About this document
421-4-5 GS by sparkCE is a document available to read on EtoBox.
The document specifies requirements for a microprocessor-based relay that provides protection, monitoring, control, fault locating, and automation functions. It requires five zones of phase and ground distance protection, overcurrent protection, voltage and frequency protection, breaker failure logic, auto-reclosing control, and synchronism check. It also requires monitoring functions like event recording, fault locating, breaker monitoring, and battery monitoring. The relay must support automation function
- Author
- sparkCE
- Language
- EN