GE Industrial Solutions Limitamp AR - Manual (Page 3)

Introduction
GE’s Limitamp ® AR is the solution for applications where an
extra margin of protection is essential. It meets the IEEE
C37.20.7 Type 2B and IEC 62271-200, TYPE-A standards and is
available in one- and two-high versions of FVNR motor
starters, rated for 2.4-7.2kV-400A, 5kV-800A.
This instruction book is to be used in conjunction with GEH-
6263 (Two high vacuum equipment), GEH-5306 (vacuum
contactor) and GEH 5396B (800A) instructions.
WARNING: Before any adjustments, servicing, parts
replacement or any other act is performed requiring
physical contact with the electrical working components
or wiring of this equipment, all power must be removed
and locked off from all sources and all attached rotating
equipment must have come to a complete stop. User
personnel must be completely familiar with the following
operating and maintenance instructions before attempting
to service this equipment.
WARNING: The vacuum interrupter integrity test should be
performed before the high voltage vacuum contactors are
energized for the first time and each time the contactors
are returned to service after maintenance, adjustment or
repair. Failure to perform this test may result in serious
injury or death.
CAUTION: Product is not intended for nuclear use.
Opening High-Voltage Door
The high-voltage doors on the CR194 Two-High Vacuum
Limitamp AR are mechanically interlocked to prevent the
opening of the doors, when equipment is energized. For
safe opening of high-voltage door, follow the step-by-step
procedure as mentioned below.
Step 1: Push in the handle latch release and rotate the
isolation switch handle to the full “OFF” position. The latch
release must pop back out. See figure 3.
Step 2: Rotate the handle (Black color handle) down with a
rapid positive motion, to bring it to “OFF” Position.
Step 3: Rotate the high-voltage door latch handle (silver color)
90° in the counter-clockwise direction to disengage the multi
latches on the inside of the door.
Step 4: Turn all flange nuts simultaneously until disengaged
from hat brackets.
Step 5: The high-voltage door may then be opened by pulling
out on the latch handle.
Figure 3. Push in
the handle latch
WARNING: Confirm that equipment is de-energized before
opening the high-voltage doors.
CR 194 One/Two-High Vacuum Limitamp ® AR Control Page 3
Figure 1. 36”
wide Two-High
AR FVNR starter
with low-voltage
doors open.
Figure 2. 36”
wide Two-High
AR FVNR starter
with high-voltage
doors open.