Description
GE UR6DH Product Description
Product Overview
The GE UR6DH is a 24-channel digital input module built for the GE Multilin UR (Universal Relay) series protection and control platform. It acts as a discrete signal expansion interface for utility and industrial protection relays, bringing field switch, breaker and contact status signals into the core protection system.
This module accepts both AC/DC wet-contact and dry-contact inputs, and uses optical isolation to separate field wiring from the relay backplane. It plugs directly into standard UR series relay slots and supports hot-swap installation, allowing on-site maintenance and I/O expansion without full system shutdown. With wide temperature tolerance and rugged industrial construction, it delivers stable, dependable performance in harsh substation and heavy industrial power environments.
GE UR6DH
Core Product Features
- 24 independent input channels in one standard UR slot deliver high-density discrete signal acquisition for protection and interlock logic.
- Wide input range supports 17–300 V DC and 20–265 V AC wet contacts, plus dry-contact operation to match diverse field devices.
- Programmable input threshold per channel allows fine tuning to match different field voltage levels and electrical noise margins.
- 2 kV optical isolation between field circuits and system backplane blocks ground loops and voltage surges, protecting sensitive relay electronics.
- Fast input scan rate ensures rapid status updates for time-critical protection and safety interlock functions.
- Per-channel front-panel LEDs provide instant visual input state indication for quick on-site diagnostics and wiring verification.
- Hot-swappable design allows insertion and removal without powering down the host relay, minimizing system downtime during maintenance.
- Natively compatible with UR series communication stacks including IEC 61850 GOOSE, DNP3 and Modbus RTU/TCP.
Technical Specifications
| Item | Specification |
|---|---|
| Official Model | UR6DH |
| Product Type | 24-Channel Digital Input Module |
| Compatible Platform | GE Multilin UR Series Universal Relay Platform |
| Input Channels | 24 independent, optically isolated channels |
| Input Voltage Range | 17 – 300 V DC / 20 – 265 V AC (wet contact); dry contact supported |
| Input Threshold | Programmable per channel (typical 10 V DC) |
| Isolation Rating | 2 kV optical isolation, channel-to-backplane |
| Supported Protocols | IEC 61850 GOOSE, DNP3, Modbus RTU/TCP |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +90°C |
| Humidity | 5% – 95% RH, non-condensing |
| Mounting | UR standard slot, hot-swappable |
| Compliance | IEC 61850, IEEE C37.90, UL 508, CE |
GE UR6DH
Application Fields
- Breaker, disconnect switch and auxiliary contact status monitoring in transmission and distribution substations
- Generator and transformer protection system discrete signal interfacing in thermal and renewable power plants
- Industrial plant power distribution and motor control center status feedback
- Safety interlock and sequence logic input acquisition for process and utility automation
- Legacy electromechanical and solid-state relay system I/O expansion and retrofit
- Substation automation and SCADA remote status monitoring systems
Related Model Recommendations
- UR6DO: 24-channel digital output module from the same UR series, paired with UR6DH for complete discrete control and monitoring loops.
- UR6AH: Analog input module for the UR platform, complementing digital inputs for integrated measurement and protection schemes.
- GE G60 Generator Protection Relay: UR-series flagship relay that accommodates UR6DH modules for comprehensive generator protection and control.
- GE F650 Feeder Protection Relay: UR-platform feeder relay that supports UR6DH I/O expansion for distribution automation applications.
