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EuroProt DVTA-EN-EP Automatic transfer device PROTECT Electronics Co. Ltd 6.2.8 Digital events Event b1 QM off b1 QM on b1 QS off b1 QS on b1 prot.block b1 inst.trigg.. b2 QM off b2 QM on b2 QS off B2 QS on b2 prot.block b2 prot.block SB QM off SB QM on SB QS off SB QS on SB prot.block Enabling input Disabling input b1 VT circ.OK s1 VT circ.OK s2 VT circ.OK b2 VT circ.OK b1 remote b2 remote SB remote Par.setting Ackn. b1 QM off b1 QM on b2 QM off b2 QM on SB QM off SB QM on Parall. Parall. b1 off. Parall. b2 off Parall. SB off Compiled by: Kálmán Kiss Explanation Circuit breaker of transformer „b1“ switched off Circuit breaker of transformer „b1“ switched on Disconnector of transformer „b1“ switched off Disconnector of transformer „b1“ switched on Protection blocking from transformer „b1 Triggerd instantaneous transfer from „b1“ Circuit breaker of transformer „b2“ switched off Circuit breaker of transformer „b2“ switched on Disconnector of transformer „b2“ switched off Disconnector of transformer „b2“ switched on Protection blocking from transformer „b2 Triggerd instantaneous transfer from „b1“ Circuit breaker of bus coupler “SB” switched off Circuit breaker of bus coupler “SB” switched on Disconnector of bus coupler “SB” switched off Disconnector of bus coupler “SB” switched on Protection blocking from bus coupler “SB” Status change of enabling Status change of disabling Voltage transformer secondary circuit of „b1“ is OK Voltage transformer secondary circuit of „s1“ is OK Voltage transformer secondary circuit of „s2“ is OK Voltage transformer secondary circuit of „b2“ is OK Remote controlled state of „b1” Remote controlled state of „b2” Remote controlled state of „SB” Parameter setting Acknowledgement b1 QM circuit breaker OFF input b1 QM circuit breaker ON input b2 QM circuit breaker OFF input b2 QM circuit breaker ON input SB QM circuit breaker OFF input SB QM circuit breaker ON input Parallel operation Transfers without voltage interruption with b1 off Transfers without voltage interruption with b2 off Transfers without voltage interruption with SB off Approved by: László Eperjesi Date: 2002 Page: 23/25
