AEMC instruments 6536 User manual
Megohmmeter
Model 6536
CHAUVIN ARNOUX GROUP
®
ENGLISH
User Manual
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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 #: 2155.56
Model #: 6536
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
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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®,
completeness of the text, graphics, or other information contained in this documentation. Chauvin Arnoux®, Inc. shall not
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.
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Thank you for purchasing the Megohmmeter Model 6536.
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
Ground/Earth
Battery
Information or useful tip
Remote test probe
This instrument exceeds regulatory requirements with respect to
recycling and reuse
EMC
Indicates that, in the European Union, the instrument must undergo
This instrument must not be treated as household waste
Denition of Measurement Categories (CAT)
CAT II corresponds to measurements taken on circuits directly connected to
CAT III corresponds to measurements on building installations.
devices.
CAT IV
installations.
Example: power feeders and protection devices.
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PRECAUTIONS FOR USE
CAT III.
Failure to observe the following safety instructions may result in electric shock,
Carefully read and understand all precautions for use.
Be aware of all electrical hazards when using this instrument.
protection features.
The safety of any system in which this instrument is incorporated is the
responsibility of the integrator of the system.
RMSRMS maximum
between terminals.
Do not use the instrument on networks whose voltage or category
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
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.
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Table of Contents
1. INTRODUCTION .....................................................................4
1.1 Receiving Your Shipment......................................................................
...........................................................................................5
...............................................................................5
............................................................................................5
1.5 Front of Instrument ...............................................................................
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..............................................................................................
...................................................................................
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2. OPERATION..........................................................................10
...................................................................
...........................................................
.....................................................................................11
....................11
............................................
..............................................................
∆REL Function .......................................................................
HOLD Function.......................................................................
............................................................................15
........................................................................15
.........................................................................15
.............................................................15
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...................................................................
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ontinuity Measurement.........................................................
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3. SPECIFICATIONS .................................................................29
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4. MAINTENANCE & TROUBLESHOOTING ...............................37
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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
and notify your distributor at once, providing a detailed description. Save the
damaged packing container to substantiate your claim.
Ordering Information:
.............................................................. Cat. #2155.56
....................................... Cat. #2155.57
Shipping Contents:
two alligator clips, two grip probes and
one test probe (black)
Soft Carrying Case
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Megohmmeter Model 6536
5
1.2 Accessories
Megohmmeter Test Probe (600V CAT IV) ........................................Cat. #2155.75
Case - Field Case (Waterproof - Replacement for ESD Floor Kit) ... Cat. #2118.98
Case - Hands Free Carrying Case ................................................... Cat. #2118.99
Continuity Pole .................................................................................Cat. #2138.54
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
Probe - Set of 2, Color-coded (Red/Black) Grip Probes...................Cat. #2152.26
Weights - Set of 2, 5 lbs each with conductive rubber bottom pad
(RoHS)..............................................................................................Cat. #2155.76
Adapter - 4mm non-insulated for safety leads
(Replacement for ESD Floor Kit)......................................................Cat. #1017.45
1.4 Description
The Megohmmeter Model 6536 is a portable measuring instruments with digital
displays, and is powered by batteries. The instrument measures insulation with
test voltages from 10 to 100V in one-volt steps. Other features include:
■Continuity measurement
■Resistance measurement
■ Programmable alarms
The Model 6536 is also available as a oor resistance testing kit (see § 2.2.5)
for testing both point-to-ground and point-to-point electrostatic discharge (ESD).
In addition to the instrument, the kit contains two 5 lb (2.3 kg) oor weights
(also referred to as NFPA probes) that are in compliance with EOS/ESD 11.11
specications. Each oor weight is coated with insulating paint and a conductive
rubber base. The instrument, oor weights, and test leads are packaged in a
rugged eld case. The kit provides all the necessary elements for compliance
with the ANSI/ESD STM97.2-2006 standard for testing ESD ooring.
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1.5 Front of Instrument
HOLD
MEM
SET-UP
CLR
0
V
kΩ
OFF
Ω
VAR
MΩ
MEGOHMMETER
MODEL 6536
TEST
REL
G
M
VDC
AC
k
<
>
ALARM
k
M mAµA
G
G
M
HOLD
REL
P
VAR
G
1
2
3
4
5
Figure 1
1. Input terminals
2. Blue backlit LCD
3.
4. TEST
5.
OFF
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1.6 Back of Instrument
1
2
3
4
5
Figure 2
1.
2. Battery compartment cover
3. Mounting magnets, molded into instrument case
4.
5. Stand
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1.7 Terminals
> 700V
600V CAT IV
Figure 3
1.8 Function Buttons
Several keys have two functions. One is marked on the key, and is enabled via
a short press. The second function is marked under the key, and is enabled by a
BUTTON
DESCRIPTION
Selects the and
HOLD Freezes/unfreezes the displayed measurement on the LCD (§
SET-UP Accesses the instrument’s setup parameters and information (§
0
The and keys allow you to:
Modify the display and program the durations of
∆Rel
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1.9 LCD Display
G
M
V
DC
AC
k
<
>
ALARM
VAR
k
M mAµA
G
G
M
HOLD
REL
P
1
2
3
4
Figure 4
1. Logarithmic bar graph displays insulation measurements
2. Secondary display area
3. Main display area
4. Icons/indicators
When the measured value is below the minimum, the instrument displays - - - - .
positive and negative limits, the instrument displays OL or – OL.
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2. OPERATION
Except when measuring voltage, all measurements must be made on
the rotary switch is set to the voltage or an insulation testing position,
the instrument measures and displays any voltage present at the input
terminals prior to the user pressing the test button.
2.1 Setting Up the Instrument
2.1.1 Configuration Settings
SET-UP
> 2s
SET-UP button enables you to
then use the and buttons to scroll through and modify
parameters.
1st press
on
The alarm buzzer is active. To
deactivate it:
1.. On will blink to
indicate it is selected.
2.to change the
setting to OFF.
3.to validate the
change.
The symbol disappears from the
Note that this setting reverts to On
when you turn OFF the instrument.
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nd press
on
P
Automatic switching to standby
mode is activated. To deactivate it:
1.to select OFF (the
setting blinks).
2.to change the
setting to On.
3.to validate the
change.
The
P
symbol appears on the
Note that this setting reverts to OFF
when you turn OFF the instrument.
rd press
on
Displays the instrument model
number.
th press
on
version.
5th press
on
Displays the instrument hardware
version.
th press
on
2.1.2 Alarms
The instrument includes an alarm function that sounds an audible buzzer when a
2.1.2.1 Activating/Deactivating the Alarm Function
TEST
The alarm function is available in insulation, resistance, and
button
activates the alarm. The symbol appears on the LCD, along
with the threshold value.
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ALARM
<
To turn OFF the alarm buzzer while it is sounding, press the HOLD button. To
deactivate an active alarm function, press the button.
2.1.2.2 Setting an Alarm Threshold
While is displayed indicating the alarm function is active, you can change
the alarm threshold by pressing the button (except during insulation
values:
1.
2.
button. This symbol indicates the direction of the alarm threshold: < for a
low threshold and > for a high threshold.
3.
button to change its value.
4. buttons to select and change the other digits in the
threshold value, as well as the units of measurement.
5.
setting.
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2.1.2.3 Viewing Alarms
When the measurement is below a low alarm threshold or above a high alarm
threshold, the instrument emits a continuous audible signal and the LCD
indicates the threshold crossed:
ALARM <
M
ALARM
k
M
>
When checking continuity, this enables you to determine whether or not the
display. You can similarly check insulation quality.
2.1.3 ∆REL Function
CLR
REL
For an insulation or resistance measurement, you can
To activate this function, press the ∆REL button during
an active measurement. This measurement becomes the
reference (Rref) and will be stored and subtracted from
subsequent measurement values (RmeasREL symbol
appears on the LCD while this function is activated.
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M
REL
V
G
If the measured value is less than the stored value, the display becomes
negative.
x
button until the % sign appears:
%
M
REL
G
REL.
The bar graph continues to display the true measured value.
To deactivate the ∆REL function, press the ∆REL button during an active
measurement, or turn the rotary switch to another setting.
2.1.4 HOLD Function
HOLD
HOLD button freezes the display of the
measurement. This can be done in all functions except during a
timed measurement ( ).
To unfreeze the display, press the HOLD button again.
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2.1.5 Backlighting
0
button turns ON backlighting for the LCD.
To switch it OFF, press the button again. Otherwise,
backlighting goes OFF automatically at the end of one
minute.
2.1.6 Standby Mode
After 5 minutes of operation with no user activity, the instrument automatically
switches to standby mode. To restore normal operation, simply press any button.
The instrument returns to the state it was in prior to entering standby mode, with
no loss of information (value of the last measurement, compensation of the leads,
REL, timed mode, alarm, etc.).
Automatic switching to standby mode is disabled during:
insulation measurements in mode and in mode.
continuity measurements, for as long as measurements are made.
Automatic switching to standby is disabled via the SET-UP
2.2 Taking Measurements
2.2.1 Voltage Measurement
To ensure proper and accurate operation of the instrument, we recommend
measuring a known voltage (such as an electrical outlet) before measuring
unknown voltages.
1. Set the switch to Vor MΩ VAR.
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V
k
Ω
OFF
Ω
M
Ω
VAR
2. Using the leads, connect the system to be tested to the instrument’s
terminals.
VDC
AC
G VHz
The instrument displays the voltage on the terminals. It detects whether the
voltage is AC or DC.
V
DC
AC
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