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Mar 04,2021
ZDDQ Active Harmonic Filter Active Harmonic Filter is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave, reactive power, and three-phase load unbalance. ZD-AHF-4 active harmonic filter is connected in parallel in 380V~456V power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compensation current through the co...
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Mar 11,2021
Basic Datas of Harmonics and VFD Harmonic Distortion Harmonic Distortin is a measure of the amount of deviation from a pure sinusoidal wave form that can be caused by a non-linear load (a VFD is considered a non-linear load because it only draws current from the power line as required). Distorted Waveform Distorted Waveform = fundamental (50Hz sinusoidal waveform) + multiples of the fundamental fr...
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Mar 19,2021
Problems of Line Side Harmonics The two main line side harmonic concerns are the problems caused in the facility where they are being generated and the degree of harmonic infection passed to neighboring facilities. The degree of impact for either area depends on the number, size and frequency of use of all linear and non-linear loads . Mainly introduce harmoncs within a facility here. Within a fac...
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Mar 20,2021
A capacitor bank is a grouping of several identical capacitors interconnected in parallel or in series with one another. These groups of capacitors are typically used to correct or counteract undesirable characteristics, such as power factor lag or phase shifts inherent in alternating current (AC) electrical power supplies. FEATURES: Power factor correction by multi step design Standard & detu...
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Mar 30,2021
Why harmonics analysis? When a voltage and/or current waveform is distorted, it causes abnormal operating conditions in a power system such as: Voltage Harmonics can cause additional heating in induction and synchronous motors and generators. Voltage Harmonics with high peak values can weaken insulation in cables, windings, and capacitors. Voltage Harmonics can cause malfunction of different elect...
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May 05,2021
A SECONDARY SOURCE Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, elect...
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May 18,2021
Harmonics and Active Power Filter In recent years, the use of non-linear load is increasing day by day. Non-linear loads such as traditional diode/ thyristor rectifiers with inductive load generate harmonic and reactive current, which leads to poor power factor, low energy efficiency, and harmful disturbance to other appliances. Also, in recent years, the large-scale use of the power electronic eq...
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May 31,2021
Power Qaulity Issue Power quality issues can increase your utility and operating costs. In a 3-phase power system, any disturbance on one parameter (magnitude, frequency, waveform, or symmetry) is classified as a power quality problem. Even minor disruptive voltage fluctuations can cause major issues from equipment malfunctions, to flickering lights, to complete power shutdowns. Power quality prob...
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Jun 07,2021
Energy consumption pattern The energy pattern given in below table is helpful in understanding the way energy is used in a foundry and helps to control energy cost by identifying areas where waste can occur and where scope for improvement may be possible. It is observed that melting consumes a major portion of total energy consumed. SN Sections Energy Consumption 1 Melting(Furnance) 70% 2 Molding ...
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Jul 22,2021
An example of how to calculate the capacity of reactive power (kVAr)? An Motor is supplying a load of 700 kW at a P.F (Power factor) of 0.65. What size of Capacitor in kVAr is required to raise the P.F (Power Factor) to unity (1)? And how many more kW can the motor supply for the same kVA loading when P.F improved. Supplying kW = 700 kW Original P.F = Cosθ1 = 0.65 Final P.F = Cosθ2 = 1 θ1 = C...
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Sep 07,2021
Formulas of Related Harmonics The following calculator computes the total harmonic current distortion (THDc or THDi), Peak Current, RMS Current, and Crest Factor based on individual harmonic current distortion values between the 1st and the 50th harmonic. Input the fundamental current and individual harmonic currents to compute THDc(THDi) also to view a waveform plot based on the input values. The...
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Oct 28,2021
ZDDQ-AHF Active Harmonic Filter ZDDQ Active Harmonic Filter(AHF) is used to improve Power Quality through autonomous detection and dynamic filtering of harmonic currents present in power grid. ZDDQ Active Harmonics Filter is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave, reactive power, and three-phase load unbalance. ZD AHF is connected in parall...
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Nov 05,2021
ZDDQ Active Harmonic Filter(APF/AHF for short) is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave(can filter 2nd to 50th harmonic interference completely), reactive power, and 3 phase load unbalance. Active Harmonic Filter is connected in parallel in power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compe...
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Nov 22,2021
Reliable power distribution is needed to guarantee patient health and save lives in hospital. Continuity and reliability of power supply are extremely important in hospital.UPS,Generator,Medical devices include high volume of harmonics current, and can impact the distribution system in hospital. ZDDQ Active Harmonics Filter Based on the broad knowledge and experience in terms of solutions and appl...
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Dec 04,2021
ZDDQ Active Harmonic Filter Active harmonic filter is connected in parallel with non-linear loads, and uses one set of CT to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmo...
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Dec 25,2021
Merry Christmas to all our friends.
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Jan 20,2022
Static Synchronous compensator (STATCOM) is a fast-acting device capable of providing or absorbing reactive current and thereby regulating the voltage at the point of connection to a power grid. It is categorised under Flexible AC transmission system (FACTS) devices. The technology is based on VSCs with semi-conductor valves in a modular two-level configuration. ZDDQ Statcom have installed in many...
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Feb 18,2022
Thanks for Pakistan Client's trust and support. 300A Active Harmonic Filter Panels.
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