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Transformer Protection and Control Relay RET620 IEC
ABB ACH550 drives
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Technical Specifications
Advanced differential protection with high inrush stability
Protection, control, monitoring and supervision integrated in one relay
Supports various neutral-earthing methods (high-impedance / low-impedance REF)
Optional automatic voltage regulation for OLTC transformers
Optional arc protection
Withdrawable plug-in unit for fast installation and testing
Large graphical display + web-browser based HMI with customizable SLDs
IEC 61850 Ed.1 & Ed.2, HSR/PRP redundancy, GOOSE, IEC 61850-9-2 LE
Supports Modbus, DNP3, IEC 60870-5-103
IEEE 1588 V2 PTP high-accuracy time synchronization
Wide functional scalability and configurable logic
Power range: 0.75–355 kW
Voltage range: 208–480 V AC
Enclosure classes: IP21 & IP54
Features: Embedded BACnet, 2 PID controllers, HVAC-specific software, interactive startup assistant, real-time clock, harmonic mitigation
Benefits: Space-saving design, energy efficiency, interactive diagnostic assistant, noise reduction, flange mounting, fault logger
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Technical specifications
Advanced differential protection with high inrush stability
Protection, control, monitoring and supervision integrated in one relay
Supports various neutral-earthing methods (high-impedance / low-impedance REF)
Optional automatic voltage regulation for OLTC transformers
Optional arc protection
Withdrawable plug-in unit for fast installation and testing
Large graphical display + web-browser based HMI with customizable SLDs
IEC 61850 Ed.1 & Ed.2, HSR/PRP redundancy, GOOSE, IEC 61850-9-2 LE
Supports Modbus, DNP3, IEC 60870-5-103
IEEE 1588 V2 PTP high-accuracy time synchronization
Wide functional scalability and configurable logic
Power range: 0.75–355 kW
Voltage range: 208–480 V AC
Enclosure classes: IP21 & IP54
Features: Embedded BACnet, 2 PID controllers, HVAC-specific software, interactive startup assistant, real-time clock, harmonic mitigation
Benefits: Space-saving design, energy efficiency, interactive diagnostic assistant, noise reduction, flange mounting, fault logger
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