Power Factor Improvement for Welding Transformer

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Power Factor Improvement for Welding Transformer

ISI approved capacitors should be installed for power factor improvement. Non-installation of capacitors or delay in replacing faulty capacitor will result in higher LT tariff.

Welding Transformer Rating (KVA)	Capacitor Rating (KVAR)
1	1
2	2
3	2
4	3
5	4
6	4
7	5
8	6
9	7.5
10	7.5
11	8
12	9
13	10
14	10
15	11
16	12
17	13
18	13
19	14
20	15
Above 20 Up to 22	16
Above 22 Up to 24	17.5
Above 24 Up to 26	18
Above 26 Up to 28	20
Above 28 Up to 30	21
Above 30 Up to 35	24
Above 35 Up to 40	27.5
Above 40 Up to 45	32.5
Above 45 Up to 50	35