Directional Idmt Relay Self Powered

The Directional Idmt Relay Self Powered, model CDD21PF003SBCH, is a current-operated protective relay designed for medium-voltage distribution systems. It operates on a 5A secondary current transformer input with a selectable current setting range of 1 to 4 amps and a voltage range of 63.5 to 190V AC at 50Hz. The relay has a burden of 3VA and an operating time of 3 seconds at maximum pickup, with a voltage lead/lag angle of 14 degrees lag. It uses a 1.5D case size and includes standard flag indication and a nameplate reference RFG9126 035.

This relay is built for directional fault detection in radial and ring main networks where current direction determines tripping logic. It features two make-and-break output contacts rated for 2M S/R, suitable for tripping circuit breakers or initiating alarms. The internal mechanism is self-powered from the CT secondary, eliminating the need for an external auxiliary supply. This design is typical in industrial and utility applications where reliability under low-fault-current conditions is critical, and it aligns with IEC 60255 standards for overcurrent protection relays.

Buyers in power distribution utilities, industrial plants, and renewable energy installations use this relay for feeder protection. It is commonly specified in systems with multiple feeders requiring selective coordination. The relay is supplied in standard packaging with wiring diagrams referenced as MPDZ801.23 and outline drawings MFJ 013. Trade terms are confirmed upon request; lead time and packaging quantities vary by order volume and must be verified directly with the supplier.

Vishw Automation is based in Anand, Gujarat, India, and specializes in the design and supply of electromechanical and solid-state protective relays for industrial power systems. The supplier is verified through harbor-tier credentials, indicating active participation in B2B trade channels. There is no public data on years of operation, workforce size, or export volume. The listing confirms technical documentation availability for model CDD21PF003SBCH but does not state certifications, client names, or production capacity.

The supplier's address is listed as A-19, Krishna Villa Society, near Green Villa, behind Zydus Hospital, 100 Ft Road, Anand. This suggests a localized manufacturing or assembly operation rather than a large-scale factory. No certifications such as ISO, CE, or IEC are mentioned in the source data. Buyers should request proof of test reports and calibration certificates directly, as these are not automatically provided with the product.