EXTECH 380363 Digital High Voltage Insulation Tester


Autoranging insulation measurements to 10MOhm plus manual datalogging


  • 250V, 500V and 1000V test voltages
  • Measure Insulation Resistance to 10GΩ
  • Large LCD display with analog bargraph
  • Lo ohms function for testing connections
  • Automatic discharge of capacitive voltage charges
  • AC/DC voltage measurement up to 999V
  • Manual data record and read function (9 sets)
  • Live circuit display warning and beeper
  • Complete with carrying case, test leads, and 6 x AA batteries

Authorised Australian Distributor

CE   CAT III   1 Year

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SKU: EXTECH 380363 Category: Tags: ,

Digital High Voltage Insulation Tester

EXTECH 380363 Digital High Voltage Insulation Tester measures Insulation Resistance to 60GΩ 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.

The Model 380363 provides three test ranges plus continuity and AC/DC voltage measurement. Manual datalogging stores up to 9 data sets

Auto Power Off To conserve battery life, the meter will automatically turn off after 15 minutes of non-use. To turn the meter back on, turn the rotary switch to OFF, then to the desired function. Analog Bar Graph The analog bar graph displays resistance on a logarithmic scale and voltage on a linear scale. The value always tracks the main display.

Using the Extech 380363  LOCK Function to measure resistance The Lock function can be used to make several resistance measurements in succession without the need to push and hold the TEST key for each measurement. Note: The meter cannot indicate if the circuit is live in this mode. Ensure that the circuit is de-energized before connecting the test leads or the fuse may blow.

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.

Insulation Resistance 4MΩ, 40MΩ, 400MΩ, 4000MΩ, 10GΩ
Max Resolution 1kΩ
Basic Accuracy ±3%
Insulation Test Voltages 250V, 500V, 1000V
AC Voltage Test Yes
Low Resistance Test Yes
Power source 6 x AA batteries
Dimensions 235 x 116 x 54mm
Weight 520g


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