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Home > Electrical & Electronics > Electrical Control System > GE UR8FH UR-8FH Universal Relay Module

GE UR8FH UR-8FH Universal Relay Module

Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

GE UR8FH UR-8FH Universal Relay Module thumbnail-1

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GE UR8FH UR-8FH Universal Relay Module photo-1

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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Global universal model

Certification:

Function:

Other, Global universal model

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Port of Shipment:

guizhou

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Global universal model

Certification CE

Function Other, Global universal model

Condition New

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

GE UR8FH (UR-8FH) is a Current Transformer/Voltage Transformer (CT/VT) module specifically designed for the General Relay Series, playing a crucial role in the monitoring and control of power systems. Its core function is to provide precise current and voltage scaling for relays, enabling efficient monitoring and control operations.

I. Core Technical ParametersCurrent Transformer Configuration

The module is equipped with 3 current transformers (1A/5A) for phase current measurement, which can accurately monitor the current of each phase and provide key data for evaluating the operating status of the power system. Additionally, it is furnished with 1 current transformer (1A/5A) for ground current measurement. While this transformer does not have a sensitive grounding function (it cannot provide protection for general relays in high-impedance grounding systems—modules with this function include UR-8G, UR-8J, UR-8M, and UR-8R), it can still function effectively in conventional ground current monitoring scenarios.

Voltage Transformer Terminals

It is provided with 4 voltage transformer terminals for voltage scaling. These terminals can proportionally convert high voltages into voltage levels suitable for relay monitoring and processing, ensuring that relays can accurately acquire system voltage information and thereby achieve effective monitoring and control of power system voltages.

Input Characteristics

It supports voltage or contact input on channels 1-4 or 5-8, offering flexibility for connecting different types of signals. Users can select appropriate input channels and input methods based on actual application scenarios and sensor types to meet diverse monitoring and control requirements.

Dimensions and Weight

Its external dimensions are approximately 15 cm (length) × 18 cm (width) × 4 cm (height), and its weight is about 2 pounds 9 ounces (approximately 1160 grams). This size and weight design not only ensures the module’s integration in terms of function implementation but also balances the convenience of installation and use, enabling it to adapt to a variety of installation spaces and environmental requirements.

Operating Environment Parameters

It boasts excellent environmental adaptability, with an operating temperature range of -40°C to +85°C and a storage temperature range of -55°C to +105°C. In terms of humidity, it can adapt to a 0-100% non-condensing environment. Meanwhile, it exhibits strong vibration and shock resistance: it can withstand vibrations of 5-15 Hz with a 0.006" amplitude, 15-50 Hz with 0.5g, 50-100 Hz with 1g, and shocks of 15g with an 11ms half-sine wave. This allows the module to operate stably in various harsh industrial environments, ensuring reliable monitoring and control of the power system.

II. Functional FeaturesSignal Scaling Function

One of the core functions of the UR8FH module is to proportionally reduce the high current and high voltage in the actual power system to a range that relays can handle. For example, for thousands of amperes of current and hundreds of kilovolts of voltage in high-voltage transmission lines, its built-in current transformers and voltage transformers convert these large-value electrical signals into milliamp-level current and volt-level voltage, providing suitable input signals for relay monitoring and control. This function ensures that relays can accurately sense the operating parameters of the power system and thus make timely corresponding control decisions.

Multi-Channel Input Selection

The module offers a flexible input channel selection method. Users can connect voltage or contact signals to channels 1-4 or 5-8 according to actual needs. This multi-channel selection function is highly practical in real-world applications. For instance, in a complex power monitoring system, different types of sensors (such as voltage sensors and switching sensors) can be connected to appropriate channels based on their signal characteristics, allowing the module to process multiple types of signals simultaneously and improving the system’s integration and monitoring efficiency.

Collaborative Work with General Relays

As a supporting module for the General Relay Series, the UR8FH maintains a close collaborative relationship with relays. It provides scaled current and voltage signals to relays, and relays perform logical judgment and control operations based on these signals. For example, when the monitored current or voltage exceeds a preset threshold, the relay can act quickly to protect power equipment or adjust the operating status of the power system. This collaborative working mode ensures the stable operation of the power system and the safety of equipment.

III. Application ScenariosPower Transmission and Distribution

In high-voltage transmission lines and the power distribution networks of substations, the UR8FH module can be used to monitor the current and voltage of transmission lines. By real-time monitoring these parameters, issues such as line overload and voltage abnormalities can be detected in a timely manner, providing accurate data support for power dispatchers so that they can take timely measures to ensure the safe and stable operation of power transmission and distribution. For example, during the peak summer electricity consumption period, real-time monitoring of transmission line current through this module can help predict in advance whether the line will experience overload, thereby adjusting the load in advance to avoid line failures.

Power Stations

In various types of power stations, such as thermal power stations, hydropower stations, and wind power stations, the UR8FH module can be used to monitor the output current and voltage of generators. Through precise monitoring and control of these parameters, generators can be ensured to operate under optimal working conditions, improving power generation efficiency while protecting generators from damage caused by abnormal current and voltage. For example, in wind power stations, due to the instability of wind speed, the output voltage and current of generators fluctuate frequently. The UR8FH module can monitor these fluctuations in real time and transmit signals to the control system to adjust the generator’s operating parameters in a timely manner, ensuring the quality of electrical energy.

Industrial Automation Systems

In large-scale industrial production facilities, the UR8FH module can be used to monitor and control the operation of various electrical equipment. For instance, in steel plants, it is used to monitor the current and voltage of large motors, ensuring the normal operation of the motors and avoiding motor damage caused by overload or voltage abnormalities, which would otherwise affect the entire production process. In chemical enterprises, it can monitor the power supply parameters of various pumps, compressors, and other equipment to ensure the continuity and stability of the production process.

Product Tags: UR8FH , GE , universal relay module