Constant Using Load Current (Single Phase Two Wire Mid-Point OS) Calculator

Formula Used:

\[ K = \frac{8 \times I^2 \times \cos(\Phi)^2 \times \rho \times L^2}{P_{loss}} \]

Current Overhead AC (I):

Phase Difference (Φ):

rad

Resistivity (ρ):

Ω·m

Length of Overhead AC Wire (L):

Line Losses (P_loss):

Constant Overhead AC (K):

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1. What is Constant Using Load Current?

Constant Overhead AC is defined as the constant of line of a Overhead supply system. It represents a calculated value used in electrical engineering to characterize overhead AC transmission lines.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ K = \frac{8 \times I^2 \times \cos(\Phi)^2 \times \rho \times L^2}{P_{loss}} \]

Where:

\( K \) — Constant Overhead AC
\( I \) — Current Overhead AC (Ampere)
\( \Phi \) — Phase Difference (Radian)
\( \rho \) — Resistivity (Ohm Meter)
\( L \) — Length of Overhead AC Wire (Meter)
\( P_{loss} \) — Line Losses (Watt)

Explanation: This formula calculates the constant value based on current, phase difference, resistivity, wire length, and power losses in the system.

3. Importance of Constant Calculation

Details: Accurate calculation of the constant is crucial for designing efficient overhead AC transmission systems, optimizing power delivery, and minimizing energy losses in electrical distribution networks.

4. Using the Calculator

Tips: Enter current in amperes, phase difference in radians, resistivity in ohm-meters, length in meters, and line losses in watts. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the constant K?
A: The constant K helps characterize the efficiency and performance of overhead AC transmission lines under specific operating conditions.

Q2: How does phase difference affect the constant?
A: Phase difference directly influences the power factor (cosΦ), which significantly impacts the constant calculation and overall system efficiency.

Q3: Why is resistivity important in this calculation?
A: Resistivity determines how strongly the wire material opposes current flow, affecting both power losses and the resulting constant value.

Q4: How do line losses relate to the constant?
A: Line losses represent the power dissipated as heat in the transmission system, and higher losses typically result in a different constant value for the same input parameters.

Q5: What are typical values for this constant?
A: The constant value varies significantly based on system parameters, but it provides a normalized measure for comparing different overhead AC transmission configurations.