ASHIDA has designed & manufactured the unique product for protection of Ring Main Units. ADR241S is a self powered relay or dual powered relay. This relay can be used in RMUs where there is no external battery backup available.
Whenever the current is not available, ADR241S relay takes power from CT Current for its operation. Once the tripping operation takes place, the relay takes power from the battery to view fault current.
ADR241S is used for protection of RMUs. Whenever there is the fault in the operations of Ring Main Units, the relay senses and stores the data. With the introduction of a communicable, the data can be communicated through SCADA systems.
ASHIDA relay is available in different models and can be installed as per the applications and space available in Ring Main Units. ADR241S is available in vertical, horizontal and draw out types.
Following protection functions are available in Self Powered Relay: