Siemens SIPROTEC 7SD80 Line Differential Protection Relay.
The Siemens SIPROTEC 7SD80 is a high-performance line differential protection relay from the SIPROTEC 4 Compact series. Additionally, it’s designed for reliable protection of overhead lines and cables in MV/HV industrial and utility networks. Featuring 4xI 0/3xV inputs and an advanced phase comparison algorithm. Moreover, the SIPROTEC 7SD80 ensures fast and accurate fault detection. However, it minimizes downtime and enhances grid stability.
Compact and versatile, this relay is ideal for a variety of applications, including industrial plants, utility substations, and EPC projects. Additionally, it supports all common line configurations and provides seamless integration with existing control and monitoring systems.
Available from trusted distributors in Mumbai, the SIPROTEC 7SD80 combines genuine Siemens quality. Specially, with local support and fast delivery. Additionally, it makes it the go-to solution for engineers and electrical consultants seeking reliable line differential protection.
Hardware
- 4 current transformers
- 0/3 voltage transformers
- 3/5/7 binary inputs (thresholds configurable using software)
- 5/8 binary outputs (2 changeover)
- 1 life contact
- Plug-in current and voltage terminals.
Benefits of SIPROTEC 7SD80 Protection Relay
- Integrated interfaces for exchanging differential protection data (fiber-optic up to 24 km / 15 miles and/or two-wire copper cables up to 20 km / 12 miles)
- Transmission of a circuit-breaker intertripping signal. And, 16 further binary signals to the opposite end.
- Secondary current transformer values (1 A / 5 A) settable using DIGSI
- 9 programmable function keys
- 6-line display
- Buffer battery is exchangeable from the front
- USB front port
- 2 additional communication ports
- Integrated switch for low-cost and, additionally, redundant optical Ethernet rings
- Ethernet redundancy protocol RSTP for the highest availability
- Relay-to-relay communication through Ethernet with IEC 61850 GOOSE
Protection functions
- Differential protection, line 87L
- 3I0 differential protection 87N L
- Ground-fault differential protection for systems. Especially with resonant or isolated neutral 87Ns L
- Definite time-overcurrent protection with delay for phase 50 TD (3 stages)
- Definite time-overcurrent protection with delay for earth 50N TD (3 stages)
- Inverse time-overcurrent protection (phase) 51
- Inverse time-overcurrent protection (ground) 51N
- Circuit-breaker failure protection 50BF
- Trip-circuit supervision 74TC
- Lockout 86
- Circuit-breaker intertripping scheme 85 DT
- External trip initiation
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