About the UR-8CH
General Electric Multilin’s UR-8CH is a CT/VT Module designed for installation in the Universal Relays as a replacement or upgrade in the system. This module provides the relay with 3-1A/5A phase CTs and 1/5A ground CTs.
In addition to providing data on the power system, current transformers are able to isolate the system from extreme currents and voltages, prolonging system life and reducing general maintenance costs. Additionally, current transformers provide standardized output voltages, cutting out the need for additional auxiliary protection. Voltage transformers also increase user safety and can reliably measure power system voltages.
CT/VT settings can be highly modified to create unique protective schemes, increasing the versatility of the module. These schemes include differential protection, concurrent split-phase protection, and more. The enhanced diagnostics featured on some versions of this module are capable of verifying the integrity of analog signals, employing an advanced algorithm to guarantee reliability. This feature, combined with the health diagnostic capabilities of the UR relay, provides dual-layered evaluation to ensure proper component function.