UR 4DH GE Universal Relay

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UR 4DH

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Description - Universal Relay

UR 4DH

Providing the Universal Relay series with Digital I/O Communications and an array of digital inputs and outputs, General Electric Multilin's UR-4DH UR Module is invaluable for cutting out costly installation costs and extraneous connections. 

The T60 accounts for scalable hardware, allowing users to upgrade their modules through the hinged faceplate that allows access to the module compartment. After removing the screw that normally keeps the faceplate firmly closed, users can remove modules by applying pressure to the push pins and then gently sliding the module out. Users should note which slot the old module was in, as modules can only be replaced by modules of a similar type.

The Digital I/O Communications supplied by the module allow the relay to communicate with other relays and subation equipment digitally, removing the need for auxiliary connections and communication methods. This communication is both high-speed and secure, increasing the overall cyber security of the unit without it coming at the cost of communication rates. By including so many capabilities in one compact unit, the Universal Relays series reduces user costs over time. 

Digital outputs are provided by the module, which include types such as trip-rated Form A and Solid State Relay latching, and also Form-C outputs.

Parameter - Universal Relay

UR 4DH

Digital Outputs:Up to 64 outputs
Output Activation Speed:< 4 ms (for Form-A trip-rated outputs)
Input Voltage Range:24-250 V DC / 24-250 V AC
Output Contact Rating:7A @ 250V AC/DC
Communication Protocol:Internal UR Bus
Configuration Software:EnerVista UR
Operating Temperature:-40°C to +70°C (-40°F to +158°F)
Storage Temperature:-40°C to +85°C (-40°F to +185°F)
Humidity:5% to 95% non-condensing

FAQ - Universal Relay

UR 4DH

Q:What role does a GE UR-4DH I/O Module play in the Multilin UR Series of universal relay systems?

A:A UR-4DH is a Multilin digital I/O module. A Digital I/O module can provide the universal relay with up to 96 contact inputs. The voltage for these contact inputs can be up to 250V (utility voltage rating). In addition to these contact inputs, the digital I/O module provides the relay with up to 64 contact outputs. These outputs are used to control or monitor aux equipment in an application that is protective in nature. The digital cards included in the digital I/O module can vary. They can be Form-A, Form-C, Latching, Fast Form-C, or solid state relay (SSR). These cards vary based on if they come with current monitoring, DC voltage, or isolate inputs. The isolated inputs come with an auto burnish feature. If the digital outputs of the digital I/O module are mechanical in the way that they latch then they gain the application of being able to form stable interlocking applications to replace lockout relays and mechanical switches. If the I/O module is form-A, then the digital outputs have less than 4ms activation speeds in wet or in dry contacts.

Model Comparison - Universal Relay

Feature

UR-4DH (Standard Digital I/O)

UR-6DH (Enhanced Digital I/O)

UR-8BV (High-Density I/O)

Primary Function

General-purpose digital I/O expansion

High-density digital I/O with expanded contact inputs

Maximum density I/O for large-scale substation automation

Typical Max Inputs

Configurable contact inputs (up to 96 in system)

16 contact inputs (Form-C)

Up to 120 contact inputs (system-level)

Typical Max Outputs

Up to 64 configurable outputs

Limited/Varies by configuration

Up to 72 contact outputs (system-level)

Output Types Supported

Form-A, Form-C, SSR Latching

Form-C (standard)

Form-A, Form-C, Fast Form-C, SSR, Latching

Response Time (Output)

<4 ms (Form-A trip-rated)

Standard

<4 ms (Form-A)

Input Voltage Range

24-250V DC / 24-250V AC

Varies (specific to module config)

Up to 250V AC/DC

Environmental Rating

-40°C to +70°C

-40°C to +70°C (typical for UR series)

-40°C to +70°C (typical for UR series)