Megger BM220 Series User Manual

Insulation &
Continuity Testers
MEGGER
®
BM220 Series
User Guide
Guide de l’utilisateur
Gebrauchsanleitung
Guía del Usuario
SAFETY WARNINGS
✱ Safety warnings and precautions must be read and
understood before the instrument is used. They must be
observed during use.
✱ The circuit under test must be switched off, de -
energised and isolated before Insulation or Continuity
tests are made.
✱ The test button must not be held down while connecting
the test leads or while changing ranges. (May cause
‘Live Circuit Warning‘ to become inoperable).
✱ The Voltage warning does not function if OFF or
is selected.
✱ During an insulation test, connections must not be
touched.
✱ After insulation tests, capacitive circuits must be allowed
to discharge before disconnecting the test leads.
✱ Test leads, prods and crocodile clips must be in good
order; clean, and with no broken or cracked insulation.
✱ Replacement fuses must be of the correct size, type and
rating.
NOTE
THE INSTRUMENTS MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT
PERSONS
.
Symbols used on the instrument:
Caution: risk of electric shock
Caution: refer to accompanying notes
Equipment protected throughout by Double Insulation (Class II)
Equipment complies with relevant EU Directives

Megger BM220 Series Specifications

General

Brand	Megger
Model	BM220 Series
Category	Test Equipment
Language	English

Summary

Safety Warnings

General Safety Precautions

Covers essential safety warnings, circuit isolation, test button usage, voltage warning, live circuit handling, and fuse replacement.

Operation

Preliminary Test Lead Check

Inspect test leads, prods, and crocodile clips for damage or broken insulation before use.

Backlight Operation

Guide to activating, using, and deactivating the instrument's backlight for visibility.

Continuity Testing Procedure

Steps for performing continuity tests, including power on, lead zeroing, and measurement.

Continuity Beeper Functionality

How the beeper indicates continuity at low resistances and provides feedback for higher resistances.

Insulation Testing Procedure

Specifications

Insulation Test Specifications

Technical specifications for insulation testing, including voltage, current, and accuracy.

Continuity Test Specifications

Technical specifications for continuity testing, including resistance ranges and accuracy.

Environmental Conditions

Operating conditions, temperature ranges, and humidity limits for the instrument.

General Instrument Specifications

Details on display, auto shut-off, live circuit warning, and default voltmeter settings.

Instrument Specifications

Power Supply and Battery Life

Information on power source, battery type, expected battery life, and handling.

Fuse and Safety Standards

Details on fuse specifications, safety standards compliance, and EMC.

Weight, Dimensions, and Cleaning

Physical characteristics of the instrument and cleaning instructions.

Repair and Warranty Information

Instrument Care and Warranty

Guidelines for handling static-sensitive devices and warranty voidance.

Service and Spare Parts Contact

Contact information for Megger Limited and Megger Inc. for service and spare parts.

Returning an Instrument for Repair

Procedure for returning an instrument for repair, including shipping and customs information.

Health and Safety Legislation

Reminder on risk assessments for electrical work and use of fused test leads.

Technical Data and Safety

General Technical Data

Details on display, auto shut-off, voltage warning, and default voltmeter ranges.

Power Supply and Battery Life

Information on power source, battery type, expected battery life, and handling.

Fuse and Safety Standards

Details on fuse specifications, safety standards compliance, and EMC.