GE UR8LH CT/VT Analog Input Module

Description

Technical Specifications

Electrical Specifications

• Product Type: CT/VT Analog Input Module (Enhanced Diagnostics)
• Series: GE Multilin UR Series Universal Relays
• Current Input Channels:
  • 3 × phase current channels (1 A or 5 A nominal)
  • 1 × ground/residual current channel (1 A or 5 A nominal)
• Voltage Input Channels: 4 × voltage channels (supports line‑to‑line and line‑to‑neutral configurations)
• Nominal Frequency: 50 Hz / 60 Hz (operating range 45–65 Hz)
• Measurement Accuracy: ±0.2% for current and voltage channels
• Isolation: 2500 VDC galvanic isolation between field inputs and relay logic
• Sampling Rate: High‑speed synchronous sampling for accurate waveform capture
• Input Burden: Ultra‑low burden to minimize CT/VT loading
• Power Supply: 24 VDC (provided by UR relay chassis)
• Software Compatibility: Fully configurable via GE EnerVista UR software suite (firmware v4.0x+ required)
• Certifications: IEC 60947‑2, ANSI, IEEE, UL/cUL, CE compliant

Physical & Environmental Specifications

• Dimensions: 150 mm × 180 mm × 40 mm
• Weight: 1.16 kg (2 lb 9 oz)
• Mounting: Plug‑in chassis mounting for UR‑series relay racks
• Operating Temperature: -40°C to +70°C
• Storage Temperature: -55°C to +85°C
• 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‑Channel Analog Input: Provides 4 current channels + 4 voltage channels for complete three‑phase electrical monitoring.
• 1A / 5A CT Compatibility: Supports standard current transformer ratings for universal field installation.
• Enhanced Signal Diagnostics: Advanced algorithms verify analog signal integrity, detect wiring faults, and ensure measurement reliability.
• High Accuracy Measurement: Delivers ±0.2% precision for reliable metering, protection, and power quality analysis.
• Full Galvanic Isolation: Protects relay electronics from field transients, ground loops, and electrical interference.
• Ultra‑Low Input Burden: Minimizes impact on connected CTs and VTs to maintain signal integrity.
• High‑Speed Sampling: Captures fast transient events for accurate fault detection and waveform recording.
• Plug‑and‑Play Integration: Directly compatible with all UR‑series relays for seamless system expansion.
• Hot‑Swappable Design: Allows module replacement without system shutdown to reduce downtime.
• LED Status Indicators: Front‑panel LEDs for channel health and module status for quick field diagnostics.
• EnerVista Software Support: Full configuration, calibration, and diagnostics via GE’s professional software platform.
• Industrial‑Grade Durability: Rugged construction for reliable operation in extreme temperatures and high‑vibration environments.

Application Scenarios

• Transmission & Distribution Substations: Feeder protection, busbar protection, and capacitor bank protection with real‑time signal diagnostics.
• Power Generation Plants: Generator protection, transformer protection, and auxiliary power system monitoring.
• Industrial Power Distribution: Main incoming, motor control, and large load circuit protection.
• Oil & Gas Facilities: Power system protection for drilling rigs, pumping stations, and processing plants.
• Mining Operations: Underground and surface power distribution protection and monitoring.
• Water & Wastewater Treatment: Pump station and treatment facility power system protection.
• Data Centers: Critical power distribution, UPS, and generator output monitoring and protection.
• Marine & Offshore Installations: Vessel and platform electrical system protection and monitoring.
• Renewable Energy Systems: Wind turbine and solar farm grid interconnection protection.
• Heavy Manufacturing: Steel, cement, and chemical plant high‑power equipment protection.