Thyristor Fault Monitor for use in Heating Applications. 3-Phase. TFM103-690V

This module is intended for on-load monitoring of thyristors for open or short circuits. It can be used with single phase or 3-phase 2 or 3-leg thyristor stacks or solid state relays controlling AC loads operating in burst fire or single cycle burst fire modes and activated by a standard logic signal (not analogue input thyristor controllers).

• Monitors for short or open circuit devices under load
• Suitable for single phase or 3 or 4-wire 3-phase loads
• May be used with 2-leg or 3-leg control of a 3-phase load.
• Suitable for monitoring on nominal 380V to 690V 3-phase supplies or 220V to 690V single phase supplies
• Latched or non-latched alarm outputs
• Volt free alarm contacts and LED indication
• Requires a 24V DC Power Supply
• For use with thyristor stacks or solid state relays controlled by a logic signal