9
Instruction Book
IB182942EN July 2018 www.eaton.com
DST-2-VR
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VR-Series
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Replacement Circuit Breaker
3.2 HANDLING
WARNING
DO NOT USE ANY LIFTING DEVICE AS A PLATFORM FOR PERFORMING
MAINTENANCE, REPAIR OR ADJUSTMENT OF THE CIRCUIT BREAKER OR
FOR OPENING, CLOSING THE CONTACTS OR CHARGING THE SPRINGS.
THE CIRCUIT BREAKER MAY SLIP OR FALL CAUSING SEVERE PERSONAL
INJURY. ALWAYS PERFORM MAINTENANCE, REPAIR AND ADJUSTMENTS
ON A WORKBENCH CAPABLE OF SUPPORTING THE CIRCUIT BREAKER
TYPE.
VR-Series
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circuit breaker shipping containers are designed to be
handled either by use of an overhead lifting device or by a fork lift
truck. If containers must be skidded for any distance, it is preferable
to use roller conveyors or individual pipe rollers.
Once a circuit breaker has been inspected for shipping damage, it
is best to return it to its original shipping crate until it is ready to be
installed in the metal-clad switchgear.
When the circuit breaker is ready for installation, a lifting harness in
conjunction with an overhead lift or portable floor lift can be used to
move the circuit breaker. If the circuit breaker is to be lifted, position
the lifting device over the circuit breaker and insert the lifting harness
hooks into the circuit breaker side lifting points and secure (lifting
straps should have at least a 1000lbs lift capacity). Be sure the hooks
are firmly attached before lifting the circuit breaker. Stand a safe
distance away from the circuit breaker while lifting and moving.
3.3 STORAGE
If the circuit breaker is to be placed in storage, maximum protection
can be obtained by keeping it in the original shipping crate. Confirm
that the circuit breaker is free from shipping damage and is in
satisfactory operating condition before placing it in to storage.
The circuit breaker is shipped with its contacts open and closing
springs discharged. The indicators on the front cover should confirm
this. Insert the end of the maintenance tool into the manual charge
socket opening and charge the closing springs by moving the
handle up and down the full range of motion. When charging is
complete the ratchet will no longer advance and the spring charged
/ discharged indicator displays ‘Charged’. (Figure Set 3.3). Remove
the maintenance tool. Push the “manual close” operator. The circuit
breaker will close as shown by the circuit breaker contacts ‘Closed’
indicator. Push the “manual trip” operator. The circuit breaker will
trip as shown by the circuit breaker contacts ‘Open’ indicator. After
completing this initial check, leave the closing springs ‘Discharged’
and circuit breaker contacts ‘Open’.
Outdoor storage is NOT recommended. If unavoidable, the outdoor
location must be well drained and a temporary shelter from sun,
rain, snow, corrosive fumes, dust, dirt, falling objects, excessive
moisture, etc. must be provided. Containers should be arranged
to permit free circulation of air on all sides and temporary heaters
should be used to minimize condensation. Moisture can cause
rusting of metal parts and deterioration of high voltage insulation.
A heat level of approximately 400 watts for each 100 cubic feet of
volume is recommended with the heaters distributed uniformly
throughout the structure near the floor.
Indoor storage should be in a building with sufficient heat and
circulation to prevent condensation. If the building is not heated, the
same general rule for heat as for outdoor storage should be applied.
3.4 APPROXIMATE WEIGHT BY TYPE
Tablt 3. Approximatt Wtight by Typt
Type
Amperes
LBs
DST-2-VR
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500
1200
650*
2000
750*
DST-2-VR
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750
1200
630*
2000
750*
otte:
N
* = An additional 75# is added with the optional internal Rotary Racking
system.
Figurt 3.2. Lifting DST-2-VR
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