9 – 8
Overcurrent protection settings
All parameters for the basic and the additional functions can be adjusted via:
- the graphical display (page 9-28)
- TD400 and the software "powerconfig"
- the COM modules with a PC with the software “powerconfig” installed (page 29-2)
To do this, the trip unit must be activated, i.e. it must be connected to an external 24 V DC voltage supply (UL Listed Class 2).
Protective functions
Overload protection – L-tripping (page 9-11)
Short-time delayed short-circuit tripping – S-tripping (page 9-11)
Instantaneous short-circuit tripping – I-tripping (page 9-12)
Ground-fault tripping – G-tripping (page 9-12)
Neutral conductor protection – N-tripping (page 9-13)
Load monitoring (load restore / load shedding) (page 9-13)
Leading signal for L-tripping (page 9-13)
Thermal memory can be switched On/Off (page 9-14)
Ground-fault protection modules (page 9-44)
Characteristics
The ranges shown in the following are only setting ranges of the respective parameters. Possible tolerance ranges are not included here.
Tolerance ranges are shown in the Easy TCC Time Current Curve Software.
The characteristics apply to the circuit breaker version H-class, 480 V, frame size II, with ground-fault protection module.
L-tripping
(page 9-4)
I-tripping
(page 9-5)
Ground-fault tripping
(page 9-5)
NOTICE
Circuit breaker may trip.
If the trip settings are changed while the breaker is closed (and under load) the breaker may trip.
Adjust parameters only when the circuit breaker is in the open position.
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