Product Overview

The GE Multilin UR 6EV is a high-performance, combination digital I/O expansion module engineered for the Universal Relay (UR) platform. This module provides a balanced interface for industrial control systems, featuring six isolated digital inputs and six isolated Form C relay outputs. It is designed to bridge the gap between the protective relay logic and field-level equipment, such as circuit breaker trip coils, status switches, and auxiliary signaling devices.

By utilizing high-grade galvanic isolation for both inputs and outputs, the UR 6EV protects the central processing unit from electrical transients and ground loops. Its robust mechanical architecture is specifically designed for integration into 19-inch rack-mounted UR chassis, making it a staple in substation automation and large-scale industrial power management.

Technical Specifications

• Manufacturer: General Electric (GE Multilin)

• Model Number: UR 6EV

• Series: Universal Relay (UR)

• Input Configuration: 6 Isolated Digital Inputs

• Output Configuration: 6 Isolated Form C (SPDT) Relay Outputs

• Operating Voltage: 24V DC nominal (Logic side)

• Contact Rating: Industrial grade for high-voltage switching

• Mounting Type: Internal plug-in for UR-series 19" racks

• Operating Temperature: -40°C to +85°C

• Dimensions: 16.3 cm x 4.2 cm x 21 cm

• Weight: 0.66 kg

Core Technical Characteristics

• Dual-Functionality I/O: The UR 6EV combines sensing and control capabilities on a single card, optimizing slot usage within the UR chassis by providing an even split of six inputs and six outputs.

• Form C Relay Outputs: The module features Single Pole Double Throw (SPDT) relay outputs. These Form C contacts offer both normally open (NO) and normally closed (NC) terminals, providing maximum flexibility for interlocking and control logic.

• Superior Signal Isolation: Every input and output channel is individually isolated, preventing noise migration and protecting the relay’s internal bus from high-voltage spikes originating in the field.

• Real-Time Diagnostic Feedback: Integrated front-panel status indicators allow technicians to verify the state of each input and output at a glance, significantly speeding up commissioning and fault isolation.

• Hardened Environmental Design: Built to meet and exceed utility-grade standards, the UR 6EV maintains operational accuracy in environments with extreme temperatures and high levels of electromagnetic interference (EMI).

• Plug-and-Play Integration: Once inserted into a compatible UR rack, the module is automatically identified by the system software, allowing for easy configuration of logic mappings and debouncing timers.

Industrial Applications

The GE UR 6EV is widely utilized in power protection and automation frameworks, including:

• Circuit breaker control and position monitoring.

• Transformer tap-changer control and alarm signaling.

• Substation automation interlocking schemes.

• Motor control center (MCC) status and command interfacing.

• General-purpose discrete logic for Distributed Control Systems (DCS).