Three-phase isolating transformers for medical location

Three-phase isolating transformers ET3MED** for medical location

Isolating transformers type ET3MED 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. Transformers are provided with two type of sensors for temperature control circuits: posistors type PTC120. Upon request, the transformers may be assembled in enclosures with the protection degree of IP 23, IP 44 and IP 54. 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	Three-phase isolating transformers ET3MED are produced in accordance with requirements of PN/EN 61558-2-15:2011
Insulation class	T 40E
Protection degree	IP 00
Protection class	I
Frequency	50 Hz
Primary voltage	3 x 400 V
Secondary voltage	3 x 230 V
Short-circuit voltage	<3%Un
No-load current	<3%In
Leakage current	max. 0,2 mA
Inrush current	12 x In max
Vector group	YNyn0
Fastening	by means of angles

 

Technical sketch

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Standard design		Connection_diagram

 

Dimension table

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Technical data of three-phase isolation transformers ET3MED

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]	Design
ET3MED - 2,5	2,5	3,7	28	60	2,8	1,9	6	300	180	320	240	145	177	258	11 x 15	42	A
ET3MED - 3,15	3,15	4,7	32	80	2,9	1,8	10	300	200	320	240	160	192	258	11 x 15	49	A
ET3MED - 4,0	4,0	6,0	38	100	2,6	1,7	10	300	210	320	240	171	203	258	11 x 15	53	A
ET3MED - 5,0	5,0	7,5	39	125	2,9	1,7	16	360	190	365	300	146	178	305	11 x 21	63	B
ET3MED - 6,3	6,3	9,4	40	160	2,8	1,7	16	360	200	365	300	161	178	305	11 x 21	70	B
ET3MED - 8,0	8,0	12,0	51	210	2,9	1,6	20	420	220	415	370	166	208	356	11 x 21	89	B
ET3MED - 10,0	10,0	14,9	60	220	2,6	1,6	25	420	230	420	370	181	223	356	11 x 21	106	B

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

wall mounted IP23

for vertical mounting IP23

vertical design IP44

vertical design IP54

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