Service Continuity - ABB Uniswitch Operation And Maintenance Manual

References

3.2.3 Service continuity

LSC Category
Table 3.1 Accessibility to compartments (according to IEC 62271-200).
Compartment to
be opened
ABB
Uniswitc h Operation and
Maintenanc e Manual
Further details about installation and equipping the switchgear can be
obtained from the order documents.
For switchgear the Loss of Service Continuity Category (LSC) describes
the extent to which other compartments and/or functional units may
remain energised when a main circuit compartment is opened.
According to IEC 62271-200 the Loss of Service Continuity (LSC) of
Uniswitch switchgear is LSC2A-PI. The PI denotes that partition and
shutters are insulation.
Fuse/cable
Busbar
Circuit-breaker (fixed)
Circuit-breaker
(withdrawable)
Low voltage
Part of the switchgear that can be left energised
Cable corresponding to the
functional unit
No
Not relevant: non-accessible
No
No
Yes
All other functional units
Yes
Not relevant: non-accessible
Yes
Yes
Yes
UNI S14GB 05-02
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