REF3450QDBVRQ1

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REF3450QDBVRQ1

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REF34-Q1 AUTOMOTIVE LOW-DRIFT LO

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Specifications

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Overview

Description

REF3450QDBVRQ1 is an ABB Relion protection relay, part of the REF3450 family, for protection, control and measurement in medium‑voltage (MV) networks. It provides fast, accurate protection for feeders and busbars with functions such as overcurrent/earth fault, distance, differential, transformer and motor protection, plus metering and disturbance/event recording. It supports modern substation communications (IEC 61850, DNP3, Modbus) and can be configured via front panel, PC software, or remote interfaces. The QDBVRQ1 suffix identifies a specific hardware/firmware variant with particular I/O and communication options for a given project. Typical uses include MV feeder, transformer, and switchgear protection in substations, offering high reliability and easy integration into substation automation schemes.

Equivalent

Direct drop-in equivalents for REF3450QDBVRQ1 (2.5V, automotive-grade voltage reference) include:
- Analog Devices ADR3450
- STMicroelectronics REF5025
Verify pinout, package (DBV), and automotive ratings with TI’s cross-reference tool to ensure full match in tempco, accuracy, and current capability.

Pinout

- Pin count: 8 pins (DBV/VSSOP-8 package)
- Function: Fixed 2.5-V voltage reference with a buffered output. Pins include V+ (supply), GND, VOUT (buffered reference), BYP (bypass), with remaining pins typically NC.

Manufacturer

- Manufacturer: Texas Instruments (TI).
- About the company: TI is a multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits for a wide range of markets including automotive, communications, consumer electronics, and industrial applications.

Application

REF3450QDBVRQ1 is a protection/automation relay for electrical power systems. Typical applications:
- Protection and control of transformers, feeders and motors in medium/high-voltage switchgear
- Substation automation and remote monitoring
- Power quality monitoring, event recording and fault analysis
- Integration with energy management, SCADA and microgrid systems
- Commissioning, testing and diagnostics in industrial or utility environments

Package

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