Operation
24
6.4 LOAD SWITCHING CONTROL
The following timing diagrams detail the differences between the load switching control options.
6.4.1 BREAKER SCHEME A
NOTE : S2 Closed Auxiliary and S1 Closed Auxiliary inputs do not affect the operation of the load
switching in Breaker Scheme A
6.4.2 S1 / S2 LOAD INHIBIT
Activation of an input configured to S1 load inhibit or S2 load inhibit inputs cause the corresponding breaker to be
opened immediately. No other change in function will occur.
When the input is deactivated the breaker is closed again if appropriate.
6.4.3 LOAD SHEDDING
If an input configured to Load Shed is activated, outputs set to Open S1 and Open S2 will energise, and inputs
configured to Open/CloseS1 and Open/CloseS2 will de-energise. Open S1 Ouput Pulse and Open S1 Ouput Pulse
will only energise if the corresponding supply was on load before application of the Load Shed input.
When the Load Shed input is deactivated, the load will be transferred back to the supply that was disconnected
before application of the input.
6.4.4 TIMING DIAGRAM
Open S1
Close S2
Close S1
Open S2
Open S1 Pulse
Close S2 Pulse
Close S1 Pulse
Open S2 Pulse
Transfer time
Transfer Time
Содержание DSE331
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