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GE UR6AH UR-6AH Universal Relay Chassis Assembly

Configured for modular protective relay housing and electrical signal routing in the GE Multilin Universal Relay (UR) Series platform, the GE UR6AH (UR6AH Universal Relay Chassis Assembly) provides direct physical and electrical execution for plug-in protection and control modules.

Hardware Specifications

Parameter	Specification
Model	UR6AH
Brand	GE Multilin
Origin	United States
Product Series	Universal Relay (UR) Series
Module Type	6U Rack / Chassis Assembly Unit
Rack Height	6U
Mounting Format	19-inch rack mount, panel mount options
Slot Capacity	Up to 12 plug-in module slots
Enclosure Rating	IP40 front panel, IP20 rear terminals
Cooling Method	Natural convection, fanless design
Power Supply Range	110-250 VDC / 110-230 VAC or 24-48 VDC options
Power Consumption	Typical 15-35 W depending on installed modules
Operating Temp	-40 deg C to +60 deg C
Storage Temp	-40 deg C to +85 deg C
Relative Humidity	Up to 95% non-condensing
Communication Interfaces	Ethernet, fiber optic, serial communication
Supported Protocols	IEC 61850, Modbus RTU/TCP, DNP 3.0, IEC 60870-5-103/104
Dielectric Withstand	IEC 60255-5 / IEEE C37.90

Profinet / EtherNet-IP Deterministic Network and I/O Architecture

The GE UR6AH chassis assembly uses a high-density backplane structure designed for modular insertion of CPU processors, power supply units, CT/VT input cards, digital I/O modules, and communication interface cards. The internal card architecture provides defined electrical routing between protection modules and external field connections.

The backplane supports configurable I/O density scaling through installation of different UR Series modules. Communication modules provide Ethernet-based data exchange through interfaces including RJ45 and fiber optic connections, supporting IEC 61850 messaging functions such as GOOSE and Sampled Values.

Firmware flash compatibility is dependent on the installed UR Series processor and application module combination. Hardware replacement and module insertion require verification of compatible firmware revisions and system configuration files.

Frequently Asked Questions

Q: Does the UR6AH chassis support hot-swap module replacement?
A: The UR6AH is a modular chassis assembly, but module insertion and removal procedures must follow GE Multilin UR Series maintenance requirements. Power isolation and configuration verification are required before replacing installed hardware.

Q: What modules can be installed in the UR6AH chassis?
A: The chassis supports UR Series plug-in modules including CPU processors, power supplies, CT/VT input modules, digital input/output modules, and communication interface cards.

Q: How is communication redundancy implemented in the UR6AH platform?
A: Network redundancy depends on the installed communication modules and configured protocols. Supported redundancy functions include PRP, HSR, and RSTP for applicable communication configurations.

Field Installation Guidelines

• Install the chassis in a compatible 19-inch rack or approved panel mounting structure.
• Maintain separation between low-level communication wiring and high-energy CT/VT field wiring to reduce electromagnetic interference.
• Connect protective earth and chassis grounding according to site electrical standards before energizing the equipment.
• Use shielded communication cables where required by the selected protocol and terminate cable shields according to industrial grounding practice.
• Verify power supply module voltage range before connection to the DC or AC supply source.
• Confirm module seating, backplane connector engagement, and mechanical locking mechanisms before system startup.
• Review firmware compatibility and application configuration before replacing processor or communication modules.

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