Single-phase isolating transformers

Single-phase isolating transformers ET1MED** for medical location

Isolating transformers type ET1MED are designed for power supply of medical locations (room group 2), in which there is a danger for health or live of patients in case of passage of a small current through a human body. These transformers meet requirements of standard PN/EN 61558-2-15:2011.
Standard transformers have a reinforced (double) insulation and there is a shield placed between primary and secondary windings connected to an insulated terminal "S". Transformers are provided with two type of sensors for temperature control circuits: posistors type PTC120. Transformers have an additional cental tapping "2M" to connect a relay for control of insulation condition. 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.
The fixing method of transformers has to ensure an electrical separation from the base plate (for example by means plastic support designed for rated voltage min. 2,5 kV). In order to meet customer expectations we also deliver transofmers together with complete system, which monitors medical network IT

The delivered automatic switching system ensures:

• feeding the reserve supply
• control of basic and reserve voltages
• sygnalling of transformer load
• continuous monitoring of the IT system network insulation resistance
• earth fault localization and signaling
• monitoring of continuity of main circuits of contactor coils

Details:

• Technical data
• Sketch and dimension table
• Casings

Design	Single-phase isolating transformers ET1MED are produced in accordance with requirements of  PN/EN 61558-2-15:2011
Insulation class	T 40E
Protection degree	IP 00
Protection class	II
Frequency	50 Hz lub 60 Hz
Primary voltage	230 V
Secondary voltage	230 V
Short-circuit voltage	<3% URATED
No-load current	<3% IRATED
Leakage current	max. 0,2 mA
Inrush current	12 x In max
Fastening	by means of angles

 

Technical sketch

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Standard design
Connection diagram of transformer

 

Dimension table

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Technical data of single-phase isolation transformers ET1MED

Type	Power [kVA]	In [A]	DELTA °Pfe [W]	DELTA °Pcu [W]	uz [%Un]	io [%In]	Ibezp [A] gG	L [mm]	Bmax [mm]	H [mm]	d [mm]	e [mm]	k [mm]	w [mm]	f [mm]	Weight [kg]
ET1MED - 2,5	2,5	11,3	10	86	2,72	0,95	16	200	180	320	140	145	177	258	11 x 15	29
ET1MED - 3,15	3,15	14,1	15	118	2,78	0,92	25	200	205	320	140	171	203	258	11 x 15	36
ET1MED - 4,0	4,0	18	19	129	2,57	0,89	25	240	180	365	200	140	178	305	11 x 16	41
ET1MED - 5,0	5,0	22,5	22	171	2,57	0,79	35	240	195	365	200	155	193	305	11 x 16	46
ET1MED - 6,3	6,3	28,3	23	212	2,42	0,67	35	240	195	365	200	155	193	305	11 x 16	52
ET1MED - 8,0	8,0	35,7	29	222	2,23	0,84	50	280	210	420	240	166	208	356	11 x 15	61
ET1MED - 10,0	10,0	45,2	30	300	2,9	0,5	63	280	309	420	240	198	225	356	11 x 15	80

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.

for horizontal mounting IP23

for vertical mounting IP23

wall mounted IP23

vertical design IP44

vertical design IP54

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