Many people have heard the concept of harmonic, but they don't know what it is. Normal commercial power is a smooth and regular sine 

wave, but after a large number of inverters, switching power supplies, motor frequency converters and industrial control cabinets are used 

in the factory, the current waveform will be changed, resulting in chaotic high-frequency clutter, which is harmonics. Simply put, harmonic 

is the "impurity current" in the power grid, which can't do external work, but will constantly interfere with circuits, consume equipment and 

waste electric energy. Among them, the types of electrical equipment in automation workshop, energy storage and distribution workshop 

and electromechanical processing plant are complex, and the harmonic problem is often the most serious.

Don't underestimate these invisible clutter, it will bring real multiple losses to the factory. First of all, the extra increase of electricity charges. 

Harmonics are useless power consumption, which will increase the reactive power loss of the factory and lower the overall power factor. 

Once the standard of the power supply department is not met, a fine will be imposed directly, which will cause the monthly electricity 

charges to rise inexplicably. The second is to accelerate the aging of power supply equipment. Harmonics will continue to impact the 

capacitors and power modules in inverters, DC converters, switching power supplies and UPS, leaving the equipment in an extra loss state 

for a long time, greatly increasing the failure rate and the replacement frequency.

In addition, harmonics will also interfere with the stable operation of production, disrupt the normal work of precision industrial control 

instruments and sensing equipment, lead to data confusion, equipment misoperation, distribution box tripping for no reason, frequently 

interrupt the production rhythm, and delay the construction schedule. In the long run, it will bury hidden dangers of line safety. Harmonics 

will increase the operating load of cables, make the lines abnormally hot, accelerate the aging of insulation layers, easily lead to short circuit 

and fire problems, and enhance the safety risk of power consumption in the factory.

Although the harm of harmonics is hidden, it is not complicated to deal with. There is no need to transform the distribution room on a large 

scale. Small and medium-sized factories can greatly reduce the impact of harmonics by implementing two measures. In the selection stage, 

the compliant power supply is preferred. When purchasing inverters, industrial switching power supplies and DC converters, the models with 

source harmonic suppression and high power factor are preferred. The power supply head is used to reduce harmonic generation, and the 

low-priced non-standard power supply is rejected as much as possible to avoid leaving hidden dangers for subsequent operation and main-

tenance.

At the same time, the shunt adaptation of high-power equipment should be done well. In the workshop, high-power variable frequency motors 

and energy storage inverters should be distributed in separate circuits as far as possible, and filter accessories should be matched as needed to 

avoid multi-channel equipment sharing the same circuit, so as to prevent harmonics from overlapping and amplifying the pollution impact.

Power grid harmonics are typical hidden dangers of power consumption, which are invisible and intangible, but the losses are real. It is the most 

economical and worry-free way to do prevention and control from the source in advance than to repair and replace the equipment after the fault 

occurs and pay the electricity fine. The core of the stability of power consumption in the factory lies in choosing the right power supply equipment 

that is compliant and anti-jamming, and making scientific circuit distribution planning.

If you need type selection and transformation, you can consult Baoweite for the scheme. Thank you for browsing. You can collect official website 

of Shenzhen Baoweite Power Supply Co., Ltd.