GE UR8HH CT/VT module

GE UR8HH CT/VT module

Introduction of GE

General Electric Company, that is, the United States General Electric Company (GE, for short, founded in 1892, also known as Kiwi Company, NYSE: GE), is the world's largest multinational company providing technology and service business, headquartered in Boston, United States. Since Thomas Alva Edison founded General Electric, GE has grown into an outstanding multinational company in the midst of its diversified development, with operations in more than 100 countries around the world and 315,000 employees.

Business Introduction

All GE businesses operate in China, covering industrial verticals such as aerospace, energy, and healthcare, with divisions in finance, smart manufacturing, R&D, and digitalisation to support the development of each business group. [37-38] GE serves more than 60 airlines in Greater China, has an installed base of more than 300,000 medical devices in China, and maintains strong relationships with five major power groups and local energy leaders, with more than 200 gas turbine generators in service.

INTRODUCTION

General Electric Multilin’s UR-8HH is a CT/VT module intended for installation in the Universal Relays series. It provides the relay with 1A/5A ground CTs and 3-1A/5A phase CTs, allowing the relay to scale down current ratings and voltage ratings to a value that enables the relay to monitor these system conditions and output data for user review. The data can then be employed for protective system functions executed by the relay itself. This data can be viewed through the relay’s liquid-crystal display or more efficiently through Multilin’s EnerVista UR software program.

Main Functions

Provides the relay with a 1A/5A ground current transformer and a 3-1A/5A phase current transformer.

Allows the relay to scale down current ratings and voltage ratings, enabling the relay to monitor these system conditions and output data for user viewing.

Data Viewing and Configuration

The module's data can be viewed through the relay's LCD display or more efficiently through Multilin's EnerVista UR software programme.

EnerVista UR allows for efficient configuration of the settings associated with the CT/VT module, allowing for highly customised scenarios to meet the unique needs of each user's system.

EnerVista's Viewpoint UR Engineer also features a drag-and-drop environment for quick debugging of relays and associated modules.

Module Connections and Channel Configuration

The voltage inputs of the CT/VT modules should be connected to specific channels to ensure proper function.

Channels 1 and 5 should be connected to phase A.

Channels 2 and 6 should be connected to phase B.

Channels 3 and 7 should be connected to phase C.

Channels 4 and 8 are connected to a single-phase supply.

Technical Features and Benefits

Provides a sensitive grounded 8CT function capable of reducing difficult-to-control voltage and current ratings to values that can be monitored and responded to by general-purpose relays.

The EnerVista UR software programme allows the user to easily configure and view module data, increasing the flexibility and ease of use of the system.

Designed with expandability in mind, the unit's panels can be removed to allow access to the module bay for installation and configuration.

Application Scenarios

The module is widely used in industrial applications where accurate monitoring of current and voltage is required, such as power systems, industrial automation, etc.

Instructions and warnings related to the operation of the product:

The following specifications must be strictly observed:

 The technical specifications and typical applications of the product system must be strictly observed.

 PERSONNEL TRAINING: Only trained personnel may install, operate, maintain or repair the product system. These personnel must be instructed on the

These personnel must be instructed and briefed on the conditions in the hazardous area.

 Unauthorised modifications: No modifications or structural changes may be made to the product system.

 Maintenance Responsibility: It must be ensured that the product system is only used under appropriate conditions and in a condition that is fully fit for purpose.

 Working environment: The user must fulfil the specified environmental conditions:

Safety regulations

The following safety regulations must be fully observed when (maintenance) work is carried out on the product system:

1 Disconnect completely.

2 Secure to prevent reconnection.

3 Confirm that the installation has been completed.

4 Perform grounding and short-circuiting