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JJF 1619-2017: Calibration Specification for Testing Instrument of Transformer Secondary Loop Voltage Drops and Loads
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| JJF 1619-2017 | English | 489 |
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Calibration Specification for Testing Instrument of Transformer Secondary Loop Voltage Drops and Loads
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JJF 1619-2017
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Basic data | Standard ID | JJF 1619-2017 (JJF1619-2017) | | Description (Translated English) | Calibration Specification for Testing Instrument of Transformer Secondary Loop Voltage Drops and Loads | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A55 | | Classification of International Standard | 17.220 | | Word Count Estimation | 21,271 | | Date of Issue | 2017-02-28 | | Date of Implementation | 2017-05-28 | | Quoted Standard | JJG 169-2010 | | Regulation (derived from) | General Administration of Quality Supervision, Inspection and Quarantine No. 23 of 2017 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to the rated frequency of 50Hz, using the difference method of the principle of the voltage transformer secondary circuit voltage drop tester and the use of voltammetry principle of the transformer secondary load tester (referred to as the secondary pressure drop load tester) calibration. | JJF 1619-2017: Calibration Specification for Testing Instrument of Transformer Secondary Loop Voltage Drops and Loads
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Testing Instrument of Transformer Secondary Loop Voltage Drops and Loads
National Metrological Technical Code of the People's Republic of China
Secondary pressure drop and load of transformer
Tester calibration specification
2017-02-28 released
2017-05-28 Implementation
State Administration of Quality Supervision, Inspection and Quarantine issued
Secondary pressure drop and load of transformer
Tester calibration specification
Unit. National Electromagnetic Metrology Technical Committee High Pressure Metering Subcommittee
Major drafting unit. National high voltage metering station
State Grid Hunan Electric Power Company Electric Power Research Institute
Participated in the drafting unit. State Grid Sichuan Electric Power Company
State Grid Electric Power Research Institute of Qinghai Electric Power Company
State Grid Hubei Electric Power Company Electric Power Research Institute
Yichang City, Hubei Province, the measurement test
This specification is commissioned by the National Electromagnetic Metrology Technical Committee of the High Pressure Metrology Subcommittee.
The main drafters of this specification.
Lei Min (National High Voltage Metering Station)
Yue Changxi (national high voltage metering station)
Luo Zhikun (State Grid Hunan Electric Power Company Electric Power Research Institute)
Participate in the drafters.
Lu Bin (State Grid Sichuan Electric Power Company)
Jia Jia (State Grid Qinghai Electric Power Company Electric Power Research Institute)
Wang Zuowei (State Grid Hubei Electric Power Company Electric Power Research Institute)
Chen Yu (Yichang City, Hubei Province, measurement test)
table of Contents
Introduction (II)
1 Scope (1)
2 References (1)
3 terms and units of measurement (1)
3.1 voltage transformer secondary pressure drop (1)
3.2 Secondary load of voltage transformer (1)
3.3 Secondary load of current transformer (1)
4 Overview (1)
5 Metrological characteristics (2)
5.1 Insulation level (2)
5.2 voltage and current dial indicator error (2)
5.3 Resolution (2)
5.4 Load capacity (3)
5.5 PT secondary pressure drop (3)
5.6 PT secondary load (3)
5.7 CT secondary load (3)
5.8 Operating voltage (current) Independence (3)
6 Calibration conditions (3)
6.1 Environmental conditions (3)
6.2 standard and ancillary equipment (4)
7 Calibration items and calibration methods (4)
7.1 Calibration items (4)
7.2 Calibration method (4)
8 Expression of calibration results (7)
9 re-school time interval (8)
Appendix A Transformer Secondary Pressure Drop Tester Ratio Difference and Phase Difference Calibration Uncertainty Evaluation Example (9)
Appendix B Calibrate Original Record Format (13)
Appendix C Calibration Certificate Inside Page Format (15)
Introduction
This specification is based on JJF 1001-2011 "General Metrology Terms and Definitions" and JJF 1071-2010 "National Metrology
Calibration specification preparation rules ".
This specification is the first release.
Calibration Standard for Secondary Pressure Drop and Load Tester of Transformer
1 Scope
This specification applies to the rated frequency of 50Hz, the use of difference method of the principle of the voltage transformer secondary circuit voltage drop test
And the use of voltammetry principle of the transformer secondary load tester (referred to as the secondary pressure drop load tester) calibration.
2 reference file
This specification refers to the following documents.
JJG169-2010 transformer calibrator
For dated references, only the dated edition applies to this specification; references that are not dated
, The latest version (including all modifications) applies to this specification.
3 terms and units of measurement
3.1 voltage transformer secondary pressure drop transformersecondaryloopvoltagedrops
By the voltage transformer (hereinafter referred to as PT) secondary circuit contact resistance, wire resistance and distribution parameters caused by
Transformer terminal voltage and power meter terminal voltage is not equal to the phase difference caused by the difference, including the ratio difference and the phase difference, the unit were
For% and points (').
3.2 secondary load of voltage transformer voltagetransformersecondarylooploads
PT secondary measurement equipment, secondary cable and secondary cable and ground capacitance between the total admittance, single
Bit for the Siemens (S).
3.3 Current transformer secondary load currenttransformersecondarylooploads
Current transformer (hereinafter referred to as CT) secondary measurement of the instrument impedance, secondary cable and contact resistance of the total
Impedance in ohms (Ω).
4 Overview
The secondary pressure drop load tester has the inverting component X and the quadrature component Y as the basic variables.
When measuring the voltage drop of the PT secondary circuit, by measuring the difference between the PT secondary terminal voltage and the energy meter terminal voltage difference
f and the phase difference δ, according to equation (1) calculated PT secondary circuit pressure drop relative value. Where the ratio difference f is the same phase
And the phase difference δ is a quadrature component. In the calibration, f, δ as the main measurement object.
Δu =
100 f
2 (0.0291δ) 2 (1)
Where.
Δu --- pressure drop relative error,%;
f - ratio difference,%;
δ --- phase difference, (').
When measuring the secondary load of PT, by measuring the conductivity component G and the electric charge component B of the PT secondary circuit,
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