Eaton VCP-W Instructions For Installation, Operation And Maintenance page 31

IB131006EN
Breaker pan assembly
Callout descriptions for Figure 4-2D
1. Grounding contact grounds the breaker in positions.
2. The levering system prevents removal of the
breaker in any position other than the Disconnect
(or Test) position.
3. The control wiring
disconnecting by means of a 25-point female
receptacle arranged to connect to a male plug on
the breaker. The secondary disconnect is the
connection for the control leads between the
removable breaker and the stationary housing (see
the breaker instruction book for further description).
Manual secondary: Represents a manually engaged
secondary assembly that requires the customer to
engage the secondary harness manually when the
breaker is in the Disconnect position. When engaged,
the breaker will now be in the Test position.
Automatic secondary: Indicates an automatically
engaged secondary as offered on the BPI pan assembly
and requires no manual input from the customer to
engage the secondary harness. The secondary harness
will engage automatically when the breaker is levered-in
to the discrete Test position.
The secondary harness
automatically when the
Disconnect position.
4. Racking screw performs breaker insertion and
withdrawal.
5. Moving block couples to breaker for insertion and
withdrawal.
6. Slider is used with #8 to prevent levering a closed
breaker. May also be used in conjunction with #12
to padlock a breaker in either position.
7. Indicates when the breaker is in the fully connected
position.
Standard indication: Represents positive indication of
the breaker in the Connect position by use of a red flag
that rotates into viewing position when the breaker is
fully connected.
BPI (breaker position indication) Label: Represents
positive indication of breaker location at any position
through use of a colored label mounted on the top
flange of the right hand rail assembly. Green indicates
the Disconnect position, yellow indicates the Test
position and red indicates the Connect position. Upon
arriving at any of the three discrete positions;
Disconnect, Test, and Connect, there is a black mark
that aligns with the breaker cover to indicate exact
location.
E f f ec t iv e 0 7/ 2 0 1 7
Courtesy of NationalSwitchgear.com
is arranged for pullout
will then disengage
breaker returns to the
8. Slider interlocks prevent removing a closed breaker.
9. The breaker MOC (mechanism-operated
compartment) switch is an assembly of switches
that is operated by a lever on the breaker
mechanism. It can contain as many as 15 normally
closed and 15 normally open contacts (beneath the
cover) in the standard design.
The MOC switch is activated by the breaker closing.
It extends a plunger out the bottom of the
mechanism and Pushes down on the MOC switch
operating mechanism. This, in turn, transmits the
motion to operate the switch.
10. The TOC switch (truck operated compartment) has
nine poles in the normal design – four contacts
make and five break as the breaker is levered to the
connected position. As the breaker is being levered
into the connected position, a bracket on the
breaker pushes the TOC switch lever during the last
inch of travel. As a result, the TOC switch can be
used to electrically indicate whether or not the
breaker is in the connected position (beneath
cover).
11. Coding plates: (see Safety features).
12. Provision for padlocking a breaker in any position.
Also a location for a key interlock.
13. Metal framework provides a closed barrier to the
primary compartment when the breaker is
connected.
14. Rail on which the breaker rolls.
15. MR2 Integral racking provisions for inclusion during
manufacturing or aftermarket
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