ENGINEERING CALCULATORS
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Engineering calculators (Beta)
Find compensation reactive power and ideal capacitance from active power and before/after power factor.
Click the grid to add ordered vertices. Edit coordinates in mm; separate holes with a blank line. The last vertex closes to the first automatically.
Choose units and enter numbers. Full-width digits and fractions such as 1/8 or 1 3/8 are accepted. Changing a unit converts the entered value.
Reference calculation only. Results do not certify suitability for an actual design or its safety.
Inputs: select a blue symbol to edit Results: red-orange values and lines
3D shows an illustrative extrusion. Its display length does not enter the section calculations. Edit dimensions in 2D.
Qc=P(tanφ1−tanφ2); CY=Qc/(2πfU²); CΔ=CY/3; I=P/(√3 U cosφ).
Displayed values are rounded. Diagrams illustrate the calculation conditions. Initial material and fluid properties are examples; replace them with values for the actual material, temperature and conditions.
ReferenceEquations assume particular loads, supports and deformation ranges. Check inputs, units and the applicability of each equation. Diagrams explain conditions; they are not manufacturing drawings or proof of safety.
Material values are typical values or reference ranges, not certified product properties or ready-to-use design allowables. They vary with standards, product form, dimensions, temper and temperature. Check the specifications and inspection certificates for the actual product.
Displayed safety factors and checks apply only to the supplied inputs and calculation model. They do not automatically establish the safety of a complete design, including code compliance, service life, fatigue or joints. For actual design, manufacture and use, separately verify applicable regulations and standards, product specifications, and the necessary tests and engineering review.
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有効電力と改善前後の力率から、必要な無効電力と理想容量を求めます。
選択した形状・計算方法により、使う項目は変わります。実際の計算は上の図と入力欄で行えます。
Qc=P(tanφ1−tanφ2); CY=Qc/(2πfU²); CΔ=CY/3; I=P/(√3 U cosφ).
平衡三相・正弦波・一定電圧、遅れ力率を改善する理想計算です。高調波、共振、過補償、無負荷自己励磁、投入電流、開閉器・保護装置・放電抵抗・接続方法の適否は扱いません。容量は比較用で、実機への接続指示ではありません。
現在選択中の方法には、操作欄の「計算式・適用条件」を使ってください。参考計算であり、設計全体の安全性を保証するものではありません。
Find compensation reactive power and ideal capacitance from active power and before/after power factor.
The selected model determines which of these inputs and outputs apply. Use the working diagram and input panel above to calculate.
Qc=P(tanφ1−tanφ2); CY=Qc/(2πfU²); CΔ=CY/3; I=P/(√3 U cosφ).
Balanced sinusoidal three-phase supply at constant voltage, improving lagging PF. Harmonics, resonance, overcompensation, no-load self-excitation, switching transients, protection, discharge resistors and installation suitability are excluded. Capacitance is for comparison, not wiring instructions.
The displayed formula and conditions in the working panel apply to the currently selected model. Reference calculation only; it does not certify a complete design.
