AEMC instruments 6536 User manual

WITH AEMC
®
INSTRUMENTS
MEGOHMMETERS
Megohmmeter
Model 6536
ENGLISH
User Manual

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: [phone] or [phone] • Fax: [phone]
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. shall not be liable for any damages, special, indirect,


user of the documentation has been advised of the possibility of such damages.

Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments

using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met the instrument’s published

An NIST traceable certicate 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/calibration.
Serial #:
Catalog #: 2155.56
Model #: 6536
ll in the appropriate date as indicated:
Date Received:
Date Calibration Due:

TABLE OF CONTENTS
1. INTRODUCTION..................................................................6
1.1 PRECAUTIONS FOR USE ........................................................ 8
1.2 RECEIVING YOUR SHIPMENT................................................ 9
1.3 ORDERING INFORMATION: .................................................... 9
Shipping Contents: ...................................................................... 9
1.3.1 Accessories ...................................................................... 10
1.3.2 Replacement Parts........................................................... 10
2. PRODUCT FEATURES..................................................... 11
2.1 DESCRIPTION ......................................................................... 11
2.2 FRONT OF INSTRUMENT...................................................... 12
2.3 BACK OF INSTRUMENT ........................................................ 13
2.4 TERMINALS ............................................................................. 14
2.5 FUNCTION BUTTONS ............................................................ 14
2.6 L C D DISPL AY .......................................................................... 15
3. OPERATION ...................................................................... 16
3.1 SETTING UP THE INSTRUMENT.......................................... 16
....................................................... 16
3.1.2 Alarms............................................................................... 17
3.1.2.1 Activating/Deactivating the Alarm Function............... 17
3.1.2.2 Setting an Alarm Threshold ...................................... 18
3.1.2.3 Viewing Alarms.......................................................... 18
.................................................................. 19
3.1.4 HOLD Function ................................................................. 20
3.1.5 Backlighting ...................................................................... 20
3.1.6 Standby Mode................................................................... 21
3.2 TAKING MEASUREMENTS.................................................... 21
3.2.1 Voltage Measurement....................................................... 21
3.2.2 Insulation Measurement................................................... 22
3.2.2.1 TEST Button Operation............................................. 24
3.2.2.2 Timed Tests ............................................................. 24
3.2.2.3 Remote Control Probe (Optional) ............................. 25
3.2.3 Continuity Measurement .................................................. 26
3.2.3.1 Lead Compensation.................................................. 26
3.2.3.2 Continuity Measuring................................................ 27

3.2.4 Resistance Measurement ................................................ 28
3.2.5 Floor Resistance Testing.................................................. 29
3.2.5.1 Setup ......................................................................... 30
3.2.5.2 Test Procedure.......................................................... 30
3.2.5.3 Measurement Results............................................... 31
4. SPECIFICATIONS ............................................................. 32
4.1 GENERAL REFERENCE CONDITIONS................................ 32
4.2 ELECTRICAL SPECIFICATIONS........................................... 32
4.2.1 Voltage Measurement....................................................... 32
4.2.2 Insulation Measurement................................................... 32
4.2.3 Continuity Measurement .................................................. 34
4.2.4 Resistance Measurement................................................. 35
4.2.5 Timer ................................................................................ 35
4.2.6 Floor Resistance Testing.................................................. 35
4.3 OPERATING ENVIRONMENT................................................ 35
4.3.1 Voltage Measurement....................................................... 35
4.3.2 Insulation Measurement................................................... 36
4.3.3 Resistance and Continuity Measurement ........................ 37
4.3.4 Intrinsic Uncertainty and Operating Uncertainty .............. 37
4.4 POWER SUPPLY ..................................................................... 38
4.5 ENVIRONMENTAL CONDITIONS ......................................... 38
4.6 MECHANICAL SPECIFICATIONS ........................................ 38
4.7 SAFET Y STANDARDS ............................................................ 38
5. MAINTENANCE & TROUBLESHOOTING......................39
5.1 M A I N T E N A N C E ....................................................................... 39
5.1.1 Cleaning ............................................................................ 39
5.1.2 Replacing the Batteries..................................................... 39
5.2 TROUBLESHOOTING............................................................. 41
5.2.1 Errors................................................................................ 41
5.2.1.1 Voltage present before an insulation measurement.....41
5.2.1.2 Range exceeded during an insulation measurement ..41
5.2.1.3 Voltage present during a continuity or resistance
measurement .........................................................................41
5.2.2 Resetting the Instrument .................................................. 42
5.3 REPAIR AND CALIBRATION ................................................. 42
5.4 TECHNICAL AND SALES ASSISTANCE .............................. 42
5.5 LIMITED WARRANTY............................................................. 43
5.5.1 Warranty Repairs.............................................................. 43

6 Megohmmeter Model 6536
1. INTRODUCTION
Thank you for purchasing an AEMC®Instruments Megohmmeter Model 6536.
For the best results from your instrument and for your safety, you must read the
enclosed operating instructions carefully and comply with the precautions for use.

Symbols and Denitions

CAUTION - Risk of Danger! Indicates a WARNING. Whenever this symbol
is present, the operator must refer to the user manual before operation
Indicates a risk of electric shock. The voltage at the parts marked with this
symbol may be dangerous
Indicates Important information to acknowledge
Ground/Earth
Battery
> 700V The voltage on the terminals must not exceed 700 V
Remote test probe
This product complies with the Low Voltage & Electromagnetic Compatibility
European directives (73/23/CEE & 89/336/CEE)
The 

Electromagnetic Compatibility, and the Restriction of Hazardous Substances
The product has been declared recyclable
Chauvin Arnoux®and AEMC®Instruments have adopted an Eco-Design
approach in order to design this instrument. Analysis of the complete life-
󰀨
environment. In particular this instrument exceeds regulation requirements
with respect to recycling and reuse
In the European Union, this product is subject to a separate collection
system for recycling electrical and electronic components in accordance with
directive WEEE 2002/96/EC

Megohmmeter Model 6536 7
Denition of Measurement Categories (CAT)
CAT IV: Corresponds to measurements performed at the primary electrical
supply (< 1000 V).
Example: primary overcurrent protection devices, ripple control units,
and meters.
CAT III: Corresponds to measurements performed in the building installation
at the distribution level.
Example: hardwired equipment in xed installation and circuit breakers.
CAT II: Corresponds to measurements performed on circuits directly
connected to the electrical distribution system.
Example: measurements on household appliances and portable tools.

8 Megohmmeter Model 6536
1.1 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 600 V in CAT IV or 1000 V in CAT III.
Failure to observe the following safety instructions may result in electric shock,

 
 
 
protection features.
 
responsibility of the integrator of the system.
 
exceeding 600 VRMS with respect to ground or 700 VRMS maximum
between terminals.
 

 
 
“live” systems.
 
closed.
 
housing, and accessories. Any part on which the insulation is deteriorated
(even partially) must be set aside for repair or scrapping.
 
electric shock to the user.
 
 
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.
 
behind the physical guards.
 
leads and accessories are disconnected. Replace all batteries at once. Use
alkaline batteries.
 
 
accredited personnel.

Megohmmeter Model 6536 9
1.2 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.
1.3 ORDERING INFORMATION:
Megohmmeter Model 6536..............................................................Cat. #2155.56
Megohmmeter Model 6536 ESD Floor Kit...................................... Cat. #2155.57
Shipping Contents:
ESD Floor Kit
(only with Cat. #2155.57)
Megohmmeter Model 6536
(1) Soft Carrying Pouch - Cat. #2119.02
7.75 x 9.25 x 2.75 in
Two color-coded (red/black) 1.5 m test leads,
two alligator clips, two grip probes and
one test probe (black)

10 Megohmmeter Model 6536
1.3.1 Accessories
Megohmmeter Test Probe (600 V CAT IV) ......................................Cat. #2155.75
Case - Field Case (Waterproof - Replacement for ESD Floor Kit).......Cat. #2155.77
Continuity Probe...............................................................................Cat. #2138.54
Probe – red test probe (1000 V Cat IV, 15 A, UL)............................Cat. #5000.31
1.3.2 Replacement Parts
Carrying Pouch for Cable Tester, Megohmmeters,
Multimeters, etc................................................................................Cat. #2119.02
Probe - Set of 2, Color-coded (Red/Black) Grip Probes................. Cat. #2152.26
Probe – Black test probe (1000 V Cat IV, 15 A, UL) ........................Cat. #5000.30
Lead - Set of 2, 5 ft silicone color-coded (red/black) with
4 mm straight/right banana plugs (Rated 1000 V, CAT IV, UL) .......Cat. #5000.94
 ....Cat. #5000.97
Clip - Safety Alligator - Black (1000 V CAT IV, 15 A, UL V2) ..........Cat. #5000.99
Clip - Safety Alligator - Red (1000 V CAT IV, 15 A, UL V2) ............Cat. #5100.00
Weights - Set of 2, 5 lbs each with conductive rubber
bottom pad (RoHS) ..........................................................................Cat. #2155.76
Adapter - 4 mm non-insulated for safety leads
(Replacement for ESD Floor Kit)......................................................Cat. #1017.45
Order Accessories and Replacement Parts Directly Online
Check our Storefront at www.aemc.com/store for availability

Megohmmeter Model 6536 11
2. PRODUCT FEATURES
2.1 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 100) V in one-volt steps. Other features include:
 
 
 

for testing both point-to-ground and point-to-point electrostatic discharge (ESD).

(also referred to as NFPA probes) that are in compliance with EOS/ESD 11.11





12 Megohmmeter Model 6536
2.2 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. Five-position rotary switch to choose the function or to turn the instrument
OFF

Megohmmeter Model 6536 13
2.3 BACK OF INSTRUMENT
1
2
3
4
5
Figure 2
1. Captive quarter-turn screw
2. Battery compartment cover
3. Mounting magnets, molded into instrument case
4. Non-skid pads
5. Stand

14 Megohmmeter Model 6536
2.4 TERMINALS
> 700V
600V CAT IV
Figure 3
The instrument has one positive ( +) terminal and one negative ( -) terminal. The

2.5 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
long (>2 seconds) press.
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 insulation

■
■
∆Rel 󰀨


Megohmmeter Model 6536 15
2.6 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.

16 Megohmmeter Model 6536
3. OPERATION
NOTE: Except when measuring voltage, all measurements must
󰀨
is no voltage on the system under test before making a non-voltage
measurement. When 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.
3.1 SETTING UP THE INSTRUMENT
3.1.1 Conguration Settings

SET-UP
> 2s
A >2 second press of the SET-UP button enables you to


parameters.
In Set-Up mode, the button performs the following functions:
1st press
on 
The alarm buzzer is active. To deactivate it:
1. Press . On will blink to indicate it is
selected.
2. Press to change the setting to OFF.
3. Press to validate the change.
The symbol disappears from the dis-
play when you exit Set-Up.
Note that this setting reverts to On when
you turn OFF the instrument.
2nd press
on 
P
Automatic switching to standby mode is
activated. To deactivate it:
1. Press to select OFF (the setting
blinks).
2. Press to change the setting to On.
3. Press to validate the change.
The
P
symbol appears on the display
when you exit Set-Up.
Note that this setting reverts to OFF when
you turn OFF the instrument.

Megohmmeter Model 6536 17
3rd press
on Displays the instrument model number.
4th press
on 
5th press
on Displays the instrument hardware version.
6th press
on 
3.1.2 Alarms
The instrument includes an alarm function that sounds an audible buzzer when a

3.1.2.1 Activating/Deactivating the Alarm Function

TEST
The alarm function is available in insulation, resistance, and
continuity measurement modes. Pressing the button acti-
vates the alarm. The symbol appears on the LCD, along
with the threshold value.
To turn OFF the alarm buzzer while it is sounding, press the HOLD button. To
deactivate an active alarm function, press the button.
ALARM
<

18 Megohmmeter Model 6536
3.1.2.2 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:
■
■
■
In each measurement mode, the third threshold can be replaced by a user-

1. 
2. The ><by pressing the 
button. This symbol indicates the direction of the alarm threshold: < for a
low threshold and >for a high threshold.
3. 
digit, and then use the 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. 
3.1.2.3 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
<

Megohmmeter Model 6536 19
When checking continuity, this enables you to determine whether or not the

the display. You can similarly check insulation quality.
3.1.3 ∆REL Function

CLR
REL
For an insulation or resistance measurement, you can con-

󰀨
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 (RmeasREL symbol
appears on the LCD while this function is activated.
If the measured value is less than the stored value, the display becomes negative.
M
ALARM
k
M
>
M
REL
V
G

20 Megohmmeter Model 6536
󰀨
(x 100) by pressing the button until the % sign appears:
NOTE: 
REL. The bar graph continues to display the true measured value.
To deactivate the ∆REL function, press the ∆REL button during an active mea-
surement, or turn the rotary switch to another setting.
3.1.4 HOLD Function

HOLD
Pressing the HOLD button freezes the display of the measure-
ment. This can be done in all functions except during a timed
measurement ( ).
To unfreeze the display, press the HOLD button again.
3.1.5 Backlighting

0
Pressing the 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.
%
M
REL
G