Solar cell plants produce direct current. The electric grid and all connected appliances use alternating current, thanks to a Westinghouse engineer genius named Steinmetz. There are 2 components of alternating current, active (watts) and reactive (vars). Purely resistive loads like filament light bulbs and resistance heaters do not need or produce reactive power. The voltage […]
Primary function of a VFD in aquatic applications is to provide energy savings. By controlling speed of a pump rather than controlling flow through use of throttling valves, energy savings can be substantial. By way of example, a speed reduction of 20% can yield energy savings of 50%. The term “variable frequency drive” is somewhat […]
Inductor: Inductors are storage elements which store energy in the form of magnetic fields. The current flowing through the inductor is the reason for the establishment of the magnetic field. Lenz’s law states that the effect tends to oppose the cause. Try to follow my reasoning here. A voltage was applied across the inductor. This […]
Actually not. The meters read real power for the bill. The capacitors are used to bring the current and voltage back in phase so the meter will read more real power. Other wise power with the voltage and current out of phase can have power go unread at the meter which can be brought back […]
Electric motors , wear out due to the long usage. Wear and tear takes place for the bearings and its housing. Needs replacement of the new bearings, and sometimes housings where bearings sits need to fill up the material and get it grounded /machining. This problem can be analysed by seeing the performance of the […]
At PCE Instruments you will find a power quality analyser to measure the power in W, kWh or to analyze and measure harmonics. This power analyzer is a multi-function power analyser device that measure precisely direct current, alternating current, AC-voltage, DC-voltage the intensity of DC or AC, phase rotation and idle, apparent and effective power. […]
When a power source (eg. a battery, a generator etc.) is used to provide electrical power to a load, the system (power source, wiring, switches etc) are designed to carry a certain amount of power, which is dependent on the current in the circuit. (The “load” can be a lamp, motor, TV set, oven etc.) […]
The Efficiency of an induction motor defined as the ratio between output power and input power. Induction motor is electrical energy to mechanical energy converter so the input power is nothing but electrical power which is the product of voltage and current but output power is mechanical power which is the product of torque and shaft speed. The output power […]
Imagine that you start with no charge in the capacitor in question and then connect it to some kind of source. For the purpose of argument, lets suggest that it is a battery and the current is flowing through a resistor. At the instant the battery is connected, the capacitor has no charge on it […]
Compressed air systems are a major utility area in the process industry and consume up to 20-30% of energy in the plant. In the current Situation, the compressed air cost is around Rs 1-3 CFM which is pricey. 80% of Industries use screw compressors. Screw compressors due to their unloading consumption patterns cause a loss of […]
