ABB BUE 유지 관리 매뉴얼 - 페이지 18

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ABB BUE에 대해서도 마찬가지입니다: 사용자 설명서 (12 페이지)

3.10 Operation test

Operate the motor-drive mechanism, first with manual

operation and then electrically between the limit-positions.

Check the limit-stops by operating the tap-changer to one

of the end-positions. When trying to operate it electrically

beyond the end-position, the motor should not start. Check

the mechanical end-stop by trying to hand crank it beyond

the end-position. After a couple of turns on the hand crank,

it should be mechanically stopped. Hand crank back to the

end-position (where the indicator flag is positioned in the

middle for the BUE, and when the indicator flag shows white

color for the BUL2). Operate the tap-changer electrically to

the other end-position and carry out the same test procedure

as above.

Check the emergency stop by triggering a RAISE or LOWER

impulse and after about one second, press the emergency

stop. The operation should be interrupted. Reset the

emergency stop by turning the knob clockwise and switch

on the protective motor switch. The started operation should

now be completed.

Check the run-through protection with the step-by-step

function disengaged. This is done by first removing the

connection between terminals X4:1 and X4:2 and then

keeping the RAISE/LOWER switch engaged. The motor-

drive mechanism should stop before the fourth operation is

completed. This check must be performed at least five steps

from the end-position. After the test, reset the time relay by

setting the LOCAL/REMOTE switch to 0 and then back. Reset

the protective motor switch to ON. Reconnect the connection

between X4:1 and X4:2.

Check the step-by-step relay by keeping the RAISE/LOWER

switch engaged in RAISE. The tap-changer shall advance only

one step. Repeat the check for LOWER.

Check the function of the position transmitter and other multi-

position switches in all positions.

18 Maintenance guide BUE/BUL2 | 1ZSC000498-ABH en, Rev. 1