GE UR8AH high-performance current transformer (CT)/voltage transformer (VT) module

Description

GE UR8AH is a high-performance current transformer (CT)/voltage transformer (VT) module and an important component of the GE Multilin universal relay series. It serves as a critical connection between current transformers, voltage transformers, and universal relays, playing a role in signal conditioning and interface.

UR8AH

This module is designed for use in the architecture of integrated protection and control systems. It obtains high voltage and high current signals from the main electrical system, steps them down through current transformers and voltage transformers, and presents these signals in a form that is easy to process with a universal relay. In this way, it enables the relay to execute protection algorithms, analyze data, and make informed control decisions.

UR8AH

Main features and advantages:
In terms of functional performance, it provides high-precision measurement. It can accurately measure current and voltage values, and its level of accuracy ensures reliable operation. For example, it can detect small deviations from normal operating parameters, which is crucial for preventing equipment damage and ensuring grid stability.

The hardware design of GE UR8AH is both robust and compact. It can withstand harsh environmental conditions such as extreme temperature, humidity, and vibration. This makes it suitable for industrial environments where outdoor substations or standard components may fail prematurely. Its compact size makes it easy to install in small spaces (such as crowded electrical panels) without affecting functionality.

Compatibility is a major advantage of GE UR8AH . It can seamlessly interface with various current transformers and voltage transformers, supporting different current and voltage ratios. This flexibility enables it to be used in various power system settings, from small distribution networks to large industrial factories. In addition, it can communicate with other devices in the system through various protocols such as Modbus RTU and DNP 3, facilitating data sharing and system integration.

In terms of long-term reliability, the design of GE UR8AH considers durability. Even in continuous operation, it has a long service life. The components used are of high quality and designed to resist wear and tear. This means that once installed, it can provide stable and reliable performance for a longer period of time, reduce the need for frequent replacement, and minimize downtime to the greatest extent possible.

UR8AH

Technical specifications:
Model GE UR8AH
Brand General Electric
Type CT/VT module
Three 1A/5A phase current transformers and one 1A/5A grounding current transformer for the current input channel
Four 120V/240V voltage transformers in the voltage channel
Current accuracy level 0.5
Voltage accuracy level 1
Current load: 5VA per current transformer
Voltage load: 5VA per voltage transformer
Working temperature -40 ° C to+85 ° C
Installation method: DIN rail installation
Size approximately 15cm (length) x 18cm (width) x 4cm (height)
Weight 2 pounds 9 ounces
Software Enervista
Certification meets relevant industry standards
Environmental grade suitable for harsh industrial environments

Contact Us
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UR8AH

Application areas:
Taking large power plants as an example, GEUR8AHplays a crucial role in protecting generators from potential damage. It monitors electrical current and voltage to ensure that any abnormal conditions, such as overcurrent or undervoltage, can be detected and corrected in a timely manner. In the transmission network, it helps maintain grid stability by accurately measuring and controlling power flow. For example, when there is a sudden change in load demand, GE UR8AH can quickly adjust the system to prevent power outages or voltage drops.

The field of industrial automation is also where this module excels. Factories with high-power mechanical equipment rely on GE UR8AH to protect their equipment. If a motor in the manufacturing plant experiences an abnormal surge in current due to mechanical issues, GE UR8AHwill detect this situation and take corresponding measures, such as tripping the circuit breaker to prevent the motor from burning out. It can interface with current and voltage transformers, making it an ideal choice for applications that require precise electrical monitoring and control, ensuring smooth operation of industrial processes and improving the overall safety of electrical systems.

UR8AH

Related products:
GE UR-9A – An old version of the General Electric Multilin CPU module, compatible with GE UR8AH. In systems that require specific component combinations, it can work in conjunction with GE UR8AH.
GE UR-9C – Another General Electric Multilin CPU module that works well with GE UR8AH. They can jointly build reliable protection and control systems for power applications.
GE UR-9D – complementary to GE UR8AH, this module can be integrated into the system to enhance overall functionality, particularly in data processing and control decision-making.
GE UR-8F – New version of current transformer/voltage transformer module. Although it shares some similarities with GE UR8AH, it may provide additional features or improvements that can be used as a substitute or in combination with GE UR8AH in certain applications.
GE I/O-5010- an input/output module that can be used in conjunction with GE UR8AH to expand the system’s data acquisition and control capabilities, enabling more comprehensive monitoring and control of electrical systems.

UR8AH

Installation and maintenance:
Before installing GE UR8AH it is essential to carefully plan the installation location. Ensure that the electrical panel has sufficient space to accommodate the module and consider its size. When installing it on a DIN rail, please ensure that the rail is securely fixed and can withstand the weight of the module. In addition, pay attention to the wiring connections. Use wires of appropriate specifications and ensure that all connections are secure to prevent arc discharge or signal interference.

For maintenance, it is recommended to conduct regular visual inspections. Check for any signs of physical damage, such as cracks or loose parts. Check the wiring for signs of wear or corrosion. It is also recommended to conduct regular calibration checks to ensure that the module accurately measures current and voltage. If GE UR8AH is connected to the network, please pay attention to the communication status to ensure smooth data transmission. In addition, please keep an eye on General Electric’s software releases in a timely manner. Firmware updates can bring performance improvements, error fixes, and enhanced security features, so it is important to apply these updates as recommended.

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