Three-phase converter transformers

Description

Transformers are designed for use with thyristor converters.
In standard design, the transformers are adjusted to fastening by means of a base welded into core or screwed angles.
If agreed, the transformers may have more tappings. The windings terminals may be placed on one side only, or on both sides of a transformer. Upon request, the transformers may be assembled in enclosures with the protection degree of IP 23, IP 44 and IP 54 with the possibility to insert supply cables through glands.

Technical data

Design Three-phase converter transformers ET3oB, ET3SB are produced in accordance with in accordance with requirements of relevant transformer standards and EN/IEC 61378-1
Insulation class

B(130oC) - standard up to  5 kVA; F(155oC) - standard above 5 kVA

Climatic class/Environmental class

C1/E0 - land design; C2/E1 - maritime design

Ambient temperature 40oC
Protection degree IP 00
Protection class I
Frequency 50/60 Hz
Vector group Yy0 - standard
Primary voltage up to 1000 V
Secondary voltage up to 1000 V
Terminals screw terminal blocks, cable lugs or copper bus bars
Fastening by means of angles

 

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