PRODUCTS |
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 TEST EQUIPMENT
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MAINTENANCE and CONTRUCTION |
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ELECTRICAL and MECHANICAL INSPECTION |
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PROTECTION RELAY, PANEL METER and INSTRUMENTS |
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GR SERIES RELAY
Distribution Range GRD 100
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Distribution Range GRD 100 is a series of multi-function protection relays, providing a comprehensive range of protection functions for distribution power systems, or alternatively acting as back-up protection for transmission system.
There are 5 cub groups within the GRD 100 Series
systems. There are 5 sub-groups within the GRD100 series. |
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GRD110: Overcurrent protection for phase and earth faults.
- GRD130: Over-voltage and under-voltage protection
- GRD140: Directional overcurrent relay with auto-reclose.
- GRD150: Feeder management system, combining protection and control functions and featuring a large mimic displa
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Distance Protection GRZ 100
GRZ100 is a full-scheme, high-speed, numerical distance relay for application to transmission lines in solidly earthed networks.
This well-proven product provides extremely high performance through its advanced numeric design, with full-scheme, phase-selective distance protection giving typically one-cycle operating times.
Command protection schemes, back-up overcurrent, switch-on-to-fault and stub protections, out-of-step tripping and circuit breaker fail protection complete a powerful. |
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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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