Understanding Trip Circuit Supervision Relay and Circuit

Trip Circuit Supervision is one of the very important circuit in substation , power plant and distribution networks

Following topics are covered in detail

• What is Trip Circuit & Tripping Coil
• Understanding Mechanism of CB
• Closing & Opening Spring operation
• Operation of tripping coil & closing coil
• Why it is important to Monitor Trip Circuit
• Why Two Sets of Trip Circuit & Coils are provided
• Why It is important to check TC1 should be feed from DC1 & TC2 from DC2 respectively
• How wrong wiring connection result in damage of substation
• Ways to monitor the Trip coil Supervision ( Relay or Bulb)
• Monitoring Trip Circuit When CB is closed
• Monitoring Trip Circuit When CB is open
• Monitoring Trip Circuit When trip Command is being issued
• Monitoring TCS when trip command is latched ( Case where tripping is through lockout Relay)
• Concept of RC circuit for stable operation of relay during switching
• Time Delay in issuing alarm signal
• Function of External Resistor
• Understanding MVAX TCS Relay
• Understanding Schneider TCS Relay
• Understanding ABB TCS Relay
• Understanding ABB RXMB TCS Relay
• Understanding Wiring of TCS in Schematic Drawing

Regards

Muhammad Kashif