Product Short Description
Product Introduction
The GE Multilin UR8NH is a standard‑performance, high‑reliability CT/VT analog input module built exclusively for GE Multilin UR Series Universal Relays. It serves as the main signal interface between field current transformers (CTs) and voltage transformers (VTs) and the relay’s protection, metering, and control core. This module provides 8 standard current inputs with full signal integrity monitoring and advanced self‑diagnostics, delivering stable, accurate analog measurements for general‑purpose protection, automation, and power monitoring in utility, industrial, and commercial power systems.
Description
Technical Specifications
Electrical Specifications
- Product Type: Standard CT/VT Analog Input Module (8 Current Inputs)
- Series: GE Multilin UR Series Universal Relays
- Input Configuration: 8 × standard current input channels (1 A or 5 A nominal)
- Nominal Frequency: 50 Hz / 60 Hz (operating range 45–65 Hz)
- Measurement Accuracy: ±0.2% for current channels
- Input Burden: Ultra‑low burden to minimize CT loading
- Isolation: 2500 VDC galvanic isolation between field inputs and relay logic
- Sampling: High‑speed synchronous sampling for accurate waveform capture
- Power Supply: 24 VDC (provided by UR relay chassis)
- Software Compatibility: Fully configurable via GE EnerVista UR software suite
- Certifications: IEC, ANSI, IEEE, UL/cUL, CE, CSA compliant
Physical & Environmental Specifications
- Dimensions: 152 mm × 178 mm × 38 mm (6” × 7” × 1.5”)
- Weight: 1.15 kg (2.5 lb)
- Mounting: Plug‑in chassis mounting for UR‑series relay racks
- Operating Temperature: -40°C to +70°C (-40°F to +158°F)
- Storage Temperature: -55°C to +85°C (-67°F to +185°F)
- Relative Humidity: 0–95% RH (non‑condensing)
- Ingress Protection: IP20 (enclosed chassis installation)
- Pollution Degree: 3 (heavy industrial environment)
- Vibration Resistance: 5g RMS (10–500 Hz)
- Shock Resistance: 15g (20 ms half‑sine wave)
Key Features
- 8 Standard Current Inputs: Supports 1 A / 5 A CTs for universal field compatibility.
- Enhanced Signal Diagnostics: Continuous monitoring of input integrity, wiring faults, and module health.
- High Measurement Accuracy: ±0.2% precision for reliable protection and metering.
- Full Galvanic Isolation: Protects the relay core from field transients, surges, and ground loops.
- Ultra‑Low Input Burden: Preserves CT accuracy and extends service life.
- Hot‑Swappable Design: Module replacement without system shutdown to reduce downtime.
- LED Status Indicators: Front‑panel LEDs for channel health and module status.
- Full EnerVista Support: Complete configuration, calibration, and diagnostics via software.
- Industrial‑Grade Ruggedness: Stable operation in extreme temperatures and high‑vibration environments.
- Seamless UR Series Integration: Direct plug‑and‑play compatibility with all UR‑series relays.
Application Scenarios
- Utility Transmission & Distribution Substations: Feeder protection, overcurrent protection, and distribution monitoring.
- Power Generation Plants: Auxiliary power system protection and generator circuit monitoring.
- Industrial Power Distribution: Main incoming, switchgear, and motor control center protection.
- Manufacturing Facilities: General power system monitoring and overcurrent protection for production lines.
- Commercial Buildings & Data Centers: Critical power distribution and UPS input monitoring.
- Oil & Gas Installations: On‑site power system protection and field power monitoring.
- Mining Operations: Surface power distribution and equipment protection.
- Water & Wastewater Plants: Pump station and treatment facility power monitoring.
- Marine & Offshore: Vessel electrical system protection and monitoring.
- Renewable Energy Systems: Grid interconnection and inverter input current monitoring.
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