DYN11 dry-type low-voltage isolating transformers 7–2000 kVA
Country: · Model: DYN11
Dry-type isolating transformer for low voltage, 7–2000 kVA, with Dyn11 connection and an electrostatic screen. Rated voltage is 400/400 V at 50 Hz. It sits in front of UPS units and other sensitive equipment in data centres, medical facilities and industrial sites.
- Power
- K4: 10–1000 kVA (Cu), 40–2000 kVA (Al); K13 and K20 up to 800/1600 kVA
- Connection
- delta/star Dyn11
- K-factor
- 4, 13, 20
- Voltage
- 400/400 V, 50 Hz
Technical specifications
| Power | K4: 10–1000 kVA (Cu), 40–2000 kVA (Al); K13 and K20 up to 800/1600 kVA |
|---|---|
| Connection | delta/star Dyn11 |
| K-factor | 4, 13, 20 |
| Voltage | 400/400 V, 50 Hz |
| Windings | copper or aluminium |
| Enclosure | IP00 or IP21 |
| Standards | EN 60076 / IEC 61558 |
Replacement for
TSZI, TSZ 0.38/0.23 kV (dry low-voltage), OSM1-0.063…4 kVA (single-phase), OSO; K-factor — made to special order
selected by purpose and main parameters, please confirm with the manager
Replacement pages: ОСМ1-0,063, ОСМ1
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The delta/star Dyn11 connection and the 400/400 V ratio give galvanic isolation without changing the voltage level. The electrostatic screen reduces the transfer of high-frequency noise from the mains into the load. Windings are made of copper or aluminium. For K-factor 4 the range is 10–1000 kVA with copper and 40–2000 kVA with aluminium, while the K13 and K20 versions go up to 800/1600 kVA. The enclosure is supplied in the IP00 or IP21 version.
How to choose
Start with the K-factor. The available values are 4, 13 and 20, and the more non-linear consumers the load contains, the higher the rating you need. Next comes the winding material. For K4, copper is offered up to 1000 kVA and aluminium up to 2000 kVA. IP00 suits a transformer that already stands inside a closed cabinet or chamber, while IP21 is for cases where protection against finger contact and vertically falling drops is required. If the network calls for a delta/zigzag connection, look at the DZN0 model, 7–2000 kVA, with class H insulation, 125 K temperature rise and M270 steel.
Request a price and lead time
DYN11 dry-type low-voltage isolating transformers 7–2000 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What power ratings are available for the DYN11 transformer?
For K-factor 4 it is 10–1000 kVA with copper and 40–2000 kVA with aluminium windings. The K13 and K20 versions go up to 800/1600 kVA.
What does the Dyn11 connection mean and what is the output voltage?
The primary winding is delta-connected and the secondary is star-connected, with 11 denoting the vector group. The voltage is 400/400 V at 50 Hz, so the level stays unchanged.
Which K-factor should I choose for a UPS load?
The available K-factors are 4, 13 and 20. For a load with a large share of rectifiers take 13 or 20, while K4 fits when harmonics are low.
How do the IP00 and IP21 versions differ?
IP00 is the open version without an enclosure, while IP21 has an enclosure protecting against finger contact and vertical drips.
Which standards does the transformer meet and what is the screen for?
The design follows EN 60076 and IEC 61558. The electrostatic screen reduces the transfer of high-frequency noise between the mains and the load.
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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.