Protection Relays

SIGMA POWER SERVICES has expertise in configuring and testing advanced micro-controller-based protection & control relays of various makes including SEL, ABB, SIEMENS, MICOM, General Electric, Schneider, ZIV, etc. Some types of protection relays include:

• Advance Distance Protection
• Line Differential Protection
• Low Impedance Bus-bar Protection
• High Impedance Busbar Protection
• Transformer Differential Protection
• Bay Control Units
• Auto-reclosure
• Advance Generator Protection
• Motor Protection
• Feeder Protection
• Frequency/Voltage Protection
• Overcurrent/Earth Fault Protection
• Capacitor Bank controllers
• High Speed Transfer Switches
• ATS controllers
• IEC61850 GOOSE configurations and Testing
• Client/Server configuration & testing through IEC61850
• Modbus/Profibus configuration & testing