Current transformers with primary winding terminals ELA1 W20 type

The current transformers have got their own primary windings, so it is possible to achieve a very accurate measurement from the lowest values of the primary current. The range of primary current is from 1 A up to 400 A.

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Technical data

Rated primary current	Ipr= 1 ÷ 400 A
Continuous thermal current	Icth= ext. 120%; 200% available on request
Rated secondary current	Isr= 5 A or 1 A
Rated power	Sr = 2.5 ÷ 20 VA
Accuracy class	0.2; 0.5; 1; 3; 0.2S; 0.5S
Rated short-time thermal current 1 sec. r.m.s.	Ith = 60 * Ipr
Rated dynamic current	Idyn = 2.5 * Ith
Rated frequency	fr = 50 ÷ 60 Hz
Max. voltage	Um = 0.72 kV
Test voltage	Up = 3 kV
Factor security	FS5; FS10 (other value available on request)
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