Siemens Siprotec 4 SIPROTEC 7SA61 Protection Relay

Siemens Siprotec 4 SIPROTEC 7SA61 Protection Relay – 4xI 4xV, text display, 1-/3-pole tripping

The Siemens SIPROTEC 7SA61 Protection Relay is a high-performance numerical distance protection relay. Specifically, it is designed for reliable substation and transmission line protection. Equipped with 4xI and 4xV inputs and a clear text display. Additionally, it provides precise monitoring and fast, selective 1-/3-pole tripping for a wide range of electrical systems.

Moreover, trusted by industry professionals, the SIPROTEC 7SA61 Protection Relay ensures high-speed fault detection. Consequently, impedance-based protection and advanced teleprotection capabilities. Specifically, make it ideal for substations and transmission networks across all voltage levels.

Available in Mumbai through authorized suppliers and distributors. Additionally, this relay guarantees reliable performance, fast delivery, and seamless integration into your existing electrical infrastructure. Moreover, perfect for engineers, contractors, and facility managers seeking top-quality distance protection solutions.

Protection Functions

• Non-switched distance protection with 6 measuring systems (21/21N)
• High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
• Earth-fault detection in isolated and resonant-earthed networks
• Tele (pilot) protection (85)
• Fault locator (FL)
• Power-swing detection/tripping (68/68T)
• Phase-overcurrent protection (50/51)
• Switch-onto-fault protection(50HS)
• STUB bus overcurrent protection (50STUB)
• Overvoltage/undervoltage protection(59/27)
• Over/underfrequency protection (81O/U)
• Auto-reclosure (79)
• Synchro-check (25)
• Breaker failure protection (50BF)
• Thermal overload protection (49)

Control Functions

• Commands for control of c.b. and isolators

Monitoring Functions

• Trip circuit supervision (74TC)
• Self-supervision of the relay
• Measured-value supervision
• Event logging
• Fault logging
• Oscillographic fault recording
• Switching statistics

Siemens SIPROTEC 4 leads the way in integrating protection, control, measurement, and automation functions in one device. The homogenous system platform, the unique DIGSI 4 engineering program, and extensive experience of more than a million successfully operating devices in the field worldwide