Siemens SIPROTEC 5 7SA86 Distance Protection Relay
The SIPROTEC 7SA86 Distance Protection Relay from Siemens is a high-performance solution for reliable protection of transmission lines and substations in modern power systems.Featuring 4xI/4xV inputs, expandable modular hardware, and ultra-fast 3-pole tripping (as low as 9 ms), it ensures precise fault detection and dependable operation for utilities, industrial grids, and power plants
Technical Specifications
Main function: Distance protection
Interoperability: SIPROTEC 5 and SIPROTEC 4 line protection devices
Tripping: 3-pole, minimum tripping time 9 ms
Inputs/Outputs: 12 standard variants with 4/4 or 8/8 CT/VT, 5–31 binary inputs, 8–46 binary outputs
Hardware structure: Flexible I/O configuration within SIPROTEC 5 modular system
Housing width: 1/3 × 19 inches to 2/1 × 19 inches
Applications: Short-circuit detection and selective 3-pole tripping, ground fault detection, backup protection for differential devices, serial communication, PMU
Interoperability: SIPROTEC 5 and SIPROTEC 4 line protection devices
Tripping: 3-pole, minimum tripping time 9 ms
Inputs/Outputs: 12 standard variants with 4/4 or 8/8 CT/VT, 5–31 binary inputs, 8–46 binary outputs
Hardware structure: Flexible I/O configuration within SIPROTEC 5 modular system
Housing width: 1/3 × 19 inches to 2/1 × 19 inches
Applications: Short-circuit detection and selective 3-pole tripping, ground fault detection, backup protection for differential devices, serial communication, PMU
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