TECHNICAL SPECIFICATIONS CURRENT VOLTAGE …

1 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref. No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 1/16 Smart Termination Rev. Date Revision Description Prepared by Checked by Approved by 0 13/06/16 First issue E. Scala L. Peretto 1 27/12/2016 Drawing update, cable features added E. Scala TECHNICAL SPECIFICATIONS CURRENT VOLTAGE INSTRUMENT TRANSFORMER CVS - 24 - G - ST THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref.

2 No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 2/16 INDEX 1. SCOPE OF THE DOCUMENT 4 2. CVS-24-G-ST DESCRIPTION 5 3. REFERENCE DOCUMENTS 6 4. OPERATIONAL CHARACTERISTICS of CVS-24-G-ST 6 5. SERVICE CONDITIONS OF THE CVS-24-G-ST 6 Service conditions 6 Ambient air temperature 6 Service conditions for indoor CVS-24-G-ST 6 Earthing system 7 Materials 7 Safety 7 6. RATING OF THE CURRENT INSTRUMENT TRANSFORMER CVS-24-G-ST 7 Standard values of rated primary CURRENT Ipr 7 Rated continuous thermal CURRENT Icth 7 Short-time CURRENT ratings 8 Standard values for symmetrical short-circuit CURRENT 8 Rated short-time thermal CURRENT Ith 8 Rated dynamic CURRENT Idyn 8 Standard frequency range 8 Rated auxiliary power supply VOLTAGE Uar 8 Rated auxiliary power supply frequency 8 Standard reference range of auxiliary power supply VOLTAGE 8 Standard reference range of temperature 8 Standard values for rated phase offset 8 Rating for analogue VOLTAGE output 8 Standard value of rated secondary VOLTAGE Usr 9 Rated burden Rbr 9 7.

3 RATING OF THE VOLTAGE INSTRUMENT TRANSFORMER CVS 9 Standard values of rated voltages 9 Rated primary VOLTAGE 9 Rated secondary VOLTAGE 9 Standard values of rated VOLTAGE factor ku 9 Earthed VOLTAGE instrument transformer 9 Standard values of rated auxiliary power supply VOLTAGE 9 Standard reference values of other influencing parameters 9 Standard reference range of frequency 9 Standard reference range of auxiliary power supply VOLTAGE 9 Standard reference range of burden 9 Standard reference range of temperature 9 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref.

4 No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 3/16 8. DESIGN FEATURES OF THE CURRENT VOLTAGE INSTRUMENT TRANSFORMER CVS-24-G-ST 9 General design features of CURRENT INSTRUMENT transformer 9 Rated insulation levels for primary terminals 9 Power-frequency withstand VOLTAGE 9 Lightning impulse capability 10 Partial discharges 10 Low- VOLTAGE components VOLTAGE withstand capability 10 General requirements for temperature rise 10 Electromagnetic compatibility requirements 10 Emission requirements 10 Immunity requirements 10 Signal-to-noise ratio 10 Wake-up CURRENT 11 General design features of VOLTAGE instrument transformer 11 Rated insulation levels for primary terminals 11 Power-frequency withstand VOLTAGE 11 Lightning impulse capability

5 11 Partial discharges 11 Insulation requirements for low- VOLTAGE components 11 Short-circuit withstand capability 11 Limits of temperature rise 11 General requirements 11 Transmitted overvoltage requirements 11 Electromagnetic compatibility requirements 11 Emission requirements 11 Immunity requirements 11 Reliability 12 Abnormal condition signaling 12 9. CLASSIFICATION OF TESTS 12 Type tests for CURRENT instrument transformer 12 Routine tests for the CURRENT instrument transformer 12 Type tests for the VOLTAGE instrument transformer 12 Routine tests for the VOLTAGE instrument transformer 13 10. TERMINALS MARKINGS 13 Connector type 13 Cable main features 13 11. RECORDING 13 12.

6 MAINTENANCE REQUIREMENTS 13 13. ACCURACY FOR SINGLE-PHASE CVS-24-G-ST MEASURING VOLTAGE INSTRUMENT TRANSFORMER 14 14 ADDITIONAL REQUIREMENTS FOR SINGLE-PHASE PROTECTIVE VOLTAGE INSTRUMENT TRANSFORMERS 14 THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref. No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 4/16 1. SCOPE OF THE DOCUMENT The scope of the present document is the definition of TECHNICAL characteristics of the Low Power CURRENT VOLTAGE Instrument Transformer CVS-24-G-ST. The CVS-24-G-ST is for INDOOR use. In the document the term Low Power will be omitted for sake of brevity. CURRENT VOLTAGE instrument transformer CVS-24-G-ST THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE.

7 ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref. No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 5/16 2. CVS-24-G-ST DESCRIPTION The device under specification ( ) is a CURRENT VOLTAGE transformer. It has the main electrical and mechanical characteristics listed in the table below. CVS-24-G-ST VOLTAGE instrument transformer features Rated insulation level 24/50/125 kV Rated primary VOLTAGE , Upn 20/ 3 kV, 15/ 3 kV, 10/ 3 kV Maximum VOLTAGE , Um 24 kV Rated VOLTAGE factor, Ku 1,9 for 8h VOLTAGE transformer Nominal transformation ratio, Kn 10000:1 Accuracy class 0,5 for measurement 3P for protection. The maximum deviation with respect to the prototype is for ratio error and 0,1 for phase error. CVS-24-G-ST CURRENT instrument transformer features Rated primary CURRENT , Ipr 300 A Rated primary time constant for transient performance, pr 40 ms Rated short time withstand thermal CURRENT , Ith 16 kA / 3s Rated Dynamic CURRENT , Idyn 31,5 kA CURRENT transformer Nominal transformation ratio, Kra 1000 A / 31 mV Accuracy class (Ratio error, Phase displacement, Deviation respect to the prototype accuracy) In compliance with the table of the TECHNICAL specification DJ5400 CVS-24-G-ST other features Nominal frequency 50 - 60 Hz THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE.

8 ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref. No. N/A Device Under Test: CVS-24-G-ST REV. 0 Page 6/16 Weight 1,5 kg Applicable Standards IEC 60044-7; 60044-8 3. REFERENCE DOCUMENTS The following reference documents were taken into consideration for the definition of CVS-24-GST operational characteristics: 1. IEC 60044-7 (1999) "Instrument transformers Part 7: VOLTAGE transformers"; 2. IEC 60044-8 (2002) "Instrument transformers Part 7: CURRENT transformers"; 3. IEC 60060 1 (2010) High VOLTAGE test techniques Part 1: General definitions and test requirements ; 4. IEC 60815 (1986) Guide for the selection of insulator in respect of polluted conditions 5. IEC 60071-2 (1996) Insulation co ordination Part 2: Application guide 6.

9 IEC 60044-6 Instrument transformers Part 6: Requirements for protective CURRENT transformers for transient performance 7. IEC 60044-1, Instrument transformers Part 1: CURRENT transformers 8. ENEL Spec. DJ5400 rev 0 (2013) Smart Termination 4. OPERATIONAL CHARACTERISTICS of CVS-24-G-ST According to [1] and [2], the operational characteristics may be collected into six main sessions: - Service conditions; - Ratings, - Design features; - Test performed; - Markings; - Accuracy for single-phase CVS- 24-G-ST measuring CURRENT VOLTAGE instrument transformer; THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ALTEA NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED File name: TECHNICAL specification Altea CVS-24-G-ST rev1 January 9, 2017 Customer : N/A Ref. No. N/A Device Under Test: CVS-24-G-ST REV.

10 0 Page 7/16 - Additional requirements for single-phase CVS-24-G-ST protective CURRENT VOLTAGE transformer. 5. SERVICE CONDITIONS OF THE CVS-24-G-ST According to [1, 2 and 3] CVS-24-G-ST is suitable for both measuring and protection purposes. Service conditions Air Temperature The Supplier declares that the combined sensor operates in the standard range of ambient air temperature [-5; +40] C. Service conditions for indoor CVS-24-G-ST CVS-24-G-ST is in compliance with the requirements of [1, and 2, ] regarding the service conditions for indoor use: Table Solar radiation Negligible Humidity and water vapour 1) the average value of the relative humidity, measured during a period of 24 h does not exceed 95 %; 2) the average value of the relative humidity for a period of one month does not exceed 90 %; 3) the average value of the water vapour pressure for a period of 24 h does not exceed 2,2 kPa; 4) the average value of the water vapour pressure for a period of one month does not exceed 1,8 kPa.