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PRODUCTS FOR POWER FACTOR CORRECTION
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PRODUCTS FOR POWER FACTOR CORRECTION - 1

PRODUCTS FOR POWER FACTOR CORRECTION The perfect solution to increase the energy efficiency in production processes Motors | Automation | Energy | Transmission & Distribution | Coatings

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PRODUCTS FOR POWER FACTOR CORRECTION - 3

Products for Power Factor CorrectionSummary Introduction Benefits Power Factor Power Factor Correction in Networks with Voltage Harmonics - DRW Capacitor Technology Safety Device Overview UCWT HD - Heavy Duty Three-phase Capacitors UCWT ND - Normal Duty Three-phase Capacitors UCW - Single-phase Capacitors MCW - Three-phase Capacitor Module BCW - Three-phase Capacitor Bank BCWP - Three-phase Capacitor Bank DRW - Detuning Reactors CWMC - Contactors for Switching Capacitors Accessories Selection Code PFW - Automatic Power Factor Controller

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PRODUCTS FOR POWER FACTOR CORRECTION - 4

It is estimated that around 10% of all electricity generated is wasted. Such percentage could be generating work and, consequently, making the system more efficient. The effectiveness of a productive process with improved efficiency provides greater energy availability and reduces environmental impacts. The power factor is an easy and fast way to improve the performance of an installation. The application of capacitors enables the use of all the electrical power delivered by the system to produce work, reducing losses and making the production process more efficient. 4 | Products for Power...

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Reduced energy bill Reduction in losses by the Joule effect Release of the full power line capacity Improvement in the mains voltage Products for Power Factor Correction

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Power Factor Basic Concepts In any industrial, commercial or residential installation, all machines and devices consume some type of energy to perform work, being power the quantity that determines the amount of energy provided by a source at each unit of time. In electrical systems, the energy supplied by a given source can be divided into: J ctive Power: power that effectively performs the work, A generating heat, light, motion, etc. It is measured in kW. J eactive Power: power used only to create and keep the R electromagnetic fields of the inductive loads. It is measured in kvar J...

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Consequences and Causes of a Installation Losses The electric energy losses occur as Power Factor Low Power Factor heat and are proportional to the square of the total current (I2.R). Since this current increases with the excess of reactive energy, a relationship is established between the losses and the low power factor, increasing the heating of conductors and equipment. Voltage Drop The current increase due to the excess of reactive power results in voltage drops, which may interrupt the power supply and produce overloads in some devices. Especially when the power line is highly...

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PRODUCTS FOR POWER FACTOR CORRECTION - 8

RESULT 420 kVA free to add new equipment V J Power Factor Consequences and Causes of a Low Power Factor The power-factor correction itself already releases capacity to install new equipment without requiring investments in transformers or replacement of conductors for this specific purpose, even improving the voltage levels, as shown in the following example: E.g.: If you want to correct the power factor to 0.92 for a load of 930 kW, 380 V and PF = 0.65: ■ Without Power Factor Correction: Initial apparent power = 3 = 1431 kVA Initial curnnt ys^o.es = 2,174 A ■ With Power Factor Correction:...

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PRODUCTS FOR POWER FACTOR CORRECTION - 9

Power Factor c) ocalized correction: it is obtained by installing the capacitors next to the machine whose power factor you want to correct. L This type of Power Factor correction represents, from the technical point of view, the best solution, providing the following advantages: g eduction in energy losses across the installation R g Reduction of the load on the machine supply circuits g t can be used in a single drive system for the load and capacitor, thus saving one low power switching device I g eneration of reactive power only where needed G d) ixed correction: From the “Energy...

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To correct the motor power factor, use the formula: Q (%load)xPxF camp = ^ Where: %ioad = Factor relative to the motor working power: %ioad = 0.50 means the motor operating at 50% load; %load = 0.75 means the motor operating at 75% load; %load = 1.00 means the motor operating at 100% load; P = Active Power in kW; F = Multiplication factor, according to the table below; n = Motor efficiency as a function of the percentage of load running; Qcapm = Reactive power of the capacitor required on the motor in kvar. Products for Power Factor Correction

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Power Factor Current power factor (FPa) = 0.85; Active power (P) = 55 kW; Desired Power Factor (FPd) = 0.92; Factor (see table above) (F) = 0.220; %load = 0.75 (75% of load); η = 93.2%; Qkvar = (%load x D x F)/η = (0.75 x 55 x 0.220)/0.932 = 9.73 kvar. Use: UCWT10 V44 N20 + CWMC18-10-30 Notes: The examples mentioned above are reference values. Whenever possible, you should know the types of load present and the load curve of the installation. If more than 20% of the loads to be corrected are non-linear (frequency inverters, soft-starters, rectifiers, electronic ballasts, etc.), they must be...

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Capacitor Technology WEG capacitors for power factor correction are manufactured in accordance with NBR IEC 60831-1/2, UL 810 standards and RoHS directive. They are developed with self-healing metallized polypropylene film and a safety interrupting device against inner pressure. The metallized polypropylene film has self-healing characteristic; therefore, the electrical properties are rapidly restored after a local perforation of the dielectric. As shown in the pictures below, at the moment the dielectric breaks, the metal layer around the perforation is vaporized and the short circuit is...

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Safety Device All WEG capacitors for power factor correction have an internal overpressure safety device. This device is connected inside the capacitive unit in series with the capacitive element, and it interrupts the electric current in the capacitor in case of abnormal increase in the internal pressure. The actuation of this device occurs at the end of the product service life or in case of fault. WEG capacitors for power factor correction are certified by UL - Underwriters Laboratories INC. with the highest short circuit current level, according to UL 810, guaranteeing the product...

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