• Measure Insulation Resistance to 20GΩ
• 5 Test Voltage ranges
• Polarization Index (PI) and Dielectric Absorption Ratio measurements (DAR)
• Low Resistance measurement with Zero function
• Programmable Timer feature sets the duration of test
• Comparison Mode allows user to set the Pass/Fail values for insulation measurements
• Step Voltage (10% steps at 50% to 120% of range)
• Auto-discharge of voltage test signal
• Lock Power On Function for hands-free operation
• Manually store/recall up to 99 readings
• Backlit 6,000 count display with analog bargraph
• High voltage and overload indication
• Data Hold to freeze displayed reading
• Auto Power Off and Low battery indication
• Complete with test leads, alligator clip, 6 x AA batteries, and soft case

Extech MG320 CAT IV Insulation Tester/True RMS Multimeter Specifications:

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The Extech MG310 comes complete with test leads, alligator clips, 6 x AA batteries, hard cover, and soft carrying case.

The Extech MG310 Features:

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Extech 380260 General specifications 

Display                                     LCD with dual display

Sampling rate                           2.5 readings per second

Continuity beeper                     <40Ω, short circuit current <200mA, open circuit voltage 4.5V

Over range indicator                 ‘1’ displayed

Zero adjust                               Automatic

Low battery indicator                Low battery symbol displayed when battery voltage is low

Environmental                          Installation category II, Pollution Degree 2, Altitude up to 2000 metres, Indoor use only

Power source                           Six (6) 1.5 ‘AA’ batteries

Fuse                                         250mA/600V ceramic 3AG Fast blow

Operating conditions                0 to 40°C (32 to 104°F); 80% RH

Storage conditions                   -10 to 460°C (14 to 140°F); <80% RH

Dimensions                              200 x 92 x 50mm (7.8 x 3.6 x 1.9”)

Weight                                      700g (24.6oz)

IEC 1010                                  CAT III-1000V

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Extech MG325 Features:

• DC and True RMS AC Voltage Measurments to 600V
• CAT IV-600V safety rating
• Insulation Resistance Measurements up to 200G
• Frequency of the AC Voltage
• Leakage Current Insulation test mode
• Capacitance Measurements
• Low Resistance and Continuity Measurements with ZERO function
• Auto Ranging measurments
• Polarization Index (PI) and Dielectric Aborption Ratio (DAR) tests
• Five (5) Insulation Resistance test voltages (50, 100, 250, 500, and 1000V)
• Insulation Resistance tests in 10% voltage steps (from 50% to 120% of range)
• Eight (8) Insulation Resistance measurement ranges (automatic ranging)
•  Pass/Fail Comparator function for Insulation Resistance and Continuity
• Auto-discharge at end of test
• Output voltage alert light and display symbols
• Hand’s free test lock feature Manually store and recall up to 99 readings
• Overload indication
• Remote test probe for controlling the TEST button remotely
• Test leads, alligator clips, batteries, user manual, and case included

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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.

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Designed for users outside of North America because of its 433 MHz wireless transmitter frequency, the Extech MG302 is a true RMS multimeter with built-in insulation resistance tester with the added safety of wireless data streaming for remote monitoring and data recording. By adding insulation testing capabilities to this CAT IV-rated digital multimeter, electrical troubleshooters will always be equipped for insulation testing, helping to make it a more routine part of predictive maintenance with faster troubleshooting and repairs without the need for additional tools.

MG302 Features Overview

The rugged and waterproof (IP67-rated) combination meter includes a digital insulation resistance tester (or megohmmeter) with four different test voltages for measuring resistance up to 4 GΩ with 0.001 MΩ resolution. The full-function, true RMS digital multimeter includes useful extras, like duty cycle measurements and milliamp readings for analog 4-20 mA current loops in industrial analog process controls. The MG302 also has built-in wireless data recording for safer troubleshooting and maintenance on moving equipment, one-person operation of remote safety switches, and the ability to monitor real-time readings on a laptop or computer screen from safe distances — up to 30 feet away — to detect intermittent anomalies.

Applications

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.

Specifications:

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