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7
Instruction Booklet
IB019013EN
Effective March 2019
Zone selective interlocking test kit
For Digitrip 520M, 520MC and 1150 trip units
EATON
www.eaton.com
ZSI
Test
Box
Zone 1
Zone 2
Zone 3
Main1 Digitrip
Main1 Feeder Digitrip
Configuration 3
Main1 &
Main1 Feeder
Configuration 3
Arrangement
single
Main fault: This simulates a fault originating
on the load side of the main 1 breaker.
Feeder fault: This simulates a fault originating
on the load side of the main 1 feeder breaker.
ZSI
Test
Box
Zone 1
Zone 2
Zone 3
Main2 Digitrip
Main2 Feeder Digitrip
Configuration 4
Main2 &
Main2 Feeder
Configuration 4
Arrangement
single
Main fault: This simulates a fault originating
on the load side of the main 2 breaker.
Feeder fault: This simulates a fault originating
on the load side of the main 2 feeder breaker.