NBN EN 60044-3 : 2003

FOREWORD
1 Scope and object
2 Definitions
3 Normal and special service conditions
4 Ratings
   4.1 General
   4.2 Limits of temperature rise
5 Design requirements
   5.1 General
   5.2 Transmitted overvoltages
6 Tests
   6.1 Classification of tests
   6.2 Type tests
   6.3 Routine tests
   6.4 Special tests
7 Type tests
   7.1 General
   7.2 Temperature-rise test
   7.3 Impulse tests on primary windings
8 Routine tests
   8.1 General
   8.2 Power-frequency withstand test on the primary
        windling
9 Special tests
   9.1 General
   9.2 Measurement of capacitance and dielectric
        dissipation factor
   9.3 Transmitted overvoltage measurement
10 Marking
   10.1 Rating plate marking
   10.2 Terminal marking
11 Additional requirements for measuring and protective
   combined transformer
   11.1 General
   11.2 Mutual influence
   11.3 Type test for accuracy of measuring and protective
        combined transformer
   11.4 Routine accuracy tests for measuring and protective
        combined transformers
Annex A (informative) The mutual influence of current and
        voltage transformers

Defines requirements, in addition to those given in EN 60185 and 60186, for transformers with combined voltage and current in the same casing.