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FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Identification and classification
   4.1 EGLA identification
   4.2 EGLA classification
5 Standard ratings and service conditions
   5.1 Standard rated voltages
   5.2 Standard rated frequencies
   5.3 Standard nominal discharge currents
   5.4 Service conditions
        5.4.1 Normal service conditions
        5.4.2 Abnormal service conditions
6 Requirements
   6.1 Insulation withstand of the SVU and
        the complete EGLA
        6.1.1 Insulation withstand of the housing
               of the SVU
        6.1.2 Insulation withstand of EGLA with
               shorted (failed) SVU
   6.2 Residual voltages
   6.3 High current duty
   6.4 Lightning discharge capability
   6.5 Short-circuit performance of the SVU
   6.6 Mechanical performance
   6.7 Weather aging of SVU
   6.8 Reference voltage of the SVU
   6.9 Internal partial discharges
   6.10 Coordination between insulator withstand
        and EGLA protective level
   6.11 Follow current interrupting
   6.12 Electromagnetic compatibility
   6.13 End of life
7 General testing procedure
   7.1 Measuring equipment and accuracy
   7.2 Test samples
8 Type tests
   8.1 General
   8.2 Insulation withstand tests on the SVU housing
        and on the EGLA with failed SVU
        8.2.1 General
        8.2.2 Insulation withstand test on the SVU
               housing
        8.2.3 Insulation withstand tests on EGLA with
               failed SVU
   8.3 Residual voltage tests
        8.3.1 General
        8.3.2 Procedure for correction and calculation
               of inductive voltages
        8.3.3 Lightning current impulse residual voltage
               test
        8.3.4 High current impulse residual voltage test
   8.4 Standard lightning impulse sparkover test
   8.5 High current impulse withstand test
        8.5.1 Selection of test samples
        8.5.2 Test procedure
        8.5.3 Test evaluation
   8.6 Lightning discharge capability test
        8.6.1 Selection of test samples
        8.6.2 Test procedure
        8.6.3 Test parameters for the lightning impulse
               discharge capability test
        8.6.4 Measurements during the lightning impulse
               discharge capability test
        8.6.5 Rated lightning impulse discharge capability
        8.6.6 List of rated energy values
        8.6.7 List of rated charge values
   8.7 Short-circuit tests
        8.7.1 General
        8.7.2 Preparation of the test samples
        8.7.3 Mounting of the test sample
        8.7.4 High-current short-circuit tests
        8.7.5 Low-current short-circuit test
        8.7.6 Evaluation of test results
   8.8 Follow current interrupting test
        8.8.1 General
        8.8.2 "Test method A"
        8.8.3 "Test method B"
   8.9 Mechanical load tests on the SVU
        8.9.1 Bending test
        8.9.2 Vibration test
   8.10 Weather aging tests
        8.10.1 General
        8.10.2 Sample preparation
        8.10.3 Test procedure
        8.10.4 Test evaluation
        8.10.5 Additional test procedure for polymer
               (composite and cast resin) housed SVUs
9 Routine tests
   9.1 General
10 Acceptance tests
   10.1 General
   10.2 Reference voltage measurement of SVU
   10.3 Internal partial discharge test of SVU
   10.4 Radio interference voltage (RIV) test
   10.5 Test for coordination between insulator
        withstand and EGLA protective level
        10.5.1 General
        10.5.2 Front-of-wave impulse sparkover test
        10.5.3 Standard lightning impulse sparkover test
   10.6 Follow current interrupting test
        10.6.1 General
        10.6.2 Test procedure
        10.6.3 Test sequence
        10.6.4 Test evaluation
   10.7 Vibration test on the SVU with attached electrode
        10.7.1 Test procedure and test condition
        10.7.2 Test evaluation
11 Bibliography

BS EN 60099-8 ED.1