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UR8CH

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GE Vernova UR8CH is a legacy Multilin Universal Relay 8C analog input module for eight current-transformer channels. It belongs to the older UR hardware generation used with legacy 9A, 9C and 9D CPUs.
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Technical specifications for UR8CH

  • Manufacturer:
    General Electric
  • Part Number:
    UR8CH
  • Product Family:
    GE Multilin
  • Product Type:
    Legacy 8C CT Analog Input Module
  • Stock:
    1
  • Platform:
    GE Multilin Universal Relay (UR)
  • Module function:
    Legacy standard current-transformer analog input module
  • Hardware generation:
    Older UR hardware generation
  • Legacy CPU compatibility:
    Documented with older 9A, 9C and 9D CPU hardware
  • Current hardware mapping:
    GE hardware-change documentation maps legacy 8C to newer 8H
  • Ordering suffix:
    H execution; verify the complete label before exchange
  • Analog channel type:
    Eight standard CT inputs
  • Legacy CPU set:
    9A, 9C and 9D
  • Weight:
    1.22 kg
  • Estimated shipping dimensions:
    4x18.5x17.2cm
  • Tariff Code:
    85389091
  • Country of origin:
    Canada
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Interoperability Monitoring Diagnostics & Protection

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.
Description
UR8CH is the legacy 8C standard eight-current-transformer input option for earlier Universal Relay hardware. It receives CT secondary quantities used by the host relay's protection, metering and monitoring functions.

CT secondary currents enter the isolated analog-input stage and are converted for the relay's digital signal-processing section. The host relay then calculates protection quantities and applies the configured algorithms; the 8C board itself is the acquisition hardware, not a complete protective relay.

GE maps old 8C hardware to the newer 8H standard-8CT option, but the two belong to different CPU/DSP generations. Old 8C modules are documented with old 9A, 9C and 9D CPUs, while newer CT/VT modules require the matching newer CPU family.
Alternative Names
UR8CH UR 8CH UR-8C-H GE UR8CH GE Vernova UR8CH GE Vernova Multilin 8C CT Input Module Universal Relay UR 8C H
Technical notes
UR8CH must not be mixed with an incompatible CPU/DSP generation; a hardware mismatch can prevent relay operation and produce DSP or hardware errors.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which CPU modules are associated with legacy GE Vernova UR8CH hardware?
GE documents the old 8C module with legacy 9A, 9C and 9D CPU hardware generations.
What does GE Vernova UR8CH measure for the host relay?
It acquires eight current-transformer secondary inputs used for protection, metering and monitoring calculations.
Why can an 8H mapping not be treated as plug-in interchangeability for GE Vernova UR8CH?
GE's mapping crosses hardware generations; CPU, DSP, firmware and CT/VT module compatibility still have to be engineered.
Which fault indications can follow a GE Vernova UR8CH generation mismatch?
The relay may report DSP ERROR or HARDWARE MISMATCH and can be prevented from operating.
What current-circuit precaution applies before GE Vernova UR8CH removal?
The approved relay procedure must safely short CT secondaries and isolate the affected protection channel before module extraction.
What identification set is needed to source GE Vernova UR8CH?
Provide the complete relay model, CPU code, module label color and suffix, firmware, CT rating, slot, quantity and destination.