## How to calculate Generator Sizing?

Calculation for Generator sizing Procedure The generator sizing is done based on the following conditions. a) Load Calculate from continuous. b) 10 % spare capacity for future loads. A) Calculation of total load: Total connected load as per load summary given below. (Refer to generator sizing-load-summary details ) Continuous Load Total KW  237.22 Total KVAR  0.00 Total KVA 279.08 Minimum KW =237.22 KW Maximum KVA =279.08 B) Calculation for Generator Capacity  Generator Capacity (In KVA) =Maximum Load X 1.1 = 306.99 KVA (Considering 10% spare capacity for future loads) So we select…

## How to select a transformer sizing or rating for commercial and industrial ?

Calculate Transformer sizing and Voltage drop  with regulation at starting of large size motor Procedure:- The transformer sizing is done base on the following condition. a) peak load calculated from continuous ,intermittent & standby. b) 10% spare capacity for future loads. c) Load requirement with highest rated Motor started on DOL. 1:-Calculation of total peak load Total connected load as per transformer-sizing-load-summary given below Continuous load (E) Intermittent load (F) Stand by load (G) Total KW 222.74 Total kVR 138.04 Total KVA 262.05 Total KW 1871.61 Total KVAR 1159.92 Total…

## How to calculate electrical fault or Short circuit current?

Short circuit current calculation.  Purpose It plays a very important role to protect & also safety of commercial and industrial electrical equipment like circuit breakers,transformers …etc. What is short circuit current? When two or more conductors are different phases come in contact with each other in a line, transformer or any other power element, then the part of the impedance is shunted out of the circuit due to which a large current flow in the un-faulted phases, such current is called the short circuit current. It reduces the effect of impedance in…