UR8FH
UR8FH
UR8FH
UR8FH
UR8FH
UR8FH
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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power supports verified UR8FH spare sourcing and migration documentation for installed UR relays.

UR8FH

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GE UR8FH is an 8F-family CT/VT DSP option module used in applicable GE Multilin Universal Relay configurations.
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Technical specifications for UR8FH

  • Manufacturer:
    General Electric
  • Part Number:
    UR8FH
  • Product Family:
    GE Multilin
  • Product Type:
    UR Relay CT/VT DSP Module
  • Stock:
    1
  • Manufacturer:
    GE Vernova / GE Multilin
  • Product family:
    Universal Relay
  • Option family:
    UR-8Fx
  • Module role:
    CT/VT DSP input module
  • Documented arrangement:
    Standard 4CT/4VT
  • Weight:
    1.18 kg
  • Estimated shipping dimensions:
    4x18.3x17.1cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    USA
  • 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 Selection Installation Service Checks Applications

Features:

  • Protection input role: Provides the CT and VT signal-processing path for an applicable GE Multilin Universal Relay build.
  • Module family: Uses the 8F standard 4CT/4VT arrangement represented by the installed option code.
  • Host dependency: Requires the relay order code, slot, wiring, firmware and settings to be matched together.
UR8FH is used inside a compatible Universal Relay to bring current- and voltage-transformer signals into the protection and metering functions.

The module does not operate as a stand-alone measurement card; its behavior depends on the host relay hardware, firmware, slot assignment, CT/VT wiring and protection settings.

Keeping the complete UR8FH identity with the host-relay order code helps protection teams avoid a module that fits the chassis but does not reproduce the installed input arrangement.

Apter Power supports exact-model document review, quotation, and procurement for the General Electric UR8FH UR Relay CT/VT DSP Module.
General Electric UR8FH UR Relay CT/VT DSP Module Manuals,Datasheets,Link 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.
  • Order code: verify UR8FH and the complete host-relay order string.
  • Hardware position: confirm module slot, connector keys, and CT/VT terminal mapping.
  • System context: capture relay model, firmware, settings, and protection drawings.
  • Safe state: follow the approved relay-outage and primary-equipment isolation plan.
  • Instrument circuits: manage CT shorting and VT isolation under qualified procedures.
  • Configuration: restore and independently verify settings before returning protection to service.
  • Hardware diagnostics: check module recognition and relay self-tests.
  • Secondary injection: verify current, voltage, metering, phase, and protection response as required.
  • Acceptance: document settings checksum, test results, alarms, events, and protection return-to-service approval.
  • UR relay maintenance: exact-option support for documented 8F installations.
  • Protection inputs: CT and VT signal processing in applicable Universal Relays.
  • Migration planning: engineering review of the 8L successor path identified by GE Vernova.
Description
Within an applicable GE Multilin Universal Relay, UR8FH forms the CT/VT signal-processing stage used by protection, metering and event functions. The 8F family represents the standard 4CT/4VT arrangement, while the full installed code remains the service identity.

A replacement UR8FH must be checked with the host relay order code, slot assignment, transformer wiring, firmware and settings file. Mechanical fit alone does not prove that secondary circuits, scaling or protection logic will remain correct.

Before UR8FH is returned to service, the protection team should retain the module and relay identities, settings checksum, wiring record and approved test results. These records keep a hardware change traceable to the protection design that depends on it.
Alternative Names
UR-8FH UR 8FH GE UR8FH
Technical notes
For UR8FH, place the protected equipment in an approved safe state, isolate CT and VT circuits under the site procedure, and preserve relay settings and event records. Match the full relay order code, module slot, wiring, firmware, and protection logic; stop if the H suffix or 8L migration design is not independently verified.
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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.
The GE notice and manual refer to an 8F or UR-8Fx family, but the installed label reads UR8FH. How should the spare be identified?
Use the installed module label together with the complete host-relay order code, slot and wiring record; family-level references do not establish the exact H-suffix configuration.
A UR8FH module fits the relay slot. Is physical fit enough to approve installation?
No. Match the relay order code, hardware revision, slot, CT/VT wiring, firmware, settings and approved protection design before energizing the relay.
What must happen to CT and VT circuits before UR8FH is removed?
Place the protected equipment in the approved safe state and apply the qualified site procedure for CT shorting, VT isolation and secondary-circuit control.
The host relay does not recognize UR8FH after installation. What should be checked first?
Check connector seating, slot assignment, exact option identity, supported hardware and firmware, the required power-cycle procedure and the relay self-diagnostics.
Can a different CT/VT module family be substituted for UR8FH during an outage?
Not without protection-engineering approval. The change must be assessed for transformer inputs, wiring, scaling, firmware, settings, tests and outage consequences.
What proves that UR8FH is ready for return to service?
Retain the exact relay and module identities, settings backup and checksum, secondary-injection results, alarm and event review, and a signed return-to-service record.