UFD203A101 ABB module

Brand: ABB

Product Series: REF / REM / RET Protection and Control Relay Series (or specialized distribution automation hardware)

Model: UFD203A101 (Part Number: UFD203A101)

Product Type: Digital Protection Relay / Multifunctional Control Module

UFD203A101 ABB module

Technical Parameters:

Processing Core: High-performance embedded digital signal processor (DSP) designed for real-time monitoring, microsecond-level fault detection, and protective logic execution.

Protection Functions: Supports comprehensive industrial protection profiles which typically include overcurrent, short-circuit, ground-fault, thermal overload, and phase-unbalance monitoring.

Measurement Capability: Onboard high-precision analog measuring channels for real-time tracking of phase currents, line voltages, system frequency, and power factor parameters.

Communication Interfaces: Integrated industry-standard communication ports supporting protocols such as Modbus RTU, Profibus, or SPA-bus to allow seamless interfacing with plant DCS or SCADA networks.

I/O Configuration: High-density arrangement of fast digital inputs for external trip/interlock status tracking and robust binary relay outputs for breaker tripping and alarm signaling.

User Interface: Front-panel LCD display combined with navigation keys and status LEDs for localized metering data reading, parameter configuration, and active fault triplog diagnostics.

Galvanic Isolation: Built-in high-voltage electrical isolation barriers across all measuring inputs and power connections to shield internal processing logic against harsh grid switching transients.

Environmental Resilience: Fully ruggedized industrial chassis configuration with conformal-coated electronic assemblies to withstand dust, high humidity, and severe electromagnetic interference (EMI).

Industrial Sectors:

Electrical Power Distribution Substation Utilities, Heavy Industrial Processing Plants (Chemical, Oil and Gas, Mining), Commercial Infrastructure Power Distribution, and Large-Scale Manufacturing Automation.

Application Scenarios:

1. Feeder and Cable Protection: Installed inside medium-voltage switchgear panels to act as a primary protection relay, constantly measuring load currents and instantly tripping circuit breakers if downstream overcurrent or ground-fault thresholds are breached.

2. Industrial Motor and Transformer Safeguarding: Deployed within motor control centers (MCC) or transformer feeder bays to protect large-scale machinery against prolonged thermal overloads, short-circuits, and phase imbalances, preventing catastrophic equipment insulation failure.

3. Substation Automation Network Interface: Integrated within electrical distribution networks to aggregate local electrical telemetry variables and breaker positions, pushing unified status matrices up to a centralized SCADA control room.

4. Emergency Backup Grid Interlocking: Used in facilities with localized co-generation or backup generator grids to execute synchronized bus-tie interlocking and fast-acting under-frequency load shedding when main utility grid connections fail.