Siemens SIPROTEC Compact 7SJ80 Multifunction Protection Relay User Manual

About this manual

The document describes the Siemens SIPROTEC Compact 7SJ80 multifunction protection relay, designed for line/feeder protection of high and medium-voltage networks. It supports various neutral point configurations including grounded, low-resistance grounded, isolated, or compensated systems. The relay also functions effectively as a backup relay for transformer differential protection.

What's inside

• Function overview
• Application
• Protection functions
• Control functions/programmable logic
• Monitoring functions
• Communication interfaces
• Hardware specifications

Frequently asked questions

What is the physical height of the relay housing?

The relay housing has a height of 244 mm (9.61 inches).

How many binary inputs does the relay provide?

The relay provides 3 to 7 binary inputs with configurable thresholds.

How many binary outputs are available on the relay?

The relay provides 5 to 8 binary outputs featuring 2 changeover contacts.