Best Ac Voltage Insulation Resistance Meters in 2026

True-RMS clamp meter: This multimeter can accurately measure AC/DC Current, AC/DC Voltage, Frequency or Duty Cycle, Resistance, Capacitance and also provides Diode, Continuity and Temperature tests. True RMS for accurate measurements on non-linear loads. Easy to use for labs factories and household.

LowZ & LPF: Low input impedance helps prevent false readings due to ghost voltage. Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals when measuring motors and transformer. To measure the current you need to clamp the meter around one of the wires and not the whole power cord.

NCV Detection Function: Non-contact voltage detection effectively check electrical status through measuring EM field intensity without touching any wires; The NCV button lies on the right side. Simply place your thumb on it and push.

Digital clamp meter measures AC current to 400 amp, AC and DC voltage to 600 v, and resistance to 4 kilo ohms. Does not measure DC current

The true RMS sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of waveform

Jaw opening measures current in a conductor up to 30 millimeter without touching or interrupting the circuit. Resistance accuracy: 1.0% ± 5 digits

✅【True-RMS 1000A Clamp Meter】This clamp multimeter can accurately measure 1000 Amp AC/DC Current, 1000V DC 750V AC Voltage, Inrush current test, Live wire identification, Frequency, Resistance, Capacitance, Diode, Continuity, and Temperature. A perfect troubleshooting tool that will help you solve electrical problems in the car, labs factories, industrial or at home quickly and safely.

✅【Inrush Current Meter】Measure the maximum current at the moment when the machine is started, which can help you locate a startup problem quickly, whether it's in the motor or in the starting circuit. set the gear to AC and DC current gear,short press to enter INRUSH measurement.

✅【Advanced Functions】The clamp multimeter is designed according to ergonomics to made sure maximum comfort when using the clamp meter, has the characteristics of high reliability, high safety, automatic range, handheld clamp meter, etc. The Clamp Meter has Variable Frequency Drive Filtering (VFD) and low Input Impedance (LoZ) modes, which can provide higher accuracy readings.

【T-RMS Clamp Meter with Multifuntions】The Digital Clamp Meter can accurately measure 1000 Amp AC/DC Current, 1000V DC/750V AC Voltage, Frequency, Duty Cycle, Resistance, Capacitance, Diode, Continuity, and Temperature. Easy to use for labs factories and households.

【Hold Function & Auto-range】Short press the Hold button to hold a stable measurement reading. Automatically select the measuring range that is best suited for the measurement performed. The measuring unit and resolution are adjusted at the same time.

【Advanced Designs & Larger Jaw】The multimeter is easy to carry and store with a compact design and has the characteristics of high reliability, automatic range, handheld clamp meter, etc. A larger jaw design can measure the maximum wire diameter of 2.6 inches, well meeting your operating habits and measurement needs.

【True-RMS High Accuracy Clamp Meter】This digital clamp meter multimeter can accurately measure max 600A DC / AC current, 600V DC / AC voltage, resistance, capacitance, Continuity, temperature, diode and frequency (Hz).A perfect troubleshooting tool that will help you solve electrical problems in the car, industrial or at home quickly and safely.

【Multi-Function】Digtal backlit LCD display - LED Flashlight, Temperature Measurement for liquids and air conditioning ports, Low Battery Indication, Data Hold, True-RMS, ZERO, Automatic range, SEL fuction, Auto power off after 10 minutes inactivity, Non-Contact AC Voltage Detection,full-range overload protection.

【Easy to read】The AC/DC clamp meter has a backlit screen and led flashlight so you can see the readings when working in dim or low-light conditions,like electrical closets, under buildings, behind appliances, and in other enclosed spaces,Convenient LED flashlight illuminates a dimly lit area. Note: When the screen backlight and the flashlight is turned on at the same time, the clamp meter turns the knob switch, the flashlight will be turned off, saving electricity.

The insulation resistance tester features voltage measurement range from 250V to 1000V, resistance range from 0.1MΩ to 5GΩ, DC voltage range from 20 to 1000V, and AC voltage range from 20 to 750V (45~1kHz). It has range selection, data hold function, and accurate reading, which meets the needs of electricity and household maintenance.

Large LCD screen with backlit display, high-definition LCD display, maximum display of 9999, clear and uniform characters, with unit symbols displayed. Backlight allows for use in low light or dark environments. The backlight can be turned on or off, providing energy-saving options.

The instrument can be powered by both batteries and an external power source through a DC12V power adapter jack. With the adapter, there's no need to worry about running out of power.

【Quickly detect values and troubleshoot】The clamp meter can measure not only for AC current but also for DC current,AC and DC voltage, resistance, capacitance, continuity,diode and frequency (Hz),live/zero wire; Digital clamp meter is a perfect troubleshooting ammeter tool, you can accurately troubleshoot vehicle or internal electrical problems in a fraction of the time and get the job done more efficiently.

【Double Open Clamp】The maximum wire diameter that the fieldpiece multimeter can measure is 1.33 inches without interrupting the circuit. Double open jaws meet your operating habits

【NCV Defection Function】Non-Contact Voltage (NCV) Detector can easily and quickly determine whether there is a voltage.The NCV non-contact AC voltage detection function can be switched by short pressing the NCV button in any gear.

【Non contact Voltage Testing】: Stable, safe and reliable 3 1/2 digit LCD digital clamp meter, capable of AC/DC voltage, AC current, resistance, diode measurement, with on-off test and with backlight function. Tip: CM10 clamp meter can only measure AC current (can not measure DC current);

【Multi Functional Auto-Ranging Amp Meter】: Current grade added frequency power test function, when testing the current only need to switch to the frequency function to check the frequency of the circuit, no need to use the electric pen. Support Data Hold, Max/Min, Auto power off after 15 minutes inactivity, low battery indicator and continuity buzzer;

【True RMS Multimeter Clamp】: Accurate measurement of non-sine wave power function, the measurement result is true RMS, can accurately measure all current waveform;

✅【High Insulation Resistance Tester】Digital Autoranging Megohmeter measures high insulation resistance 0.1M～200G ohms with accuracy 3%~10% + 5 digits.

✅【Wider Testing Voltage】The output testing voltage can be selected from 100V/250V/500V/1000V/2500V/5000V. This Insulation Resistance Tester comes with a non-slip and anti-fall protective case which is insulative.

✅【Safe and Reliable Mega Ohmmeter】 IEC-1010 double insulation, overvoltage category Ⅱ safety standard rated. During any rated voltage measurement, if the measured resistance is less than 5M ohms, the measurement time should not exceed 10 seconds.

✅【Excellent Performance】Testing Voltage:500V/1000V/2500V/5000V；Insulation Resistance:1MΩ~200GΩ；AC Voltage:1V~750V；Frequency Range:40Hz~400Hz.

✅【Safe and Reliable Design】The AP-6688B Insulation Resistance Tester comes with a blue protective sheath which is insulative, non-slip and anti-fall. The product design complies with the IEC-1010 double insulation, environmental pollution degree II and over-voltage category II safety standard issued by IEC.

✅【Gather all the Functions That You Need】AP-6688B insulation resistance tester 1999 counts LCD display, data hold, auto ranging, low battery indication,backlight and HV red indication lamp light.

An accurate, reliable and easy-to-use insulation tester

Large LCD display, easy to read,Unit symbol display, easy to use

Strong anti-magnetic and anti-jamming function

【Professional resistance tester】The insulation resistance tester has a voltage output of 1000V, a maximum range of 5GΩ, and an AC voltage measurement function (30V～750V (50Hz/60Hz)), automatic range, data retention, and accurate readings to meet the needs of electricity and home maintenance.

【Easy operation】The electrical tester has a high-definition LED large-screen display, the maximum display is 9999, automatic backlight, the backlight automatically turns on when measuring, and turns off when it stops. The reading can be clear even in dark environments.

【Energy saving and power saving】Low battery warning display, the instrument will automatically shut down after 10 minutes without operation, long battery life, and there will be a red warning light when high-voltage output to ensure safety and efficiency.

1.MULTI-FUNCTIONAL MULTI-METER INSULATION TESTER--The insulation resistance tester can perform continuous low resistance measurement, AC voltage measurement, low resistance zeroing and other functions.

2.HIGH ACCURACY AND STABLE PERFORMANCE DIGITAL EARTH RESISTANCE TESTER--The insulation resistance tester megohmmeter have high degree of accuracy, stable performance, easy operation and reliability

3.MULTI-FUNCTIONAL AND ECONOMICAL SUPPORTS EASIER OPERATION--Support automatic measurement, auto discharge, PI and DAR measurement, auto resistivity calculation, low battery indication, LCD backlight, alarm light display, alarm buzzer,display count 2000

👉【Test voltage combinations】500V,1000V,2500V or 5000V;AC Voltage:750V.

👉【Battery Included】Contain 6*1.5V (AA) Battery.Comes with a rechargeable function that lets you recycle your battery,Don't need to replace batteries frequently.

👉【Insulation Resistance】1MΩ～200GΩ.A large range for you measure the insulation resistance.

▼ 【highly reliable and versatile tool designed】The VC60B resistance tester is a highly reliable and versatile tool designed for accurate resistance measurements. Its backlight LCD screen display ensures clear visibility of readings, with a maximum reading capacity of 1999. This feature allows for effortless monitoring and precise analysis of resistance values.

▼ 【convenient and practical features】The latest upgraded version of the VC60B resistance tester includes several convenient and practical features. The measuring key lock function allows users to lock their desired measurement settings, preventing accidental changes during operation. Additionally, the insert prompt symbol provides visual cues and guidance, ensuring correct insertion of test leads for accurate measurements. These enhancements significantly improve usability and efficiency.

▼ 【Safety】Safety is a top priority in the design of the VC60B resistance tester. It is equipped with robust protection functions that effectively withstand impacts caused by short circuits and residual voltage in the measured circuit. This protective feature safeguards both the instrument and the user, providing a reliable testing experience.

True-RMS clamp meter: This multimeter can accurately measure AC/DC Current, AC/DC Voltage, Frequency or Duty Cycle, Resistance, Capacitance and also provides Diode, Continuity and Temperature tests. True RMS for accurate measurements on non-linear loads. Easy to use for labs factories and household.

LowZ & LPF: Low input impedance helps prevent false readings due to ghost voltage. Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals when measuring motors and transformer. To measure the current you need to clamp the meter around one of the wires and not the whole power cord.

NCV Detection Function: Non-contact voltage detection effectively check electrical status through measuring EM field intensity without touching any wires; The NCV button lies on the right side. Simply place your thumb on it and push.

Features of UT500 Series Insulation Resistance Testers Certifications: CE, UKCA ● 2000 count LCD display, overload indication, backlight ● AC voltage measurement, auto power off ● Auto discharge ● Continuous low resistance measurement ● Continuous measurements mode, red warning light and buzzer function ● PI and DAR measurement, auto resistivity calculation ● Low resistance returning to zero function to improve accuracy

General Characteristics Power 1.5V battery (LR6) x 6 Display 70.6mm x 34mm Product color Red and grey Product net weight 500g Product size 150mm x 100mm x 71mm Standard accessories Batteries, test leads, alligator clips, gallus, test probes (UT502A) Standard individual packing Gift box, carrying bag, English manual

MULTI-FUNCTIONAL MULTI-METER INSULATION TESTER--This insulation resistance tester can measure insulation resistance, AC voltage, etc

MULTI-FUNCTIONAL MULTI-METER INSULATION TESTER--This insulation resistance tester can measure insulation resistance, AC voltage, etc

HIGH ACCURACY AND STABLE PERFORMANCE DIGITAL EARTH RESISTANCE TESTER--High degree of accuracy, stable performance, easy operation and reliability

Large 9999 display with 30-segment analog bar graph, PI/DAR measurements

Comparison, upper and lower limit functions, Continuous measurement mode

Auto current discharge and high-voltage output alarm, Low battery and over range indications

【Measurement Mode】Gear selection,you can choose the measurement range you want,so that you can use in many situations.Powered by 6 AA batteries (NOT included).This Earth Resistance tester also has Maximum/minimum/average measurement function.It Can also be used to AC/DC voltage measurement and continuity test. Automatic calculation of PI (polarization index) and DAR (dielectric absorption ratio).This Earth Resistance Test the insulation resistance with 250V-2500V voltage.

【Excellent Design】This grounding resistance meter has double insulation protection for safer measurement.The multi-slot card-type protective sleeve is closely fitted with the meter, so that the meter is non-slip and anti-fall.The meter is capable of storing up to 28 groups of measurement data.Lock function: lock data during insulation test.Timing function: timing function during insulation test.Automatic discharge: the meter will automatically discharge when the load is capacitance.

【Easy Reading】This Digital megohmmeter has Large digital LCD and backlight applied to the meter facilitate users to read the information on LCD.Large-screen high-definition backlight: Press the backlight button to turn the backlight on or off.And this Earth Resistance tester Display: has analog bar and digital dual display function.Under voltage indication.Press Hold button to freeze the displayed value. Press again to release the display.

Insulation resistance meter measures voltage, current, capacitance, and insulation resistance in high-voltage electrical equipment

Multiranging digital meter performs timed IR, PI, DAR, DD, SV, and ramp tests

Memory includes time/date stamping of results, data logging, and USB download

【T-RMS Clamp Meter with Multifuntions】The Digital Clamp Meter can accurately measure 600 Amp AC/DC Current, 600V DC/600V AC Voltage, Resistance, Capacitance, Diode, Continuity,Live/Zero wire. Easy to use for labs factories and households.The voltage tester is suitable for frequency conversion power supply, refrigeration equipment such as air conditioners and refrigerators, and motor performance testing.

AC Current Tester

【NCV Defection Function】Non-Contact Voltage (NCV) Detector can easily and quickly determine whether there is a voltage.The NCV non-contact AC voltage detection function can be switched by short pressing the NCV button in any gear.

【Wide Measuring Range】Accurate and reliable,wide test range.Testing Voltage:500V/1000V/2500V5000V,AC voltage to 750V,accuracy:+/-2%. Insulation resistance: 1M-200G ohm,accuracy:+/-3%.

【Double Protection】IEC 61010-1 & CATIV 600V / CATIII 1000V overload protection on all ranges, anti high voltage circuit design.with a blue protective sleeve ,non-slip and anti-fall.

【Widely Use】Wide range of applications,such as transformer,motor,cable,switch and electrical facilities.An ideal tool for electric equipment maintenance,testing and inspection.

An accurate,reliable and easy to measure insulation resistance,voltage.

Wide measuring range,voltage:250V/500V//750V1000V, resistance:0.1MΩ～2000MΩ.

Large LCD backlight display,convenient to read data,max display counts 1999.

【WIDELY USED】This digital earth tester can measure grounding resistance as well as AC voltage to 200V, and it also can be used in the grounding resistance measurements of power system, electrical device, lightning protection device, etc. What’s more, it is also equipped with dust proof and moisture proof structure, which make it can be used in field operation.

【ACCURATE & RELIABLE & EASY】This digital earth tester has improved the circuit, structure as well as process of the traditional grounding resistance tester so that its functions are more complete, the accuracy is much higher, and the operation is more convenient and reliable.

【OVERLOAD PROTECTION】This digital earth tester has a complete overload protection circuit that any two terminals can withstand AC 380V for a minute.

【Measuring Range】The Clamp-on earth ground tester can measure the ground resistance from 0.01Ω to 1000Ω

【Functions】The insulation tester With the the clamp on the loop, the meter can get the resistance value safely and quickly without disconnecting circuit ground lines or in needless of auxiliary electrodes

【Features】ATO clamp meter, can Auto range, Data hold, Data storage, LCD backlight, Auto calibration etc.

【Test Voltages】The insulation resistance tester has selectable test voltages of 500V, 1kV, 2.5kV and 5kV with the capabilities of testing insulation resistance up to 1000 MΩ

【Features】Battery-powered Megohmmeter and Multimeter, is easy to use, stable performance , large backlit LCD display, the reading can be clear even in dark environments

【Applications】The Digital Megohmmeter is ideal for testing high voltage equipment such as transformers, genera-tors, high voltage motors, power capacitors, power cables, arresters and so on, is an ideal tool for electric maintenance, testing and inspection

【Test Voltage Rang】 The insulation resistance tester with test voltage rang of 500V, 1000V, 1500V and 2500V,with testing insulation resistance up to 100 GΩ

【Features】The Megohmmeter and Multimeter is High accuracy and reliability, Data storage： 18, Auto ranging and Auto power off, LCD backlight

【Application】The insulation tester is designed to make insulation resistance measurement of large transformers, generators, high-voltage motors, cables and so on, is an ideal tool for electric maintenance, testing and inspection

Applications:It is an ideal test instrument for measuring insulation resistance of transformers, transformers, generators, high voltage motors, power capacitors, power cables, lightning arresters, etc.

Premium Performence:With AC voltage measurement function.With CONTINNUIY low resistance grounding continuity measurement function.ZERO low resistance zero function to improve measurement accuracy.PI polarization index and DAR insulation absorption ratio measurement, automatic calculation of resistance ratio.

Professional Function:Mainly used to check the insulation resistance of electrical equipment, household appliances or electrical lines to the ground and phase to ensure that these equipment, electrical appliances and lines work in a normal state, to avoid accidents such as electric shock, injury and equipment damage.

Wide range of uses: the lightweight design of the resistance meter tester is convenient for field work. It is suitable for the workshop, post, railway, roommate, chemical industry, communications, mining and other departments to measure the grounding resistance of various equipment. It is widely used in insulation resistance measurement of insulating materials and various electrical equipment such as transformers, motors, cables, switches, and electrical appliances.

LCD large screen display: This digital grounding tester has a large digital LCD display, and the instrument is equipped with a backlight to facilitate users to read the information on the LCD display. The ground resistance tester has undervoltage indication. Over-range "OL" display. The longest use time is 1999, and the full symbol is displayed.

Multiple measurement modes: gear selection, you can select the desired measurement range for use in many situations. The ground resistance tester has the functions of automatic range, low voltage indication, overload indication, manual range and output voltage. With data storage function (20 groups of data).