ABB HIEE205010R0003 UNS3020A-Z V1 Ground Fault Relay

Description

The ABB HIEE205010R0003 (also designated as the UNS3020A-Z V1 Ground Fault Relay) is a specialized protection and insulation monitoring device engineered for industrial power distribution and excitation networks. This hardware unit incorporates an adjustable trip mechanism configurable via front-mounted dip switches to manage specific electrical protection parameters. It features comprehensive diagnostic signaling through up to four integrated LEDs that provide real-time indicators for active protection timing, trip logs, sensor connection faults, and circuit breaker status. Designed for continuous monitoring, the status memory circuit retains trip information for up to 48 hours of inactivity without requiring external auxiliary power, providing critical diagnostic availability during circuit breaker isolation sequences.

Features

• Front-accessible dip switches for direct configuration and adjustment of the trip unit parameters.
• Up to four diagnostic status LEDs providing dedicated signaling for individual protection functions.
• Multi-state LED signaling indicating protection timing, pre-alarm status for protection L, and tripped states.
• Automated fault detection for connected current sensors and opening solenoid continuity failures.
• Non-volatile trip indication memory retaining fault status for 48 hours of inactivity without auxiliary power.
• Auxiliary testing compatibility via connection ports for PR030/B battery units, PR010/T test sets, or BT030 wireless units.

Applications

• Ground fault protection and isolation tracking in industrial circuit breaker networks.
• Status monitoring and pre-alarm management in automated power distribution systems.
• Excitation system isolation control and protection logging in generation plants.

Technical Specifications

Installation Guidelines

• Ensure all main circuit breaker contacts are open and primary power distribution lines are fully isolated before installing the unit.
• Mount the relay securely within the designated panel space, ensuring clear visibility and access to the front dip switches.
• Connect all current sensors and opening solenoid lines according to the certified terminal schematic to prevent connection failure alarms.
• For diagnostic interrogation after a 48-hour period of inactivity, connect an approved PR030/B battery module or a BT030 wireless communication interface to the specified testing port.