Power Loss Calculator
Calculate electrical power loss using I²R and efficiency formulas. Simple tool with tables, examples, and FAQs for engineers and students.
calculate transformer losses
Wasted electrical energy in a system caused by conductor resistance or low efficiency is power loss. P loss = I 2 times the R of resistive losses or P loss = V times I times (1 -eta) of efficiency losses.
Formula & Table Summary:
- Resistive Loss: P_loss = I² × R
- Efficiency Loss: P_loss = V × I × (1 – η)
- Total Input Power: P_in = V × I
- Output Power: P_out = P_in × η
Converter Table (Input → Output):
| Input | Formula | Output |
|---|---|---|
| Current & Resistance | P_loss = I² × R | Power Loss (W) |
| Voltage, Current & Efficiency | P_loss = V × I × (1 – η) | Power Loss (W) |
| Input Power & Efficiency | P_loss = P_in – P_out | Power Loss (W) |
transmission line loss formula
The power loss calculator is used to estimate electrical energy that is lost in conductors, transformers, or equipment as a consequence of resistance and inefficiency. It is critical in ensuring the development of effective systems, minimizing unutilized energy, and lowering the cost of operation. The loss of power is typically computed by means of such formulas as: P loss = I² × R or P loss = V × I × (1-eta), where I is current, R is resistance, V is voltage, and epsilon is efficiency. This guide gives formulas, converter tables, sample calculations, keywords, and frequently asked questions to make the determination of power losses simple for engineers, electricians, and students.
system efficiency calculator
| Scenario | Input | Calculation | Result |
|---|---|---|---|
| Resistive Loss | I = 20 A, R = 0.5 Ω | P_loss = 20² × 0.5 | 200 W |
| Efficiency Loss | V = 230 V, I = 10 A, η = 0.9 | P_loss = 230 × 10 × (1 – 0.9) | 230 W |
| Transformer Loss | P_in = 1000 W, η = 0.95 | P_loss = 1000 – 950 | 50 W |
Frequently Asked Questions - Power Loss Calculator:
What is power loss?
Power loss is wasted electrical energy in a system due to conductor resistance or inefficiency.
How to calculate resistive power loss?
Use P_loss = I² × R, where I is current and R is resistance.
How to calculate power loss from efficiency?
P_loss = V × I × (1 – η), where η is efficiency.
What units are used for power loss?
Power loss is measured in watts (W).
Why is power loss important?
It reduces efficiency, increases costs, and can cause overheating.
How to reduce power loss?
Use conductors with lower resistance and improve equipment efficiency.
What is copper loss?
Copper loss refers to I²R losses in transformer windings or conductors.
What is iron loss?
Iron loss occurs in transformer cores due to hysteresis and eddy currents.
Is power loss same as power factor loss?
No, power factor loss relates to reactive power, while power loss is real energy wasted.
Can software calculate power loss?
Yes, online calculators and simulation software estimate power loss in electrical systems.
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