Foreword

1Scope

2Normative references

3Terms and definitions

4Power supply to the transformer-rectifier unit

5Transformer types

6Dimensions

7Additional equipment

7.1Grounding provision

7.2Thermal protection

7.3Output current sensing coil

7.4Output voltage sensing wires

8Protection of the rectifier

9Marking

9.1Primary

9.2Output terminals

9.3Rating plate

10Designation

11Test conditions

11.1Type tests

11.2Routine tests

11.3Test procedures

11.3.1General visual examination

11.3.2Open-circuit tests

11.3.3Minimum output current under load condition

11.3.4Cooling circuit test

11.3.5Dynamic behaviour of the output terminals

11.3.6Mechanical strength

Annex ARelationship between output current and duty factor (informative)

Annex BDimensions of transformers (normative)

Bibliography