Single-phase isolating transformers ET1o ** with the power between 2,0 and 25 kVA

Isolating transformers are assigned for supplying electric devices, if separation of electrical circuits required. In standard design, the transformers are adjusted to fastening by means of screwed angles. If agreed, the transformers may have more tappings. The windings terminals may be placed on one side only, or on both sides of a transformer. Primary and secondary windings are separated by copper shield. Upon request, the transformers may be assembled in enclosures with the protection degree of IP 23, IP 44 and IP 54 with the possibility to insert supply cables through glands.

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Details:

Design	Isolating transformers produced in accordance with requirements of EN/IEC 61558-2-4
Insulation class	B(130^oC) - standard do 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
Protection class	I
Frequency	50/60 Hz
Primary voltage	up to 1000 V
Secondary voltage	up to 500 V
Terminals	screw terminal blocks with the cross section from 1,5 mm² up to 150 mm² or 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 single-phase isolating transformers ET1o **

Type	Power [kVA]	L [mm]	B [mm]	H [mm]	d [mm]	e [mm]	f [mm]	Weight [kg]	Design
ET1o_* - 2,0	2,0	178	140	240	128	114	11 x 15	17	A
ET1o_* - 2,5	2,5	178	152	240	128	126	11 x 15	21	A
ET1o_* - 3,0	3,0	200	165	271	140	133	11 x 15	23	A
ET1o_* - 3,5	3,5	200	177	271	140	145	11 x 15	27	A
ET1o_* - 4,0	4,0	200	195	271	140	160	11 x 15	30	A
ET1o_* - 5,0	5,0	240	165	323	200	127	11 x 15	35	A
ET1o_* - 6,3	6,3	240	180	323	200	142	11 x 15	40	A
ET1o_* - 7,5	7,5	280	260	425	240	151	11 x 15	46	B
ET1o_* - 8,0	8,0	280	260	425	240	151	11 x 15	48	B
ET1o_* - 10,0	10,0	280	275	425	240	168	11 x 15	56	B
ET1o_* - 12,0	12,0	280	290	425	240	178	11 x 15	63	B
ET1o_* - 15,0	15,0	320	300	485	270	190	13 x 18	74	B
ET1o_* - 16,0	16,0	320	300	485	270	190	13 x 18	76	B
ET1o_* - 20,0	20,0	360	330	545	310	220	13 x 18	98	B
ET1o_* - 25,0	25,0	360	350	545	310	240	13 x 18	120	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 application
**) - this table was prepared basing on the technical specification for transformer with voltage ratio 230//230 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.