hager hw+ User Manual

60 6LE008146B
Protection functions
4.7 Zone Selective Interlocking function (ZSI)
Fault example b):
- If a fault occurs at point b), only the Q1 circuit breaker detects the electrical fault.
The Q1 circuit breaker does not receive a signal from Q2, it opens immediately, despite the
previously set tripping time delay.
Adjusting the ZSI protection setting
ZSI protection can be activated on hw+ circuit breakers from the SHORT TIME DELAY
PROTECTION or EARTH PROTECTION menu of the sentinel Energy display or the Hager
Power setup software.
ZSI STD On or O (O by default)
ZSI GF On or O (O by default)
N.B.
It is important to keep the ZSI protection deactivated on an hw+ circuit breaker not connected
to its downstream circuit breakers (ZSI STD1, GF1, Cmn1 terminals not used). If it is activated,
the circuit breaker will trip immediately during an electrical fault without waiting for the end of
the Short time
delay and the earth fault protection time delay.
Connection of ZSI protection
hw+ air circuit breakers have 6 ZSI terminal blocks enabling the upstream or downstream
circuit breakers to be connected to deploy zone selectivity (ZSI).
Type of connection
Total number of circuit
breakers
Max. distance between 2 circuit
breakers
Upstream 3 300 m
Downstream 7 300 m
Recommended connection cable: 3 x 1 to 1.5 mm
2
shielded twisted pair.
RESET AUTO
MANUAL
A1
Drawout circuit breaker
RESET AUTO
MANUAL
Fixed circuit breaker

hager hw+ Specifications

General

Brand	hager
Model	hw+
Category	Circuit breakers
Language	English