The power distribution cabinet (box) is divided into a power distribution cabinet (box), a lighting distribution cabinet (box), and a measurement cabinet (box), which are the final equipment of the power distribution system. The power distribution cabinet is the general name of the motor control center.
Answer-12: The capacity of a capacitor is numerically equal to the quantity of charge which must be given to the condenser in order to maintain the unit potential difference between the plates. Question-13. On what factors the capacity of a capacitor depends?
Place capacitors at loads which consume significant reactive power. For example, place capacitor in an industrial plant which have less than 85% power factor and bus voltage less than 95% nominal. Combination between rule of thumb (so called 2/3 rule) and running series of power flow simulations to fine-tune the capacitor size and location.
In most power applications, inductance prevails and reduces the amount of pay-load power produced by the utility company for a given size of generating equipment. The capacitor counteracts this loss of power and makes powerproduction more economical. Figure 2 – Pole-mounted capacitors. (a) Primary and (b) secondary
Since the system condition is dynamic: change with the season, time of the day, and other special condition, the capacitor should be sized according to power factor criteria and such that it would provide an acceptable voltage regulation during most, if not all, such conditions.
Basically, a capacitor serves the same purpose as a storage tank in a water system. By maintaining the water in a storage tank at a definite level, the pressure on the water supplied by the system connected to it is maintained evenly. It is the job of capacitors to keep the power factor as close to 1 as possible.