50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL
99
60 Hz: G655 - G750 - G800 - G850XW/XF
•
Do not leave the ACB body on the draw-out rail pulled
out.
4. Make sure the breaker fixing bolts (Fig. 29 (2) ), if
fitted, are loosened and not arrest the breaker body.
5. Make sure the hand connector (Fig. 29 (15) ) of the
communication terminal block, if fitted, is so
positioned that it does not get caught between the
breaker body and the draw-out cradle.
6. If the ACB has the breaker fixing bolts (Fig. 29 (2) ),
make sure the bolts are loosened and, holding both
the grips (Fig. 29 (10) ), firmly push the breaker body
into the draw-out cradle.
•
If the ACB is equipped with the communication
terminal block, plug the hand connector (Fig. 29 (15)
) into the communication terminal block while pushing
the breaker body. Into the draw-out cradle. Make sure
the hand connector and control wire of the ACB are
not snagged when pushing the breaker body into the
draw-out cradle.
7. Push the rail stoppers (Fig. 29 (8) ) outward on both
sides of the draw-out cradle (Fig. 29 (12) ) to unlock
the draw-out rail, and then push the rail ends to insert
the rail until it stops. The draw-out rail will be locked
again by the stoppers.
Moving the breaker body from the ISOLATED
position to the TEST position
1. Make sure the ON-OFF indicator (Fig. 29 (13) ) shows
“OFF”. (If the ACB remains closed, the draw-out
handle (Fig. 29 (1) ) cannot be inserted).
2. Unlock the position lock lever (Fig. 29 (14) ) if locked.
3. Insert the draw-out handle into the draw-out handle
insertion hole (Fig. 29 (4) ). And slowly turn clockwise
until the handle cannot be turned. The position
indicator (Fig. 29 (5) ) shows “TEST”.
•
The ACB cannot be closed as long as the draw-out
handle is in the draw-out handle insertion hole. To
close the ACB e.g., for ON-OFF testing, remove the
draw-out handle.
Moving the breaker body from the TEST position to
the CONN. position
1. Open the ACB. (If the ACB remains closed, the draw-
out handle (Fig. 29 (1) ) cannot be inserted).
2. Unlock the position lock lever (Fig. 29 (14) ) if locked.
3. Press the release button (Fig. 29 (6) ). The release
button will be locked depressed.
4. Insert the draw-out handle into the draw-out handle
insertion hole (Fig. 29 (4) ). And turn clockwise until
the handle cannot be turned with its max. operating
torque (14.7 N-m).
The position indicator (Fig. 29 (5) ) shows “CONN.”
Turning the draw-out handle will unlock the release
button.
•
When the main contact starts engaging, the force
required to turn the handle will increase as shown in
Fig. 31. This symptom does not mean a malfunction.
Continue to turn the handle. Rotating the handle more
13 or 14 turns moves the breaker body to the CONN.
position, where the handle cannot be turned with its
max. operating torque.
5. Remove the draw-out handle.
6. Tighten the breaker fixing bolts (Fig. 29 (2) ), if used,
to lock the breaker body.
Breaker body
Breaker body
rollers
Fig. 30 Placing the breaker body on the draw-out rail
Draw-out cradle
Draw-out rail
Fig. 31 Handle operating torque
13 or 14 turns
Position
TEST
CONN.
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