When it comes to choosing your dielectric tester, there are hundreds of different choices. In our review, weve considered all the various features youll need to know before buying the best dielectric tester. We hope that through this article, with our comparison table, in-detail review of each product can help you decide which one is your best dielectric tester.
Best dielectric tester
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Best dielectric tester reviews
1. Extech 380260 Autoranging Digital Insulation Tester
Feature
Measures insulation resistance up to 2000M?250V, 500V and 1000VDC test voltages
Measures AC voltage up to 750V and DC voltage up to 1000V
Continuity and 200? and 200k? resistance ranges
Dual backlit LCD display test voltage and insulation resistance
Description
The Extech Handheld Megohmmeter tests voltage of 250, 500 and 1000 Volts, and insulation resistance up to 2000 mega ohms with 0.1 resolution. Case Included: Yes, Display Shows: Insulation resistance, test voltage, Measures: Voltage and insulation resistance2. Extech MG310 Compact Digital Insulation Tester
Feature
Test Voltages of 250V, 500V and 1000VMeasure Insulation Resistance to 5.5G (auto ranging)
AC Voltage measurement from 30 to 600V
Polarization Index measurement (PI)
Dielectric Absorption Ratio measurement (DAR)
Description
The MG310 is a Compact Insulation Resistance Tester which allows quick and easy testing/troubleshooting of motors, transducers and other industrial appliances. Wide range measurement up to 1000V with Insulation Resistance to 5.5G. Includes an easy snap on protective hard cover and soft pouch to conveniently transport your meter and accessories to the next job site or to safely store away. Featuring Low Resistance measurement with Zero function, Continuity beeper, Large 2000 count dual display with backlight, High voltage and overload indication, Auto-discharge and voltage output warning functions as well as Low battery indication. Complete with test leads, alligator clips, 6 x AA batteries, hard cover and soft carrying case.3. Fluke 1507 Digital Megohmmeter, 50/100/250/500/1,000V Test Voltages, 10 Gigaohms Insulation Resistance, 20 Kilohms Low-Resistance, 600V Voltage Detection
Feature
Repetitive or hard-to-reach testing is easy with the remote test probeLive circuit detection prevents insulation test if voltage greater than 30-Volts is detected for added user protection
Read measurements easily with large, backlit display
Save both time and money with automatic calculation of polarization index and dielectric absorption ratio
Make repetitive tests simple and easy with the 1507's Compare (Pass/Fail) function
Repetitive or hard-to-reach testing is easy with the remote test probe
Live circuit detection prevents insulation test if voltage greater than 30-Volts is detected for added user protection
Read measurements easily with large, backlit display
Description
Save both time and money with Automatic calculation of Polarization Index and Dielectric Absorption Ratio. -Make repetitive test simple and easy with the Compare (Pass/Fail) function. -Insulation Resistance Tester for Hybrid. Product Type: -Pipe. Generic Specifications: -Insulation test voltages: 50V, 100V, 250V, 500V and 1000V. Dimensions: Overall Height - Top to Bottom: -2.9 Inches. Overall Width - Side to Side: -5.9 Inches. Overall Depth - Front to Back: -11.75 Inches. Overall Product Weight: -3.2 Pounds.4. Amprobe AMB-25 Digital Insulation Resistance Tester
Feature
Insulation resistance meter to test insulation of wires, cables, transformers, and electrical motorsDigital meter with automatic range selection
Internal memory stores up to 9 test results
Measures insulation resistance from 0 to 1,000 megaohms with 250, 500, and 1,000V DC test voltage
Safety rated to European Standard EN 61010-1 Category III 1,000V
Tests insulation of wires, cables, transformers and electrical motors
Selectable test voltages 250V, 500V and 1000V
Programmable timer to perform the dielectric absorption ratio test
Sensitive ohmmeter for checking resistance of motor windings
Description
This affordable and rugged megohmmeters are fast and easy to use, and offer the features you need for most insulation test applications including wires, cables, transformers, and motors.5. Megger 230315 AC High-Pot Tester, 3kV Test Voltage, 12.3mA Current
Feature
High-potential tester measures dielectric strength of electrical insulation and ground-circuit continuity of three-wire appliances and other devicesAnalog meter with manual range selection and adjustable leakage current trip level for flexibility of use
Tests to most UL dielectric withstand standards, including UL 544, UL 982, UL 1026, and UL 1270
Recessed high-voltage connections and automatic failure shutdown with warning light and tone for increased safety
Meets UL 120 kilohm safety requirement
Description
The Megger high-pot tester measures the dielectric strength of electrical insulation and the ground-circuit continuity of three-wire appliances and other electrical devices to determine the ability of insulation to withstand over voltages. This analog meter has manual range selection and adjustable leakage current trip level for flexibility of use. The unit tests appliances and other electrical devices to most Underwriters Laboratories (UL) standards, including UL 544 (Electric Medical and Dental Equipment), UL 982 (Motor-Operated Household Food Preparing Machines), UL 1026 (Electric Household Cooking and Serving Appliances), and UL 1270 (Radio Receivers, Audio Systems, Accessories). Recessed high-voltage connections and an automatic failure shutdown feature, which includes a warning light and tone, increase the safety of the unit. The tester meets the UL 120-kilohm safety requirement. The Megger high-pot tester is commonly used by electricians and electrical contractors.
Specifications
| Maximum output current | 12.6mA |
| Test standards met | Most UL standards, including 544, 982, 1026, and 1270 |
| Power supply | 120V AC electrical outlet with included power cord |
| Safety standard met | Underwriters Laboratories (UL) 120-kilohm requirement |
| Dimensions | 20.6 x 23 x 21cm / 8 x 9 x 8.4 inches |
H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Electrical test meters report electrical circuit properties, such as voltage, resistance, capacitance, and continuity. Available in handheld or benchtop form, they detect electrical problems in equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Single-function meters, such as battery testers and voltage testers, measure one property of a circuit, and multimeters measure multiple properties. Electrical test meters display information either in analog form using a needle that moves on a calibrated scale, or in digital form using digits or a graphic representation on an LED screen. Meters have electrical properties that are to be measured and the anticipated range of results, and should have a rating that is higher than the maximum value of the anticipated range. An electrical test meter has multiple settings corresponding to potential ranges of values for the properties it can measure. A manual ranging meter requires the operator to flip through different settings until the correct range is reached. An autoranging meter cycles through range settings automatically until it reaches the correct range.
Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.
6. VOLTCRAFT Digital Insulation Tester ET-200, Insulation Multimeter, 50/100/ 250/500/ 1000V, 20 G
Feature
HIGHLIGHTS AND DETAILS: Data hold function, Lock function, red warning light in measuring mode, Calculation of polarization index (PI) and dielectric absorption rate (DAR), Setting of testing time for continuous measurement, Comparison function with pass / fail displayTECHNICAL SPECIFICATIONS: Test voltages 50/100/250/500/1000 V, Isolation resistance measurement up to 20 G, Resistance measurement from 0.01 - 20 k
DELIVERY CONTENT: Insulation tester ET-200, 6 Mignon batteries (AA, LR6), 2 safety measuring leads, 2 safety test probes with CAT III/CAT IV cover caps, 2 safety alligator clips, Storage bag, Operating instructions
TEST TIME SETTING: The test time during long-term measurement can be preset depending on the need
GERMAN BRAND: The German brand Voltcraft is committed to provide all users the right equipment in a perfect quality, no matter if they need it for hobby or work
Description
Measure isolation resistances up to max. 20 G with test voltages 50/100/250/500/1000 V. In addition, the ET-200 enables measurement functions for DC and AC voltages up to max. 600 V in CAT IV and for resistors up to 20 k. An optional remote trigger test lead enables the triggering of measurements directly at the probe; For this, the ET-200 does not have to be held in hand during the measurement. Due to the soft rubber protection, the device is ideally protected against impact.7. Extech 380395 Digital High Voltage Insulation Tester
Feature
Test voltages of 500V, 1000V, 2500V, and 5000VMeasure insulation resistance to 60Gohms
Large 6000 count display with bargraph and backlight
Polarization index measurement (PI)
Dielectric Absorption Ratio measurement (DAR)
Description
Digital High Voltage Insulation Tester
Measure Insulation Resistance to 60G with test voltages of 500V, 1000V, 2500V, and 5000V. Comes with test leads, eight C batteries, 120V AC adaptor, heavy duty carrying case, and user manual.
Additional Features
Polarization Index measurement (PI), Dielectric Absorption Ratio measurement (DAR), AC/DC Voltage measurement to 600V with Min/Max, Peak and Relative functions, and 1 to 15 minute timer function for IR measurements.
Application and use of insulation testers:
Insulation testers can be used to test motor, transformer windings, instruments, and appliances, check for moisture in wire and cable assemblies, safely evaluate a new wiring installation, and check for carbon tracking in breakers, relays, and switches. Extech Insulation Testers offer high sensitivity to assure reliable monitoring of low resistance motor windings.
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Handheld Megohmmeter
The autoranging Extech 380260 digital insulation tester has a large, easily readable backlit LCD with dual display of insulation resistance and test voltage. It measures insulation resistance in three selectable voltages of 250, 500 and 1000V and Insulation Resistance to 2000M. A Lock Power On function allows for hands-free operation. Data Hold capability freezes the displayed reading. Additional features include: Lo ohms for testing connections and Auto Power Off for conserving battery life. Comes with heavy-duty test leads, alligator clip, hanging strap, protective carrying case, six AA batteries, and user manual. Optional NIST Certificate of Calibration with data available (Model 380260-NIST).
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Digital Megohmmeter
Safely tests wiring insulation of motor, transformers, instruments and appliances with three test ranges to choose from: 2000M/1000V, 200M/500V, and 200M/250V. Also measures continuity to 200 ohms and AC voltage to 600V. Additional features include: data hold, auto power off and overload protection to 2200V (up to 1 min.). Press To Test button automatically discharges circuit capacitance and can be locked down to enable hands-free operation for 3-minute test. Comes with six AA batteries, heavy-duty test leads, alligator clip, large probe, case with neckstrap, and user manual. Optional NIST Certificate of Calibration with data available (Model 380360-NIST).
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Digital Insulation Tester
Insulation tester measures up to 10Gohms with 250V, 500V, and 1000V test voltages. Additional features include: Lo ohms for testing connections, analog bargraph for viewing trends, AC/DC Voltage measurement to 999V, manual data record/recall function (9 sets), live circuit display warning and beeper, and CAT III-1000V safety rating. Comes with carrying case, test leads, six AA batteries, and user manual.
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Analog Meghommeter
Megohmmeter with large easy-to-read analog display and live circuit warning has three test voltages (250V, 500V, 1000V) and an insulation range to 400M ohms. It also measures continuity (3 ohms), resistance (500 ohms) and AC Voltage (600V). Additional features include: Lock Power On for extended test times, automatic discharge circuit, fuse protection, 1.3mA short circuit current, and CAT III-1000V. Comes with test leads, six AA batteries, hard carrying case, and user manual.
8. Fluke 1550C Insulation Resistance Tester 5 kV, with measurement storage and PC interface
Feature
Selectable test voltages in 50 V steps from 250 to 1000 V, and 100 V steps above 1000 VMeasurements can be stored in up to 99 memory locations, with each location assigned a unique, user defined, label for easy recall
Long battery life gives the user over 750 tests between charges
Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup
Capacitance and leakage current measurement
Description
The Fluke 1550C insulation resistance testers, offer digital insulation testing up to 10kV, making them ideal for testing a wide range of high voltage equipment including switchgear, motors, generators and cables. Fluke insulation testers can now conduct the entire range of test voltages specified in IEEE 43-2000 with a best in class, 3 year warranty and CAT IV 600 V safety rating. With measurement storage and PC interface, the 1550C is the perfect tool for preventative or predictive maintenance programs designed to identify potential equipment failures before they occur. The Voltage breakdown detection alerts the user that voltage is present and gives the voltage reading up to 600 V ac or dc for increased user safety. The automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup. The guard system eliminates the effect of surface leakage on high-resistance measurements. It has a large digital/analog LCD for easy viewing with a timer that has a setting for up to 99 minutes for timed tests. Fluke Corporation is the world leader in the manufacture, distribution and service of electronic test tools and software. From industrial electronic installation, maintenance and service, to calibration and quality control, Fluke tools help keep business and industry around the globe up and running.9. FLIR IM75 Insulation Tester/Digital Multimeter with VFD Filter and Bluetooth
Feature
Advanced Insulation Modes: Insulation Resistance up to 20 G, PI, DAR, Earth Bond ResistanceMultiple ranges of resistance insulation test levels available via rotary switch: 50V, 100V, 250V, 500V, 1000V
Remote viewing of real time readings on AndroidTM and iOSTM smartphones and tablets with METERLiNK connectivity and free FLIR Tools Mobile app.
True RMS DMM measurements features reliable performance and 1000V range
VFD Mode for superior accuracy on variable controlled drive equipment
