Low voltage outdoor current transformers ELA N

ELA N current transformers are designed to supply circuits of power equipment measuring systems with maximal voltage of 0.72kV, for the cable, the bus-bar or bushing on the low voltage side of the transformer.

The current transformers can operate in the ambient temperature range from -35°C to + 40°C in indoor and outdoor conditions.

The secondary side terminals are led as a cable with specified cross section and length. The rated load is determined on the end of the cable.

The ELA N current transformers with 0,2; 0,5; 0,2S and 0,5S accuracy classes may be calibrated in the Central Office of Measures.

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Technical data

Rated primary current	Ipr = 75 ÷ 1500 A
Rated continous thermal current	Icth = 120% * Ipn
Rated secondary current	Isn = 5 A
Rated load	S2n = 1 ÷ 2.5 VA
Accuracy class	0.2S; 0.5S; 0.2; 0.5 CT's ELA N may be calibrated in the Central Office of Measures
Rated short-time thermal current 1 sec.	Ith = 60 * Ipr
Rated dynamic current	Idyn = 2.5 * Ith
Rated frequency	f = 50 ÷ 60 Hz
Maximal voltage	Um = 0.72 kV
Rated test voltage	Up = 3 kV
Factor security	FS5
Degree of protection lP	IP 44

Product specification

Type/Technical data	Inside diameters	Rated primary current	Rated power	Accuracy class	Rated secondary current
ELA 1N Download specification	Ø41	75 ÷ 1000 A	1 ÷ 2.5 VA	0.2S; 0.5S; 0.2; 0.5;	5 A
ELA 2N Download specification	Ø60	200 ÷ 1500 A	1 ÷ 2.5 VA	0.2S; 0.5S; 0.2; 0.5;
ELA 3N Download specification	Ø90	400 ÷ 1500 A	1 ÷ 2.5 VA	0.2S; 0.5S; 0.2; 0.5;