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Whenever we choose to buy a product or purchase a product, we will be more or less confused, and we will have our own standards. The same is true when we choose to buy instruments in the power industry. When we choose the products we need, we will also face There are many problems, and I don’t know how to choose. Just like the power quality analyzer, the first thing that comes to mind may be which power quality analyzer is good, where it can be sold, or the function, technology, manufacturer, etc. The editor does not make recommendations here, just as an analysis of the factors that we need to consider when choosing a good power quality analyzer based on the experience accumulated by a senior salesman in the industry.
In fact, the important factor in choosing which power quality analyzer to buy is to consider its functions and characteristics.
1.1 Safe and reliable
The voltage input of the power quality analyzer uses a high-voltage isolation module (2000V, response time <2μS), and the current input uses an alternating current clamp (0-50KHz, 0-5Arms) to safely isolate the input signal from the measurement system. This not only makes ZKD35D safe, reliable and convenient to use, but also greatly improves the anti-interference ability of ZKD35D.
1.2 Easy to use
The portable structure of this power quality analyzer produced by our company is small in size, light in weight, and easy to carry for on-site testing; built-in high-performance lithium battery, long working time, and high measurement accuracy under charging.
1.3 High accuracy
The data acquisition channel adopts a single channel single A/D design, each channel has an exclusive 16-bit parallel A/D, all channels are fully sampled simultaneously, with higher accuracy and faster speed, and any A/D damage will not affect the others Normal acquisition of channel data.
1.5 Communication interface
The tester provides a USB interface, which is convenient for data storage and communication with the computer for data transmission.
1.6 Many test parameters
1) Basic measurement
Grid frequency; effective value of voltage and current; total active and reactive power and power factor.
2) Basic monitoring indicators
a) Three-phase fundamental wave voltage, effective value of current, fundamental wave power, power factor, phase, etc.;
b) Voltage deviation;
c) Frequency deviation;
d) Three-phase voltage unbalance, three-phase current unbalance, negative sequence voltage and current;
3) Advanced monitoring indicators
a) Voltage fluctuation and flicker;
1.7 Mass storage
The harmonic tester has a built-in 32MB memory, and users can configure different saving time steps, and the time can be selected by themselves.
To sum up, when we choose a good power quality analyzer, we need to consider the above characteristics and functions of the power quality analyzer. Secondly, considering the manufacturer or price, it is much easier to buy a power quality analyzer. More than three, you can consult more manufacturers or middlemen to find the right power quality analyzer based on your needs.
