GE-UR1HH Power Supply Module

Description

Technical background

High‑range input supports 100‑240VAC and 125‑250VDC dual‑mode power source, rated output power 35W, galvanic isolation between input and output circuits. Built‑in fuse, over‑voltage, over‑current and over‑temperature protection. Module status can be read via EnerVista software for remote diagnosis. Supports dual‑module redundant power configuration for high‑reliability bay protection scenarios. Operating ambient:‑20℃~+70℃; storage‑40℃~+85℃; humidity 5‑95% non‑condensing; IP20 cabinet‑mount only. Compatibility reminder: Only for UR series chassis. Do not mix with low‑range UR1LH module randomly; wrong model will cause abnormal power‑supply startup.

Physical construction

Rear plug‑in module inside UR relay chassis, accessible after opening front hinged cover. Metal housing with internal fuse component, backplane connector transmits power to whole chassis. Part‑number UR1HH marked on module label. Internal PCB uses conformal coating for anti‑dust performance in substation cabinet environment.

Real‑world site deployment

Installed inside substation and power‑plant protection cabinets. It supplies working power for UR‑series protection relays used for transformer, feeder and generator protection. Module failure will lead to relay complete power‑off, protection and measurement functions all fail. When configured in dual‑redundant mode, one faulty unit will not take down the whole relay system. After replacement, confirm input voltage matches module specification, check backplane contact status, verify relay whole‑machine startup and communication status before putting into service.

Installation & maintenance notes

Cut off control power before replacement, apply anti‑static protection during handling. Avoid scratching backplane connector pins. Keep cabinet ventilation unobstructed. Long‑term over‑temperature will accelerate internal component aging. Do not do on‑site component‑level repair. Replace full module under permanent hardware damage.

Typical on‑site fault phenomena

1. Relay no power‑on: Check field AC/DC input voltage; inspect module internal fuse; re‑seat module.
2. Random relay restart: Check fluctuation of field control power source; verify terminal wiring tightness.
3. Module over‑temperature alarm: Confirm cabinet heat dissipation condition, eliminate surrounding heat‑source influence.
4. Redundant power‑supply mismatch alarm: Check model consistency of two power modules, verify firmware baseline.
5.