Siemens Reyrolle 7PG21 Pilot Wire Current Differential Feeder Protection

Type: Pilot Wire Current Differential Feeder Protection Relay ، Brand: Siemens Reyrolle ، Model: 7PG21 ، Applications: Overhead lines, underground cables, interconnector circuits ، Features: ، Relays and CTs installed at both ends of the circuit, connected via dedicated pilot wires ، Simple and robust design ensuring reliable operation ، Three current inputs per relay, housed in E6 enclosures ، High transient stability and fast fault detection ، Adjustable phase and earth fault settings ، Minimal variation of performance with pilot wire length ، Optional 15 kV pilot isolation and supervision schemes ، Test points available on relay fascia ، Optional remote intertripping via pilot cores ، Functions: ، Protection: Three-phase differential protection via pilot wires ، Supervision: Optional pilot wire supervision and overcurrent check ، Control: Optional intertripping/unstabilising control ، Compliance: IEC standards, Reyrolle Solkor R & Solkor Rf compatible ، Mounting: Panel-mounted design ، Maintenance: Easy installation, commissioning, and servicing