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GE Multilin UR-RHH Power Supply Module

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  • Part Number: URRHH
  • Brand: General Electric
  • Type: Power Supply Module
  • Dimensions: 8.2x12.2x6cm
  • Country of Origin: USA
  • Barcode: 8537101190

Additional Specifications

Color / Pattern
  • Black
Tags: DCS , GENERAL ELECTRIC , Power Supply Module

Descripción del Producto

GE UR‑RHH Power Supply Module

The GE Multilin UR RHH is the high‑voltage power‑supply option for Universal Relay (UR) systems, delivering regulated power to the relay chassis and providing auxiliary power for dry‑contact inputs. It supports both DC and AC sources depending on the selected voltage range and includes internal health‑monitoring features integrated with UR self‑diagnostics.

Hardware Specifications

Parameter Specification
Model UR‑RHH
Brand GE Multilin
Origin Markham, Ontario, Canada
Weight approx. 2 lb 2 oz
Dimensions 6.5 in × 6.5 in × 1.75 in
Voltage Ranges LO: 24–48 V DC (nominal) • HI: 125–250 V DC / 100–240 V AC
Internal Fuse 4 A / 250 V
Software Support EnerVista UR
Contact Power Supports dry‑contact input powering
Redundancy Optional redundant‑supply configuration

Functional Description

The UR RHH module supplies operating power to UR‑series relays and provides auxiliary power for dry‑contact inputs. It is available in low‑range (LO) and high‑range (HI) versions:

  • LO Range (24–48 V DC) — DC‑only applications
  • HI Range (125–250 V DC / 100–240 V AC) — AC or DC applications

The module includes internal protection via a 4‑amp fuse, and its health is continuously monitored by the relay’s built‑in diagnostic system. If a critical failure is detected, the relay automatically de‑energizes the power supply and indicates the fault through faceplate LEDs.

Faceplate LED Indicators

  • CONTINUOUS ON — Normal operation
  • ON/OFF CYCLING — Warning or minor fault condition
  • OFF — Power supply not energized or critical failure

These LED states allow quick visual assessment of module health without requiring software access.

Comparison: UR‑RHH vs. UR‑SH (Second‑Generation Power Supply)

Feature UR‑RHH UR‑SH
Output Power 35 W 45 W
Capacitors 27 electrolytic 1 electrolytic
Isolation Voltage 2000 V AC 2300 V AC
Heat Generation Same as UR‑SH Same as UR‑RHH
Voltage Range 125–250 V DC / 100–240 V AC Similar high‑voltage range

Frequently Asked Questions

Q: What makes the UR‑RHH unique in UR systems? A: It supports both AC and DC high‑voltage ranges, provides 35 W output power, and includes extensive internal diagnostics and LED health indicators.

Q: How does the UR‑RHH differ from the UR‑SH? A: UR‑SH offers higher output power (45 W), fewer capacitors, and higher isolation voltage, but both modules operate within similar thermal limits.

Q: Does the UR‑RHH power dry‑contact inputs? A: Yes. It supplies auxiliary power for dry‑contact input circuits.

Field Installation Guidelines

  • Ensure correct voltage‑range selection (LO vs. HI) before installation.
  • Maintain separation between AC and DC wiring to reduce noise coupling.
  • Verify faceplate LED status after energizing the relay.
  • Bond shielded cables at a single termination point to avoid ground‑loop formation.
  • Replace the internal fuse only with a 4 A / 250 V rated equivalent.
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