Dir.idmt O/c Relay 1va 1.3 Secs (non-std)

The Dir.idmt O/c relay 1VA 1.3 secs (non-std) is a directional overcurrent relay designed for protection in medium-voltage electrical systems. It operates with a current setting range of 0.5 to 2 amps, a burden of 1 VA, and a definite minimum time delay of 1.3 seconds. The relay is built for use with secondary current transformer outputs of 1 amp and supports auxiliary voltages of 100 - 125 V DC or 220 - 250 V DC. Its case size is 1-1/2D vertical, with flush mounting and a 30-degree phase-characteristic angle, as per the original Alstom CDD21PF9353ACH design.

The relay features two normally open silent contacts with a flag indicator for visual fault confirmation. It is compatible with VT/PT secondary voltages of 110 V AC and operates at 50 Hz frequency. The internal mechanism follows the inverse definite minimum time (IDMT) curve, which ensures faster tripping for higher fault currents while allowing temporary overloads to pass. This relay is not a standard model but a non-standard variant configured for specific system requirements, typically used in industrial substations and distribution networks where precise coordination is critical.

Buyers include utility operators, industrial plant engineers, and electrical contractors managing medium-voltage switchgear. The relay is supplied as a single unit with wiring diagrams MPDZ801-10-1 and outline drawing MFJ013. Packaging is industrial-grade, designed for safe transport. Trade terms are typically FOB Anand, with lead time confirmed upon order. MOQ is one unit, but bulk orders may be accommodated on request. Buyers should verify compatibility with existing control panels before procurement.

Vishw Automation is a supplier of electrical protection relays based in Anand, Gujarat, India. The company's address is listed as A-19, Krishna Villa Society, near Green Villa, behind Zydus Hospital on 100 Ft Road. There is no public information on years in business, staff size, or production capacity. The supplier has no verified certifications listed, and response metrics show zero response rate and no average response time, indicating no active communication channel on the platform.

The listing presents the supplier as a distributor or assembler of Alstom-derived relay components, not as a manufacturer. No factory images, test reports, or client references are provided. The supplier does not claim to produce relays in-house but sources or refurbishes units matching the Alstom CDD21PF9353ACH specification. Buyers should treat this as a non-manufacturer sourcing option and confirm unit authenticity and calibration before use.