SIPROTEC Compact 7SJ80/7SK80 is a multifunctional protection device that can be used for line protection in medium-voltage and low-voltage networks with direct neutral grounding, low-resistance grounding, ungrounded and grounded neutral compensation devices, and can also be used as an independent and complete transformer backup protection. The protection has the latest developed hardware and has the highest reliability in its main functions. The on-site operating experience of 1,000,000 SIPROTEC protections has laid the foundation for its high reliability. The protection provides many features that can flexibly respond to power system requirements and effectively save investment costs. For example, replaceable interfaces, flexible protection functions, and integrated programmable logic functions (CFC).
The SIPROTEC Compact series from Siemens is a multifunction protection unit used in power system automation. This manual covers the 7SJ80 and 7SK80 models, describing their features, interfaces, and configuration options.
It includes details on power supply options, earthing, communication protocols such as IEC 61850, PROFIBUS DP, MODBUS RTU, and DNP 3.0, as well as wiring diagrams and installation guidelines.
| Power supply voltage options | DC 24 V, 48 V, 6‑110 V, 125 V, 220 V, 250 V; AC 115 V, 230 V |
|---|---|
| Additional power supply options | DC 6‑110 V, 125 V, 220 V, 250 V; AC 115 V, AC 230 V |
| IEC 61850 communication speed | 100 Mbit |
| Modbus interface | RS485 |
| PROFIBUS DP interface | RS485 |
| DNP 3.0 interface | RS485 |