Dreiphasiger Autotransformatoren EA3

Autotransformer is a special variation of transformer in which primary and secondary windings are connected and therefore there is no galvanic separation between circuits. Autotransformers are used to connect networks with different voltage levels. They are also used in starting systems and in systems whereever a lack of electrical separation between primary and secondary circuits is allowed. The undoubted advantage of the autotransformer is that compared to the transformer of the same outgoing power they are smaller, lighter and cheaper..

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Detaillierte Informationen:

Design	Three-phase autotransformers EA3 are produced in accordance with requirements of standard: EN/IEC 61558-2-1
Insulation class	B(130^oC) - standard up to 5 kVA; F(155^oC) - standard above 5 kVA
Climatic class/ Environmental class	C1/E0 - land design; C2/E1 - maritime design
Ambient temperature	40^oC
Protection degree	IP 00 lub IP 23
Protection class	I
Frequency	50/60 Hz
Primary voltage	up to 1000 V
Secondary voltage	up to 1000 V
Fastening	by means of angles

Technische Skizze


Standard design

Dimensionstabelle

Technical data of three-phase autotransformer type EA3

Type of autotransformer	Core power factor / Outgoing power [kVA]	Example date	L [mm]	B [mm]	H [mm]	d [mm]	e [mm]	f [mm]	Weight [kg]
EA3	0,05/0,1	3x500V/3X380V Yan0	100	46	82	80	31	5 x 8	0,9
EA3	2,1/12,3	3x400-343-336-329V Yan0	290	255	175	258	160	9 x 13	19
EA3	12/25	3x380V/3x300V Yan0	420	225	415	370	182	11 x 15	94
EA3	30/70	3x380V/3x220V Yan0	480	375	475	430	220	11 x 15	159
EA3	180/360	3x100v/3x500v Yan0	870	430	765	560	770	17 x 25	734