three-phase toroidal-transformer potted 400VA until 30 kVA

cast-resin three-phase power-dry-transformers, cast-resin three-phase-isolation- transformers as toroidal core version

datasheet as PDF-File

applications

isolation transformer according to IEC/EN61558-2-4 for general purpose, e.g. for safe isolation for devices according to VDE0700/EN60335, or as a distribution transformer to build TN-netsystems. Useable for potential free net, for test systems or as power-ratio transformers. For machine controls,
vehicle construction, automotive techniques, as toroidal-isolating-transformer to supply medical rooms, as high current-transformer up to 10 kA.

description

The core of toroidal transformers consists of a thin grain-oriented tape, which is wound in direction of the magnetic flow corresponds with the direction of rolling and the losses are very low. The airgap just arises at the first and last winding, hence it is very small. Thus a low magnetic stray field, small weight and small volume are the results.

The three-phase toroidal transformer consists of three separate transformers without chain-linking to the core. The arrangement of the three phases can be selected. Thus an adjustment to difficult geometric relations is possible.

If one phase fails at the input, there will remain at least one phase without phase displacement at the output. In case an phase conductor has an earth fault, the voltages of the other two phase conductors remain constant, hence they won’t increase.

technical data

3AC-isolating transformer according IEC/EN61558-2-4,
 VDE 0570-2-4
fully casted in a housing
on request IP 54 possible
temperature class B
max. ambient temperature 40°C
fire class UL94 V0
prepared for protection index I
cable connectons
or block terminals touch safe according VBG4
or flat termination with bolt, not touch safe
frequency 50-60Hz
 

table

sec.- power efficiency voltage- factor dimensions in mm copper weight total weight BV H L L1 B B1 Ø 17 kVA - - 381 630 530 365 285 10,5 151 kg - 2144001a technical changes and optimization reserved 05/2008