GE UR-8LH CT/VT module

GE UR-8LH CT/VT module

ABOUT THE UR-8LH

General Electric Multilin’s UR-8LH is a CT/VT module designed for the Universal Relay series. The module can be used to replace current modules, upgrade current modules, or provide new capabilities to Universal Relays that did not originally come with the given module. This particular module supplies the relay with 4CT/4VT with enhanced diagnostics.

Main Functions

The UR-8LH module provides interfaces to four current transformers (CTs) and four voltage transformers (VTs) for the relay, enabling it to receive and process current and voltage signals from the power system. The module also features enhanced diagnostic capabilities that verify the integrity of analogue signals to ensure system reliability. Through the use of advanced algorithms, the UR-8LH module can detect faults in analogue measurement channels and issue alarms to prevent protection functions from malfunctioning due to faults.

Signal Processing Capability

The CT/VT transformer in the UR-8LH module scales current and voltage values down to quantities that can be handled by the relay, allowing the relay to calculate ratio values related to current and voltage. This feature is critical for identifying hazardous voltage and current conditions within a system and establishing an appropriate response.

Data Viewing and Configuration

Data from the UR-8LH module can be viewed via the front panel LCD display or on a computer running the EnerVista UR software program, which not only allows the user to view module data, but also supports configuration of the CT/VT module to meet the unique needs of different user systems.

Interfaces and Connections

Industrial Ethernet Interface: The UR-8LH module has an industrial Ethernet interface for easy integration with modern process automation systems.

Open connection: Using MODBUS technology protocol/IP protocol, it realises open connection with modern control systems and supports access from multiple controllers.

Technical features and advantages

Ruggedised and Integrated Security: The UR-8LH module's ruggedised design and integrated advanced security features make it ideal for use in difficult applications such as wind turbines, remote SCADA nodes in desert or arctic regions.

Flexible applications: The module can be used to replace current modules, upgrade current modules, or provide new capabilities for general purpose relays that were not initially equipped with a given module.

Application Scenarios

UR-8LH modules are widely used in various industrial applications that require precise monitoring of current and voltage, such as power system protection and industrial automation control. Especially in power system protection applications such as transformer protection, line protection, generator protection, etc., UR-8LH modules play an important role.

Purchase and Maintenance

Purchase Channel: It is recommended to purchase through authorised distributors or official websites to ensure product quality and after-sales service.

Maintenance Recommendation: Regularly check and maintain the UR-8LH module to ensure that it is in good working condition. At the same time, pay attention to backup and save the related configuration data for recovery when needed.

Features

Power system monitoring and control:

The power interface board can be used for power system monitoring and control equipment to ensure the safe, stable and reliable operation of the power system.

Power plant automation:

In the power plant, it can be used to connect and manage the power supply of the mastering system and monitoring equipment to improve the automation level of the power plant.

Power transformer and distribution:

Applicable to substations and distribution stations, it is used to govern the power supply of transformers, circuit breakers and other equipments to ensure the high efficiency of power transmission and distribution.

Industrial Process Mastering:

In manufacturing and chemical workshops, this power interface board can be used for power management of automation systems, inner and control equipment to enhance productivity and safety.

Building Automation:

It can be used in building automation system, power supply to lighting, air conditioning, security equipment, etc., to achieve intelligent management of building equipment.

Railway flag signal system:

In the railway system, it is used in the power management of railway flag signal equipment and control system to ensure the stable operation of railway signal system.

Smart Grid:

In the smart grid, the power interface board can be used to connect and manage the digital power equipment and promote the intelligent development of the power grid.

Traffic Flag Signal System:

In the traffic flag signal system of routes and intersections, it is used to supply power to the flag master and equipment to ensure the normal display of traffic signals.

Aerospace:

In aviation and aerospace, the power interface board can be used in the control system of aircraft and spacecraft to provide stable and reliable power support.

It is suitable for land initiatives, oilfield equipment and other categories, providing power support for various land engineering equipment.

Technical specifications and performance

Voltage & Current: Specific voltage and current specifications may vary depending on application scenarios and customisation requirements, but usually have a wide range of voltage and frequency adaptations to suit the power standards of different regions.

Durability and Safety: High-quality power interface boards are usually made of durable materials and equipped with safety devices such as fuses and circuit breakers to ensure long term reliability and stability while protecting the equipment and users.

Communication features: Some power interface boards may have communication interfaces that allow the device to communicate with a computer or other control system for remote monitoring and control.

Indicator Lights and Displays: Some power interface boards may be equipped with indicator lights for displaying information such as power status, connection status, etc., to facilitate troubleshooting and status monitoring by users.