GE Multilin UR-9KH – CPU Module for Universal Relays

The GE Multilin UR-9KH is a high-performance CPU module developed for use within GE’s Universal Relay (UR) series. Serving as the processing core of the system, the UR-9KH handles all computational logic, control frameworks, and relay decision-making processes. It is an essential component for enabling real-time protection, automation, and control features in UR-based solutions.

Technical Specifications

• Manufacturer: GE Multilin

• Manufacturing Location: Ontario, Canada

• Weight: Approx. 1 lb, 10 oz (0.74 kg)

• Dimensions: Approx. 6.5” (L) × 6” (W) × 2.5” (H)

Product Overview

The UR-9KH CPU module is responsible for executing the logic, control functions, and data processing within a GE Universal Relay. It supports core functionalities such as:

• Programmable logic frameworks

• Latch and gate operations

• Coordination of signal processing and system outputs

System Integration

• CT/VT Module Dependency:
  The CPU module operates in close coordination with the CT/VT (Current Transformer/Voltage Transformer) module. It processes data captured by the CT/VT module and enables real-time monitoring and protection.

  ⚠️ Compatibility Note:
  The UR-9KH CPU module and CT/VT module must be from the same generation. Mixing newer CPU modules with older CT/VT modules (or vice versa) may result in incompatibility or system errors.

Modular UR System Architecture

The UR platform is a modular system, allowing users to configure their relay using multiple types of modules. These include:

• Power Supply Module

• Contact Input/Output Modules

• CT/VT Module

• Inter-relay Communication Module

• Transducer Input/Output Modules

• CPU Module (UR-9KH)

Each section of a UR product number reflects the installed modules. Segments marked as “XX” indicate that a module is not installed, while lettered/numbered segments represent included modules. Users can refer to GE’s Universal Relay product manuals for decoding part numbers and building configuration tables.