ODES Fast Trip Relays in Overseas Projects

In many overseas substations, protection schemes demand very fast breaker operation. When distance, differential, or busbar protection trips are issued, the auxiliary relay driving the breaker must operate in only a few milliseconds to coordinate with protection logic and prevent fault escalation.

The GRUS-11H fast trip relay is engineered for these high-speed applications. It ensures reliable breaker tripping with an operating time ≤5 ms and return ≤15 ms, while providing redundant output options to meet the requirements of EPCs and utilities worldwide.

Core Features

• Ultra-fast operation: trip in ≤5 ms, reset in ≤15 ms, supporting critical protection functions.

• Dual independent circuits: one housing can contain two coils, each with 4×c/o outputs—ideal for main/backup protection or dual-channel schemes.

• Clear panel indication: ACT1/ACT2 LEDs display the operating status of each coil for accurate SOE (Sequence of Events) logging.

• Coil options: available for 110 / 125 / 220 VDC.

• Robust contact capacity: designed for breaker trip duty with tested EMC and environmental resilience.

• Standards compliance: type-tested to IEC 60255 (relay requirements), IEC 61000 (EMC).

• CE certified: approved for international projects and tender submissions.

Application Example: Southeast Asia 115 kV Booster Station

• Configuration: GRUS-11H-8R/110 VDC deployed to drive fast trip circuits.

• Scheme: one coil connected to the main protection device, the second coil to backup protection.

• Result: ensured redundant tripping capability with consistent sub-5 ms operation, meeting EPC and utility acceptance criteria.

Engineering Value

• Protection coordination: ensures high-speed relays do not become a bottleneck in critical protection schemes.

• Redundancy built-in: dual-coil design allows parallel handling of main and backup exits, reducing risk of single-point failure.

• Operational clarity: separate indicators simplify commissioning and fault recording.

• International fit: CE certification and adherence to IEC testing guarantee easy acceptance across global projects.

In demanding protection schemes where every millisecond matters, the GRUS-11H fast trip relay provides reliable and internationally compliant breaker drive capability. Its fast operation, dual-circuit redundancy, and global acceptance make it a practical choice for EPCs integrating medium- and high-voltage substations overseas.

Working on substations or plants where high-speed protection trips are required? Ensure your breakers are driven by fast trip relays that meet IEC standards and CE requirements.

• Request datasheets and IEC/CE certificates.

• Consult with ODES engineers to configure single or dual-coil schemes for your project.

• Deliver protection performance your EPC partners and utilities can trust.

Contact :📩 tonyzhang@odes.com.cn

Or visit: 🌐 https://www.odes-electric.com/

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