AEMC Megohmmeters 6522 User manual

Megohmmeters
Model 6522 & 6524
CHAUVIN ARNOUX GROUP
®
ENGLISH
User Manual
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certifies that this instrument has been calibrated using
standards and instruments traceable to international
standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be requested at
the time of purchase, or obtained by returning the
instrument to our repair and calibration facility, for a
nominal charge.
Serial #: ________________________________
Catalog #: 2155.51 / 2155.52
Model #: 6522 / 6524
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments

Copyright © Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments. All rights reserved.
No part of this documentation may be reproduced in any form or by any means (including electronic storage and retrieval
or translation into any other language) without prior agreement and written consent from Chauvin Arnoux®, Inc., as
governed by United States and International copyright laws.
This documentation is provided “as is,” without warranty of any kind, express, implied, or otherwise. Chauvin Arnoux®,
Inc. has made every reasonable effort to ensure that this documentation is accurate; but does not warrant the accuracy or
completeness of the text, graphics, or other information contained in this documentation. Chauvin Arnoux®, Inc. shall not
be liable for any damages, special, indirect, incidental, or inconsequential; including (but not limited to) physical, emotional
or monetary damages due to lost revenues or lost prots that may result from the use of this documentation, whether or
not the user of the documentation has been advised of the possibility of such damages.
Chauvin Arnoux®, Inc and AEMC® are registered trademarks of AEMC®Instruments.

Thank you for purchasing the Megohmmeter Model 6522 or 6524.
For best results from your instrument:
■Read these operating instructions carefully
■Comply with the precautions for use
WARNING, risk of DANGER! The operator must refer to these
instructions whenever this danger symbol appears
WARNING, risk of electric shock. The voltage applied to parts
marked with this symbol may be hazardous
Equipment is protected by double insulation
> 700V The voltage on the terminals must not exceed 700V
Ground/Earth
Battery
Information or useful tip
Remote test probe
The product is recyclable in accordance with standard ISO14040
This instrument exceeds regulatory requirements with respect to
recycling and reuse
Indicates conformity with European directives, in particular LVD and
EMC
Indicates that, in the European Union, the instrument must undergo
selective disposal in compliance with Directive WEEE 2002/96/EC.
This instrument must not be treated as household waste
Denition of Measurement Categories (CAT)
■CAT II corresponds to measurements taken on circuits directly connected to
low-voltage installations.
Example: power supply to electro-domestic devices and portable tools.
■CAT III corresponds to measurements on building installations.
Example: distribution panel, circuit-breakers, machines or xed industrial
devices.
■CAT IV corresponds to measurements taken at the source of low-voltage
installations.
Example: power feeders and protection devices.

PRECAUTIONS FOR USE
This instrument is compliant with safety standard IEC 61010-2-030, and the leads
are compliant with IEC 61010-031, for voltages up to 600V in CAT IV or 1000V in
CAT III.
Failure to observe the following safety instructions may result in electric shock,
re, explosion, and damage to the instrument and installation.
■Carefully read and understand all precautions for use.
■Be aware of all electrical hazards when using this instrument.
■ Using this instrument other than as specied may compromise its user
protection features.
■The safety of any system in which this instrument is incorporated is the
responsibility of the integrator of the system.
■ This instrument can be used on CAT IV installations, for voltages
not exceeding 600VRMS with respect to ground or 700VRMS maximum
between terminals.
■Do not use the instrument on networks whose voltage or category
exceeds those specied in this manual.
■Observe all environmental conditions of use (see § 3).
■Except for voltage measurements, take no measurements on
electrically “live” systems.
■Do not use the instrument if it appears damaged, incomplete, or poorly
closed.
■Before each use, check the condition of the insulation on the leads,
housing, and accessories. Any part on which the insulation is
deteriorated (even partially) must be set aside for repair or scrapping.
■Using the instrument without its battery compartment cover may result
in electric shock to the user.
■Before using your instrument, ensure it is completely dry.
■Use only the leads and accessories supplied. The use of leads (or
other accessories) of a lower voltage rating or category limits the use
of the instrument/leads (or accessories) combination to the lowest
category and service voltage.
■When handling the leads, test probes, and alligator clips, keep your
ngers behind the physical guards.
■Before removing the battery compartment cover, ensure all
measurement leads and accessories are disconnected. Replace all
batteries at once. Use alkaline batteries.
■Use personal protection equipment where appropriate.
■All troubleshooting and metrological checks must be done by
competent, accredited personnel.

Table of Contents
1. INTRODUCTION .....................................................................4
1.1 Receiving Your Shipment......................................................................4
1.2 Accessories...........................................................................................5
1.3 Replacement Parts ...............................................................................5
1.4 Description............................................................................................5
1.4.1 Model 6522 (Front)...................................................................6
1.4.2 Model 6524 (Front)...................................................................7
1.5 Back of Instrument................................................................................8
1.6 Terminals ..............................................................................................9
1.7 Function Buttons...................................................................................9
1.8 LCD Display .......................................................................................10
2. OPERATION..........................................................................11
2.1 Setting Up the Instrument ...................................................................11
2.1.1 Conguration Settings ...........................................................11
2.1.2 Alarms.....................................................................................12
2.1.2.1 Activating/Deactivating the Alarm Function....................12
2.1.2.2 Setting an Alarm Threshold............................................13
2.1.2.3 Viewing Alarms ..............................................................14
2.1.3 ∆REL Function (Model 6524) .................................................15
2.1.4 HOLD Function.......................................................................16
2.1.5 Backlighting ............................................................................16
2.1.6 Standby Mode ........................................................................16
2.2 Taking Measurements.........................................................................17
2.2.1 Voltage Measurement.............................................................17
2.2.2 Insulation Measurement .........................................................18
2.2.2.1 TEST Button Operation..................................................20
2.2.2.2 Timed Tests ...................................................................21
2.2.2.3 Remote Control Probe (Optional) ..................................22
2.2.3 Continuity Measurement.........................................................23
2.2.3.1 Lead Compensation.......................................................23
2.2.3.2 Continuity Measuring .....................................................24
2.2.4 Resistance Measurement (Model 6524).................................25
2.3 Recording Data (Model 6524).............................................................26
2.3.1 Recording a Measurement .....................................................26
2.3.2 Viewing Stored Recordings ....................................................27

Megohmmeter Model 6522/6524 3
2.3.3 Deleting Recordings ...............................................................28
2.3.3.1 Deleting a Single Recording ..........................................28
2.3.3.2 Deleting All Recordings..................................................28
3. SPECIFICATIONS .................................................................29
3.1 General Reference Conditions ...........................................................29
3.2 Electrical Specications ......................................................................29
3.2.1 Voltage Measurement.............................................................29
3.2.2 Frequency Measurement........................................................30
3.2.3 Insulation Measurement .........................................................30
3.2.4 Continuity Measurement.........................................................32
3.2.5 Resistance Measurement (Model 6524).................................32
3.2.6 Timer.......................................................................................32
3.2.7 Storage Memory (Model 6524)...............................................33
3.3 Operating Environment.......................................................................33
3.3.1 Voltage Measurement.............................................................33
3.3.2 Insulation Measurement .........................................................34
3.3.3 Resistance and Continuity Measurement...............................35
3.3.4 Intrinsic Uncertainty and Operating Uncertainty.....................36
3.4 Power Supply......................................................................................36
3.5 Environmental Conditions...................................................................36
3.6 Mechanical Specications .................................................................37
3.7 Safety Standards ................................................................................37
4. MAINTENANCE & TROUBLESHOOTING ...............................38
4.1 Maintenance .......................................................................................38
4.1.1 Cleaning .................................................................................38
4.1.2 Replacing the Batteries ..........................................................38
4.2 Troubleshooting ..................................................................................40
4.2.1 Errors......................................................................................40
4.2.1.1 Voltage present before an insulation measurement.......40
4.2.1.2 Range exceeded during an insulation measurement.....40
4.2.1.3 Voltage during continuity/resistance/measurement .......41
4.2.1.4 Memory full (Model 6524) ..............................................41
4.2.2 Resetting the Instrument ........................................................41
4.3 Repair and Calibration ........................................................................42
4.4 Technical and Sales Assistance..........................................................42
4.5 Limited Warranty.................................................................................43
4.6 Warranty Repairs................................................................................43

1. INTRODUCTION
1.1 Receiving Your Shipment
Upon receiving your megohmmeter product package, ensure the contents are
consistent with the packing list. Notify your distributor of any missing items. If
the equipment appears to be damaged, le a claim immediately with the carrier
and notify your distributor at once, providing a detailed description. Save the
damaged packing container to substantiate your claim.
Ordering Information:
Megohmmeter Model 6522.............................................................. Cat. #2155.51
Megohmmeter Model 6524.............................................................. Cat. #2155.52
Shipping Contents:
One of the following:
Megohmmeter Model 6522
or
Megohmmeter Model 6524
Two 1.5m test leads (red/black), two alligator clips
(red/black), 1 test probe (black)
Soft Carrying Case
Both models also include 6 AA batteries and a user manual.

Megohmmeter Model 6522/6524 5
1.2 Accessories
Megohmmeter Test Probe ................................................................Cat. #2155.75
Case - Field Case (Waterproof)........................................................ Cat. #2118.98
Case - Hands Free Carrying Case ................................................... Cat. #2118.99
Continuity Pole .................................................................................Cat. #2138.54
Probe - Set of 2, Color-coded (Red/Black) Grip Probes...................Cat. #2152.26
1.3 Replacement Parts
Lead - Set of 2, Color-coded 5 ft (Red/Black) Silicone Leads, Test Probes &
Alligator Clips {Rated 1000V CAT IV}...............................................Cat. #2152.05
1.4 Description
The Megohmmeters Models 6522 and 6524 are portable measuring instruments
with digital displays. They are powered by batteries. These instruments can
check the safety of electrical installations. For example, they can be used to test
new installations before they are powered up, check an existing installation in a
power-off condition, or troubleshoot an installation.
Features Include:
Model 6522 Model 6524
Insulation test voltages 250, 500, and
1000V
50, 100, 250, 500, and
1000V
PI and DAR ratios calculation 
Continuity measurement  
Resistance measurement 
Programmable alarms 
Frequency measurement 
Storage of the measurements 

6 Megohmmeter Model 6522/6524
1.4.1 Model 6522 (Front)
HOLD
SET-UP
0
V
OFF
Ω
250V
500V
1000V
MΩ
TEST
MEGOHMMETER
MODEL 6522
G
M
VDC
AC
k
M mAµA
G VHz
%
G
M
HOLD P
<
ALARM
1
2
3
4
5
Figure 1
1. Input terminals
2. Blue backlit LCD
3. Four function buttons (see § 1.7)
4. TEST button to start insulation measurements (see § 2.2.2.1)
5. Six-position rotary switch to choose the function or to turn the instrument
OFF