Description
The Three-Phase AutoTransformers Ip23 can be installed in places where metal protection is required, but without a high degree of demand and where galvanic isolation is not required.
Technical characteristics:
| Type | Autotransformer not circuit separator |
| Thermal class | <63kVA: E (115ºC) / Ta=40ºC – >63kVA: F (140ºC) / Ta=40ºC |
| Winding | Windings impregnated with varnish Class HC 200ºC |
| Connection group | YNO |
| Frequencies | 50 – 60Hz |
| Test voltage | 3KV against mass |
| Rules | <25kVA: EN-61558 / >25kVA: EN-60076 – EN-60726 – Directiva 2006/95CEE |
| Others | Pass-through terminals or plates – Protection against electric shocks Class I – Tropicalized – Lifting bolts from 31.5kVA |
| Degree of protection | IP-23 epoxy painted metal envelope (RAL 7032), polyamide cable glands according to UNE20324-EN60529 |
REFERENCES:
There are different references of the AT series of three-phase autotransformers IP23.

Applications:
Three-phase IP-23 auto-transformers are used to:
Observations:
The three-phase IP-23 auto-transformers are manufactured according to IEC 96-2, IEC-742, EN-60742 and the indicated data can be modified as needed, without prior notice.

