For medium voltage circuit protectors, capacitor trip devices are often used. Device lockout relays can be used in secondary applications powered by AC and a control power converter. Each circuit breaker requires a CTD. CTDs must be connected in parallel with multiple loads.
It is very easy to use. The trip capacitor is connected to a half-wave and bridge rectifier in order to control ac power. The capacitor’s charging time is determined by the proximity of cycles, and it is disconnected with no continuous load connected. The protective relay is responsible for releasing the stored energy to trip the circuit breakers or lockout relay.
When the system is properly boosted, the capacitor maintains the voltage of the incoming power supply. As the capacitor discharges, AC voltage is lost. If the trip command starts, the capacitor charged will be released and trip the circuit breaker.
It is important to select the right size capacitor to fit the trip coil of the breakers. The size and magnitude of the capacitor are designed to meet a minimum standard.
It is crucial to get the range of the power supply just right if you plan to install a capacitor trip. It is important to work with an experienced manufacturer and conduct value testing. Finding the right device for your needs will ensure that your system is of high-quality and optimized to work with your electronics. If you would like to learn more about capacitor trip devices, please contact us.
This post was written by Justin Tidd, Director at Becker/SMC. For nearly a half a century, Becker Mining has been at the forefront of safety, producing the best Capacitor Trip in the industry. Becker/SMC is the industry’s leader in increasingly more sophisticated electrical control systems. Most of the major innovations, design features and specialized electrical components have been developed by Becker/SMC.
