Siemens siprotec 7SA6 - Page 796

Appendix
A-72 7SA6 Manual
C53000-G1176-C156-2
• the input indication “>CB wait” is set to OPEN and
• the input indication “>Door open” is set to OPEN.
The disconnector can only be closed, if:
• the circuit breaker is set to OPEN and
• the earth switch is set to OPEN and
• the disconnector is set to OPEN or CLOS and
• the input indication “>Door open” is set to OPEN.
The disconnector can only be closed, if:
• the circuit breaker is set to CLOS and
• the disconnector is set to OPEN or CLOS and
• the earth switch is set to OPEN or CLOS and
• the input indication “>Door open” is set to OPEN.
Theearthswitchcanonlybeclosed,if:
• the circuit breaker is set to OPEN and
• the disconnector is set to OPEN and
• the earth switch is set to OPEN or CLOS and
• the input indication “>Door open” is set to OPEN.
If requirements above-mentioned are not fulfilled, the actions of the switch commands
will be blocked with error messages by DIGSI
®
4.