The GE Multilin UR8LH is a high-performance Current Transformer (CT) and Voltage Transformer (VT) module designed for the Universal Relay (UR) series. This module provides essential measurement capabilities, supporting 4CT/4VT configurations with enhanced diagnostics. It is engineered to scale down high current and voltage values to levels manageable by the relay, ensuring accurate power system monitoring and protection. Its advanced algorithms verify signal integrity, making it a critical component for identifying hazardous electrical conditions and maintaining system reliability.

Product Specifications

• 📦 Product Type: CT/VT Input Module

• 🔧 Manufacturer: GE Multilin / GE Vernova

• ⚡ Input Configuration: 4CT / 4VT

• 🌡️ Operating Temperature: -10°C to 50°C

• 📏 Dimensions: Approximately 20 cm × 15 cm × 10 cm

• ⚖️ Weight: 1.5 kg

• 🌍 Origin: USA

• 🛠️ Series: UR Series Universal Relays

• 💻 Software Compatibility: EnerVista UR Setup Software

Frequently Asked Questions (Q&A)

❓ What is the primary function of the UR8LH module? The UR8LH serves as an input interface for the GE Universal Relay. It transforms high-level analog current and voltage signals from the power system into low-level signals that the relay’s processor can analyze, while simultaneously performing diagnostic checks to ensure the data is accurate.

❓ Can I use the UR8LH in any UR relay? The UR8LH is designed for the modular UR platform, but it is essential to ensure hardware and firmware compatibility. It is often recommended to pair this module with newer CPU versions (firmware 4.0x or higher) to avoid hardware mismatch errors.

❓ What does “Enhanced Diagnostics” mean for this module? Unlike standard modules, the UR8LH utilizes sophisticated algorithms to monitor the integrity of the incoming analog signals. It can detect internal measurement failures and trigger alarms or block protection functions, preventing incorrect tripping due to bad data.

❓ Does this module support sensitive ground fault protection? No, the UR8LH is a standard 4CT/4VT module. If your application specifically requires sensitive ground fault detection, you may need to look for other specific modules within the UR series, such as the 8G, 8J, 8M, or 8R variants.

Recommended UR Series Modules & Models

If you are looking for other components within the GE Multilin UR ecosystem, consider these popular series/models often used in similar power protection architectures:

1. UR-G60 – Generator Protection Relay

2. UR-M60 – Motor Protection Relay

3. UR-L60 – Line Phase Comparison Relay

4. UR-L90 – Line Differential Relay

5. UR-D60 – Line Distance Relay

6. UR-T60 – Transformer Protection Relay

7. UR-B30 – Breaker Management Relay

8. UR-C30 – Controller/Bay Management Relay

9. UR-F60 – Feeder Protection Relay

10. UR-Plus – Enhanced Universal Relay platform with advanced automation capabilities