Siemens UL 1066 Operating Instructions Manual page 83

Overcurrent protection settings
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.
The parameters for the basic functions are adjusted with rotary coding switches.
3 x 0.5
1/8"
Various additional functions are adjusted with slide switches.
The settings for the additional function "load monitoring" can be adjusted via:
- the alphanumeric display
 (page 9-93)
- the BDA
- the PROFIBUS-DP
- the MODBUS
These settings can only be adjusted if the trip unit is 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 9-12)
 Short-time delayed short-circuit tripping – S-tripping (page 9-12)
 Instantaneous short-circuit tripping – I-tripping (page 9-13)
 Ground-fault tripping – G-tripping (page 9-13)
 Neutral conductor protection – N-tripping (page 9-14)
 Load monitoring (load restore / load shedding) (page 9-14)
 Leading signal for L-tripping (page 9-14)
 Thermal memory can be switched On/Off (page 9-15)
 Ground-fault protection modules (page 9-45)
The value 0.1 is set if the
rotary switch is positioned in this zone
 (page 9-18)
NOTICE
9 – 3