It is a special portable product for the inspection and analysis of power grid operation quality
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Power quality refers to the quality of AC electric energy supplied to the client through the public grid, which is generally referred to the good or bad situation of electric energy in the grid line. The power quality problem is mainly caused by the terminal load side. For example, the impact reactive load will cause the power grid voltage to fluctuate sharply, reducing the quality of power supply.
With the development of power electronics technology, it not only brings the positive side of energy saving and energy transformation to modern industry, but also the wide application of power electronic devices in all walks of life has brought new and more serious damage to power quality, and has become the main harmonic pollution source of power grid.
The rectifier, frequency conversion speed regulating device, electric arc furnace, electrified railway and various power electronic equipment used in the distribution network of each client in the power grid system are increasing. It can affect or pollute the electricity network. Cause voltage instability, overvoltage, harmonics and so on. Harmonics reduce the efficiency of the production, transmission and utilization of electric energy, overheat the electrical equipment, produce vibration and noise, and make the insulation aging, shorten the life, and even malfunction or burn. Harmonics can also cause local parallel resonance or series resonance in the power system, so that the harmonic content is amplified, causing capacitors and other equipment to burn.
The nonlinear, impact and unbalanced power characteristics of these loads cause serious pollution to the quality of power supply. Therefore, the elimination of high order harmonics in power supply and distribution system has a very positive significance for improving power quality and ensuring the safe, stable and economic operation of power system.
On the other hand, the electrical equipment of modern industrial, commercial and residential users is more sensitive to power quality and puts forward higher requirements for power supply quality. At present, harmonics, electromagnetic interference and power factor reduction have been listed as the three major public hazards of power system.
When the power quality of the power grid is interfered with or polluted, and cannot reach the relevant national standards, it is necessary to improve the power quality of the power grid in a targeted way. To understand the actual situation of power quality in the power grid, it is necessary to have the corresponding equipment to test and analyze it. In view of the actual situation in China, our company has developed a professional power quality analyzer suitable for the national conditions in time. The following is a detailed description of the specific performance, parameters and use methods of the power quality analyzer.
Product names： Three-phase power quality analyzer、 Portable three-phase power quality tester、 Portable three-phase power quality measuring instrument、 Power quality analyzer
| Input characteristic | Voltage measurement range: 20V ~ 800V, automatic shift | |
| Current measurement range: Clamp transformer (three kinds) : 5A/25A (standard); 100A/500A (optional); 400A/2000A (optional) | ||
| Phase Angle measurement range: 0 ~ 359.99° | ||
| Frequency measurement range: 45 ~ 55Hz | ||
| Number of voltage channels: three channels (UA, UB, UC) | ||
| Number of current channels: three channels (IA, IB, IC) | ||
| Maximum harmonic analysis times: 63 times | ||
| 1-minute interval Maximum continuous storage period: 18 months | ||
| accuracy | Electrical parameter measurement part | Voltage: ±0.1% |
| Frequency: ±0.01Hz | ||
| Current, power: ±0.5% | ||
| Phase: ±0.2° | ||
| Power quality component | Allowable error of fundamental voltage ≤ 0.5% F.S. | |
| Allowable error of fundamental current: ≤ 1% F.S. | ||
| Measurement error of phase difference between fundamental voltage and current: ≤0.2° | ||
| Measurement error of harmonic voltage content: ≤ 0.1% | ||
| Measurement error of harmonic current content: ≤ 0.2% | ||
| Three-phase voltage unbalance error: ≤ 0.2% | ||
| Voltage deviation error: ≤ 0.2% | ||
| Voltage variation error: ≤ 0.2% | ||
| Operating temperature | －10℃～ +40℃ | |
| Charging power source | AC220V, frequency: 45Hz ~ 55Hz | |
| Host power consumption | ≤3VA | |
| Maximum battery working time | ≤10 hours | |
| insulation | The insulation resistance of the input end of the voltage and current to the housing is less than or equal to 100MΩ | |
| The working power input side is subjected to a power frequency of 1.5kV (effective value) between the shell, which lasts for 1 minute | ||
| volume | 258mm × 158mm × 58mm | |
| weight | 1.5kg | |
1.The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice.In case of misappropriation or copying, legal liability will be investigated.
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Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.
email： info@hvtest.cc
WhatsApp： +8615871365102
