25
-XDB10-...
-7
-8
-9
-12
-11
-10
-6
-5
-4
-3
-2
-1
Fig. 9
Checks
After the above-mentioned operations, carry out the following
checks:
– check that the connections do not exert any force on the
terminals
– check tightness of the connections.
Fig. 10
5.6.2. Withdrawable contactors and enclosures
The withdrawable contactors are used in the UniGear ZS1
type switchgear and in the PowerCube modules.
Appropriately fixed together in the configurations defined
by the customer, the enclosures build up medium voltage
switchgear consisting of various units.
Rules for designing the switchgear
Arc proofing
The ABB enclosures are supplied with a reinforced door,
suitable for making arc proof switchgear.
• The reinforced enclosure alone cannot
guarantee arc proofing of the switchgear
designed by the customer. To guarantee
this, some representative configurations,
selected by the customer, must be
subjected to the tests according to the
prescriptions indicated in the IEC 62271-
200 Standards.
• For UniGear ZS1 type switchgear, all the
door knurls must be tightened to guarantee
arc proofing.
NEPSI.COM - Northeast Power Systems. Inc.
