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Transformers

Transformers Overview

Safety transformers
Isolating transformers
1

STI and STZ single-phase transformers
DTI and DTZ three-phase transformers
Primary tappings ± 5%
Built and tested to
VDE 0550 Part 1, VDE 0550 Part 3,
IEC/EN 61558, UL 506, CSA 22.2 No. 66
STN control transformers
Built and tested to
VDE 0550 Part 1, VDE 0550 Part 3
Spring terminal 1
Accessories for
STZ single-phase transformers
STN control transformers
ET matching transformers
Matching transformers 2
ET single-phase transformers
DT three-phase transformers
Built and tested to
VDE 0550 Part 6 and VDE 0532
Autotransformers 2
ETSP single-phase transformers
ETSP single-phase transformers
Built and tested to VDE 0550
Transformers for use in the medical
field 3

ET-MED single-phase transformers
DT-MED three-phase transformers
Suitable for use to VDE 0107
Built and tested to
IEC/EN 61558
UTI multi-winding transformers 4
Primary tappings ± 20 V
Built and tested to
IEC/EN 61558, UL 506, CSA 22.2 No. 66.
DTA Three-phase starting
transformers DTA
Built and tested to
VDE 0550 Part 4, VDE 0532
Additional tappings 5
Primary, secondary
Also available with split
winding
Screen winding 6
Non-standard version with enhanced
climatic proofing 7
Sheet-steel enclosure, degree of
protection IP23 8
Enclosure for enhanced degree of
protection
Single-phase chokes 9
DEG smoothing chokes
DEK commutating chokes
Built and tested to
VDE 0550 Part 6, VDE 0532
DDK three-phase chokes 10
Commutating chokes
Built and tested to
VDE 0550 Part 6, VDE 0532

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