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Transmission Line Protection
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NR Electric's fast and reliable protection & control devices can provide reliable and accurate protection of HVAC transmission lines with voltage levels up to 1000kV. The devices offer interfaces for station bus and process bus respectively and supports IEC 61850-8-1 MMS, GOOSE, IEC 61850-9- 2 Sampling Value.
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PCS-902 Line Distance Protection
The PCS-902 provides comprehensive protection and control solutions for transmission lines with high-speed sub-cycle distance element. The PCS-902 is intended for application on overhead lines and underground cables with diverse voltage levels. These include series compensated, double- circuit, heavily loaded, weak in feed (WI), short and long lines. It can meet the requirements of single-pole or three- pole tripping; it also provides single and/or three-pole auto- reclosing functions. The PCS-902 is suitable for single and dual- breaker applications, providing optional dual C…
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PCS-902S Line Distance Relay
PCS-902S line distance relay integrates main and back-up protection functions, which is designed for overhead line, cables and hybrid transmission lines of various voltage levels and provides comprehensive protection and control solutions. With its flexibility and the powerful PCS-Studio configuration tool, PCS-902S offers future-oriented system solutions with high investment security and low operating costs.
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PCS-931 Line Differential Relay
The PCS-931 relay provides full-scheme current differential and distance protection solutions for transmission lines with high- speed sub-cycle distance element. As well, the pilot scheme of distance protection and earth fault protection are integrated to provide a complete protection solution for the transmission line. The PCS-931 is intended for application on overhead lines and underground cables with diverse voltage levels, including series compensated, double-circuit, heavily loaded, weak infeed (WI), short and long lines. The relay provides dual pilot channels used for redund…
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PCS-931S Line Differential Relay
PCS-931S line differential relay integrates main and back-up protection functions, which is designed for overhead line, cables and hybrid transmission lines of various voltage levels and provides comprehensive protection and control solutions. With its flexibility and the powerful PCS-Studio configuration tool, PCS-931S offers future-oriented system solutions with high investment security and low operating costs.
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PCS-924 Stub Differential Relay
In one-and-a-half breaker and ring breaker arrangements, the T-zone exists between two breakers and line/transformer feeders. The PCS-924 is designed to provide current differential protection, sum-of-current protection and feeder end fault protection for the T-zone. It provides three groups of CT input for direct connections to three terminal CTs. The disconnector is always installed in the feeder to facilitate the maintenance. The relay considers the different operating scenarios for the feeder with the disconnector. 3-terminal and 2-terminal current differential protections ar…
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PCS-924S Stub Differential Relay
PCS-924S is a fully numerical stub differential relay which is mainly designed for protecting T-zone of one and a half breakers arrangement. The protection function of PCS-924S comprises of current differential protection, phase overcurrent protection and feeder line end fault protection. With its flexibility and the powerful PCS-Studio configuration tool, PCS-924S offers future-oriented busbar solutions with high investment security and low operating costs.
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