Siemens SIPROTEC 5 7SA87 Distance Protection Relay
The SIPROTEC 5 7SA87 Distance Protection Relay is a high-performance solution designed for reliable power system protection. Built with Siemens’ advanced SIPROTEC 5 technology, this relay combines 4x current inputs, 4x voltage inputs, expandable hardware, and 1-/3-pole fast tripping capability, making it ideal for modern transmission and distribution networks.
Engineered for precision, scalability, and reliability, the SIPROTEC 7SA87 ensures optimal distance protection, quick fault detection, and reduced downtime in power systems. Its modular design allows easy adaptation to diverse grid requirements, while fast tripping technology provides enhanced operational safety.
Main function:
- Distance protection
- Interoperability of SIPROTEC 5 and SIPROTEC 4 line protection devices
Tripping:
- 1-pole and 3-pole, minimum tripping time: 9 ms
Inputs and outputs:
12 predefined standard variants with
- 4/4 or 8/8 current transformers / voltage transformers,
- 5 to 31 binary inputs,
- 8 to 46 binary outputs
Hardware flexibility:
- Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system
Width of housing:
- 1/3 × 19 inches to 2/1 × 19 inches
As standard:
- Conformal Coating
Application
- Detection and selective 1- and 3-pole tripping of short circuits in electrical equipment of star networks, lines with infeed at one or two ends, parallel lines and open-circuited or closed ring systems of all voltage levels
- Detection of ground faults in isolated or arc-suppression-coil-ground power systems in star, ring, or meshed arrangement
- Backup protection for differential protection devices of all kind for lines, transformers, generators, motors, and busbars
- Serial protection communication with SIPROTEC 5 and SIPROTEC 4 devices over different distances and physical media, such as optical fiber, two-wire connections, and communication networks
- Phasor Measurement Unit (PMU)
For industries, utilities, and EPC contractors in Mumbai and across India, this relay is a trusted choice for safeguarding transmission lines and critical infrastructure. As an authorized supplier, we provide genuine Siemens SIPROTEC relays with technical support and competitive pricing.
Choose the SIPROTEC 5 7SA87 Distance Protection Relay to ensure dependable protection, flexible configuration, and long-term performance for your power systems.
Reviews
There are no reviews yet.