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Siemens Reyrolle 7SR54 Transformer Differential Protection Relay
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Technical Specifications
Inputs/Outputs: 8–12 CT, up to 4 VT, up to 35 BI, and 16 BO
Communication: IEC 61850, IEC 60870-5-103, MODBUS RTU, DNP 3.0
Display: 128 × 128 LCD with graphical interface
Functions: Differential (87T), REF (87GH), Overcurrent (50/51), Earth Fault (50N/51N), Overvoltage (59), Undervoltage (27), Inrush (81HB2), Overfluxing (81HB5), Lockout (86)
Housing: Size 12, withdrawable design
Applications: Transformer, autotransformer, and reactor protection
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