DM50C Insulation Resistance Tester

DM50CThe insulation resistance tester is designed and developed to evaluate the electrical insulation quality of large high-voltage transformers, motors, generators, long-distance power cables, tubular busbars, etc. under strong interference in high-voltage substations and power plants. It is particularly suitable forTest site with high capacitance and strong interference above 110kV.

● Design strictly in accordance with safety standardsOutput voltage: 500v 1000v, 2500v, 5000v.

● This instrument has an automatic calibration function, which automatically calibrates the accuracy before testing.

This instrument has the functions of measuring the actual live voltage of the test sample, measuring the leakage current, and automatic discharge. Through the actual live voltage measurement function of the test sample, it can be intuitively seen whether the drop voltage of the test instrument with load meets the national requirements.

● Can automatically measure and remember R_15S、R_60S、R_10minValue, automatically display polarization index（PI）,Induced absorption ratio（DAR）Test values and testing time.

● When the interference current reaches2mAAt the same time, the instrument still ensures testing accuracy and has strong anti-interference ability, especially for use in110KV and above large capacity transformers and long-distance power cables are used in power systems.

●Automatic discharge: For high-capacity test samples, manual discharge is required after automatic discharge.

The coexistence of analog pointers and digital displays, where the numbers reflect the accuracy of the insulation resistance of the test sample, and analog pointers can reflect the dynamic changes in insulation resistance during the testing process.

● Alarm function during boost, buzzer warning with high voltage output, keep away from the test site, and the warning sound will automatically stop after the test is completed.

● Digital display of battery level and under voltage alarm protection function (intelligent battery charging management).

● Automatic shutdown function: This instrument has an automatic shutdown function, which will automatically shut down 5 minutes after the measurement is completed.

Short circuit protection, stop testing for high leakage current in short circuit state.

3. Technical Specifications

● Safety specifications

IEC 61010-1 CAT. IV 600VPollution level2

IEC 61326 EMCSpecification: Electrical equipment for testing, control, and inspection

IEC60529 IP64(Outer box closed state)

The safety performance of this instrument complies with international standards IEC61010－1：2001。

This instrument follows the standard Q/WKD10。

●insulation resistance：50MW(Measure the distance between the circuit and the casing)

●Voltage resistance:AC10kV 50Hz 1min (Measure the distance between the circuit and the casing)

●Working temperature and humidity: －10℃ ～ +50℃85%RH

●Storage temperature and humidity: －15℃ ～ +55℃90%RH

● Charging power supply:220V±10%，50/60 HZ

● Battery powered:16VLithium ion rechargeable battery 2600mAH or measure while charging, without affecting the testing accuracy.

●size27 ×22 ×15cm

● Weight:3kg

● Test voltage accuracy: nominal value100%to110%

Voltage measurement accuracy: 5%+10V

● Short circuit current:7-10mA.

●Display mode: dual display of digital and analog pointers