Eaton COOPER POWER SERIES Скачать руководство пользователя страница 10

Страница: 10 / 28

3. Disconnect the 14-pin female connector end of the

tester control interface cable (Item 2) from the TPG
control enclosure. Refer to Figure 3 for steps 3 through
8.

4. Disconnect the 14-pin male connector end of the VFI

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

NOTICE

Equipment misoperation. The capacitors upon the Tri-
Phase and TPG boards will retain a charge of 20 Vdc
upon completion of control testing. Apply a 5 k ohm
resister between ground and the P1-7, P1-5, and P1-3
board terminals for 10 seconds prior to returning the
control to service. Failure to comply can result in false
tripping activity by the control upon reinstallation.

T318.0

5. Reconnect the VFI control cable (Item 3) to the

receptacle located upon the TPG control enclosure
housing.

6. Disconnect the interrupter and control interface cables

(Items 1 and 2) from the VFI tester and store the cables
in the storage compartment located in the cover of the
VFI tester.

7. Close

the

VFI

switches.

Top-hinged VFI units with TPG controls/all Tri-
Phase controls

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/18-pin male interrupter

interface cable (Item 1) to the VFI tester at the
interrupter port. Refer to Figure 5 for steps 3 through 8.

4. Connect the 19-pin male/18-pin female control interface

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

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

NOTICE

Equipment damage. Use care while disconnecting and
reconnecting cables to the Tri-Phase/TPG control. Do
not misalign male and female connectors or allow the
full weight of the tester cable to be transferred to the
Tri-Phase/TPG board. Failure to comply can result in
damage to the board header and possible equipment
misoperation.

T319.0

IMPORTANT

Always wear a grounding wrist strap to control static
electricity before handling circuit boards. Attach wrist strap
to ground terminal located upon the front plate of the VFI
unit. Failure to use this strap may result in circuit board
damage.

5. Break the connection between the control and VFI unit

by carefully disconnecting the internal VFI control wiring
harness (Item 3) at the control.

6. Connect the 18-pin male connector end of the VFI

tester interrupter interface cable (Item 1) to the 18-pin
female end of the VFI control wire harness (Item 3).

Connect the 18-pin female connector end of the tester
control interface cable (Item 2) to the 18-pin male
header of the Tri-Phase/TPG board.

8. Proceed with the testing procedures as detailed within

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.

3. Disconnect the 18-pin female connector end of the

tester control interface cable (Item 2) from the 18-pin
male header of the Tri-Phase/TPG board. Refer to
Figure 5 for steps 3 through 7.