Removal Procedure; Manual Operational Check; Vacuum Integrity Test; Low Frequency Withstand Test - Eaton FP-25-LV-VSR Instruction Book

FP-25-LV-VSR
Breaker-To-Motor Starter Conversion

5.5 REMOVAL PROCEDURE

 DANGER
THE LV-VSR MUST BE IN OPEN POSITION PRIOR THE REMOVAL
PROCEDURE. FAILURE TO DO SO MAY CAUSE SEVERE INJURY, DEATH,
OR EQUIPMENT DAMAGE.
1. Either remotely or locally open the LV-VSR prior to
attempting to remove it from the cell.
2. Lift up the crank shutter, and insert the crank, turn the crank
counter-clockwise until the position indicator on the starter
shows "DISCONNECT" position.
3. Keep turning the crank counter-clockwise until it reaches the
stopped position.
4. Remove the racking crank; the shutter will automatically be
returned.
5. Open the cell door and pull the LV-VSR forward until the cell
tracks are in the fully extended and latched position. The
LV-VSR is now ready to be removed from the switchgear
area.

5.6 MANUAL OPERATIONAL CHECK

Manual operational checks must be performed before the LV-VSR is
connected to a live circuit. The checks can be performed either with
the LV-VSR in TEST position in the cell or outside of the cell, as long
as secondary power is available.

5.7 VACUUM INTEGRITY TEST

Check the vacuum integrity of the interrupters of the three vacuum
bottles by conducting the applied potential test described in Section
6.

5.8 LOW FREQUENCY WITHSTAND TEST

Perform insulation integrity tests as described in Section 6.

5.9 CONTACT INSPECTION

Check all three vacuum interrupter erosion indicator marks as
described in Section 6.

5.10 ELECTRICAL OPERATIONAL CHECKS

 WARNING
DO NOT PERFORM ELECTRICAL OPERATION CHECKS WITH THE LV-VSR
IN THE "CONNECT" POSITION BECAUSE OF THE POSSIBILITY OF
CONNECTING DE-ENERGIZED LOAD CIRCUITS TO THE ELECTRICAL POWER
SOURCE, RESULTING IN DEATH, PERSONNEL INJURY OR EQUIPMENT
DAMAGE
The LV-VSR can only be operated electrically when the following
condition are met:
1. Control power is present, either by having the LV-VSR in
the TEST position in the cell or by a test cabinet connected
to the LV-VSR.
2. The overload relay reset if tripped.
3. The current limiting fuses are not blown.
Having met these conditions, the LV-VSR may be electrically
operated. Either depressing the CLOSE pushbutton on the unit or
sending the close signal remotely to close the LV-VSR.
To open the LV-VSR, send a remote open signal, press the open
pushbutton, or press the test button on the overload relay.
Perform several close/open operations to ensure reliable and
constant electrical operation.
18 Instruction Book IB019008EN October 2016 www.eaton.com
 WARNING
DO NOT ATTEMPT TO INSTALL OR OPERATE A LV-VSR UNTIL A VACUUM
INTEGRITY TEST IS PERFORMED.

5.11 PASSIVE INTERLOCKS

The LV-VSR is equipped with interlocking for safety during the
insertion and removal process.
When the LV-VSR is in between the test and connect position, the
unit is held in a "trip-free" position. The position cam in the unit does
not allow the internal position switch to close, which prevents a
close command from closing the LV-VSR.
When the LV-VSR is closed, the crank shutter on the unit is held
securely, which prevents an operator from inserting a closed unit or
removing a closed unit from the cell.
 CAUTION
DO NOT LEAVE THE RACKING CRANK IN PLACE WHEN OPERATING THE
VSR. THIS MAY CAUSE DAMAGE TO COMPONENTS.