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Product Overview

With the progress of science and technology, improvement in the industrial production level and people's living standards, non-linear devices are widely adopted and put into operation in our daily life and production, which cause increasingly severe harmonic pollution in electricity grid. These harmonics are ubiquitous in the power grid and have relatively great impact on the equipment we daily use.
In industrial applications, the large quantity of 2nd~50th order harmonics affect almost all industrial devices (such as driving, precise machine tools, central air conditioning, industrial water pumps, and electric welding to the motor and servo equipment). Harmonics cause the industrial equipment mis-operation or refused operation, and even motor jittering, directly resulting in inability to produce or failure to meet the production requirements. Meanwhile, the harmonic will aggravate the heat loss and magnetic loss of power grid, interfere with protection devices and automation devices of power grid and directly influence the safety of power grid.
The Dumarxing has studied and designed the international leading DMS-HMP series harmonic protector according to years of accumulated technology and marketing experiences in the field of power quality. The products are developed based on harmonic data under complex conditions, and able to adapt to all electrical applications, protect safe and efficient operation of user equipment, and serve as backing for cleaner energy of our customers.

Hazards of higher harmonics

◆ Cause the series and parallel resonances, amplify the harmonics, and result in hazardous over-voltage or over-current
◆ Generate harmonic losses and reduce the efficiency of the power equipment
◆ Accelerate the insulation and aging of electrical equipment, making it easy to breakdown, thereby shortening the life
◆ Interfere with communications systems, impair the transmission quality of signals, and undermine the correct transfer of signals.
◆ Cause crash of computer electronic equipment, PLC and other chips, dramatically shortening the life.
◆ Cause mis-operation or refusal operation of protection device

Necessity of Harmonic Control

◆ Reduce the skin effect of conductor, and avoid the temperature rise of the conductor
◆ Lower the copper loss and iron loss of transformer, reducing unnecessary energy consumption
◆ Improve the working environment of communications equipment, and prevent data network congestion, so that the bit error rate of communication line is greatly reduced, and network paralysis can be avoided.
◆ Ensure the life of the power factor compensation device
◆ Prevent malfunction of the protection device
◆ Ensure machining precision of the precise machining equipment

DMS-HMP1000/99 Series Harmonic Protector Function

◆ Manufactured with Germany's most advanced manufacturing technology, Nanocrystalline alloy material
◆ Take the initiative to absorb and control the harmonics of 1KHz ~ 20MHz in the power grid
◆ Suppress high-frequency noise, spikes, and inrush current in the grid
◆ Keep track of the voltage and current waveforms, and correct the distorted waveform.

DMS-HMP2000 Series Advanced Harmonic Protector Function

◆ Make dynamic real-time analysis on and filter out the system harmonics, purify system, and fast response ◆ Can simultaneously filter out many orders of harmonics, and also set specific order of harmonics in accordance with the setting
◆ Provide the current correction, and allow both capacitive or inductive outputs.
◆ Allow operation of more than one devices in parallel and provide different combinations of capacity.