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Schneider VIP400 Relay - interlocking between successive stages of overcurrent and earthfault prot

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EddyWirbelstrom

Electrical
Feb 17, 2002
214
Does the Schneider VIP400 and VIP410 relay have settings which enable interlocking between successive stages of overcurrent and earth fault protection ?
In the attached file, the blue curve has no interlocking.
The red curve is interlocked such that the second stage ( I>> ) prevails if it is faster than the blue curve.
 
 http://files.engineering.com/getfile.aspx?folder=677bcc83-77fe-4511-8747-72db77f24255&file=Relay_interlock_between__stages.docx
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No idea about that relay in specific, but generally all of the tripping conditions are ORed together so that the fastest one produces the trip. Logic allows other combinations and permutations.
 
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