KEY COMPONENTS FOR POWER FACTOR CORRECTION FACTORY MATCHED TO OPERATE IN PERFECT HARMONY

Check our special catalogue for power factor correction in medium voltage mains: www.electronicon.com MEDIUM VOLTAGE CAPACITORS AND REACTORS

AND OTHER KEY COMPONENTS FOR POWER FACTOR CORRECTION IN 50 Hz MAINS E L E C T R O N I C O N K O N D E N S AT O R E N G M B H G E R A · G E R M A N Y

Basics of Power Factor Correction - Calculation of Required Capacitor Power and Common Methods - Influence of Harmonics, Harmonic Filtering - Capacitors in High Frequency Filters OUR RANGE OF FACTORY MATCHED KEY COMPONENTS 11 Dielectric - Impregnants - MKPg 275 Self-Healing Dielectric - Protection Against Accidental Contact - Protection Against Overload CAPAGRIP™ - MKP(D] DEFINITIONS AND SELECTION CRITERIA 21 Voltage Ratings - Test Voltages - Rated Power - Current Ratings - Temperature Categories - Lifetime Statements GENERAL TECHNICAL DATA 23 DATA CHARTS MKPg 275 3PH GAS-FILLED DATA CHARTS MKP...

MOUNTING AND OPERATING INSTRUCTIONS 32 Mounting Position - Mounting Location/Cooling - Vibration Stress - Connection - Selection of Cables - Termination Torques - Discharge - Earthing - Environment - Disposal SWITCHING AND DISCHARGING CAPACITORS 36 DISCHARGE DEVICES &ACCESSORY PARTS 45 DISCHARGE REACTOR EL-Dr 49 DEFINITIONS AND SELECTION CRITERIA 55 Rated Inductance - Rated Voltage - Capacitor Voltage - Detuning Factor - Series Resonance Frequency - Rated Reactor Power - Dissipation Power - Rated Current - RMS Current - Maximum Current Rating - Ambient Operating Conditions - Insulation Class...

BASICS OF POWER FACTOR CORRECTION Under normal operating conditions certain electrical loads (e.g. induction motors, welding equipment, arc furnaces and fluorescent lighting) draw not only active power from the supply, but also inductive reactive power (kvar). This reactive power is necessary for the equipment to operate correctly but could be interpreted as an undesirable burden on the supply. The power factor of a load is defined as the ratio of active power to apparent power, i.e. kW : kVA and is referred to as cosφ. The closer cosφ is to unity, the less reactive power is drawn from the supply....

A. Calculation based on the consumption data - consumption of active energy: - consumption of reactive energy: - number of working hours: 1) Calculation of average active power P 2) Calculation of initial power factor cosφ1 3) From chart 1, we read the factor 1.13 for the improvement of the power factor from 0.6 to 0.98. 4) Calculation of required capacitor power QC = 500 kW · 1.13 = 565 kvar B. Calculation based on the Energy Bill - reactive power tariff: T/kvarh - monthly costs for reactive energy: C - number of working hours: h C Calculation of required capacitor power for cosφ = 1

COMMON METHODS OF POWER FACTOR CORRECTION SINGLE OR FIXED PFC, compensating for the reactive power of individual inductive loads at the point of connection so reducing the load in the connecting cables (typical for single, permanently operated loads with a constant power), constant power demand and long duty cycle GROUP PFC - connecting one fixed capacitor to a group of simultaneously operated inductive loads (e.g. group of motors, discharge lamps), variable power demand and/or variable duty cycle BULK PFC, typical for large electrical systems with fluctuating load where it is common to connect...

WHEN IS IT NECESSARY TO INSTALL A DETUNED PFC SYSTEM? The installation of detuned (reactor-connected) capacitors is designed to force the resonant frequency of the network below the frequency of the lowest harmonic present, thereby ensuring no resonant circuit and, by implication, no amplification of harmonic currents. Such an installation also has a partial filtering effect, reducing the level of voltage distortion on the supply, and is recommended for all cases where the share of harmonic-generating loads (“non-linear loads”) is more than 10% of the rated transformer power. The resonance frequency...

DOES THE MV MAINS CONTAIN AUDIO FREQUENCY CONTROL SIGNALS? Some energy supply companies use higher-frequency signals in their medium voltage mains for the transmission of control pulses and data. These so-called “audio frequency signals” ranging typically from 160 to 1350 Hz may become absorbed or distorted by, or cause resonance problems with capacitor installations. Such problems may be prevented by the selection of proper detuning reactors. Capacitor/PFC system reactive power audio frequency no specific activity consult your power supply company and conduct mains analysis no specific activity...

OPERATION OF CAPACITORS IN HIGH-FREQUENCY-FILTERS OR WITH A VERY HIGH SHARE OF LF OR HF HARMONICS Capacitors which are operated in filters or other systems with a very high share of harmonic distortion, or with harmonics of high frequencies, must be especially selected and prepared for the specific requirements of such applications. We offer special single and three phase capacitors that are optimized for the operation under such circumstances in our following ranges: - 280 MKP-UHD: three phase Ultra Heavy Duty capacitors for demanding operating conditions in power factor correction (such as...

FACTORY MATCHED TO WORK IN PERFECT HARMONY. ALL KEY COMPONENTS FROM ONE SOURCE. The construction of reliable equipment for power factor correction requires not only your excellent experience, but also top-ciass components. No compromise in quality and safety should be permitted when it comes to the key parts of your PFC equipment. Be- cause we do care, we are offering you the full set of essential components for your capacitor bank. Capacitors. Without them, PFC is impossible. They are the most sensitive and most important component. Switching is one of the key functions in your PFC, and switching...

POWER CAPACITORS Apart from your excellent experience, the construction of reliable and competitive equipment for power factor correction requires top-class components at reasonable cost. No compromise in quality and safety should be permitted when it comes to the key part of your PFC equipment. Germany’s largest manufacturer of power capacitors manufactures all components with highest care and expertise and is your best choice for power capacitors. The dry-type phase shifters of our renowned MKPg™-series are environmentally friendly, compact, and very convenient to handle. They contain no liquids,...