Citra Wahana Sekar Buana


Protection & Control Systems


Line Diffrential Protection GRL 100

GGRL100 provides high-speed, phase-segregated line differential protection, with communication over dedicated optical fibre links, 64 kbit/s multiplexed communication channels or microwave links.  The relay can be applied in various EHV/HV network configurations, including  overhead lines or underground cables, two-terminal or three-terminal lines,  short  or long distance lines.  

The main protection is supported by a complete range of back- up protections,auto-reclosing with check-synchronising and enhancements such as highly  accurate fault location, metering, data recording and communications.

A GPS-  synchronised model  is now available, designed for use over SDH/SONET  communication networks in which propagation  delays may differ between the   send and receive paths.

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