFI

Switches

2. Attach the power cable to the VFI tester and plug it into

a grounded, three-prong 120 VAC outlet.

IMPORTANT

This device must be connected to a properly grounded,
3-wire 120 VAC power source to ensure safe and reliable
operation. Do not operate it using a “floating” power source
such as a portable generator.

3. Connect the 14-pin female/14-pin male interrupter

interface cable (Item 1) to the VFI tester at the
interrupter port. Refer to Figure 4 for steps 3 through 8.

4. Connect the 19-pin male/14-pin female control interface

cable (Item 2) to the VFI tester at the Control port.

5. Break the connection between the control and VFI unit

by disconnecting the VFI control cable (Item 3) from
the male receptacle located on the outside of the TPG
control enclosure.

WARNING

Hazardous voltage. Open the switch associated with the
control before attempting to disconnect its control cable.
Failure to do so can result in contact with high voltage
pulse (300 V peak) from the CT protection circuit, which
can cause death or severe personal injury.

T287.0

6. Connect the 14-pin male connector end of the tester

interrupter interface cable (Item 1) to the 14-pin female
end of the padmount cable (Item 3) originating from the
front plate of the VFI unit under test.

Connect the 14-pin female connector end of the VFI
tester control interface cable (Item 2) to the male
receptacle of the TPG control enclosure.

8. Proceed with the testing procedures as detailed in this

service bulletin.

To return the unit under test to service:

Verify that the VFI Switches under test are in the open
position.

2. Turn off the VFI tester.

INPUT

POWER

120 VAC

TEST

CONTROL

RESET