ODES Lockout Relays in Overseas Projects

In protection systems, the quality of trip blocking and reset determines the safety boundary after a fault and defines the discipline of operations. A lockout relay provides the necessary functions to hold the trip, prevent reclosing, and enforce structured reset. For overseas projects, integrators and EPCs expect equipment that combines reliable performance with CE certification and alignment to IEC standards.

The GRUS-11TA lockout relay is designed specifically for protection trip outputs and breaker contact expansion. It ensures that once protection has operated, the trip state is securely latched, and reset follows a controlled process.

Core Features

• Self-holding and interlocked reset: clear SET/RESET operation, preventing accidental reclosing.

• Local/remote reset options: adaptable to DCS or remote maintenance requirements.

• Panel indication: front-face indicators for immediate status recognition.

• Multiple contacts: one device provides 8 changeover outputs, simplifying signal distribution and system interlocking.

• Flexible coil options: 110 / 125 / 220 VDC.

• Standards compliance: tested to IEC 60255 (general requirements for relays), IEC 61000 (EMC).

• CE certified: suitable for international bids and type-test file submission.

Application Example: Overseas Deployment

• Saudi Arabia, 132 kV substation: GRUS-11TA-8R configured as lockout units within the protection scheme.

• Function: after a trip, the relay maintained the block, prevented mis-closing, and supported clear local/remote reset.

• Result: improved operational safety, ensured system recovery procedures matched international EPC and O&M practices.

Engineering Value

• Operational safety: no unintentional breaker close after protection trips.

• Clear reset procedure: supports both on-site operation and integration with control systems.

• Signal flexibility: 8 changeover contacts allow parallel signaling to interlocks, alarms, and SCADA without external expansion.

• Global acceptance: CE marking and IEC compliance ensure easy adoption in overseas projects.

Lockout relays are not just accessories—they are critical safety components that define post-fault behavior and operational discipline. The GRUS-11TA provides reliable self-holding, interlocked reset, and international compliance, making it a trusted choice for overseas substation and plant projects.

Planning protection and interlocking schemes for overseas projects? Ensure your trip outputs are secured with lockout relays designed to IEC standards and CE certified.

• Request technical datasheets and IEC/CE certificates.

• Discuss with our engineers how to integrate lockout relays into your specific panel schemes.

• Safeguard your protection systems with devices trusted in projects worldwide.

Contact: tonyzhang@odes.com.cn

Or Visit: https://www.odes-electric.com/

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