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A static VAR compensator has no significant moving parts (other than internal switchgear). Prior to the invention of the SVC, power factor compensation was the preserve of large rotating machines such as synchronous condensers or switched capacitor banks.
A 440-volt capacitor can be used in place of a 370-volt, but not a 370-volt in place of a 440-volt. [2] The capacitance must remain within 5% of its original value. [2] Round cylinder-shaped dual run capacitors are commonly used for air conditioning, to help in the starting of the compressor and the condenser fan motor. [2]
Before a reorganization in 2017, Living Direct was an online retail company, specializing in consumer appliances, indoor air quality products, and lawn and garden furniture. It operated e-commerce websites including CompactAppliance.com, LivingDirect.com, PortableAirShop.com, Kegerator.com, SimplyDehumidifiers.com, HotWaterSource.com and ...
For air dielectric capacitors the breakdown field strength is of the order 2–5 MV/m (or kV/mm); for mica the breakdown is 100–300 MV/m; for oil, 15–25 MV/m; it can be much less when other materials are used for the dielectric. [37] The dielectric is used in very thin layers and so absolute breakdown voltage of capacitors is limited.
Miscellaneous capacitors: Air gap capacitors: Air: Low dielectric loss. Used for resonating HF circuits for high power HF welding. Physically large. Relatively low capacitance. Vacuum capacitors: Vacuum: Extremely low losses. Used for high voltage, high power RF applications, such as transmitters and induction heating. Self-healing if arc-over ...
Differential variable capacitors also have two independent stators, but unlike in the butterfly capacitor where capacities on both sides increase equally as the rotor is turned, in a differential variable capacitor one section's capacity will increase while the other section's decreases, keeping the sum of the two stator capacitances constant.
With air variable capacitors, the air moving around the plates may change the value slightly; often it is not much but in some applications it is enough to cause undesirable effects. [citation needed] Vacuum variable capacitors are generally more expensive than air variable capacitors. This is primarily due to their design and the materials used.
A power conditioner (also known as a line conditioner or power line conditioner) is a device intended to improve the quality of the power that is delivered to electrical load equipment. The term most often refers to a device that acts in one or more ways to deliver a voltage of the proper level and characteristics to enable load equipment to ...
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