Megabras Digital Insulation Resistance Tester from the United States

• Product Overview

• MD5KVR is a 5 kV digital insulation resistance tester with insulation analysis function, suitable for insulation resistance measurement and diagnostic analysis of electrical equipment such as power transformers, cables, motor windings, switchgear, etc. This instrument is controlled by a microprocessor and can measure insulation resistance values up to 5 T Ω. MD5KVR supports four pre selected test voltages (500 V, 1 kV, 2.5 kV, 5 kV), and users can also choose their own test voltage in steps of 25 V or 500 V within the range of 50 V to 5 kV to meet the testing needs of different voltage levels.

• Technical Specifications

• Technical Specifications	Detailed information
  Measurement range of insulation resistance	Up to 5 T Ω
  Pre select test voltage	500 V、1 kV、2.5 kV、5 kV
  Adjustable test voltage range	50 V～5 kV， Step size can be selected from 25 V or 500 V
  Test voltage accuracy	± 3% (nominal test voltage, under load of 10 G Ω)
  Basic accuracy (insulation resistance)	± 5% reading (measurement range of 1 M Ω~1 T Ω, under 5 kV test voltage)
  display screen	Alphanumeric LCD with backlight control
  Automated testing function	Absorption Index, Polarization Index, Step Voltage Test, Dielectric Discharge Test, Ramp Test
  Additional measurement parameters	Capacitance measurement, leakage current measurement, AC/DC voltmeter
  timer function	Programmable test duration timer, built-in timer displays the tested time (minutes/seconds)
  data storage	Built in non-volatile memory, capable of storing up to 16000 sets of measurement data
  data interface	USB interface (for data transfer to PC); Bluetooth interface (for remote control)
  built-in printer	Yes (supports real-time printing of test records)
  Analysis and management software	MegaLogg3 (used for in-depth analysis of test results, graphical display, and automatic report generation)
  Android Remote Control	Support remote operation by running BlueLogg application on Android devices (can take photos of the tested object, record GPS coordinates, and make voice notes)
  power supply method	Rechargeable LiFePO4 battery with 12V/6000 mAh, equipped with intelligent charging circuit, charges according to optimized parameters to extend battery life
  Battery cycle life	About 2000 charge discharge cycles (average expected value)
  Self discharge characteristics	When not in use, the rate of battery degradation is lower than other common battery technologies
  Battery safety	LFP batteries have good thermal and chemical stability, which helps to improve safety during use
  Chassis characteristics	Durable, lightweight, and impact resistant, suitable for on-site testing in complex environments
  Real time function	Built in real-time clock and calendar, supporting the organization, identification, and management of test data by test number and date/time, facilitating trend analysis and predictive maintenance
  Configurable functions	Pass Tail judgment criteria can be set
  warranty period	The host comes with a 2-year original factory warranty, and the attachment comes with a 6-month limited warranty

• Core Features and Application Value

• 1. Wide range and multi voltage output, suitable for various insulation testing needs

• MD5KVR can measure insulation resistance values up to 5 T Ω, and the test voltage can be flexibly selected within the range of 50 V to 5 kV. It provides four pre selected voltages (500 V, 1 kV, 2.5 kV, 5 kV), as well as fine settings in 25 V or 500 V steps, making it easy to conduct targeted testing on low-voltage and high-voltage electrical equipment. Supporting Step Voltage Test and Ramp Test helps analyze the performance of insulation materials under different voltage stresses.

• 2. Automated testing and diagnostic functions to improve evaluation efficiency

• The MD5KVR is equipped with multiple automated diagnostic functions, which can automatically measure and calculate the Absorption Index and Polarization Index, which are important indicators for evaluating the degree of insulation moisture and aging status. The device also has a dielectric discharge test function, which can be used for diagnosing the degradation of multi-layer insulation structures. The built-in timer supports programming the testing duration, and the timer displays the tested time in real-time (minutes/seconds), making it easy to perform standardized insulation absorption testing procedures. Users can also set the Pass Tail judgment threshold, and the instrument will automatically judge the test results, making it easy to quickly screen for unqualified items.

• 3. Measurement of capacitance and leakage current, comprehensive analysis of auxiliary insulation

• In addition to insulation resistance, MD5KVR can also simultaneously measure the capacitance and leakage current values of the tested object. Capacitance measurement can be used to evaluate the geometric properties and changes in dielectric properties of insulating materials; Leakage current measurement helps identify local defects on the insulation surface or inside. These parameters, combined with the insulation resistance value, can provide a more comprehensive basis for judging the insulation state.

• 4. Bluetooth remote control and intelligent on-site data collection

• MD5KVR can be remotely controlled by Android devices with BlueLogg application installed through Bluetooth interface. During on-site testing, technicians can use this application to take photos of the tested equipment, record GPS coordinates, and add voice notes to each measurement for easy traceability and report preparation in the future.

• 5. Data storage, printing, and trend analysis management

• The MD5KVR has a built-in non-volatile memory that can store up to 16000 sets of test results. The instrument is equipped with a thermal printer, which can print test records in real-time at the testing site for easy archiving and handover. The combination of real-time clock and calendar functions with test numbers can assign complete time labels to each measurement, making it convenient to organize data in chronological order. By transferring data to the MegaLog3 analysis software on the PC through the USB interface, graphical analysis can be performed, test reports can be generated, and long-term trends can be analyzed to support the establishment of a predictive maintenance system.

• 6. Portable design and high safety battery power supply

• The MD5KVR adopts a lightweight and impact resistant chassis structure, suitable for laboratory and on-site testing environments. The device is powered by a LiFePO4 (lithium iron phosphate) rechargeable battery with a capacity of 12 V/6000 mAh and an expected lifespan of approximately 2000 charge discharge cycles. This battery has a lower self discharge rate than other common battery technologies when not in use, and has good thermal and chemical stability, which helps to improve safety during use. The built-in intelligent charging circuit can charge according to optimized parameters, which helps to extend the battery's lifespan.