Separating transformers

Function
Separating transformers are classic transformers in which the primary and secondary windings are separated by basic insulation. Unlike isolation transformers, they do not feature a split bobbin or a screen between the windings, while still maintaining galvanic separation of circuits. They are intended for supplying lighting circuits, control circuits and other systems requiring an additional level of protection against disturbances and overvoltages.

As standard, transformers are designed for mounting on a welded base or by means of bolted mounting brackets. The number of taps on both the primary and secondary sides is selected individually according to customer requirements, allowing flexible adaptation of the unit to a specific application.

Benefits

Increased installation safety through galvanic separation of circuits
Suppression of electromagnetic disturbances
Protection against overvoltages and harmful impulses
Stable operation of low-voltage loads
Configuration flexibility thanks to selectable taps and mounting options

Applications

Railway industry
Marine industry
Power quality systems
Oil & gas industry
Heavy and mining industry
Renewable energy sources
Power electronics and drive systems

Custom Design

Manufacturing a transformer with parameters other than those specified in the catalogue is possible upon prior consultation.

Download catalogue cards

1-phase up to 2.5 kVA 3-phase up to 40 kVA

Product code

Details:

Design	Separating transformers are produced in accordance with requirements of: EN/IEC 61558-2-1; EN/IEC 60726
Insulation class	B(130^oC) - standard up to 5 kVA; F(155^oC) - standard above5 kVA
Climatic class /environmental class	C1/E0 - land design; C2/E1 - maritime design
Ambient temperature	40^oC
Protection degree	IP 00
Protection class	I
Frequency	50/60 Hz
Vector group	Dyn5 - standard
Primary voltage	up to 1000 V
Secondary voltage	up to 1000 V
Terminals	screw terminal blocks with the cross section from from 4 mm² up to 150 mm²or copper bus bars
Fastening	by means of angles

Technical sketch

Design A for the power up to 6,3 kVA

Design B for the power above 6,3 kVA

Dimension table

Technical data of three-phase separating transformers ET3S **

Type	Power [kVA]	L [mm]	B [mm]	H [mm]	d [mm]	e [mm]	f [mm]	Weight [kg]	Design
ET3S_* - 0,05	0,05	100	60	122	81	41	5 x 8	1,4	A
ET3S_* - 0,15	0,15	125	71	140	100	55	5 x 8	2,6	A
ET3S_* - 0,3	0,3	155	91	156	130	71	8 x 12	5,1	A
ET3S_* - 0,5	0,5	195	102	185	173	82	8 x 11	7,5	A
ET3S_* - 0,63	0,63	195	112	185	173	92	8 x 11	9,5	A
ET3S_* - 0,8	0,8	195	112	185	173	92	8 x 11	10,5	A
ET3S_* - 1,0	1,0	210	105	200	173	85	8 x 11	12	A
ET3S_* - 1,5	1,5	240	131	226	198	105	11 x 15	16	A
ET3S_* - 2,0	2,0	240	146	226	198	120	11 x 15	22	A
ET3S_* - 2,5	2,5	261	140	239	198	114	11 x 15	26	A
ET3S_* - 3,0	3,0	300	152	274	240	122	11 x 15	30	A
ET3S_* - 4,0	4,0	300	165	274	240	135	11 x 15	38	A
ET3S_* - 5,0	5,0	300	192	274	240	160	11 x 15	49	A
ET3S_* - 6,3	6,3	360	230	365	310	125	11 x 15	47	A
ET3S_* - 7,5	7,5	360	237	365	310	132	11 x 15	54	B
ET3S_* - 8,0	8,0	360	247	365	310	142	11 x 15	60	B
ET3S_* - 10,0	10,0	360	270	365	310	162	11 x 15	71	B

*) - for transformer design with climatic/environmental class C2/E1 (maritime design W/3 or tropical design T/3) the letter "M" or "G" ought to be added depending on final applicationfor transformer design with climatic/environmental class C2/E1 (maritime design W/3 or tropical design T/3) the letter "M" or "G" ought to be added depending on final application
**) - this table was prepared basing on the technical specification for transformer with voltage ratio 400//400 operating under normal conditions. For other conditions and data the values may change

Note:

Manufacturer reserves the right to make changes resulting from the continuous development of products offered.

If requested in advance, it is possible to manufacture transformer in other version.