3WL air circuit breakers
3.4 Functions and parameters
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
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3.3.3
Delay of the threshold warning
You can parameterize whether a warning is generated when a threshold value is violated.
This can be delayed like the extended protection function. These warnings are
communicated on the CubicleBUS (e.g. for the configurable output module or as a trigger for
the waveform buffer) and transferred via the COM15.
Table 3- 10 Threshold values of the metering function
Parameters
Setting range
Possible delay
Overcurrent
30 … 10000 A
0 … 255 s
Overcurrent ground fault
30 … 12000 A
0 … 255 s
Overcurrent N-conductor
30 … 10000 A
0 … 255 s
Phase unbalance current
5 … 50%
0 … 255 s
Long-term mean value of current
30 … 10000 A
0 … 255 s
THD current
5 … 50%
0 … 255 s
Undervoltage
100 … 1100 V
0 … 255 s
Overvoltage
100 … 1100 V
0 … 255 s
Phase unbalance voltage
3 … 50%
0 … 255 s
THD voltage
3 … 50%
0 … 255 s
Peak factor and form factor
1 … 2.550
5 … 255 s
Active power in normal direction
1 … 12000 kW
5 … 255 s
Active power in reverse direction
1 … 12000 kW
0 … 255 s
Power factor, capacitive
- 0.999 … – 1.000
0 … 255 s
Power factor, inductive
- 0.999 … – 1.000
0 … 255 s
Long-time mean value of active power
1 … 12000 kW
0 … 255 s
Apparent power
1 … 12000 kVA
0 … 255 s
Reactive power in normal direction
1 … 12000 kvar
0 … 255 s
Reactive power in reverse direction
1 … 12000 kvar
0 … 255 s
Long-time mean value of apparent power
1 … 12000 kVA
0 … 255 s
Long-time mean value of reactive power
1 … 12000 kvar
0 … 255 s
Underfrequency
40 … 70 Hz
0 … 255 s
Overfrequency
40 … 70 Hz
0 … 255 s
3.4
Functions and parameters
3.4.1
Important functions and parameters for communication
Thanks to their modular design and many diverse modules, the SENTRON WL circuit
breakers provide an extremely large range of functions far beyond that of strict protection
functions. This includes, for example, load management, threshold values, or additional
tripping conditions of the extended protection function. These functions can also be utilized
without communication.