Features:
- Identifies the legacy 8C current-transformer input module for Universal Relays.
- Belongs to the older UR hardware generation used with legacy CPU modules.
- Must not be exchanged solely by mechanical fit because hardware generations differ.
UR8CH identifies the H-execution of the legacy 8C standard-current input module.
It acquires CT secondary quantities used by the host relay's protection, metering and monitoring algorithms.
Match CPU generation, CT rating, firmware and slot hardware rather than relying on the newer 8H mapping alone.
Legacy 8C supply requires complete relay-generation and CT-input verification.
Verified resources for GE Vernova UR8CH:
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Acquire phase and residual current quantities for compatible UR protection elements.
- Maintain metering and event records in an older Universal Relay installation.
- Restore a legacy CT input stage when the CPU and DSP generation remain unchanged.
- Legacy 8C modules are documented with older 9A, 9C, and 9D CPU hardware.
- Newer CT/VT modules require the matching later CPU and DSP generation.
- A mechanically seated module may still be electronically incompatible.
- Eight CT secondary channels enter the isolated analog front end.
- The board converts current quantities for the host relay's digital processing.
- Protection algorithms and settings remain functions of the complete relay rather than the module alone.
- An incompatible module and CPU can raise DSP ERROR or HARDWARE MISMATCH indications.
- The relay may remain out of service until compatible hardware is installed.
- CT circuits must be safely shorted before removing the analog input module.