ET1MED / ET3MED — Medical Isolating Transformers 2.5–10 kVA for IT Networks of Group 2 Rooms (Operating Theatres, Intensive Care), EN 61558-2-15
Country: Poland · Model: ET1MED / ET3MED
Isolating transformers with a power from 2.5 to 10 kVA for medical IT networks in group 2 rooms, such as operating theatres and intensive care. Single-phase ET1MED have a voltage of 230/230 V or 220/220 V, three-phase ET3MED 3×400/3×230 V. The leakage current does not exceed 0.2 mA, made to PN-EN 61558-2-15:2011.
- Types
- ET1MED — single-phase; ET3MED — three-phase
- Power
- 2.5; 3.15; 4.0; 5.0; 6.3; 8.0; 10.0 kVA
- ET1MED voltages
- 230/230 V or 220/220 V, 50 or 60 Hz; middle tap 2M for the insulation monitoring relay
- ET3MED voltages
- 3×400 V / 3×230 V, vector group YNyn0, 50 Hz
Technical specifications
| Types | ET1MED — single-phase; ET3MED — three-phase |
|---|---|
| Power | 2.5; 3.15; 4.0; 5.0; 6.3; 8.0; 10.0 kVA |
| ET1MED voltages | 230/230 V or 220/220 V, 50 or 60 Hz; middle tap 2M for the insulation monitoring relay |
| ET3MED voltages | 3×400 V / 3×230 V, vector group YNyn0, 50 Hz |
| Short-circuit voltage | < 3 % Un |
| No-load current | < 3 % In |
| Leakage current | not more than 0.2 mA |
| Inrush current | not more than 12 In |
| Insulation | double, screen between windings (terminal S); thermal class B (130 °C); protection class I |
| Temperature monitoring | PTC-120 thermistors |
| Version | C1/E0 (land), ambient 40 °C; IP00, to order IP23/IP44/IP54 |
| Weight | ET1MED 29–80 kg; ET3MED 42–106 kg |
| Standard | PN-EN 61558-2-15:2011 |
Replacement for
isolating OSM1, TSZI; no specialised medical (IT network) analogue
selected by purpose and main parameters, please confirm with the manager
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
In group 2 rooms current can flow through the patient's body, so the supply is provided through a transformer without an earthed neutral on the consumer side. The first earth fault then does not switch off the equipment but is only signalled. The windings have double insulation, with an electrostatic screen between them connected to an insulated terminal S. The short-circuit voltage and the no-load current are below 3 %, and the inrush current does not exceed 12 In. Thermal class B (130 °C), protection class I, and PTC-120 thermistors are built into each winding for temperature monitoring. ET1MED has a middle tap 2M for the insulation monitoring relay, and ET3MED has the vector group YNyn0 and a frequency of 50 Hz. The standard version is open, IP00, C1/E0, ambient temperature 40 °C, with vertical mounting on angle brackets. The weight of single-phase units is from 29 to 80 kg, of three-phase units from 42 to 106 kg.
How to choose
The type is determined by the network: ET1MED for single-phase supply, ET3MED for three-phase. The power is chosen from the series 2.5, 3.15, 4.0, 5.0, 6.3, 8.0 and 10.0 kVA according to the total load of the operating theatre or ward. For installation in general rooms, an IP23, IP44 or IP54 enclosure is ordered. The manufacturer also supplies the medical IT network automation with insulation monitoring and redundancy as a set. Other powers and parameters are made to order.
Request a price and lead time
ET1MED / ET3MED — Medical Isolating Transformers 2.5–10 kVA for IT Networks of Group 2 Rooms (Operating Theatres, Intensive Care), EN 61558-2-15. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Why is an isolating transformer needed in an operating theatre?
It creates an isolated IT network in which the first earth fault does not switch off the equipment but is only signalled. This is critical for group 2 rooms.
What power and voltage do ET1MED and ET3MED have?
Power from 2.5 to 10.0 kVA from a series of seven values. ET1MED at 230/230 V or 220/220 V at a frequency of 50 or 60 Hz, ET3MED at 3×400 V / 3×230 V.
What leakage current do these transformers have?
Not more than 0.2 mA. A screen with terminal S is placed between the primary and secondary windings.
What is the middle tap 2M for?
The insulation monitoring relay in single-phase ET1MED is connected to it.
Is there overheating protection?
Yes, PTC-120 thermistors are built into each winding. The thermal class of the insulation is B (130 °C).
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.