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The GE Multilin UR 8NH is a specialized analog input module designed for the GE Multilin Universal Relay Series. It delivers high-fidelity acquisition of current transformer (CT) and voltage transformer (VT)...
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The GE Multilin UR 8NH is a specialized analog input module designed for the GE Multilin Universal Relay Series. It delivers high-fidelity acquisition of current transformer (CT) and voltage transformer (VT) signals, enabling precise waveform monitoring and accurate data processing for advanced power system protection schemes.
Engineered for critical electrical infrastructure, the UR 8NH acts as a key interface between field measurement devices and the relay’s central processing unit. With integrated diagnostic capabilities and high-resolution analog-to-digital conversion, the module ensures reliable signal acquisition for substation protection and automation applications.
| Parameter | Specification |
|---|---|
| Model / Part Number | UR 8NH |
| Device Type | CT/VT Analog Measurement Module |
| Compatibility | GE Multilin Universal Relay (UR) Platform |
| Weight | 1.95 kg |
| Dimensions | 12.75 in × 10.50 in × 4.50 in |
| Signal Accuracy | High-precision analog-to-digital conversion |
| Diagnostic Functions | Real-time internal channel monitoring and self-test routines |
The GE Multilin UR 8NH functions as a critical interface between primary measurement sensors and the relay’s protection logic. By continuously monitoring internal channel performance, the module can quickly detect anomalies or hardware faults that may affect measurement accuracy.
If a malfunction is detected, the system can automatically block associated protection trip commands, ensuring that protection actions are based only on verified and reliable measurement data. This safeguard helps prevent nuisance tripping and enhances the operational security of the power system.
Does the UR 8NH require manual configuration after installation?
Yes. After installing the UR 8NH module, the relay must be configured using EnerVista UR Setup. This configuration step maps CT and VT inputs to the appropriate protection elements within the relay logic.
Is this module compatible with older UR relay chassis models?
Compatibility depends on the CPU firmware version and the backplane revision of the relay chassis. It is recommended to verify the rack serial number and firmware version against the module’s technical documentation before installation to ensure proper system integration.
