A DC relay is a re-closing relay that works in a solid-state system. This device can be used to close a DC breaker unfolded lines. The goal of this device is to prevent failures in the event that there is a fault or an overcurrent trip. When a fault occurs in the system or overcurrent trip is detected, the relay will provide a full verification before the power reaches the breaker. The monitoring system can work to close the breaker automatically and then re-close the breaker when the line is clear. Most of these relays are designed for use on heavy rail and light rail systems.The main features of this device include an LED meter for an accurate and easy to read rating on power and fault issues.The load measure memory also records instances of events for proper and accurate reporting. Bidirectional load measuring ensures that faults can be captured on either side of equipment. Voltage compensation also ensures that accurate readings can be leveraged during a major fault solution. This is a device that can operate on DC outputs with auto compensation for faults and more.
DC relays consist of two main units including the re-closing relay and the solid-state transducer. Transducers are a self powered unit that continues to send properly scaled voltages that are converted into the relay. The relay can be mounted closely to the transducer and this can eliminate any amount of traction voltage. The relay will respond to ongoing inputs and perform its functions with ongoing load measurements, sequencing, indication and voltage measurements. The relay will measure on the load side of the breaker and the voltage is delivered on preset values close to the breaker and a clear line.
The relay will continue to operate to manage folded measurements and to measure different voltages when load measuring is applied. The preset values inside the breaker will determine when the breaker is going to close. Setting the value for the relay and measuring the ongoing voltage can make sure that adjustments can be made for the feeder sequence and for managing load pickups.
If you’d like to learn more about our type 82 DC relay or receive a quote on your relay installation needs, contact us today to learn more. We can help you determine which type of relay will be best suited for your applications and design custom solutions to fit your needs.