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We have gas turbine with mark-vie control system.
Presently 125VDC input power is given to control system through single feeder 32A. It is connected to JPDC card JD1 connector through CPF filter and LPFI card. We have 125VDC extra feeder 32A and want to provide redundant power supply to control system to avoid turbine trip in case of one power failure. We checked at JPDC card and found it have two 125VDC input provision which is JD1 AND JD2.
At JD1 already connected and now want to connect at JD2 redundant power source though extra CPF but problem is for LFPI card supply redundant. Mind you, We can not connect DACA because we have UPS floating voltage and DACA needs 110VAC.
Kindly suggest
How will provide dual power source LPFI.
2. Any circuit diagram suggest for dual power for control system through extra feeder.
3. If we do not connect dual power to LFPI card then what will happen in case of existing power failure of LFPI card; running GT will trip or not.
4. What is role of LFPI card in turbine.
5. If we make one bus bar for both feeder with positive and negative wire looping and connect to LPFI card, is it possible.
Presently 125VDC input power is given to control system through single feeder 32A. It is connected to JPDC card JD1 connector through CPF filter and LPFI card. We have 125VDC extra feeder 32A and want to provide redundant power supply to control system to avoid turbine trip in case of one power failure. We checked at JPDC card and found it have two 125VDC input provision which is JD1 AND JD2.
At JD1 already connected and now want to connect at JD2 redundant power source though extra CPF but problem is for LFPI card supply redundant. Mind you, We can not connect DACA because we have UPS floating voltage and DACA needs 110VAC.
Kindly suggest
How will provide dual power source LPFI.
2. Any circuit diagram suggest for dual power for control system through extra feeder.
3. If we do not connect dual power to LFPI card then what will happen in case of existing power failure of LFPI card; running GT will trip or not.
4. What is role of LFPI card in turbine.
5. If we make one bus bar for both feeder with positive and negative wire looping and connect to LPFI card, is it possible.