This instrument is a specialized device used in power stations, substations, and other field or laboratory settings to test the electrical performance of zinc oxide arresters. It can accurately and stably measure parameters such as resistive current of the arrester and the operation of monitor counters while the equipment is in operation, and it can also calibrate the monitor's ammeter. The instrument is compact, lightweight, and fully functional, making it an ideal characteristic measurement device for zinc oxide arresters.
The instrument can measure both wired and wirelessly, with a wireless transmission distance of over 1000 meters, greatly facilitating various on-site measurement tasks in large substations. The entire device is simple to operate and easy to use, with the entire measurement process intelligently controlled by a central processing unit. An 8-inch large full-touch color LCD screen clearly displays the true waveforms of voltage and current. The instrument employs digital waveform analysis technology, using harmonic analysis and digital filtering software anti-interference methods to make measurement results more accurate and stable. It can accurately analyze the content of the fundamental wave and the 3rd to 7th harmonics, and can overcome the influence of inter-phase interference to correctly measure the resistive current of the arrester, thereby helping staff promptly detect dangerous defects such as internal moisture and valve plate aging in zinc oxide arresters.
Product Features
- Consistent data between wired and wireless measurements
· The data measured by the instrument via wired and wireless methods are completely consistent, so users need not worry about measurement errors caused by using the wireless method.
- Wireless sampling, long distance, easy operation
· Wireless mode: suitable for outdoor sites or situations where the PT sampling wiring cabinet is far from the arrester under test. The wireless transmission distance exceeds 1000 meters, fully meeting the needs of various experimental sites.
· Wired mode: suitable for indoor sites or situations where the PT sampling wiring cabinet is close to the arrester under test.
- Simultaneous three-phase measurement with automatic correction
· The instrument has three channels for simultaneous resistive current measurement and provides two anti-interference modes: ① No interference: In this mode, the instrument does not automatically correct the inter-phase interference angle during measurement; ② With interference: In this mode, the instrument automatically calculates and corrects the inter-phase interference angle during measurement. Only one wiring connection is needed to complete the measurement of phases A, B, and C simultaneously.
