5SHY3545L0014 3BHB013085R0001 3BHE039203R0101 GVC736CE101 Control Pulse Card

The provided information discusses the basic functionality and operation of time delays with corresponding relay output signals in a switching sequence. Additionally, it introduces the concept of Bi-Directional Control Thyristors (BCT) developed by ABB Semiconductors. Here are the key points:

Automatic Switching Sequence:

1. Anomaly on SOURCE 1:
   • An anomaly occurs on SOURCE 1.
2. Override Momentary S1 Outage Delay:
   • Override momentary delay for SOURCE 1 outage.
3. Generator Start:
   • Generator starts.
4. SOURCE 2 OK:
   • Confirmation that SOURCE 2 is operational.
5. Transfer from S1 to S2 Delay:
   • Delay before transferring from SOURCE 1 to SOURCE 2.
6. Pre-Transfer Signal On:
   • Pre-transfer signal activates.
7. Load Shed Signal On:
   • Signal for shedding load activates.
8. Pre-Transfer S1 to S2 Delay:
   • Delay before transferring from SOURCE 1 to SOURCE 2.
9. Load Shed Delay:
   • Delay for shedding load.
10. Transfer Switch (SOURCE 1) to Position O:
    • Transfer switch from SOURCE 1 to OFF position.
11. Center-off Delay:
    • Delay in center-off position (if Delayed transition I – O – II type).
12. Transfer Switch (SOURCE 2) to Position II:
    • Transfer switch to SOURCE 2 position.
13. Post-Transfer S1 to S2 Delay:
    • Delay after transferring from SOURCE 1 to SOURCE 2.
14. Pre-Transfer Signal Off:
    • Pre-transfer signal deactivates.

Re-Transfer Sequence:

1. SOURCE 1 is Restored:
   • Normal operation resumes on SOURCE 1.
2. Transfer from S2 to S1 Delay:
   • Delay before transferring from SOURCE 2 to SOURCE 1.
3. Pre-Transfer Signal On:
   • Pre-transfer signal activates.
4. Pre-Transfer S2 to S1 Delay:
   • Delay before transferring from SOURCE 2 to SOURCE 1.
5. Transfer Switch (SOURCE 2) to Position O:
   • Transfer switch from SOURCE 2 to OFF position.
6. Center-off Delay:
   • Delay in center-off position (if Delayed transition I – O – II type).
7. Transfer Switch (SOURCE 1) to Position I:
   • Transfer switch to SOURCE 1 position.
8. Load Shed Signal Off:
   • Load shed signal deactivates.
9. Generator Stop Delay:
   • Delay before stopping the generator.
10. Post-Transfer S2 to S1 Delay:
    • Delay after transferring from SOURCE 2 to SOURCE 1.
11. Pre-Transfer Signal Off:
    • Pre-transfer signal deactivates.
12. Generator Stop:
    • Generator stops.
13. SOURCE 2 Off:
    • SOURCE 2 is turned off.

Bi-Directional Control Thyristor (BCT):

• ABB Semiconductors has developed the Bi-Directional Control Thyristor (BCT) concept.
• It involves integrating two anti-parallel high-power thyristors onto a single silicon wafer, assembled into one housing.
• Aimed at static VAr compensators, static switches, soft starters, and motor drives.
• Developed using 4“ and 5“ silicon technology with a product matrix of 73, 84, 96, and 118 mm wafers and voltages from 1800 V to 6500 V.
• Release of 4“ devices in 1998, with 3“, 3.5“, and 5“ devices planned for 1999.

Product Philosophy and Quality:

• BCT design, mechanical aspects, manufacturing, and testing follow the same technology and philosophy as ABB’s Phase Control Thyristors (PCTs).
• Flexibility in irradiation and testing processes allows for adapted standard devices.
• Assures high quality, reliability, and compatibility with PCTs.

Complement to PCT Family:

• The BCT family complements ABB Semiconductors’ existing PCT family.
• Resources in application, customer technology, rating, and evaluation have increased to support customer demands with a competitive product range.