Megohmmeter
Models 6528 and 6529
User Manual
True Megohmmeter
®
ENGLISH
www.aemc.com
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.
®
Chauvin Arnoux
, Inc. d.b.a. AEMC® Instruments
15 Faraday Drive • Dover, NH 03820 USA
Tel: (800) 945-2362 or (603) 749-6434 • Fax: (603) 742-2346
This documentation is provided “as is,” without warranty of any kind, express, implied, or otherwise.
Chauvin Arnoux
but does not warrant the accuracy or completeness of the text, graphics, or other information contained
in this documentation. Chauvin Arnoux
®
, Inc. has made every reasonable effort to ensure that this documentation is accurate;
®
, 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 prots 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, AEMC
, and DataView® are registered trademarks of AEMC® Instruments.
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.
The recommended calibration interval for this instrument is 12 months
and begins on the date of receipt by the customer. For recalibration,
please use our calibration services. Refer to our repair and calibration
section at www.aemc.com.
Serial #: ______________________________
Catalog #: 2126.54 / 2126.55
Model #: 6528 / 6529
Please fill in the appropriate date as indicated:
Date Received: _________________________
Date Calibration Due: ____________________
Chauvin Arnoux®, Inc.
d.b.a AEMC
www.aemc.com
®
Instruments
MEASUREMENT CATEGORIES
770 V
Thank you for purchasing the True Megohmmeter® Model 6528 or 6529. For best results
with your instrument:
■ Read this user manual carefully
■ Respect precautions for use
AC - Alternating current DC - Direct Current
AC or DC Double insulated
Shock Hazard Fuse
Battery
Instrument follows
recycling directives
Instructions that must be
read and understood
Comply with US directives
Sorting for the recycling
of electric and electronic
Earth Ground
waste
Danger Hazard
Voltage on the instrument
should not exceed 770VRMS
Definition of Measurement Categories (CAT)
■ CAT IV: Test and measurement circuits connected to the source of the building’s
low-voltage network installation.
Example: Measurement on equipment installed upstream of the main fuse or
building installation cut-off switch.
■ CAT III: Test and measurement circuits connected to parts of the building’s low
voltage network installation.
Example: Measurement on distribution switchboards (including secondary meters),
the circuit breakers, cabling including cables, busbars, junction boxes, circuit
breakers, power outlets in the xed installation and industrial instruments and
other equipment such as motors permanently connected to the xed installation.
■ CAT II: Test and measurement circuits directly connected to points of use (power
outlets and other similar points) on the low voltage network.
Example: Measurement on circuits in network for household appliances, portable
tools and other similar instruments.
4
Megohmmeter Models 6528/6529
PRECAUTIONS FOR USE
Failure to comply with safety instructions can create a risk of electric shock, re, explosion and destruction
the instrument or the installations. If the instrument is used other than as specied in this User Manual,
the protection provided by the instrument may be impaired.
■ The operator and/or the responsible authority must carefully read and clearly understand the
various precautions to be taken in use.
■ Before using the instrument, make sure it functions properly by measuring a known voltage and a
known insulation resistor, and check continuity by short circuiting both test leads.
■ Do not use the instrument in an explosive atmosphere or in the presence of inammable gas or
smoke.
■ Do not use the instrument on networks with a rated voltage or category higher than those listed in
this manual.
■ Respect the maximum rated voltages and currents between terminals and in relation to the earth.
■ Do not use the instrument if it seems damaged, incomplete, or incorrectly closed.
■ Before each use, check the condition of the cable insulation, the instrument, and its accessories.
All elements on which the insulation is damaged (even partially) must be put out of service for
repair or disposed as waste.
■ Use cables and accessories for voltage according to IEC 61010-031 and measurement categories
at least equal to those of the instrument. If not, an accessory of a lower category reduces the
category of the combined megohmmeter plus the accessory to that of the accessory.
of
■ Respect the environmental conditions of use.
■ Strictly comply with the fuse specications. Disconnect all cables before opening the fuse access
cover.
■ Do not modify the instrument, and, do not replace components using equivalent parts. Repairs
and adjustments must be performed by qualied, approved personnel.
■ Replace the battery as soon as the
before opening the battery access cover.
■ Use personal protection equipment (PPE) when conditions require it.
■ Keep your hands and ngers away from the unused instrument terminals. When handling sensors
or test probes, do not place ngers beyond the physical nger guard.
5
symbol appears on the display. Disconnect all cables
Megohmmeter Models 6528/6529
TABLE OF CONTENTS
1.INTRODUCTION ............................................................................................... 7
1.1 Receiving Your Shipment ................................................................................................................... 7
1.2 Ordering Information .......................................................................................................................... 7
1.3 Accessories ........................................................................................................................................ 8
1.4 Replacement Parts ............................................................................................................................ 8
2.OVERVIEW ...................................................................................................... 8
2.1 Description ......................................................................................................................................... 8
2.2 Insulation Resistance Testing Principal of Operation ......................................................................... 9
2.3 Megohmmeter Models 6528 & 6529 — Front View ........................................................................... 9
2.4 TEST Button and Function Keys ...................................................................................................... 10
2.5 Instrument Display ........................................................................................................................... 10
2.6 Terminals ...........................................................................................................................................11
2.7 Conguration Mode ...........................................................................................................................11
2.8 Alarm Buzzer ................................................................................................................................... 12
2.9 Permanent Mode ............................................................................................................................. 12
2.10 Backlight (BL) ................................................................................................................................. 12
2.11 Firmware Version ............................................................................................................................ 12
2.12 Alarm Functions and Indicators ...................................................................................................... 12
3.OPERATION ................................................................................................... 14
3.1 Battery Installation ........................................................................................................................... 14
3.2 Instrument Check ............................................................................................................................. 14
3.3 Power Supply and Battery Life ......................................................................................................... 14
3.4 Stand, Door or Magnetic Mount ....................................................................................................... 15
3.5 AC+DC or DC Voltage ..................................................................................................................... 15
3.6 Continuity ......................................................................................................................................... 16
3.7 Resistance ....................................................................................................................................... 17
3.8 Insulation Resistance Tests.............................................................................................................. 18
4. MAINTENANCE .............................................................................................. 24
4.1 Cleaning ........................................................................................................................................... 24
4.2 200mA Fuse Test ............................................................................................................................. 24
4.3 Battery and Fuse Replacement ....................................................................................................... 24
5. GENERAL SPECIFICATIONS .......................................................................... 25
6. ELECTRICAL SPECIFICATIONS ..................................................................... 26
6.1 General Condition of Reference ...................................................................................................... 26
6.2 AC/DC Voltage Measurement .......................................................................................................... 26
6.3 Ground Bond Continuity Measurement ............................................................................................ 26
6.4 Ground Bond Resistance Measurement .......................................................................................... 26
6.5 Insulation Resistance Specication ................................................................................................ 27
7. REPAIR AND CALIBRATION ........................................................................... 28
8. TECHNICAL AND SALES ASSISTANCE .......................................................... 28
9. LIMITED WARRANTY ..................................................................................... 29
1.INTRODUCTION
1.1 Receiving Your Shipment
Upon receiving your shipment, make sure that the contents are consistent with the packing list. Notify your
distributor
the carrier and notify your distributor at once, giving a detailed description
damaged packing container to substantiate your claim.
1.2 Ordering Information
Megohmmeter Model 6528 (Digital, 250V, 500V, 1kV, 420K-Ohm, V, Continuity, Alarm &
Timer) .................................................................................................................................. Cat. #2126.54
Megohmmeter Model 6529 (Digital, 50V, 100V, 250V, 500V, 1kV,420k-Ohm, V, Continuity, Alarm &
Timer, PI/DAR) ....................................................................................................................Cat. #2126.55
Both models include soft carrying case, set of (2) 5 ft color-coded silicone leads, (2) color-coded
alligator clips, (2) color-coded test probes (red/black), {Rated 1000V CAT IV, UL V2}, (6) 1.5V AA batteries
and a user manual.
of any missing items. If the equipment appears to be damaged, le a
of any damage. Save the
claim immediately with
(1) of the following Megohmmeter Models:
Model 6528 Cat. #2126.54 or
Model 6529 Cat. #2126.55
Lead – set of (2), 5 ft silicone color-coded
(red/black) with 4mm straight/right angle
banana plugs (Rated 1000V CAT IV, UL)
Cat. #5000.94
Also includes 6 AA batteries and a user manual.
7
(1) Pouch – replacement for Models 1026, 6528, & 6529
(7 x 8.5 x 2”)
Cat. #2117.73
Probe – black test probe (Rated
1000V CAT IV, 15A, UL V2)
Cat. #5000.97
Probe – red test probe (Rated
1000V CAT IV, 15A, UL V2)
Cat. #5000.98
Clip – safety alligator – black
(Rated 1000V CAT IV, 15A, UL V2)
Cat. #5000.99
Clip – safety alligator – red (Rated
1000V CAT IV, 15A, UL V2)
Cat. #5100.00
Megohmmeter Models 6528/6529
1.3 Accessories
Continuity Probe for use with Megohmmeters and Installation
Testers .................................................................................................Cat. #2138.54
1.4 Replacement Parts
Pouch – replacement for Models 1026, 6528, & 6529 (7 x 8.5 x 2”) ................................. Cat. #2117.73
Lead – set of (2), 5 ft silicone color-coded (red/black) with 4mm straight/right angle banana plugs
(Rated 1000V CAT IV, UL) ..................................................................................................Cat. #5000.94
Fuse – set of 2, FF, 200mA, 1000V, 10kA, 6x32mm .......................................................... Cat. #2971.04
Probe – black test probe (Rated 1000V CAT IV, 15A, UL V2) ............................................ Cat. #5000.97
Probe – red test probe (Rated 1000V CAT IV, 15A, UL V2) ............................................... Cat. #5000.98
Clip – safety alligator – black (Rated 1000V CAT IV, 15A, UL V2) .....................................Cat. #5000.99
Clip – safety alligator – red (Rated 1000V CAT IV, 15A, UL V2) ......................................... Cat. #5100.00
For accessories and replacement parts, visit our store at www.aemc.com.
2.OVERVIEW
2.1 Description
The Megohmmeter Models 6528 and 6529 are portable measuring instruments with digital displays.
They are powered by batteries. These instruments can check the safety of electrical insulation. For
example, they can be used to test new insulation before they are powered up, check existing insulation
in a power-off condition, or troubleshoot potential faulty insulation.
Features include:
Model 6528 Model 6529
Insulation test voltages 250, 500, and 1000V 50, 100, 250, 500, and 1000V
Insulation Resistance
PI and DAR ratios calculation
Continuity measurement
Resistance measurement
Programmable alarms
8
–
Megohmmeter Models 6528/6529
2.2 Insulation Resistance Testing Principal of Operation
Insulation resistance measurement is based on Ohm’s Law. By applying a known DC voltage and then
measuring the current owing, the instrument can determine the value of the resistance. In principle, the
value of the insulation resistance is very high, but not innite. Therefore, by measuring the low current
owing, the instrument indicates the insulation
This resistance characterizes the quality of the insulation and
resistance value, providing a result in kΩ, MΩ, or GΩ.
provides a good indication of the risks
of leakage currents.
2.3 Megohmmeter Models 6528 & 6529 — Front View
HOLD
HOLD
V
Ω
kΩ
600 V CAT IV
REL
OFF
Ω
FUSED
700 V
max
MEGOHMMETER
MODEL 6528
Ω
P
0
NOISE
SET-UP
V%
mA
1000 V
V
kΩ
GΩ
MΩ
Ω
0
250 V
500
MΩ
MEGOHMMETER
MODEL 6529
Ω
HOLD
REL
Backlit LCD
AC
+
DC
display unit
PI
DAR
TEST button
P
0
V%
mA
AC
+
V
DC
kΩ
GΩ
MΩ
NOISE
Four Function
Keys
V
Test Modes
Six (Model 6528)
Eight (Model 6529)
Fused
Test Lead Terminals
HOLD
V
Ω
kΩ
600 V CAT IV
OFF
Ω
FUSED
700 V
max
SET-UP
Ω
0
50 V
250 V
500 V
1000 V
M
V
100
9
Megohmmeter Models 6528/6529
2.4 TEST Button and Function Keys
0
Ω
0
SET-UP
2.4.1 TEST Button
Pressing the TEST button starts an insulation measurement. It also serves to conrm a programmed
threshold.
• Performs battery voltage check (§3.2)
• In resistance measurement, it is used to enter/exit the DMR mode and record
the reference measurement (§3.7.1)
• Starts insulation resistance test (§3.8)
2.4.2 Function Keys
KEY DESCRIPTION
HOLD
Freezes/unfreezes the measurement on the display. To unfreeze the display press
HOLD key again. In SET-UP mode, the function of the key
parameters.
Toggle between AC+DC and DC (§3.5)
Activate/deactivate audible continuity indicator (§3.6) and insulation alarm (§3.7)
is to cycle through
Ω
▲, ►
2.5 Instrument Display
1. Indicates the measurement is on hold.
2. Indicates the Differential Mode Resistance
(DMR) or relative mode function is active in
a resistance measurement.
3. Indicates the resistance of the leads is
compensated in a continuity measurement.
4. Indicates auto-off is deactivated.
5. Indicates the remaining battery life.
6. Indicates that the measurement is within
or outside of the alarm threshold set point.
7. Indicates the presence of a hazardous voltage.
8. Indicates the alarm is active in the insulation
or DMR measurement mode.
9. Indicates the audible buzzer is activated.
10. Indicates a voltage interference in a conti
or resistance measurement.
(short press <2s) Activate/deactivate backlight (§2.10)
(long press >2s) Perform lead compensation for continuity checks (§3.6.1)
SET-UP (long >2s press): congure settings (§2.7)
(short press <2s): select type of insulation test (
6529)) (§3.8)
Navigate the conguration menu (§2.7)
nuity
1 2 3 4 5
Ω
HOLD
REL
0
6 7 8 9 10
, , PI, DAR (Model
P
V%
mA
V
kΩ
GΩ
AC
+
DC
Secondary
Display
Primary
Display
MΩ
NOISE
10
Megohmmeter Models 6528/6529
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