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Transformer
Series STA
- Advantages using a control transformerLow voltage drop in switching inductive loadsFlexible voltage adjustment by primary tapping (±5%)Limitation of short-circuit current in control circuitTypical applicationsControl voltage circuitsFunctional extra-low voltage PELVSafety extra-low voltage SELVProtective separation (of circuits)
| Introduction | Data sheets | Certificates |
The application of a control transformer is demanding EN 60204-1 for control circuits (few exceptions).The protection of transformers has to be primary with a Motor protection circuit-breaker in tripping class 10 or 10 A. Our circuitbreaker (Type 8523/8.) will be adjusted according the current rating of the transformer (see attached table). Secondary a miniature fuse or a MCB should be used.
The criterions are:
- Protective measures against direct or indirect contact (see also IEC 60364-4-43)
- Line protection
- Overload protection of switching devices (welding of contacts)
- All electrical settings of control circuit according to manufacturers' instructions
A minimum distance of 40 mm to all other components has to be kept.
| ATEX | ||||||
|---|---|---|---|---|---|---|
| Zone | 0 | 1 | 2 | 20 | 21 | 22 |
| For use in | x | x | ||||
Data sheets
Certificates
Nothing found.