Siemens Reyrolle 5 7SR5111 Directional Overcurrent Numerical Relay

The Siemens Reyrolle 5 7SR5111 is designed for directional overcurrent and earth fault protection with voltage inputs, making it suitable for ring and mesh networks. It provides selective fault detection by considering the direction of current flow.

The relay supports integrated monitoring, control, and communication functions, ensuring reliable operation in modern substation environments.

Siemens Reyrolle 5 7SR5111 Inputs and Outputs

4 CT + 4 VT + 9 BI + 8 BO

Additional variants available:
4 CT + 4 VT + 39 BI + 20 BO

Communication

1 × USB (front), RS485 (rear), and 2 × RJ45 / optical Ethernet interfaces

Housing

S6 enclosure (compact design)

Product Details

Number of function keys: 7
Number of LEDs: 28

Product Functions

Measured value detection (standard): Yes
Expanded measured values (min./max./mean): Yes
Switching statistics: Yes
Circuit breaker monitoring: Yes
Logic editor: Yes
Control: Yes
Fault recording (analog and digital): Yes
Sequence-of-events recorder: Yes
Monitoring: Yes
Number of parameter sets: 4
Parameter set switchover: Yes
Circuit breaker test: Yes

Protection Functions

Three-pole tripping: Yes
Undervoltage protection (ANSI 27): Yes
Directional power monitoring (ANSI 32): Yes
Undercurrent protection (ANSI 37): Yes
Unbalance protection (ANSI 46): Yes
Negative sequence overcurrent (ANSI 46): Yes
Phase rotation supervision (ANSI 47): Yes
Thermal overload protection (ANSI 49): Yes
Instantaneous overcurrent (ANSI 50/50N): Yes
Arc protection (ANSI AFD): Yes
Sensitive earth fault (ANSI 50Ns): Yes
Circuit breaker failure protection (ANSI 50BF): Yes
Time delayed overcurrent (ANSI 51/51N): Yes
Power factor (ANSI 55): Yes
Overvoltage protection (ANSI 59): Yes
Zero-sequence overvoltage (ANSI 59N): Yes
Directional overcurrent (ANSI 67): Yes
Directional earth fault protection (ANSI 67N): Yes
Directional sensitive earth fault (ANSI 67Ns): Yes
Trip circuit supervision (ANSI 74TC): Yes
Automatic reclosing (ANSI 79): Yes
Frequency protection (ANSI 81): Yes
ROCOF (ANSI 81R): Yes
Vector shift protection: Yes
Lockout (ANSI 86): Yes
Restricted earth fault protection (ANSI 87N): Yes
Fault locator: Yes
Inrush current detection: Yes
External trip: Yes

Supply Voltage

AC: 100 – 230 V
DC: 24 – 250 V
Type: AC/DC

Inputs / Outputs

Digital inputs: up to 9
Digital outputs: up to 8
Voltage inputs: up to 4
Current inputs: 4 CT

Applications

Directional overcurrent and earth fault protection in ring and mesh distribution networks

Benefits

Directional fault detection improves selectivity
Supports complex network topologies
Integrated monitoring and communication
Compact and flexible relay design