Chauvin Arnoux AEMC Instruments True Megohmmeter 6528 User Manual

Megohmmeters

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User Manual

ENGLISH

True Megohmmeter

Models

6528 & 6529

MEGOHMMETERS

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Summary of Contents for Chauvin Arnoux AEMC Instruments True Megohmmeter 6528

Page 1 User Manual ENGLISH True Megohmmeter ® Models 6528 & 6529 MEGOHMMETERS...
Page 2 , 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, ®...
Page 3: Statement Of Compliance
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 the instrument’s published specifications.
Page 4: Table Of Contents
TABLE OF CONTENTS 1. INTRODUCTION...............6 1.1 INTERNATIONAL ELECTRICAL SYMBOLS ......... 6 1.2 DEFINITION OF MEASUREMENT CATEGORIES (CAT) ... 6 1.3 PRECAUTIONS FOR USE ............7 1.4 RECEIVING YOUR SHIPMENT ............. 7 1.5 ORDERING INFORMATION ............8 1.5.1 Accessories ..................8 1.5.2 Replacement Parts ................
Page 5 3.6 CONTINUITY ................. 19 3.6.1 Compensation of the Measurement Leads ........21 3.6.2 Continuity Alarm Indicators ............21 3.6.3 Continuity Error Indicators ............21 3.7 RESISTANCE ................. 21 3.7.1 Differential Mode Resistance (DMR) Mode ......... 22 3.7.2 Resistance Mode Alarm Indicators ..........23 3.7.3 Resistance Mode Error Indicators ..........
Page 6: Introduction
1. INTRODUCTION Thank you for purchasing an AEMC Instruments True Meghommeter ® ® Model 6528 or Model 6529. For best results from your instrument and for your safety, read the enclosed operating instructions carefully and comply with the precautions for use. Only qualified and trained operators should use this product.
Page 7: Precautions For Use
1.3 PRECAUTIONS FOR USE The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in use. Sound knowledge and a keen awareness of electrical hazards are essential when using this instrument. ■ The operator and/or the responsible authority must carefully read and clearly understand the various precautions to be taken in use.
Page 8: Ordering Information
1.5 ORDERING INFORMATION Megohmmeter Model 6528 (Digital, 250 V, 500 V, 1 kV, 420 K-Ohm, V, Continuity, Alarm & Timer) (Discontinued - no longer available for purchase) Replacement is Model 6529 (Cat. #2126.55) ........Cat. #2126.54 Megohmmeter Model 6529 (Digital, 50 V, 100 V, 250 V, 500 V, 1 kV,420 k-Ohm, V, Continuity, Alarm &...
Page 9: Replacement Parts
1.5.2 Replacement Parts Pouch – replacement for Models 1026, 6528, & 6529 (7 x 8.5 x 2) in ...Cat. #2119.02 Lead – set of (2), 5 ft silicone color-coded (red/black) with 4 mm straight/right angle banana plugs (Rated 1000 V CAT IV, UL) .. Cat. #5000.94 Fuse –...
Page 10: Product Features
2. PRODUCT FEATURES 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.
Page 11: Front View - Models 6528 & 6529
2.3 FRONT VIEW - MODELS 6528 & 6529 Model 6528 Model 6529 MEGOHMMETER MEGOHMMETER MODEL 6528 MODEL 6529 Ω Ω HOLD HOLD Backlit LCD Unit kΩ kΩ GΩ GΩ TEST Button MΩ MΩ NOISE NOISE HOLD HOLD Four SET-UP SET-UP Function Keys Ω...
Page 12: Function Keys
  2.4.2 Function Keys Description  Freezes/unfreezes the measurement on the display. To unfreeze HOLD HOLD the display press HOLD key again. In SET-UP mode, the function of the key is to cycle through parameters.  Toggle between AC+DC and DC (§ 3.5) Activate/deactivate audible continuity indicator (§...
Page 13: Display
2.5 DISPLAY Ω HOLD Secondary Display kΩ Primary GΩ Display MΩ NOISE Item Description Indicates the measurement is on hold. Indicates the Differential Mode Resistance (DMR) or relative mode function is active in a resistance measurement. Indicates the resistance of the leads is compensated in a continuity measurement.
Page 14: Configuration Mode
2.7 CONFIGURATION MODE Configuration mode enables you to set several options for the instrument. To open configuration mode, turn the rotary switch to OFF. Then press and hold down the SET-UP key for >2 s while turning the rotary switch to any position. The symbol ConF appears on the LCD.
Page 15: Alarm Buzzer
2.8 ALARM BUZZER To enable/disable the audible Alarm buzzer in Insulation mode: 1. Turn the rotary switch to OFF. 2. Press and hold down the SET-UP key for >2 s turning the rotary switch to any position. The LCD momentarily displays ConF to indicate the instrument is in configuration mode.
Page 16: Firmware Version
2.11 FIRMWARE VERSION To display the firmware version number currently running on the instrument: 1. Turn the rotary switch to OFF. 2. Press and hold down the SET-UP key for >2 s while turning the rotary switch to any position. The LCD will display ConF. 3.
Page 17: Operation
3. OPERATION 3.1 BATTERY INSTALLATION Place the batteries in the instrument as follows: 1. Use a Phillips screwdriver to remove the battery cover screw on the back of the instrument. 2. Install the batteries, respecting polarity. Requires six AA (LR6) batteries.
Page 18: Power Supply And Battery Life
3.3 POWER SUPPLY AND BATTERY LIFE The power supply is (6) 1.5 V alkaline batteries (type AA or LR6). Nominal voltage is (6.6 to 9.6) V. Below 6.6 V the instrument will not turn on. Battery life for insulation measurements: Average battery life for insulation measurement (according to IEC61557-2 clause 6.7) is 2000 measurements with new batteries at room temperature (5 s ON, 25 s OFF).
Page 19: Voltage Error Indicators
1. Turn the rotary switch to the V position. 2. Toggle between AC+DC or DC voltage measurement by pressing key.  Toggle between 3. Connect the red test lead to the terminal and the black test lead to the AC+DC COM terminal.
Page 20 In Continuity mode the instrument outputs a current above 200 mA @ 2 Ω and COM terminals. The voltage across the circuit under test is between the measured by the instrument; this voltage is then used to calculate resistance (R = V/I). 1.
Page 21: Compensation Of The Measurement Leads
3.6.1 Compensation of the Measurement Leads Short the input terminals by touching them together. Then press the and hold it down for >2 s. The LCD should display 0 Ω. If current is 0 mA when the terminals are shorted, verify the fuse is good. NOTE: If the resistance of the leads is >5 Ω, compensation is not possible.
Page 22: Differential Mode Resistance (Dmr) Mode
3.7.1 Differential Mode Resistance (DMR) Mode In the resistance measurement mode, there is a very useful feature called the Differential Mode Resistance (DMR). It can be used as an incoming inspection tool, a radiant heat element qualifying tool or a quality check on production lines to name a few.
Page 23: Resistance Mode Alarm Indicators
3.7.2 Resistance Mode Alarm Indicators ■ Before starting an insulation measurement, pressing the activates the alarm. The alarm threshold is displayed, along with the symbols.  ■ If the measurement exceeds the threshold, the symbol is displayed. ■ If the measurement is below the threshold, the instrument emits a continuous ×...
Page 24: Untimed Test (Including Unlocked And Locked)
Description Lock the TEST button. In this mode, after you start the measurement, it continues without requiring you to keep 1st press the TEST button pressed. The test will run until you stop it, or when 40 minutes have passed. Activate timed test mode.
Page 25 When the insulation measurement stabilizes, it appears on the primary display (§ 2.5). The secondary display (§ 2.5) shows the test voltage.  250 V Ω 500 V kΩ 1000 V MΩ MΩ 6528 rotary switch shown When performing insulation measurement, you can press the key to enable the alarm feature.
Page 26: Timed Test (Including Pi And Dar)
3.8.2 Timed Test (Including PI and DAR) Both the Model 6528 and Model 6529 can perform timed tests that stop automatically after a defined duration. In addition, the Model 6529 can perform polarization index (PI) and dielectric absorption ratio (DAR) tests. Polarization index is a useful indicator of motor insulation health.
Page 27: Programming The Polarization Index T1 And T2 Test Time Points
7. The primary display will show the PI ratio. Ω 3.8.2.2 Programming the Polarization Index T1 and T2 Test Time Points 1. Select the desired insulation resistance test voltage using the rotary switch. 2. Press the SET-UP key three times until you see PI on the top line of secondary display along with the test run time.
Page 28: Programming Dar The T1 And T2 Test Time Points
Generally, ratios of 1.25 or less are considered questionable. Ratios between 1.25 and 1.6 are considered acceptable and ratios higher than 1.6 are considered good. 1. Turn the rotary switch to an insulation voltage setting. Choices are 250 V, 500 V, 1000 V (available on both the Models 6528 and 6529) and 50 V and 100 V (available on the Model 6529 only).
Page 29: Performing A Timed Test
4. Once completed press the SET-UP again. 5. The time T2 will now appear in the secondary display with the first digit blinking; repeat the ▲ and ► arrow sequence to adjust the desired time for T2. 6. Press the TEST button to lock-in the new times for T1 and T2.
Page 30: Insulation Resistance Mode Error Indicators
3.8.2.6 Insulation Resistance Mode Error Indicators ■ The instrument displays the AC+DC voltage. If it is >30 V, the symbol is displayed to warn the user that the voltage on the terminals is hazardous, the instrument emits a pulsed beep and pressing the TEST button is restricted from performing a test.
Page 31: General Specifications
4. GENERAL SPECIFICATIONS Maximum Voltage 700 V or DC Applied to Terminals Storage Temperature (-40 to 140) °F (-40 to 60) °C Operating Temperature (14 to 122) °F (-10 to 50) °C Insulation 4000 PPM/°C, Ohm/Cont 2 %/10 °C+2D, Temperature Coefficient V 0.3 %/10 °C+D Relative Humidity (10 to 90) %...
Page 32: Electrical Specifications
5. ELECTRICAL SPECIFICATIONS 5.1 GENERAL CONDITION OF REFERENCE Influencing Quantity Conditions of Reference Ambient temperature 73.4 °F ± 5.4 °F (23 °C ± 3 °C) Relative humidity [45 %; 75 %] Electric field ≤ 0.1 V/m AC Power supply (batteries voltage) (8 to 9) V 5.2 AC/DC VOLTAGE MEASUREMENT Uncertainty...
Page 33: Ground Bond Resistance Measurement
5.4 GROUND BOND RESISTANCE MEASUREMENT Uncertainty Range Resolution ± (% of Reading + Digits) 400 Ω 0.1 Ω 4 kΩ 1 Ω kΩ ± (1.2 %+ 3 cts) 40 kΩ 10 Ω 400 kΩ 100 Ω Resistance of Test Leads: ≤...
Page 34 Uncertainty Output Range Display Range Resolution Test Current ±(% of reading Voltage + Digits) 4 MΩ (0.01 to 4.000) MΩ 0.001 MΩ 50 V* 1 mA @ 50 kΩ 40 MΩ (3.60 to 39.99) MΩ 0.01 MΩ (0 to +25) % 400 MΩ...
Page 35: Maintenance
6. MAINTENANCE The instrument has no parts that can be replaced by personnel who are not trained and approved. Any non-approved repair or other work, or replacement of a part by an equivalent, may severely compromise safety. 6.1 CLEANING Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
Page 36: Repair And Calibration
If the instrument is returned for calibration, we need to know if you want a standard calibration or a calibration traceable to N.I.S.T. (includes calibration certificate plus recorded calibration data). Ship To: Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ®...
Page 37: Limited Warranty
CSA Form and other required paperwork along with the next steps to complete the request. Then return the instrument along with the signed CSA Form. Please write the CSA# on the outside of the shipping container. Return the instrument, postage or shipment prepaid to: Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ®...
Page 38 NOTES:...
Page 39 NOTES:...
Page 40 99-MAN 100491 v07 AEMC Instruments ® 15 Faraday Drive • Dover, NH 03820 USA Phone: +1 (603) 749-6434 • +1 (800) 343-1391 • Fax: +1 (603) 742-2346 www.aemc.com © 2020 Chauvin Arnoux , Inc. d.b.a. AEMC Instruments. All Rights Reserved. ® ®...

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