It is not affected by noise as it only detects frequencies specific to discharge.
The Corona Discharge Checker MK-720 detects only the specific frequency of discharge, making it unaffected by noise. It can detect insulation deterioration in cables, cable terminals, transformers, and more. Due to ultrasonic discharge sound detection, it allows for non-contact measurement while the system is live. When corona discharge occurs due to insulation deterioration in AC power supply equipment, ultrasonic waves are generated across a wide frequency range. These ultrasonic waves vary in strength in sync with the power supply phase, so when the detected sound is demodulated and frequency analyzed, the component at twice the power supply frequency appears prominently. This device can detect discharge without being influenced by sounds other than discharge by detecting the strength of this twice power supply frequency component. For more details, please contact us.
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Product Code: 30022 *Please provide this number when making inquiries for a smoother process. 【Features】 ○ Non-contact measurement possible in live wire conditions due to ultrasonic discharge sound detection ○ Equipped with frequency analysis function → Detects only the specific frequencies of discharge, unaffected by noise ○ Can detect insulation deterioration of cables, cable terminals, transformers, etc. ○ Sharp capture with a directional sensitivity of ±8° → Easy to identify discharge locations with the laser pointer included ○ Measurement data (component ratios, waveforms, FFT data) can be recorded ○ Data transfer possible by connecting a USB cable ○ Discharge sounds can be heard through earphones, etc. ● For more details, please contact us.
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Rex Co., Ltd. is a leading company that rents measuring instruments such as measuring devices, surveying equipment, weighing instruments, and inspection equipment. ■ Measurement Instrument Rental Business Rex offers over 1,000 types and more than 20,000 units of measuring instruments. We have everything from the latest models to renowned instruments that are not available from manufacturers. Please let us know the issues you are facing; we are sure you will find a measuring instrument that will be helpful. ■ Measurement System and Information Technology Construction Business In addition to renting measuring instruments, we also provide a rental service for systems that utilize these instruments. We handle a wide range of measurements, from work environment measurements such as noise and vibration to structural measurements like three-dimensional and displacement measurements. Additionally, we can propose the development of original measurement systems and measurement outsourcing tailored to your needs. ■ Measurement Instrument Calibration and Inspection Service We perform calibration for the measuring instruments you own. Rex Co., Ltd. is certified by the Japan Surveying Instrument Manufacturers Association and manufacturers for maintenance. No manufacturer restrictions!