Thyristor Switching Module

With the thyristor module, we provide the main component - "The Electronic Switch"- for dynamic power factor correction. The LT-TSM series offers fast electronically controlled, self-observing thyristor switches for capacitive loads up to 50 kVAr, that are capable to switch PFC capacitors within a few milliseconds nearly without a limitation to the number of switchings during the capacitor lifetime. These switching modules are easy to install, have a fast reaction time of 5 msec and come with built-in indications of operations, faults and activation. These thyristor modules are very compact and operate at lower power losses.

• Faster response time (5 ms)
• High peak inverse voltage (2.2 kV) ensures long operational life
• Automatic thermal cut-off
• Monitoring of voltage, phase sequence, faults; display of status via LED
• No system perturbation caused by switching operations (no transients)
• No auxiliary supply needed
• Maintenance free
• No noise during switching
• Compact design ready for connection and easy installation

L&T’s range of capacitor duty Contactors is specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the contactors are provided with damping resistors which limit the value of inrush current to a safe value. The contactors are used in APFC panels for switching power capacitors. Selection of these capacitors depends on the amount of reactive power compensation required.

• Separately terminated de-latching contacts for enhanced operational reliability
• Improved switching performance
• Dual contact gap for auxiliary contacts
• Separate termination of damping resistors
• Encapsulated resistor assembly
• Wide and chatter-free operating band
• Higher electrical life
• Enhanced product safety

Thyristor Switching Module

With the thyristor module, we provide the main component - "The Electronic Switch"- for dynamic power factor correction. The LT-TSM series offers fast electronically controlled, self-observing thyristor switches for capacitive loads up to 50 kVAr, that are capable to switch PFC capacitors within a few milliseconds nearly without a limitation to the number of switchings during the capacitor lifetime. These switching modules are easy to install, have a fast reaction time of 5 msec and come with built-in indications of operations, faults and activation. These thyristor modules are very compact and operate at lower power losses.

• Faster response time (5 ms)
• High peak inverse voltage (2.2 kV) ensures long operational life
• Automatic thermal cut-off
• Monitoring of voltage, phase sequence, faults; display of status via LED
• No system perturbation caused by switching operations (no transients)
• No auxiliary supply needed
• Maintenance free
• No noise during switching
• Compact design ready for connection and easy installation

L&T’s range of capacitor duty Contactors is specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the contactors are provided with damping resistors which limit the value of inrush current to a safe value. The contactors are used in APFC panels for switching power capacitors. Selection of these capacitors depends on the amount of reactive power compensation required.

• Separately terminated de-latching contacts for enhanced operational reliability
• Improved switching performance
• Dual contact gap for auxiliary contacts
• Separate termination of damping resistors
• Encapsulated resistor assembly
• Wide and chatter-free operating band
• Higher electrical life
• Enhanced product safety