How to calculate electrical loss

The electric loss formula is calculated as follows:

Electrical loss = current squared x resistance x time, where current unit is ampere (a), resistance unit is ohm (ω) and time unit is second (s).

Brief introduction of electrical loss:

Electric loss refers to the electric energy loss caused by current doing other useless work. Power loss: Broadly speaking, in a circuit, the total work of electric energy is subtracted from the power loss that exceeds the rated power consumption of electrical equipment. It also refers to the power consumption generated by current doing other useless work.

The difference between the value of the total electric energy meter in the line and the sum of the measured values of each electric energy meter in the branch. The loss of transformer is divided into iron loss and copper loss: the copper loss of winding, P=I2Ri, is the effective value of current. The total copper loss of transformer is the algebraic sum of all windings. When the diameter of the conductor is less than twice the penetration depth, the skin effect can be directly calculated by DC resistance, otherwise AC resistance can be used.

Iron loss depends on the frequency and magnetic induction intensity, the working state of the circuit, materials, etc. For bipolar switch, P=Pb*Gb is the product of unit iron loss and mass, and unipolar switch is half of it. The fixed power loss of 300,000 KVA transformer is about 60-70 kW. If you want to calculate the degree of loss, you can multiply it by time (hour) h, and the result unit is KWH.

Introduction to physics:

Physics is a natural science, which mainly studies matter, energy, space and time, especially their respective properties and their relationships. Physics is knowledge about the laws of nature; More broadly, physics explores and analyzes what happens in nature to understand its laws.

Research objects of physics: physical phenomena, material structure, material interaction and law of material motion. The scale of physics research-the level and order of magnitude of the material world is divided according to the spatial scale: quantum mechanics, classical physics and cosmic physics. According to the size of the rate: relativistic physics, non-relativistic physics.

According to the size of the object: micro, meso, macro and cosmology. According to the movement speed: low speed, medium speed and high speed. According to research methods, it can be divided into experimental physics, theoretical physics and computational physics. Particle physics, nuclear physics, atomic and molecular physics, solid physics, condensed matter physics, laser physics, plasma physics, geophysics, biophysics, astrophysics, etc.