Description
GE Multilin URRHH High-Speed Contact Module
The GE Multilin URRHH is a high-density, high-speed digital output module designed for the Universal Relay (UR) platform. It is engineered to provide rapid contact closures for trip and control signals in utility and industrial power system protection applications.
Product Introduction
The URRHH Contact Module is a modular component that provides 8 high-speed Form-A (normally open) relay outputs. Within the GE Multilin UR architecture, the GE URRHH is specifically utilized for applications where sub-cycle operating times are required, such as breaker tripping or high-speed interlocking. The module features integrated monitoring to ensure the health of the output circuitry and the connected trip coils.
GE MULTLIN URRHH
Technical Specifications (Datasheet)
The URRHH module is characterized by its high-speed operation and robust current-carrying capacity:
| Parameter | Specification |
| Output Type | 8 High-Speed Form-A (Make) Contacts |
| Operating Time | < 4 ms (Typical) |
| Contact Material | Silver Alloy |
| Make and Carry | 30 A per ANSI C37.90 |
| Continuous Current | 8 A |
| Breaking Capacity | 0.2 A at 125/250 V DC (Inductive) |
| Isolation | 2 kV AC for 1 minute |
| Contact Monitoring | Optional Trip Circuit Monitoring (TCM) |
| Country of Origin | Canada (GE Grid Solutions) |
Technical Description & Features
- High-Speed Tripping: The solid-state/mechanical hybrid architecture allows for extremely fast response times, reducing the total fault clearing time of the protection system.
- Integrated Diagnostics: The module continuously monitors the continuity of the trip circuit (TCM) when the contact is open and monitors the current when closed.
- FlexLogic™ Integration: All 8 outputs are fully programmable using GE’s FlexLogic™ engine, allowing for complex logic-driven control actions.
- Modular Design: Compatible with all GE UR series chassis, including the G60, F60, L90, and B30 relays.
Installation & Usage Guidelines
- Placement: The module can be installed in any available I/O slot (typically slots B through F) of the UR chassis.
- Wiring: Use appropriate wire gauges for trip circuits to minimize voltage drop. Ensure that external surge suppression is used if switching highly inductive loads beyond the module’s rating.
- TCM Configuration: If using the Trip Circuit Monitoring feature, ensure the external resistor kit is installed according to the specific voltage of the control battery.
- Commissioning: Use the EnerVista software to perform a “Contact Test” during commissioning to verify wiring integrity and relay operation.
Recommended Similar Models
For different contact configurations or higher density I/O within the GE Multilin UR family, the following modules are recommended:
- UR4L: A 10-Form A contact output module for standard speed control applications.
- UR4C: A module providing 8 Form-C (changeover) contacts for general-purpose signaling.
- UR8HH: A variation of the high-speed module offering different contact configurations.
- URRCH: A digital module featuring a mix of high-speed inputs and outputs.
- UR6C: A contact module providing 16 Form-A outputs for high-density requirements.
