16
U N I G E A R Z V C
M E D I U M V O L T A G E P R O D U C T S
Type
1
2
3
4
Keys (on request)
5
6
7
Padlocks
8
9
10
Locking magnets (on request at time of ordering)
11
12
Description
Racking truck IN
Contactor closing
Closing earthing switch
Racking truck IN
Opening panel door
Racking truck IN
Opening panel door
Earthing switch OFF
Truck racking IN lock
Earthing switch closing lock
Earthing switch opening lock
Insertion of truck
Insertion of earthing switch
Shutter open or closed
Truck racking IN/OUT
Earthing switch ON/OFF
Conditions be fulfilled
Contactor OFF, earthing switch OFF, door closed
Truck in SERVICE or ISOLATED
Truck in ISOLATED position
Earthing switch OFF
Truck in ISOLATED position, earthing switch ON
Panel door closed, earthing switch OFF
Earthing switch ON
Panel door closed
Key removed with truck in ISOLATED position
Key removed with earthing switch open
Key removed with earthing switch closed
A
B
A
B
A
B
A
B
4.3.2 Doors interlocking
The panels are equipped with the following
interlocks:
•
The fused contactor cannot be racked-in if
the contactor compartment door is open
•
The contactor compartment door cannot be
opened if the fused contactor is in SERVICE
or in an undefined position
•
The contactor/cable compartment door
cannot be opened if the earthing switch is
open
•
The contactor/cable compartment door cannot
be closed if the earthing switch is open
4.3.3 Locking devices (Figures 4/10, 4/11, 4/12)
•
The shutters can be secured independent of
each other with padlocks when the withdrawable
fused contactor has been removed
•
Access to the operating-shaft of the earthing
switch can be restricted with a padlock
4.4 Types of interlocks
•
Access to the fused contactor racking spindle
can be restricted with a padlock
•
Access to the fused contactor compartment
and the cable compartment can be restricted
with a padlock
4.3.4 Racking blocking electromagnet
The locking magnet is only active in the ISOLATED
position and SERVICE position. In intermediate
positions it has no effect.
Withdrawable fused contactors with order-related
blocking magnet Y0 may not be moved in case of
control power failure, or when there is no control
power. Do not forcibly move locked withdrawable
fused contactors! Releasing the locking magnet
Y0 when the module is in the SERVICE position
(refer to 10.4.3).