Cutler-Hammer ATVISPE31000XSU, Инструкция по эксплуатации

Страница: 35 / 44

I.B. ATS-SD02
Page 29
Effective 5/98
10. Insert the key in the normal switch and turn it clock-
wise to release the lever to the left of the key inter-
lock. This will unlock the normal switch.
11. The normal switch is now back in automatic opera-
tion.
7.3.3 NORMAL TO EMERGENCY BYPASS
The normal switch can be isolated and bypassed by the
following sequence:
1. Move the generator selector switch to the RUN posi-
tion because the load needs to be energized from
the emergency source.
2. Make sure that the emergency source is available.
3. Remove the key from the normal switch by turning
the key counterclockwise while pushing up on the
lever next to the key interlock. This will open the
normal switching device and thus the normal posi-
tion energized light will no longer be illuminated.
The normal switching device is now locked to pre-
vent it from closing.
4. Close the normal bypass switching device manually.
The emergency bypassed light will illuminate.
5. Open and rack out the normal switching device (see
Section 6). The emergency isolated light will illumi-
nate. The emergency position energized light will no
longer be illuminated.
6. Inspect and/or perform maintenance on the
emergency switching device.
7. Rack in the emergency switching device (see
Section 6). The emergency switching device will
automatically recharge and close when it is in the
CONNECT position. The emergency isolated light
will no longer be illuminated, but the EMERGENCY
position energized light will be illuminated.
8. Open the emergency bypass switching device. The
emergency bypassed light will no longer be illumi-
nated.
9. Remove the key from the emergency bypass
switching device by turning the key counterclock-
wise while pushing up on the lever next to the key
interlock. This will lock the emergency bypass
switching device to prevent it from closing.
10. Insert the key in the normal switching device and
turn the key clockwise, which will release the lever
to the left of the key interlock. This will unlock the
normal switching device.
11. The emergency switching device is now back in
automatic operation.
7.3.4 EMERGENCY TO NORMAL BYPASS
The emergency switching device can be bypassed and
isolated by the following sequence:
1. Ensure that normal power is available since the load
will be energized from the normal source.
2. Move the generator selector switch to the OFF posi-
tion to avoid nuisance starting of the generator while
work is being performed on the emergency switch-
ing device.
3. Remove the key from the emergency switching
device by turning the key counterclockwise while
pushing up on the lever next to the key interlock.
This will open the emergency switching device and
thus the emergency position energized light will no
longer be illuminated. The emergency switching
device is now locked, which will prevent it from clos-
ing.
4. Insert the key in the normal bypass switching device
and turn it clockwise to release the lever to the left
of the key interlock. This will unlock the normal
bypass switching device.
5. Close the normal bypass switching device manually.
The normal bypassed light will illuminate.
6. Rack out the emergency switching device (see
Section 6). The emergency isolated light will illumi-
nate.
7. Inspect and/or perform maintenance on the emer-
gency switching device.
8. Rack in the emergency switching device (see
Section 6). The emergency isolated light will no
longer be illuminated.
9. Open the normal bypass switching device. The nor-
mal bypassed light will no longer be illuminated.
10. Remove the key from the normal bypass switching
device by turning the key counterclockwise while
pushing up on the lever next to the key interlock.
This will lock the normal bypass switching device
and prevent it from closing.