Transformer is the most important electrical equipment in the power system. Once a fault occurs during operation, it will cause serious consequences to the power system. The core of a normally operating transformer is grounded at a single point. If two or more points are grounded at the same time, a current loop will be formed between the core and the earth. The maximum current can reach tens of amperes, which will cause local overheating or even burning of the core.
This instrument is suitable for leakage current testing of cores and clamps of electrical equipment such as transformers and reactors in substations and power plants. It can quickly and timely discover latent faults of transformers. It is the main tool to ensure the safe operation and normal maintenance of transformers. It can also be used for current, harmonics, and leakage current testing of lines or equipment in the fields of communications, meteorology, railways, oil fields, construction, measurement, scientific research and teaching units, industrial and mining enterprises, etc.
1) This instrument consists of a handheld host and a special current clamp.
2) It is suitable for measuring transformer core grounding current, harmonics, interharmonics, total harmonic rate, leakage current, frequency, waveform, etc. in substations and power plants.
3) It uses a 3.5-inch color LCD screen, which can display the size and waveform of the measured current in real time. It has a Chinese graphical interface and intuitive operation.
4) The special current clamp uses a special alloy and double-layer magnetic shielding technology, which has little influence from the external magnetic field and strong anti-interference ability, ensuring high precision, high stability and high reliability of uninterrupted measurement all year round.
5) Non-contact measurement, no need to disconnect the measured line, safe and fast.
6) The whole machine adopts 32-bit high-speed DSP and FFT transformation, digital filtering and other technologies, with strong anti-interference ability to ensure accurate and reliable data.
7) Built-in large-capacity lithium battery, can set automatic shutdown time and custom edit test product number, convenient for on-site use, and can work continuously for more than 8 hours under normal working conditions.
8) The test procedure is simple and efficient, the instrument automatically measures and displays waveforms.
9) The menu is simple and user-friendly, and the displayed data chart is clear and easy to read, and can be clearly displayed in sunlight.
10) The instrument has a perpetual calendar and data storage of up to 104 groups, and data will not be lost when it is turned off.
1. Working power supply: DC 7.4V large capacity rechargeable lithium battery; USB charging interface
2. Rated current: 150mA max
3. Measuring range: Current: 0-10A (AC); Frequency: 20Hz~400Hz
4. Frequency: 45~65Hz (for measuring 50Hz power frequency signals)
5. Accuracy:
Magnetic field interference B 5GS ±1%±3 digits
Magnetic field interference B 10GS ±1%±3 digits
Magnetic field interference B 15GS ±1%±3 digits
Magnetic field interference B 20GS ±2%±3 characters
6. Minimum resolution: 0.1mA
Harmonic ratio: 25th, with interharmonics, 0.0%~99.9%
7. Total harmonic rate (THD): 0.0%~99.9%
8. Sampling rate: 3 times/second
9. Jaw size: 80mm
10. Current effective value display: 0.5mA-300A
11. Internal data storage: 104 groups
12. Display: 3.5-inch color LCD screen, support capacitive touch screen
13. Working temperature: -10~50℃
14. Ambient humidity: ≤80%RH, no condensation
15. Storage conditions: -20℃~60℃, ≤95%RH, no condensation
16. Volume: 218mm long × 98mm wide × 48mm high
17. Net weight of the whole machine: ~650g (including battery)
We provide you with free consultation services
Engineers provide guidance for installation and commissioning
Technicians can provide on-site maintenance services and receive regular training
Perfect technical consulting service system
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Address: China Optics Valley No. 1, Fenghuangyuan 2nd Road, Donghu High-tech Development Zone, Wuhan City
whmoen@163.com
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15997412136
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400-017-7185
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