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GARD 8000 - Distance Protection Module
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The Distance Protection Module in the GARD 8000® System is a full-featured Line Distance Relay with all protection functions required for a complete line protection terminal. It can be used as a stand-alone Main protection, to provide channel independent back-up for the current differential protection, or operate in parallel with the Current Differential Module, providing an independent, different, measuring principle.
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- Plug-in Line Distance Protection in the GARD 8000® Protective Relay and Communications System
- Use as a stand-alone Line Distance Relay or as a communications independent back-up for a GARD 8000® Current Differential Protection Module
- Stepped Distance Protection or Distance Pilot Protection using the GARD 8000® System\'s communication interfaces which include audiotone, digital, fiber optic, or Power Line Carrier
- Eliminates the need for external teleprotection channel devices for pilot communications
- Eliminates relay-to-teleprotection wiring
- Simplifies pilot protection system commissioning and configuration
- 3U or 6U chassis depending on number of functional modules included
- Dual breaker application by combining the distance relay with breaker modules
- Synchrophasor measurement
- Supports NERC/FERC security standards
- 4 Zones, all 4 reversible
- Phase-phase and phase-ground mho characteristic
- Selectable quadrilateral characteristic
- Built-in logic for permissive (PUTT, POTT, DCUB) and blocking (DCB) pilot schemes
- Out-of-step block and trip
- Loss-of-potential block
- High-set and inverse time overcurrent elements
- Breaker failure protection
- Reclosing and synch check
- Under- and overvoltage elements
- Under-, over-, and rate-of-change frequency elements
- Accurate Fault Locator
- Digital fault records directly in COMTRADE
- Optional Single Pole Trip Logic
- 10 Year Warranty