Siemens Reyrolle 7SR54 Transformer Protection Relay
The Siemens Reyrolle 7SR54 is an advanced transformer differential protection relay designed for two and three winding transformers. With precision fault detection and selective tripping, it provides superior protection against internal transformer faults, minimizing damage and downtime
Technical Specifications
Inputs/Outputs:
• 8 CT + 16 BI + 8 BO
• 8 CT + 4 VT + 12 BI + 8 BO
• 8 CT + 4 VT + 37 BI + 18 BO
• 12 CT + 24 BI + 10 BO
• 12 CT + 4 VT + 35 BI + 16 BO
Protection Functions: Differential, overcurrent, restricted earth fault, over/undervoltage, overexcitation, thermal overload, breaker failure, frequency, inrush detection, and lockout.
Display: 128×128 backlit LCD with user-friendly interface and programmable LEDs.
Housing: Withdrawable relay design for easy maintenance.
Communication: IEC 61850, Modbus, DNP3, and IEC 60870-5-103 compatible.
Applications: Transformer and reactor protection in substations, power plants, and industrial systems
• 8 CT + 16 BI + 8 BO
• 8 CT + 4 VT + 12 BI + 8 BO
• 8 CT + 4 VT + 37 BI + 18 BO
• 12 CT + 24 BI + 10 BO
• 12 CT + 4 VT + 35 BI + 16 BO
Protection Functions: Differential, overcurrent, restricted earth fault, over/undervoltage, overexcitation, thermal overload, breaker failure, frequency, inrush detection, and lockout.
Display: 128×128 backlit LCD with user-friendly interface and programmable LEDs.
Housing: Withdrawable relay design for easy maintenance.
Communication: IEC 61850, Modbus, DNP3, and IEC 60870-5-103 compatible.
Applications: Transformer and reactor protection in substations, power plants, and industrial systems
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