GE UR8HH

Based on previous searches and the information you’ve provided, the GE UR8HH appears to be a microprocessor-based numerical relay used for protecting, monitoring, and controlling electrical power systems in industrial environments. Here’s a summary of its key features and functionalities:

• Protection: The UR8HH likely offers various protective functions to safeguard electrical equipment from damage caused by faults, overloads, and other abnormal conditions. These might include:
  • Overcurrent protection: Detects and trips (disconnects) circuits experiencing excessive current to prevent overheating and equipment damage.
  • Ground fault protection: Identifies and isolates faults where current leaks to the ground (earth) to minimize safety hazards.
  • Under-voltage and over-voltage protection: Disconnects circuits when voltage falls below or exceeds safe operating limits.
  • Additional protection features might be available depending on the specific model and configuration of the UR8HH.
•  Monitoring: The UR8HH can monitor various electrical parameters within the power system, such as:
  • Voltage levels
  • Current levels
  • Power factor
  • Frequency
  • This information is crucial for ensuring power system stability and identifying potential issues before they escalate into faults.
• Control: In some configurations, the UR8HH might offer control functionalities, such as:
  • Automatic switching: Can automatically switch between power sources or feeders to maintain system reliability.
  • Load shedding: Disconnects non-critical loads during peak demand periods to prevent system overload.

Applications:

The GE UR8HH is likely used in various industrial settings requiring protection, monitoring, and control of electrical power systems, such as:

• Manufacturing facilities: Protecting motors, transformers, and other electrical equipment from faults and ensuring reliable power supply for production processes.
• Data centers: Monitoring and safeguarding critical power infrastructure for continuous operation of IT equipment.
• Power distribution substations: Protecting and controlling the flow of electricity within the power grid.

Finding More Information:

While a specific datasheet for the GE UR8HH might be difficult to find publicly, here are some resources to learn more about its functionalities and applications:

• Industrial Parts Suppliers: Several suppliers sell this relay [supplier 1], [supplier 2], [supplier 3] (similar to previous searches, I cannot share URLs but searching the part number should lead you to product pages). These pages might offer details on:
  • Specifications like voltage and current ratings, supported protection functions.
  • Compatibility with other GE power system equipment.
• GE Website: Search the GE website (specifically the GE Grid Solutions section) for application notes or white papers related to industrial power protection relays. Look for terms like “GE industrial relays for protection” or “GE UR series relays applications”. These documents might provide general information on the functionalities of GE’s numerical relay range, which could be applicable to the UR8HH.

Due to the potential existence of different UR8HH models with varying functionalities, contacting GE support directly might be the most effective way to determine the specific features and applications of the UR8HH you’re interested in, especially if it’s an older model. They have access to internal resources or part databases to identify its purpose and provide more comprehensive information.