Siemens Reyrolle Solkor Rf 7PG2111-1DA30-0DD0 Feeder Protection Relay 5A

Overview

Product Description

The Siemens Reyrolle Solkor Rf 7PG2111-1DA30-0DD0 is a specialist circulating-current feeder protection relay designed for differential protection applications using pilot wires. The relay is part of the Reyrolle 7PG21 Solkor protection range and is designed for reliable protection of electrical feeders against faults within the protected zone. This specific configuration is the Solkor Rf mode with a 5A AC rating, making it suitable for compatible current-transformer applications. The relay uses pilot-wire technology and has a maximum pilot-loop resistance of 2000 ohms. Its standard insulation level provides 5 kV pilot-to-earth withstand. The 7PG2111-1DA30-0DD0 features an Epsilon E6 case, equivalent to a 4U-high housing, with three normally open contacts and no normally closed contacts. The relay provides self-reset contacts and a hand-reset flag arrangement. The Solkor Rf is intended for use as part of a compatible pilot-wire protection scheme. Siemens documentation notes that compatible Solkor devices can be paired for differential protection, while the Solkor Rf arrangement requires suitable pilot supervision equipment and associated system components where applicable. For replacement and procurement purposes, the exact MLFB / order number 7PG2111-1DA30-0DD0 should be checked against the existing relay and protection-system configuration before installation. MTC Trades and Tech Solutions supplies industrial electrical, automation, protection, and technical equipment for professional maintenance, replacement, and project requirements.