Description

UR8LH Product Introduction & Technical Specifications
Brand: General Electric (GE Multilin)
Model: UR8LH
Product Name: UR Series High-Density Universal Relay Digital I/O Module
Place of Origin: United States
HS Code: 8543709990
Dimension: 105 mm × 100 mm × 44 mm
Weight: Approximately 0.6 kg
Operating Voltage: Wide-range 18–36 V DC input, standard rated 24 V DC
Operating Current: 90 mA typical operating current; Maximum power consumption ≤ 15 W

UR8LH

Core Technical Characteristics & Performance Parameters
1. High-Density I/O Channel Configuration
The UR8LH module is equipped with 8 groups of Form-C high-power relay output channels, supporting multi-point synchronous signal output and linkage control. It matches high-voltage DC contact input standards, compatible with 125 V DC and 250 V DC field signal specifications. Each channel features independent isolation design, which avoids crosstalk between different signal loops and ensures independent and stable operation of each control loop. The high-density channel layout greatly improves the on-site signal expansion capacity of the main control relay, meeting multi-point monitoring and control requirements of complex power systems.
2. Ultra-Fast Logic Response Performance
Adopting high-speed industrial logic processing chip, the module achieves a typical logic response time less than 4 ms for contact signal conversion and execution. It supports real-time signal detection and instantaneous fault response, which can quickly trigger protection actions when power system abnormal conditions occur, effectively reducing equipment fault loss and operation risks. The built-in signal integrity verification function can automatically monitor signal quality and identify abnormal signal distortion and loss, ensuring accurate and reliable system logic judgment.
3. Powerful Industrial Communication Compatibility
The module supports multiple mainstream industrial communication protocols including Modbus RTU, DNP3.0 and IEC 61850, and is compatible with GE EnerVista UR professional configuration software. It is equipped with standard RS-232, RS-485 and Ethernet communication interfaces, realizing high-speed data interaction, remote parameter configuration and real-time status upload with upper-level monitoring systems. It supports 100 Mbps maximum communication rate, ensuring stable and delay-free data transmission in complex industrial network environments.
4. Superior Electrical Protection & Anti-Interference Ability
Adopting high dielectric isolation and industrial EMC electromagnetic compatibility design, the module can resist strong electromagnetic interference and signal clutter in substation and power plant environments. The power terminal supports ±2 kV surge protection, and the communication line supports ±1 kV surge protection, which effectively adapts to lightning surge and voltage transient impact in outdoor and harsh power scenarios. Built-in over-voltage, under-voltage, over-current and short-circuit protection circuits, it realizes automatic fault isolation and self-protection to avoid module damage and system linkage failure.
5. Excellent Harsh Environment Adaptability
Designed for heavy-duty power industry working conditions, the module features a wide continuous operating temperature range of -40 ℃ to +70 ℃, capable of stable operation in extreme low-temperature and high-temperature environments. The applicable ambient humidity ranges from 5% to 95% non-condensing, adapting to high-humidity, dusty and temperature-alternating substation and workshop environments. The storage temperature covers -40 ℃ to +85 ℃, ensuring long-term safe storage and standby application.
6. Redundant Design & System Compatibility
The module supports dual-CPU redundancy and redundant power supply chassis matching of GE UR series systems, improving the overall operational reliability of the control system. It can be seamlessly compatible with various GE universal relay main units, supporting on-site system upgrade, expansion and old equipment replacement without modifying the original control logic, which greatly reduces on-site transformation and maintenance costs.
7. Durable Relay Load Capacity & Long Service Life
The built-in industrial-grade mechanical relay contacts support a maximum load of 50 A @ 240 V AC, with strong load driving capacity and stable switching performance. It features contact health monitoring and coil self-diagnosis functions, which can real-time detect relay working status and predict potential faults. The module supports 24-hour uninterrupted S1 full-load continuous operation, fully adapting to the long-term stable operation requirements of power system equipment, with low failure rate and long service life.

UR8LH

UR8LH

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