GE Industrial Solutions PowerVac PV-VL 13.8-1000-0 and -1 - Manual (Page 63)

GEH 6468A - Power/Vac VL Breaker Page 63
GROUND CONNECTION A ground connec-
tion is made between the breaker ground shoe and
the main generator accessory compartment ground
bus.
DOOR ALIGNMENT After checking that the unit
is level and plumb, check each breaker
compartment door. The top of each door should be
level with the adjacent doors; the sides of each
door plumb; the surface of each door flush with the
adjacent door; and, the space between adjacent
doors equalized to permit their free swing and
present a neat appearance. The door stops should
be adjusted to permit a door swing of
approximately 105 degrees.
If it is necessary to align the doors of the breaker
compartment, the following procedure should be
followed.
1. Doors may be raised or lowered vertically, or
moved forward or backward horizontally, by
loosening the hinge mounting nuts on the left side
sheet and shifting the hinge and door assembly as
allowed by the slotted holes in the hinge.
2. Doors may be shifted to the right or left by
adding or removing washers or shims from
between the hinge and side sheet.
3. Doors may be plumbed by slightly bending the
appropriate hinges. To do this, open the door and
insert a drift pin in either of the two holes in the
hinge. Pulling forward on the drift pin will move the
door to the right, and pushing back will move the
door to the left. Adjust each hinge individually as
required to plumb the door.
20.3. TESTING AND INSPECTION
GENERAL Although the equipment and
devices have been completely tested at the
factory, a final field test should be made to be sure
that the equipment has been properly installed and
that all connections are correct and have not
become loose in transportation.
WARNING: THE PRIMARY EQUIPMENT
SHOULD BE COMPLETELY DE-ENERGIZED
WHILE THE TESTS ARE IN PROGRESS.
BREAKER TESTING The operation of the
breaker with its associated devices may be tested
outside the unit by use of the test coupler.
HI-POTENTIAL TESTING Hi-potential tests
to check the integrity of the insulation are not
necessary if the insulation instructions in this book
are carefully followed. Should the purchaser desire
to make hi-potential tests, the test voltage should
not exceed 27kV AC. This voltage is 75% of
factory test voltage and is in accordance with ANSI
standards.
BREAKER POSITIONING Before proceeding
to place the breaker in the operating position, the
following steps must be taken. The elevating
mechanism is accurately leveled and checked at
the factory and should need no adjustment.
WARNING: DO NOT INSTALL OR REMOVE
THE BREAKER OR MAKE ADJUSTMENTS
UNLESS THE BREAKER IS OPEN.
1. Rub a small amount of 0282A2048P009 lub-
ricant on the silvered portion of the breaker studs,
ground shoe, and 16 secondary coupler pins, to
form a thin coating for contact purposes.
2. Lower the elevating mechanism lifting brackets
until the lifting brackets are in the fully lowered
position. The breaker should then enter the
housing freely. After first assuring that the breaker
is in the open position, push the breaker into the
unit until it rests against the rear of the front lifting
saddle of the elevating mechanism.
3. The clearance between the interference block
on the breaker and the interference block on the
interlock mechanism should be from .063" to .125".
WARNING: AGAIN, BEFORE PROCEEDING
WITH THIS CHECK, IT IS NECESSARY THAT
THE PRIMARY CIRCUITS BE DE-ENERGIZED.
4. To elevate the breaker, operate the elevating
control selector switch on the elevating motor to
"RAISE". A clutch handle under the elevating
motor is then pulled forward until a motor limit
switch engages to raise the breaker into the unit.
Carefully raise the breaker and while elevating,
note that the shutter slides open and the breaker
studs center with respect to the openings in the
stationary disconnecting devices or damage to the
contacts may result.