Description
GE Multilin UR8CH
GE Multilin UR8CH is a multi-functional module in the GE Multilin series, mainly used in general relay systems and capable of providing current transformer (CT) and voltage transformer (VT) functions.
Overview: The UR8CH module is mainly used to measure and monitor the current and voltage of power systems. It is an important component of the UR series relays and can meet the needs of various protection schemes.
Functional Features: It has phase current and ground current measurement functions, which can provide more comprehensive protection for power systems, help detect abnormal current conditions in the system in a timely manner, and provide data support for subsequent protection actions.
Technical Parameters: There are 8 input channels and 8 output channels. The input impedance is 10kΩ, and the output impedance is 100Ω. The maximum gain is +24dB, and the maximum output level is +20dBu. The sampling rate can be selected from 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, and 192kHz. The output voltage is 24VDC, the output current range is 4-20mA, and the resolution is 12 bits. The communication protocol adopts Ethernet/IP. The size is 40×40×30mm, and the weight is 3.5kg. The operating temperature range is -40℃ to 85℃, the enclosure protection level is IP67, the installation method is screw fixing, and the connection method is terminal block.
Working Principle: Based on microprocessor technology, it first collects current and voltage data in the power system through built-in current transformers and voltage transformers. Then the microprocessor processes and analyzes the collected data in real-time to determine whether there is a fault. If a fault is detected, it will execute corresponding protection actions such as tripping and alarming according to the preset protection logic. At the same time, it will send fault information to the monitoring system through the communication interface and record it in the internal memory for subsequent analysis.
Application Fields: It is mainly used in power systems, and can be used in various substations, power plants and other places to monitor and protect the current and voltage of power equipment, ensuring the stable operation of power systems. It can also be used in industrial fields with high requirements for power reliability, such as iron and steel, chemical industry, metallurgy and other industries, to monitor and protect related power equipment.
