Type: High Impedance Differential Protection Relay
Brand: Siemens Reyrolle
Model: 7PG23
Operating Principle: Voltage-operated high impedance protection
Applications: Transformer restricted earth fault protection, reactor and stator winding fault detection
Features:
Sensitive, fast fault detection for internal earth faults
High stability during external faults
User-selectable operating voltage setting
Integral non-linear voltage limiting resistor
Optional external shunt resistor for higher operating current
Operation flag indicator for clear fault identification
Compatible with Reyrolle High Impedance Software Tool for easy setting calculations
Mounted in E3 size case
Protection Functions: High impedance restricted earth fault (REF) protection
Accessories: Stabilizing resistors, setting resistors, nonlinear voltage limiting resistors (optional)
Compliance: IEC Standards
Software Support: Reyrolle High Impedance Software Tool (free download)
Product range: PowerLogic™ P5
Application: Two-winding transformer differential protection
Protection functions: 87T, 50/51, 50N/51N, 67N, 49F, 64REF, 46, 59N, 50BF, 86, arc flash protection
Measuring inputs: 6 phase CT, 2 residual CT, 1 VT
Digital inputs / outputs: 31 DI / 15 DO (including watchdog)
Power supply: 100–230 V AC, 48–250 V DC
Communication: Dual front USB ports
Cybersecurity: IEC 62443-4-2 SL1 compliant, role-based access, secure communication
Display: Color LCD 480×272 pixels
Operating temperature: −40 to +85 °C
Protection degree: IP54
Mounting: Rack, withdrawable, flush mounted
