NBN EN 60270 : 2001 AMD 1 2016

1 Scope
2 Normative references
3 Definitions
4 Test circuits and measuring systems
   4.1 General requirements
   4.2 Test circuits for alternating voltages
   4.3 Measuring systems for apparent charge
   4.4 Requirements for measurements with
       digital PD-instruments
   4.5 Measuring systems for derived
       quantities
   4.6 Ultra-wide band instruments for
       PD detection
5 Calibration of a measuring system in the
   complete test circuit
   5.1 General
   5.2 Calibration procedure
6 Calibrators
   6.1 General
   6.2 Calibrators for the calibration of
       a measuring system in the complete
       test circuit
   6.3 Calibrators for performance tests
       on measuring systems
7 Maintaining the characteristics of calibrators
   and measuring systems
   7.1 Schedule of tests
   7.2 Maintaining the characteristics of calibrators
   7.3 Maintaining the characteristics of measuring
       systems
8 Tests
   8.1 General requirements
   8.2 Conditioning of the test object
   8.3 Choice of test procedure
9 Measuring uncertainty and sensitivity
10 Disturbances
11 Partial discharge measurements during tests
   with direct voltage
   11.1 General
   11.2 Quantities related to partial discharges
   11.3 Voltages related to partial discharges
   11.4 Test circuits and measuring systems
   11.5 Tests
Annex A (normative) Performance test on a calibrator
         General
         A.2 Reference method
         A.3 Alternative method
Annex B (informative) Test circuits
Annex C (informative) Measurement on cables, gas insulated
         switchgear, power capacitors and on test objects
         with windings
         General
         C.2 Attenuation and distortion phenomena
         C.3 Resonance phenomena, reflections
         C.4 Location of discharges
Annex D (informative) The use of radio disturbance
        (interference) meters for the detection
         of partial discharges
Annex E (informative) Guidelines to digital acquisition
         of partial discharge quantities
         General
         Instructions for processing analogue apparent
         charge signals
         Recommendations for recording test voltage,
         phase angle and time of occurrence of a PD
         pulse
Annex F (informative) Non-electrical methods of PD
         detection
         General
         F.2 Acoustic detection
         F.3 Visual or optical detection
         F.4 Chemical detection
         F.5 Reference documents
Annex G (informative) Disturbances
         Sources of disturbances
         Detecting disturbances
         Reduction of disturbances
         G.1.1 Screening and filtering
         G.1.2 Balanced circuits
         G.1.3 Electronic processing and recovering
               of signals
         Disturbance levels
Annex ZA (normative) Normative references to international
          publications with their corresponding European
          publications

Applies to the measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages up to 400 Hz or with direct voltage.