GE Multilin UR Series UR9AH UR-9AH CPU Module

Product Overview

The GE UR-9AH is a CPU Module from GE Multilin, designed for the UR Series Universal Relay platform. This module provides the relay with computing power through logic algorithms, logic gates, timers, and latches essential for protection and control functions. The UR-9AH features RS485 communication and triple Ethernet ports for high-speed LAN connectivity, reducing latency in demanding substation automation applications.

The UR-9AH supports IEC 61850 Ed. 1 and Ed. 2 compliance, Routable GOOSE (R-GOOSE) for wide-area protection, and CyberSentry UR for robust network security. It also includes Phasor Measurement Unit (PMU) capabilities per IEEE C37.118 and IEC 61850-90-5 standards.

Key Features

• RS485 port supporting Modbus RTU and DNP communication protocols
• Three Ethernet ports for specific LAN support with reduced latency
• Routable GOOSE (R-GOOSE) enabling protective messages beyond the substation
• IEC 61850 Ed. 1 and Ed. 2 certified implementation
• CyberSentry UR cybersecurity aligned with NERC CIP standards
• Phasor Measurement Unit (PMU) per IEEE C37.118 and IEC 61850-90-5
• Full-color display for real-time visualization and phasor graphical display
• Modular plug-and-play design with common hardware platform

Technical Specifications

Applications

• Generator, transformer, and feeder protection
• Transmission line and distribution protection
• Capacitor bank and network stability control
• Motor protection, monitoring, metering, and control
• Utility substation and industrial plant automation
• Wide Area Protection and Control (WAPC) via R-GOOSE

Compatibility

The UR-9AH is fully compatible with the GE Multilin UR Series universal relay family. It is best paired with newer CT/VT modules to avoid hardware mismatch errors. Always ensure firmware compatibility when upgrading.

Installation Guide

1. Power Down: Completely de-energize the UR relay chassis. Never install or remove modules while energized.
2. ESD Protection: Wear a grounded ESD wrist strap before handling the CPU module.
3. Slot Verification: Confirm the CPU slot position per the relay manual.
4. Module Insertion: Slide the UR-9AH into the designated CPU slot, aligning the rear connector with the backplane.
5. Secure Mounting: Tighten the faceplate retention screws.
6. Configuration: Power on and configure via EnerVista UR Setup software. The CPU automatically reads configuration data from each module.

FAQ

Q: What does the "9A" order code signify?
A: The "9A" designates a CPU module with RS485 + triple Ethernet communication capabilities.

Q: What is R-GOOSE and why is it important?
A: Routable GOOSE (R-GOOSE) allows protective GOOSE messages to travel beyond the local substation LAN over WAN networks, enabling cost-effective Wide Area Protection without dedicated communication channels.

Q: Is the UR-9AH compatible with older CT/VT modules?
A: The UR-9AH is best used with newer CT/VT modules. Pairing with old CT/VT modules may result in hardware mismatch errors. Always verify compatibility in the UR manual.

Q: What cybersecurity features are included?
A: CyberSentry UR provides role-based access control, password policies, audit logs, IEC 62351-compliant encryption, and secure management ports.

Selection Tips

• Choose UR-9AH when you need RS485 + triple Ethernet with IEC 61850 and R-GOOSE support.
• For RS485 + 10/100Base-T Ethernet, consider the UR-9NH.
• For fiber optic Ethernet, consider the UR-9GH.
• Always verify CT/VT module compatibility when selecting a CPU module.

Ordering Information