Siemens Reyrolle 7SR191 Capacitor Bank Protection Relay
The Siemens Reyrolle 7SR191 “Capa” is a numerical protection relay specifically designed for capacitor bank protection in power distribution systems. It offers advanced functionality for all common connection configurations, including Single Star, Double Star, Delta, and H-Configuration. The 7SR191 provides reliable protection and monitoring for internally or externally fused and fuseless capacitor banks, improving power factor, system efficiency, and minimizing power losses
Technical Specifications
Numerical relay for capacitor bank protection
Supports Single Star, Double Star, Delta, and H configurations
3-pole overcurrent + 1-pole unbalance or 1-pole overcurrent + 3-pole unbalance options
Optional voltage inputs and overvoltage protection via current integration
Re-energization blocking feature for safe operation
Programmable inverse voltage, current, and thermal curves
Comprehensive protection functions: overcurrent, unbalance, earth fault, under/over voltage, over/under frequency, negative phase sequence, thermal overload, REF, and harmonic analysis
Communication and SCADA integration (IEC protocols)
Self-monitoring and multiple setting groups
Supports Single Star, Double Star, Delta, and H configurations
3-pole overcurrent + 1-pole unbalance or 1-pole overcurrent + 3-pole unbalance options
Optional voltage inputs and overvoltage protection via current integration
Re-energization blocking feature for safe operation
Programmable inverse voltage, current, and thermal curves
Comprehensive protection functions: overcurrent, unbalance, earth fault, under/over voltage, over/under frequency, negative phase sequence, thermal overload, REF, and harmonic analysis
Communication and SCADA integration (IEC protocols)
Self-monitoring and multiple setting groups
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