Types Of Interlocks; Standard Safety Interlocks (Mandatory); Keys (On Request); Padlocks - ABB UniGear ZS1 Installation, Operation And Maintenance Instructions Manual

P A N E L D E S I G N A N D E Q U I P M E N T

Types of interlocks

Standard safety interlocks (mandatory)

Type Description
1 A Apparatus racking-in/out
B Apparatus closing
2 A Apparatus racking-in
B Apparatus multi-contact plug unplugging
3 A Earthing switch closing
B Apparatus racking-in
4 A Apparatus compartment door opening
B Apparatus racking-in
A Feeder compartment door opening
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B
Earthing switch opening
Note: Apparatus is circuit-breaker.

Keys (on request)

6 Apparatus racking-in lock
7 Earthing switch closing lock
8 Earthing switch opening lock
9 Insertion of the apparatus raking-in/out crank lever
10 Insertion of the earthing switch operating lever

Padlocks

11 Apparatus compartment door opening
12 Cable compartment door opening
13 Insertion of the apparatus raking-in/out crank lever
14 Insertion of the earthing switch operating lever
15 Shutters opening or closing
It is necessary to use padlocks with 5-8 mm hasp diameter.
Locking magnets (on request)
16 Apparatus racking-in/out
17 Earthing switch ON/OFF
Accessory devices
20 Shutters fail-safe
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Apparatus-switchgear unit compatibility matrix
Circuit-breaker mechanical operating mechanism
Condition to be fulfilled
Apparatus in OFF position
Defined truck position
Apparatus multi-contact plug plugged
Truck in test position
Truck in test position
Earthing switch in OFF position
Truck in test position
Apparatus compartment door closed
Earthing switch in OFF position
Cable compartment door closed
Can only be removed with the truck in the racked-out position.
Can only be removed with the earthing switch open.
Can only be removed with the earthing closed.
Can always be removed.
Can always be removed.
Magnet energized.
Magnet energized.
The device locks the shutters in the closed position when the
apparatus is removed from the compartment. The operator
cannot open the shut ters manually. The shutters can only be
operated by the apparatus truck.
The apparatus multi-contact plug and relative switchgear unit
socket are equipped with a mechanical matrix, that disables
apparatus racking-in into a switchgear unit with an
inappropriate rated current.
The apparatus compartment is equipped with a mechanical
device, that enables circuit-breaker closing and/or opening
directly by means of the front operating mechanism pushbuttons,
keeping the door closed. The controls can be operated with the
circuit-breakers in the operation and racked-out position.
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