+7 (812) 645-08-06
Digital relay / security / electrical line - 7ST61, 7ST63
The numerical overhead contact line protection relay Siprotec 7ST61 / 7ST63 is a selective and quick responding protection device for overhead contact lines fed from one or multiple points in AC traction power supplies. The relay possesses all functions required to protect a section of the overhead contact line and can therefore be deployed universally.
The Siprotec 7ST61 / 7ST63 numerical overhead contact line protection relay is a member of the Siprotec 4 product family, which stands for excellent quality and powerful protection relays and is characterized by the following features:
Powerful 32-bit microprocessor system
Completely numerical data processing and control, from the measurement of voltages and currents to the switching decision logic of the circuit-breaker
Complete galvanic and interference-immune isolation of the internal processing circuitry from the measurement, control and power supply circuits of the switchgear via measured value trans formers, binary input and output modules, and DC and AC voltage converters
Simple operation via integrated operator panel or connected personal computer with operating software Digsi 4
Storage of fault indications and instantaneous values for fault recording