EM3500B High Voltage Insulation Resistance Tester, also known as high voltage megohm meter and high voltage insulation resistance meter. The tester has complete various insulation resistance index test functions, self-set voltage test function, and well anti-interference ability. It has obvious advantage in substation and other environments with strong induction and large distributed capacitance. The instrument equip with true-color touch screen, and all test data and battery power are displayed on the same screen which is clear and obvious. The combination of the rotary switch and the button makes the operation very simple. The user does not need to memorize the operation method, and the operation method will pop up by clicking the "HELP" button on the screen, effectively guiding the user to operate the instrument. The tester is suitable for insulation resistance testing of large-scale equipment such as electrical equipment and transmission lines in large-capacity, high-voltage, and strong-inductive environments. It is a commonly used and indispensable instrument in the departments of electric power, telecommunications, meteorology, computer rooms, oil fields, electromechanical installation and maintenance, and power supply departments of industrial and mining enterprises.
The test timer of the instrument automatically records the test time and stores the test results with date and time.The touch screen can easily check the recorded historical data. The completely isolated USB interface and Bluetooth communication can safely upload the test data to the PC or mobile phone for users to analyze data. The instrument provide with the test lines of double-layer insulation and shielding layer. The high-voltage rod is equipped with replaceable alligator clips and hooks, which can be adapted to various test sites, The instrument adopt with solid double-layer shell structure. The protection level of the case is lP65, which can prevent the intrusion of moisture and dust during transportation and storage, and prevent impact and effectively protect the instrument.
ETCRMETER is a high-end brand of ETCR. All products are manufactured by ETCR, which also provides technical support and after-sales service. 

Product Features
1. 5-inch touch colorful screen, the test data is displayed on the same screen. It is very convenient to do the test operation and view history data.
2. Rated Output Voltage: 50V, 250V, 500V, 1kV, 2.5kV, 5kV, 10kV; Wide Measurement Range: 0.005MΩ ~ 10TΩ;  Max. Short Circuit Current: 5mA
3. Large output power, strong anti-interference ability. It has stable testing capabilities in scenario with large distributed capacitance (such as long cable) and in environment with strong electromagnetic interference (such as substation).
4. Complete Measurement Indicator: Insulation Resistance(IR), Polarization Index(PI), Dielectric Absorption Ratio(DAR), Step Test(STEP), Ramp Test(RAMP) and AC/DC Voltage(V).
5. Custom Measurement Mode: can choose PI and DAR calculation formulas to provide user with a variety of options.
6. Custom Setting Voltage Mode: the test voltage and test duration can be set freely, which is convenient for special site.
7. Voltage Monitor: Automatically monitor the voltage of the measured object. The voltage exceeds 36V will automatically prohibits the test to effectively protect the instrument and the operator.
8. Current Monitor: Automatic display the current of test circuit
9. Temperature Monitor: Automatic display the temperature and humidity of tester inside.
10. Automatic Discharge Function: automatically and quickly release the electric charge of the tested object after the test, no need an external discharge circuit.
11. Large capacity test record memory, the test record can be browsed and analyzed directly in the tester and automatically records 1000 groups real-time test data with test date and test time.
12. USB Communication: the record data can upload to computer store and analysis.
13. Bluetooth Cmmunication: can upload the test result to mobile.
14. Rechargeable lithium battery pack
 

1.Measurement Range & Accuracy

2. Technical specification