Description
Overview
The HIEE205010R0001 / UNS3020A‑Z,V1 ground fault relay is a UNITROL 5000 protection module engineered to detect and isolate ground‑fault conditions in generator excitation and industrial power systems. Its rugged construction, fast response characteristics, and high‑accuracy sensing make it suitable for environments where electrical protection and operational continuity are critical.
Technical Specifications
General Information
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Model: HIEE205010R0001 / UNS3020A‑Z,V1
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Manufacturer: ABB
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Product Type: Ground Fault Relay
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Product Range: UNITROL® 5000
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System Compatibility: DCS / Excitation Protection
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Operating Status: Active
Mechanical Data
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Dimensions: 44 × 17 × 10 cm
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Weight: 5.2 kg
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Enclosure designed for panel‑mount installation
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Industrial‑grade materials for long‑term durability
Electrical & Functional Characteristics
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High‑sensitivity ground‑fault detection for excitation systems
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Solid‑state relay technology for rapid fault isolation
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Designed to prevent equipment damage by responding to abnormal current paths
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Stable performance under fluctuating load and environmental conditions
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Supports integration into multi‑layer protection schemes
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Suitable for low‑voltage and medium‑voltage excitation applications
Environmental Ratings
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Built to withstand harsh industrial environments
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Resistant to electrical noise, vibration, and temperature variation
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Designed for continuous operation in power generation facilities
Integration & Connectivity
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Compatible with UNITROL 5000 excitation controllers
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Standard terminal connections for simplified wiring
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Supports retrofit installation in existing protection panels
Diagnostics & Maintenance
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On‑board indicators for fault and operational status
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Comprehensive diagnostic functions for troubleshooting
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Supported by ABB documentation and engineering tools
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Modular design reduces downtime during replacement
Application Scenarios
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Generator excitation ground‑fault protection
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UNITROL 5000 system upgrades and expansions
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Industrial power systems requiring fast and accurate fault detection
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Protection panels in power plants, utilities, and heavy‑industry facilities
FAQ
Q: Is the HIEE205010R0001 / UNS3020A‑Z,V1 compatible with older UNITROL protection systems? A: It is designed for UNITROL 5000 but can be integrated into some earlier systems depending on wiring and protection scheme requirements.
Q: What type of faults does this relay detect? A: It detects ground‑fault conditions within excitation circuits and associated power paths.
Q: Does the relay require periodic calibration? A: Calibration intervals depend on system requirements; ABB provides guidelines for verification and testing.
