Eaton 380 VCP-W 16, Инструкции по установке, эксплуатации и техническому обслуживанию

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I.B. 3A74792H08
Page 19
Effective
09/2014
breaker in a TEST position or by using a test cable, if the
circuit breaker is outside the cell structure.
For fixed breaker applications, an electrical operations check
should be performed after the breaker is appropriately
mounted, secondary wiring completed, and appropriate
interphase barriers installed.
CAUTION
BEFORE INSERTING THE CIRCUIT BREAKER
EXAMINE THE INSIDE OF THE CELL STRUCTURE
FOR EXCESSIVE DIRT OR ANYTHING THAT MIGHT
INTERFERE WITH THE CIRCUIT BREAKER
MOVEMENT.
WARNING
EXTREME CAUTION MUST BE EXERCISED TO
INSURE THAT PRIMARY CIRCUITS ARE NOT
ENERGIZED WHILE CHECKS ARE PERFORMED IN
THE CIRCUIT BREAKER COMPARTMENT. FAILURE
TO DO SO MAY RESULT IN PERSONAL INJURY OR
DEATH.
The circuit breaker is normally tested electrically in its cell
structure in the TEST position. To achieve the TEST position,
the circuit breaker must first be placed in the cell structure and
the secondary contacts engaged. To complete this testing
procedure, the operator should first be familiar with inserting
and removing the circuit breaker into and from the cell
structure.
WARNING
DO NOT PULL ON OR USE THE MAIN (PRIMARY)
CONDUCTORS AND OR THE PRIMARY DISCONNECTS TO
MANEUVER THE CIRCUIT BREAKER IN ANY FASHION.
FAILURE TO COMPLY WITH THIS CAUTION COULD
RESULT IN SIGNIFICANT EQUIPMENT DAMAGE.
4-8.1 CIRCUIT BREAKER INSERTION AND
REMOVAL
The drawout VCP-W circuit breaker is designed to be in one of
three different positions within the structure with the door
closed, DISCONNECT, TEST and CONNECT-ED. While in the
structure, the circuit breaker should never be allowed to remain
at an intermediate position between two of the three above
mentioned designed positions. Position the breaker in front of
the structure. Once the side mounted wheels are aligned with
the rails, push the breaker into the structure as far as it will
move. The levering latch must be fully engaged or the circuit
breaker will not be able to be inserted. This first position is the
DISCONNECT position. Without moving the
circuit breaker, manually engaging the secondary contacts
now makes this the TEST position.
To engage the secondary contacts, grasp the structure
mounted secondary disconnect cage handle located below
the left side of the circuit breaker, and pull it for-ward as far
as possible to make the secondary engagement. As soon
as control power is available, the motor will charge the
closing springs.
To move the circuit breaker to the CONNECTED position,
engage the levering crank with the structure mounted
levering shaft and begin turning the handle in a clockwise
direction. Keep in mind that the levering crank cannot be
engaged with the circuit breaker closed. Structure mounted
positive guidance rails interface with the circuit breaker
alignment rollers to insure proper primary and secondary
connections.
NOTICE
The circuit breaker includes all necessary interlocks
that when interfaced with a compatible structure will
render the circuit breaker mechanism mechanically
and electrically trip-free during the levering process
into or out of the structure. For detailed information
pertaining to individual circuit breaker interlocks,
refer to Paragraph 4-9 in this section.
As the handle is turned, the circuit breaker will move slowly
toward the rear of the structure and the integrally mounted
floor movement wheels will be lifted from the floor of the
structure. Eventually, the integrally mounted wheels are
separated from the structure floor by approximately 1/8
inch, and the circuit breaker is suspended in the structure.
This design insures positive primary and secondary
connections, even if the assembly’s mounting conditions
are less than ideal.
When the circuit breaker reaches the CONNECTED
position, it will become impossible to continue turning the
levering crank in the clockwise direction. The secondary
contacts will automatically engage in the CONNECTED
position, if not already engaged manually in the TEST
position.
To remove the circuit breaker from the structure, reverse
the procedure just described by turning the levering crank in
a counterclockwise direction. Keep in mind that safety
interlocks may cause the circuit breaker to open and/or
springs discharge during the removal procedure. It depends
on what condition the circuit breaker was in as removal
began.