GE

1. Full Model & Model Breakdown

Full Model Name: GE UR-6AH Multilin UR6AH Digital IO Module

GE: Brand (General Electric; its relay protection division now belongs to Emerson)
Multilin: Famous product line brand of GE for relay protection and Intelligent Electronic Devices (IEDs)
UR: Universal Relay platform series
6AH: Specific model code of the digital expansion module
UR-6AH / UR6AH: Complete part number; both writing formats are commonly accepted
Digital IO Module: Digital Input and Output Module

UR-6AH is an expansion module for Multilin UR series protection relays, used to expand binary channels of UR-series relay protection equipment.

Provides extended digital input and digital output channels for GE Multilin UR series universal relay devices.
Digital Input Channels: Capture external contact status signals, including circuit breaker positions, disconnector status, alarm contacts and other active/passive binary signals.
Digital Output Channels: Equipped with relay contacts to output switching commands for external circuits, trip signals and alarm indicators.
Collects switching status in real time and transmits signals to the UR main unit for logic processing.
Receives control commands issued by the main protection device, and executes tripping, alarming and interlocking operations via relay outputs.
Supports channel fault diagnosis, capable of detecting circuit abnormalities and generating event records.
Communicates with the UR main controller through internal bus for real-time signal exchange and expands the original IO capacity of the device.

Compatible with the full range of GE Multilin UR series microprocessor-based relay protection devices.
Application fields: Power system protection and monitoring in substations, hydropower plants, thermal power plants and industrial power distribution rooms.
Expands the quantity of binary signal acquisition and control contacts of protection devices.
Used for circuit breaker status monitoring, fault alarm output, protection trip interlock and sequence control of electrical equipment.
Serves as standard spare parts for power relay protection system capacity expansion and equipment maintenance replacement.
Suitable for various power monitoring & protection scenarios, including transformer protection, line protection, motor protection and busbar protection.