Megger BM224 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 BM224 Specifications

General

Test Voltage	250 V, 500 V, 1000 V
Display	LCD
Voltage Measurement	0 to 600 V AC/DC
Power Source	8 x AA batteries
Power Supply	Batteries
Operating Temperature	-10 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Measurement Range	0.1 MΩ to 2000 MΩ
Accuracy	± 5 %
Test Current	1 mA

Summary

SAFETY WARNINGS

Symbols Used on the Instrument

Explains symbols displayed on the instrument for user guidance.

OPERATION

Preliminary Test Lead Check

Instructions for visually inspecting and checking test leads before use.

Backlight Operation

How to turn the instrument's backlight on and off.

Continuity Testing

Step-by-step guide for performing continuity tests.

Continuity Beeper

Description of the audible continuity signal and its behavior.

SPECIFICATION

Insulation Specifications

Technical details for insulation testing including accuracy and ranges.

Continuity Specifications

Technical details for continuity testing including accuracy and ranges.

Environmental Conditions

Specifies operating and storage temperature and humidity limits.

General Specifications

Overall device characteristics like display, auto shut-off, and warnings.

ACCESSORIES

Supplied Accessories

Lists the accessories that come included with the instrument.

Optional Accessories

Lists optional accessories available for purchase.

Publications Available

Lists other available publications related to the instrument.

REPAIR AND WARRANTY

Instrument Repair and Spare Parts

Information on obtaining service and spare parts for the instrument.

Approved Repair Companies

Lists authorized companies for instrument repair services.

Returning an Instrument for Repair

Guidelines for sending the instrument back for repair.