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Megger MFT1800 series - User Manual

Megger MFT1800 series
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MFT1800 series
Multifunction testers
User Guide

Table of Contents

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Summary

Safety

Safety Warnings

Essential safety warnings and precautions for instrument operation and testing procedures.

Live Earth Safety Precautions

Specific safety measures for working with 'live' earths, including protective equipment and procedures.

Symbols Used on the Instrument

Explanation of safety and hazard icons found on the instrument's casing.

Introduction to the MFT1800 Series

Overview of the MFT1800 Series

General introduction to the MFT1800 series multifunction tester and its capabilities.

Front Panel and Controls

Identification and description of the front panel controls and buttons of the MFT1800 series.

Instrument Display

Details and explanations of the information presented on the instrument's display screen.

Display Symbols Explained

Explanation of various symbols and icons that can appear on the instrument's display.

Waste Electrical and Electronic Equipment

Information regarding the disposal of the product in compliance with WEEE regulations.

Battery and Fuse Location, Fitting, and Replacement

Guidance on locating, fitting, and replacing batteries and fuses in the instrument.

Operation Procedures

General Operation for All Models

Basic operational procedures applicable to all MFT1800 series models.

Switching On the Instrument

Instructions for powering on the MFT1800 series instrument.

Switching Off the Instrument

Instructions for powering off the MFT1800 series instrument.

Mode Button Functions

Details the functionality of the Mode button based on the selected test function.

Test Inhibit Conditions

Conditions under which testing will be inhibited for various test modes.

Voltage, Frequency, Current, and Temperature Measurement

Making a Voltage Measurement

Step-by-step guide on how to perform voltage measurements using the instrument.

Frequency Measurement

Procedure for measuring the frequency of a live circuit.

Phase Rotation Determination

How to determine phase rotation on a 3-phase supply using the instrument.

Leakage Current Measurement

Instructions for measuring leakage current using an optional clamp accessory.

Temperature Measurement (MFT1815 Excluded)

Guide to measuring temperature with a thermocouple transducer.

Using the Switch Probe

Using the remote switch probe for measurements in V/mV/°C modes.

Continuity and Resistance Measurement

Nulling Test Lead Resistance

Procedure for nulling test lead resistance to ensure accurate continuity readings.

Making a Continuity Measurement

Step-by-step guide to performing continuity measurements.

Storing and Downloading Results

Instructions for storing and downloading test results to compatible devices.

Continuity Buzzer ON;OFF

How to enable or disable the continuity test buzzer.

Switch Probe (SP5) for Continuity

Using the SP5 switch probe for continuity/resistance measurements.

Buzzer Threshold Settings

Setting the resistance threshold for the continuity buzzer.

Measurement Methods and Sources of Error

Details on measurement methods and potential sources of error for continuity tests.

Insulation Resistance Testing

Making an Insulation Measurement

Step-by-step guide to performing insulation resistance measurements.

Insulation Test Lock Function

How to lock the insulation test ON for continuous testing.

Measurement Methods and Error Sources

Explains measurement methods and potential errors for insulation tests.

Loop Impedance Testing

Range Selection and Test Leads

Selecting appropriate ranges and connecting test leads for loop impedance tests.

Phase to Earth L-E Circuits

Procedure for performing phase-to-earth loop impedance tests.

Loop Test Options in L-PE Mode

Describes the three loop test options (3Lo, 2Hi, 2Lo) available in L-PE mode.

L-N or L-L Circuits

Procedure for performing loop impedance tests on L-N or L-L circuits.

Z, Zmax, Zref and R1+R2 Values

Explanation of Z, Zmax, Zref, and R1+R2 values in loop impedance testing.

Ze Measurements at the Origin

How to measure Ze (earth loop impedance) at the origin.

Zs and Zdb Loop Measurements Without RCD

Performing Zs and Zdb loop measurements without RCDs.

Earth Loop Measurements With an RCD

Testing earth loop impedance on circuits with RCDs.

Phase to Neutral or Phase to Phase Testing

Performing phase-to-neutral or phase-to-phase loop impedance tests.

Prospective Fault Current and Short Circuit Calculation

Calculating PFC and PSCC during loop impedance tests.

Confidence Meter for Non-Trip (3 Lo) Loop Tests

Understanding the Confidence Meter for non-trip loop impedance tests.

3 Lo Loop Impedance Measurement

Procedure for performing 3Lo loop impedance measurements.

Measurement Methods and Sources of Error

Methods and potential error sources for loop impedance testing.

RCD or GFCI Testing

Making an RCD Measurement

Step-by-step guide to performing RCD measurements.

Selecting the RCD Type

How to select the appropriate RCD type (AC, A, S, B) for testing.

1;2 x I RCD Current Rating (No-Trip Test)

Performing a no-trip test at half the rated RCD trip current.

1 x I RCD Current Rating (Tripping Test)

Performing a tripping test at the rated RCD current.

2 x I RCD Current Rating (MFT1825;1835 Only)

Performing a 2xI tripping test on 30mA RCDs (MFT1825/1835).

5 x I RCD Current Rating (Tripping Test)

Performing a 5xI tripping test on 30 mA RCDs.

Ramp Test Procedure

Measuring RCD trip current by increasing test current incrementally.

Fast Ramp Test

Performing a faster ramp test with fewer current steps.

Type A (DC Sensitive) RCD Test

Testing Type A RCDs sensitive to pulsed DC fault currents.

Type B (Pure DC) RCD Test (Not MFT1815)

Testing Type B RCDs sensitive to pure DC fault currents.

Variable RCDs Testing (Not MFT1815)

Testing RCDs with variable trip current settings.

AUTO RCD Testing Sequence

Performing an automated sequence of RCD tests.

3 Phase RCD Testing

Procedure for testing RCDs in 3-phase installations.

Touch Voltage Display

Display and interpretation of touch voltage during RCD tests.

Measurement Methods and Sources of Error

Measurement methods and potential errors for RCD testing.

Useful Information for RCD Testing

General tips and recommendations for RCD testing.

Testing of Electric Vehicle Charge Point RCDs

Earth Resistance Measurement

Connection Terminals for Earth Testing

Identification of the MFT's connection terminals for earth resistance testing.

Touch Voltage Limit Settings

Setting the touch voltage limit for earth resistance measurements.

Two-Pole Resistance Measurement

Procedure for performing two-pole earth resistance measurements.

Three-Terminal Resistance Measurement

Procedure for performing three-terminal earth resistance measurements.

Three-Terminal Measurement Using ART

Performing three-terminal earth resistance using the ART method.

Two-Clamp Stake-less Measurement

Performing stake-less earth resistance measurements using two clamps.

Setup Options Configuration

Warning Messages

Startup Warnings

Displays and explanations for warnings shown during instrument startup.

Battery Status Warnings

Warning messages related to the instrument's battery status.

Battery Charger Warnings

Warning messages related to the battery charging process.

Fuse Warning Indicator

Indicates when a fuse has blown in the instrument.

Invalid Rotary Switch Setting Error

Error message for incorrect rotary switch configurations.

Continuity Test Warnings

Warning messages specific to continuity testing.

Insulation Test Warnings

Warning messages specific to insulation testing.

RCD;GFCI Test Warnings

Warning messages related to RCD or GFCI testing.

RCD Range Selection Errors

Error messages for incorrect RCD range selections.

Loop Test Warning Messages

Warning messages encountered during loop testing.

Earth Test Warning Messages

Warning messages specific to earth testing.

Test Will Not Start Messages

Messages indicating why a test cannot be initiated.

Appendix A: Test Results Management

Storing Test Results Internally

Procedure for saving test results into the instrument's internal memory.

Deleting Test Results from Memory

Steps for removing stored test results from the instrument's memory.

Recalling Test Results to Display

How to retrieve and view previously stored test results on the instrument.

Sending Stored Results via Bluetooth

Instructions for transmitting stored test data wirelessly via Bluetooth.

Sending Individual Test Results (Blobbing)

Method for sending specific test results for certification purposes.

Sending Loop Test Results (L-L;L-N)

Sending loop test results for L-L/L-N connections via Bluetooth.

Sending RCD Test Results via Bluetooth

Sending RCD test results via Bluetooth.

Sending Earth Test Results via Bluetooth

Sending earth test results via Bluetooth.

Appendix B: Downloading Data via Bluetooth

Bluetooth Pairing with PC or Laptop

Steps for pairing the MFT with a PC or laptop via Bluetooth.

Appendix C: Installation Category Definitions

Appendix D: Safe Working Practice

Appendix E: Cleaning and Maintenance

Appendix F: Earth Resistance Testing Principles

Principle of Operation (Three-Terminal Resistance Measurement)

Explains the principle of three-terminal earth resistance measurement.

Principle of Operation (ART Method)

Explains the ART method for three-terminal earth resistance testing.

Principle of Operation (Two-Clamp Stake-less Measurement)

Explains the principle of two-clamp stake-less earth resistance measurement.

Specifications

Accuracy Overview

Details the accuracy specifications for various measurements.

Insulation Test Accuracy

Accuracy specifications for insulation resistance testing.

Continuity and Resistance Accuracy

Accuracy specifications for continuity and resistance measurements.

Loop Test 2 Hi Accuracy

Accuracy specifications for 2Hi loop impedance testing.

Loop Test 3 Lo, 2 Lo Accuracy

Accuracy specifications for 3Lo and 2Lo loop impedance testing.

RCD Test Accuracy

Accuracy specifications for RCD testing procedures.

Voltage Measurement Accuracy

Accuracy specifications for voltage measurements.

Frequency Measurement Accuracy

Accuracy specifications for frequency measurements.

Earth Test Range Accuracy

Accuracy specifications for earth resistance testing ranges.

Current (Clamp Meter) Accuracy

Accuracy specifications for current measurements via clamp meter.

mV Sensor Input Accuracy

Accuracy specifications for mV sensor input.

Internal Memory and Bluetooth Specs

Specifications for internal memory and Bluetooth communication.

Power Consumption Specifications

Specifications detailing the instrument's power consumption.

Temperature Measurement Accuracy (Module)

Accuracy specifications for temperature measurement via module.

Environmental Specification

Environmental operating and storage specifications for the instrument.

Accessories

Repair and Warranty Information

Calibration, Repair, and Spare Parts

Procedures and contact information for instrument calibration, repair, and spare parts.

Summary

Safety

Safety Warnings

Essential safety warnings and precautions for instrument operation and testing procedures.

Live Earth Safety Precautions

Specific safety measures for working with 'live' earths, including protective equipment and procedures.

Symbols Used on the Instrument

Explanation of safety and hazard icons found on the instrument's casing.

Introduction to the MFT1800 Series

Overview of the MFT1800 Series

General introduction to the MFT1800 series multifunction tester and its capabilities.

Front Panel and Controls

Identification and description of the front panel controls and buttons of the MFT1800 series.

Instrument Display

Details and explanations of the information presented on the instrument's display screen.

Display Symbols Explained

Explanation of various symbols and icons that can appear on the instrument's display.

Waste Electrical and Electronic Equipment

Information regarding the disposal of the product in compliance with WEEE regulations.

Battery and Fuse Location, Fitting, and Replacement

Guidance on locating, fitting, and replacing batteries and fuses in the instrument.

Operation Procedures

General Operation for All Models

Basic operational procedures applicable to all MFT1800 series models.

Switching On the Instrument

Instructions for powering on the MFT1800 series instrument.

Switching Off the Instrument

Instructions for powering off the MFT1800 series instrument.

Mode Button Functions

Details the functionality of the Mode button based on the selected test function.

Test Inhibit Conditions

Conditions under which testing will be inhibited for various test modes.

Voltage, Frequency, Current, and Temperature Measurement

Making a Voltage Measurement

Step-by-step guide on how to perform voltage measurements using the instrument.

Frequency Measurement

Procedure for measuring the frequency of a live circuit.

Phase Rotation Determination

How to determine phase rotation on a 3-phase supply using the instrument.

Leakage Current Measurement

Instructions for measuring leakage current using an optional clamp accessory.

Temperature Measurement (MFT1815 Excluded)

Guide to measuring temperature with a thermocouple transducer.

Using the Switch Probe

Using the remote switch probe for measurements in V/mV/°C modes.

Continuity and Resistance Measurement

Nulling Test Lead Resistance

Procedure for nulling test lead resistance to ensure accurate continuity readings.

Making a Continuity Measurement

Step-by-step guide to performing continuity measurements.

Storing and Downloading Results

Instructions for storing and downloading test results to compatible devices.

Continuity Buzzer ON;OFF

How to enable or disable the continuity test buzzer.

Switch Probe (SP5) for Continuity

Using the SP5 switch probe for continuity/resistance measurements.

Buzzer Threshold Settings

Setting the resistance threshold for the continuity buzzer.

Measurement Methods and Sources of Error

Details on measurement methods and potential sources of error for continuity tests.

Insulation Resistance Testing

Making an Insulation Measurement

Step-by-step guide to performing insulation resistance measurements.

Insulation Test Lock Function

How to lock the insulation test ON for continuous testing.

Measurement Methods and Error Sources

Explains measurement methods and potential errors for insulation tests.

Loop Impedance Testing

Range Selection and Test Leads

Selecting appropriate ranges and connecting test leads for loop impedance tests.

Phase to Earth L-E Circuits

Procedure for performing phase-to-earth loop impedance tests.

Loop Test Options in L-PE Mode

Describes the three loop test options (3Lo, 2Hi, 2Lo) available in L-PE mode.

L-N or L-L Circuits

Procedure for performing loop impedance tests on L-N or L-L circuits.

Z, Zmax, Zref and R1+R2 Values

Explanation of Z, Zmax, Zref, and R1+R2 values in loop impedance testing.

Ze Measurements at the Origin

How to measure Ze (earth loop impedance) at the origin.

Zs and Zdb Loop Measurements Without RCD

Performing Zs and Zdb loop measurements without RCDs.

Earth Loop Measurements With an RCD

Testing earth loop impedance on circuits with RCDs.

Phase to Neutral or Phase to Phase Testing

Performing phase-to-neutral or phase-to-phase loop impedance tests.

Prospective Fault Current and Short Circuit Calculation

Calculating PFC and PSCC during loop impedance tests.

Confidence Meter for Non-Trip (3 Lo) Loop Tests

Understanding the Confidence Meter for non-trip loop impedance tests.

3 Lo Loop Impedance Measurement

Procedure for performing 3Lo loop impedance measurements.

Measurement Methods and Sources of Error

Methods and potential error sources for loop impedance testing.

RCD or GFCI Testing

Making an RCD Measurement

Step-by-step guide to performing RCD measurements.

Selecting the RCD Type

How to select the appropriate RCD type (AC, A, S, B) for testing.

1;2 x I RCD Current Rating (No-Trip Test)

Performing a no-trip test at half the rated RCD trip current.

1 x I RCD Current Rating (Tripping Test)

Performing a tripping test at the rated RCD current.

2 x I RCD Current Rating (MFT1825;1835 Only)

Performing a 2xI tripping test on 30mA RCDs (MFT1825/1835).

5 x I RCD Current Rating (Tripping Test)

Performing a 5xI tripping test on 30 mA RCDs.

Ramp Test Procedure

Measuring RCD trip current by increasing test current incrementally.

Fast Ramp Test

Performing a faster ramp test with fewer current steps.

Type A (DC Sensitive) RCD Test

Testing Type A RCDs sensitive to pulsed DC fault currents.

Type B (Pure DC) RCD Test (Not MFT1815)

Testing Type B RCDs sensitive to pure DC fault currents.

Variable RCDs Testing (Not MFT1815)

Testing RCDs with variable trip current settings.

AUTO RCD Testing Sequence

Performing an automated sequence of RCD tests.

3 Phase RCD Testing

Procedure for testing RCDs in 3-phase installations.

Touch Voltage Display

Display and interpretation of touch voltage during RCD tests.

Measurement Methods and Sources of Error

Measurement methods and potential errors for RCD testing.

Useful Information for RCD Testing

General tips and recommendations for RCD testing.

Testing of Electric Vehicle Charge Point RCDs

Earth Resistance Measurement

Connection Terminals for Earth Testing

Identification of the MFT's connection terminals for earth resistance testing.

Touch Voltage Limit Settings

Setting the touch voltage limit for earth resistance measurements.

Two-Pole Resistance Measurement

Procedure for performing two-pole earth resistance measurements.

Three-Terminal Resistance Measurement

Procedure for performing three-terminal earth resistance measurements.

Three-Terminal Measurement Using ART

Performing three-terminal earth resistance using the ART method.

Two-Clamp Stake-less Measurement

Performing stake-less earth resistance measurements using two clamps.

Setup Options Configuration

Warning Messages

Startup Warnings

Displays and explanations for warnings shown during instrument startup.

Battery Status Warnings

Warning messages related to the instrument's battery status.

Battery Charger Warnings

Warning messages related to the battery charging process.

Fuse Warning Indicator

Indicates when a fuse has blown in the instrument.

Invalid Rotary Switch Setting Error

Error message for incorrect rotary switch configurations.

Continuity Test Warnings

Warning messages specific to continuity testing.

Insulation Test Warnings

Warning messages specific to insulation testing.

RCD;GFCI Test Warnings

Warning messages related to RCD or GFCI testing.

RCD Range Selection Errors

Error messages for incorrect RCD range selections.

Loop Test Warning Messages

Warning messages encountered during loop testing.

Earth Test Warning Messages

Warning messages specific to earth testing.

Test Will Not Start Messages

Messages indicating why a test cannot be initiated.

Appendix A: Test Results Management

Storing Test Results Internally

Procedure for saving test results into the instrument's internal memory.

Deleting Test Results from Memory

Steps for removing stored test results from the instrument's memory.

Recalling Test Results to Display

How to retrieve and view previously stored test results on the instrument.

Sending Stored Results via Bluetooth

Instructions for transmitting stored test data wirelessly via Bluetooth.

Sending Individual Test Results (Blobbing)

Method for sending specific test results for certification purposes.

Sending Loop Test Results (L-L;L-N)

Sending loop test results for L-L/L-N connections via Bluetooth.

Sending RCD Test Results via Bluetooth

Sending RCD test results via Bluetooth.

Sending Earth Test Results via Bluetooth

Sending earth test results via Bluetooth.

Appendix B: Downloading Data via Bluetooth

Bluetooth Pairing with PC or Laptop

Steps for pairing the MFT with a PC or laptop via Bluetooth.

Appendix C: Installation Category Definitions

Appendix D: Safe Working Practice

Appendix E: Cleaning and Maintenance

Appendix F: Earth Resistance Testing Principles

Principle of Operation (Three-Terminal Resistance Measurement)

Explains the principle of three-terminal earth resistance measurement.

Principle of Operation (ART Method)

Explains the ART method for three-terminal earth resistance testing.

Principle of Operation (Two-Clamp Stake-less Measurement)

Explains the principle of two-clamp stake-less earth resistance measurement.

Specifications

Accuracy Overview

Details the accuracy specifications for various measurements.

Insulation Test Accuracy

Accuracy specifications for insulation resistance testing.

Continuity and Resistance Accuracy

Accuracy specifications for continuity and resistance measurements.

Loop Test 2 Hi Accuracy

Accuracy specifications for 2Hi loop impedance testing.

Loop Test 3 Lo, 2 Lo Accuracy

Accuracy specifications for 3Lo and 2Lo loop impedance testing.

RCD Test Accuracy

Accuracy specifications for RCD testing procedures.

Voltage Measurement Accuracy

Accuracy specifications for voltage measurements.

Frequency Measurement Accuracy

Accuracy specifications for frequency measurements.

Earth Test Range Accuracy

Accuracy specifications for earth resistance testing ranges.

Current (Clamp Meter) Accuracy

Accuracy specifications for current measurements via clamp meter.

mV Sensor Input Accuracy

Accuracy specifications for mV sensor input.

Internal Memory and Bluetooth Specs

Specifications for internal memory and Bluetooth communication.

Power Consumption Specifications

Specifications detailing the instrument's power consumption.

Temperature Measurement Accuracy (Module)

Accuracy specifications for temperature measurement via module.

Environmental Specification

Environmental operating and storage specifications for the instrument.

Accessories

Repair and Warranty Information

Calibration, Repair, and Spare Parts

Procedures and contact information for instrument calibration, repair, and spare parts.

Megger MFT1800 series Specifications

General IconGeneral
TypeMultifunction Tester
Continuity Test Current200 mA
RCD Test Current10 mA, 30 mA, 100 mA, 300 mA, 500 mA, 1000 mA
RCD Trip Time MeasurementYes
Frequency MeasurementYes
IP RatingIP54
PSC/PFC Range20 kA
RCD TestingYes
Voltage MeasurementYes
Voltage Measurement Range0 V to 600 V
DisplayLCD
Power SourceBattery
Safety StandardsIEC 61010-1
Insulation Resistance Test Voltage250V, 500V, 1000V
Insulation Resistance Range0.01 MΩ to 1000 MΩ
Continuity Measurement Range0.01 Ω to 20 kΩ

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