hager h3+, Communication Instruction Manual, Page: 17 / 127

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6LE005550A
Description of the h3+ communication system
2.1 h3+ electronic trip units
Trip alarms
Customisable alarms
System alarms
See § 3.4 Managing alarms and logs
Event logs
Trips,
Alarms
Settings
See § 3.4 Managing alarms and logs
Integrated outputs
PTA output contact
OAC output contact
Other configurations
Refer to § 3.3.10 Configuring measurements, page 55.
The Energy trip unit can be supplied via an external supply in order to ensure
continuous operation of the measurement, alarm and configuration functions.
However, these functions can also continue without an external supply, from
the following minimum conditions:
- Circuit breaker closed
- minimum current through the circuit breaker; below is a table per rating
Rating 1 pole supplied 2 poles supplied 3 poles supplied
40 A NA >14 A >10 A
100 A >25 A >15 A >15 A
160 A >32 A >16 A >16 A
250 A >50 A >25 A >25 A
It is recommended to use the HTG911H 24 VDC SELV (Safety Extra Low Voltage)
supply as an external supply.
In addition, it is recommended to use a secure 24 VDC supply to guarantee
complete continuity of service and correct operation even if the event of a
distribution network failure.