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TIDA-00440

Leakage Current Measurement Reference Design for Determining Insulation Resistance

Design files

TIDA-00440

Design files

Overview

This reference design measures insulation resistance up to 100 MΩ. It has an on-board isolated 500-Vdc power supply and an isolated signal conditioning circuit to measure the leakage current. This design is useful to find leakage due to insulation breakdown in transformer and motor windings.

Features
  • Leakage current measurement circuit with option for programmable current sense amplifier and switchable shunt resistors
  • Range of measurement: 0 to 100 MΩ with accuracy of 5% (un-calibrated)
  • Test voltage level derived from IEEE 43-2000 (recommended practice for testing insulation resistance of rotating machinery)
  • On-board isolated 500-V power supply to measure insulation resistance
  • Provision for calibration resistor on board
  • Hardware support for start-of-frame detect allows implement IEEE1588 PTP
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Design guide — TIDA-00440
TIDU873A.PDF (2507 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-00440
TIDRDQ3.ZIP (248 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-00440
TIDRDQ2.PDF (69 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

download CAD/CAE symbol — TIDA-00440
TIDRDQ6.ZIP (6588 KB)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDA-00440
TIDCA04.ZIP (898 KB)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDA-00440
TIDRDQ5.ZIP (289 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-00440
TIDRDQ1.ZIP (848 KB)

Detailed schematic diagram for design layout and components

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Start development

Software

Simulation model

TIDM011 — TIDA-00440 Single Current Shunt Approach Simulation

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance

TIDM011 — TIDA-00440 Single Current Shunt Approach Simulation

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Latest version
Version: 01.00.00.00
Release date: Mar 20, 2018
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Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance
Simulation model

TIDM012 — TIDA-00440 Multiple Current Shunt Approach Simulation

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance

TIDM012 — TIDA-00440 Multiple Current Shunt Approach Simulation

close
Latest version
Version: 01.00.00.00
Release date: Mar 20, 2018
open-in-new

View all versions

Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance
Simulation model

TIDM013 — TIDA-00440 Resistive Divider Approach Simulation

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance

TIDM013 — TIDA-00440 Resistive Divider Approach Simulation

close
Latest version
Version: 01.00.00.00
Release date: Mar 20, 2018
open-in-new

View all versions

Hardware development
Reference design
TIDA-00440 — Leakage Current Measurement Reference Design for Determining Insulation Resistance

Technical documentation

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Type Title Date
* Design guide Leakage Current Measurement for Determining Insulation Resistance Design Guide (Rev. A) Apr 30, 2015
Selection guide Current Sense Amplifiers (Rev. E) Sep 20, 2021
Technical article How to detect insulation failures in electrical equipment – part 2 PDF | HTML May 2, 2016

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