-
Dec 05,2019
What's the Definition of Power Factor? Power Factor Definition: Power factor(PF for short) is the ratio between KW and KVA drawn by an electrical load where the KW is the actual load power and the KVA is the apparent load power. It is a measure of how effectively the current is being converted into useful work output and more particularly is a good indicator of the effect of the load current on th...
read more
-
Dec 05,2019
Typical non-linear loads We will be focusing on the six pulse rectifier bridge. The 3 phase rectifier has a key role to play because a significant portion of the electrical energy is drawn from loads with this type of front-end circuit. One typical application that can be mentioned is the variable speed motor drive, which has been used for years with high growth rates in almost every industrial se...
read more
-
Nov 29,2019
Industry background Chemical industry involves many mechanical processes with demanding quality requirements. Before any mechanical smelting, casting, or stamping, an induction melting furnace is used to melt metal. Most induction melting furnaces use a 6-pulse or 12-pulse rectifier, which produces high volumes of harmonic and reactive power. As a result, the production efficiency of induction mel...
read more
-
Nov 28,2019
Standard Features Enclosure ZDDQ Capacitor banks,free standing, compartmentalized, all welded, galvanneal steel construction with 3 point pad-lockable latching handles and stainless steel hinges. The enclosure is painted with a corrosion resistant ANSI gray-61 epoxy paint. NEMA 3R construction is standard; NEMA 12 and 4X are available as an option. Base of enclosure as well as capacitor supports a...
read more
-
Nov 25,2019
Manufacture of power quality solutions,ZDDQ ensuring stronger, smarter and greener grids Power quality is a major concern for transmission and distribution utilities, industries, and transport and infrastructure sectors. Poor power quality affects grid reliability, productivity, leads to higher operating costs and penalties for non-compliance with grid codes. ZDDQ is a technology leader with a wid...
read more
-
Nov 22,2019
STATCOM/SVG INTRODUCTION Static Synchronous Compensator STATCOM (SVG) is one of the core equipment FACTS (Flexible Alternative Current Transmission Systems).The system can quickly compensate reactive, and take effective governance for harmonics, voltage fluctuations and flicker and other power quality problems, improve the safety and reliability of the system. With the limits of the IGBT can withs...
read more
-
Nov 23,2019
Rated insulation level The combination of voltage values that characterizes the insulation of the equipment with regard to its capability to withstand dielectric stresses. These values are selected based on the rated voltage of the bank/system. Standard insulation values are given for altitudes <1000 m above sea level. For higher altitudes, a correction factor must be used. Lightning impulse te...
read more
-
Nov 22,2019
In an L.V/M.V/H.V electrical installation, capacitor banks (or Static var generator/Active harmonic filter)can be installed at 3 different levels. 1.Global installation Advantages: - No reactive energy bill. - Represents the most economical solution since all the power is concentrated at one point and the expansion coefficient makes it possible to optimize banks - Relieves the transformer. Remark:...
read more
-
Nov 21,2019
ZDDQ power quality correction products are part of the solution. Most utilities charge for peak electrical demand on each month’s electrical bill. The demand charge is to allow the utilities to recoup part of their capital investment in the distribution network they operate. Each customer pays a demand charge for its peak operating load. Often inherent in the structure of these demand charges is a...
read more