hager hw+ User Manual

756LE008146B
Advanced protection functions
5.7 Current unbalance protection (UNBC-46)
nba46: activation threshold of
the current unbalance
protection
t46: activation time delay of the
current unbalance protection
t46
I
t
nba46
Adjustment parameters
UNBC-46
ANSI 46
Config. Configuration of the protection
Inhibit
Inhibition of the protection
Threshold Activation threshold nba46
Time Activation time delay t46
Configuration
The configuration defines the protection behaviour when the activation threshold and the time
delay are reached.
Trip Circuit breaker tripping
Alarm Alarm without tripping the circuit breaker
O Protection deactivated (default setting)
Inhibition
This parameter allows the protection action to be inhibited temporarily based on a command
sent in one of the following ways:
- sentinel Energy display from the MODE menu
- Hager Power setup software (Commands menu)
- Digital input (DI): assignment of the digital input to the inhibition required
- Modbus communication.
On The protection is inhibited while the inhibition command is at On
O The protection is fully operational while the inhibition command is at O
Activation threshold
The activation threshold is expressed as a percentage.
Adjustment range: 2 to 90% in increments of 1.
Precision of the activation threshold: +/- 5 units, for example for a 20% threshold the
accuracy will be between 15% and 25%.
Activation time delay
Adjustment range: 0.5 to 60.0 s with steps of 0.1.
Accuracy of the activation time: +/- 40 ms from 0.1 to 2 s +/-2 % above 2 s.
Hysteresis: 98%.
Minimum tripping time: 60 ms.
Maximum tripping time: 140 ms with time delay set to 0.5 s.

hager hw+ Specifications

General

Brand	hager
Model	hw+
Category	Circuit breakers
Language	English