Standards related to:

JJF 1067-2014JJF 1067-2014

Calibration Specification forApparatus of Voltage Ratio Standards at Power Frequency

People's Republic of China National Metrology Technical Specifications

Frequency voltage proportional Standards at

Issued on. 2014-04-21

2014-10-21 implementation

The State Administration of Quality Supervision, Inspection and Quarantine released

Frequency voltage ratio

Standards at

atPowerFrequenc

Replacing JJF 1067-2000

Focal point. the National Technical Committee of the electromagnetic high-pressure metering metering Technical Committee

The main drafting units. the national high voltage metering station

Qinghai Electric Power Research Institute

Xinjiang Institute of Metrology

Henan Institute of Metrology

Participated in the drafting. State Grid Electric Power Research Institute Tianjin Electric Power Corporation

This specification commissioned the National Technical Committee of the electromagnetic high-pressure metering metering Technical Committee is responsible for interpretation

The main drafters of this specification.

Wang Qin (the national high voltage metering station)

Zhou Feng (the national high voltage metering station)

Jia Nan (Qinghai Electric Power Research Institute)

Song Wei (Xinjiang Institute of Measurement and Testing)

STAFF time (Henan Institute of Metrology)

Drafters participate.

Item Joan (the national high voltage metering station)

Sun Zhe (State Grid Electric Power Research Institute Tianjin Electric Power Corporation)

table of Contents

Introduction (Ⅱ)

1 Scope (1)

2. References (1)

3 terminology and units of measurement (1)

Lift variation 3.1 (1)

4 Overview (1)

4.1 Precision inductive voltage divider (1)

4.2 Tandem precision voltage transformer (2)

4.3 Transformer series voltage adder (3)

4.4 reference potential method (4)

5 Metrological characteristics (5)

5.1 basic error (5)

Stability 5.2 (6)

5.3 Error shield (6)

5.4 dielectric strength (6)

5.5 lift variation (6)

6 calibration conditions (7)

Environmental conditions 6.1 (7)

6.2 standards and other measuring equipment (7)

7 calibration items and calibration methods (7)

7.1 calibration items (7)

7.2 Calibration Method (8)

8 calibration results expression (11)

8.1 calculated error (11)

8.2 rounding error (11)

8.3 single disk error statistics inductive voltage divider (11)

More than 8.4 disk error statistics inductive voltage divider (11)

8.5 series voltage adder error statistics (12)

9 calibration certificate (12)

10 Recalibration interval (13)

Appendix A Measurement Uncertainty Example (14)

Appendix B Calibration original records and statistical format (15)

Appendix C calibration certificate page format (20)

Appendix D calibration certificate calibration results page format (21)

introduction

JJF 1071 "national calibration specifications write rules metering", JJF 1001 "common measurement terms and definitions" and

JJF 1059.1 "Evaluation and Expression of Uncertainty in Measurement" together constitute the basic support system calibration specification revision work

Column specification.

This specification compared with JJF 1067-2000, in addition to editorial changes, the major technical changes are as follows.

--- Improved traceability series voltage summing circuit (see 4.3);

--- Modified frequency voltage ratio standard in measurement accuracy means the accuracy of the correction value based on the ratio of the main criteria

Requirements defined limits and error list (see section 5.1, Table 1);

--- Modified frequency voltage ratio standard means a standard appliance needs 1.5 times the power frequency voltage withstand without damage

Requirements (see 5.4.1);

--- Modify the multi-disk error representation inductive voltage divider, and the elimination of more than half of the divider plate induction whole school

Registration (see 4.1 and 7.2.3.2).

Frequency voltage proportional Standards at

1 Scope

This specification is applicable to precision inductive voltage divider and precision voltage transformer-based standard, a reference potential method and strings

United voltage addition as the working methods traceable calibration frequency voltage ratio standard equipment.

2. References

This specification refers to the following documents.

JJG314-2010 measuring voltage transformer

GB/T 16927.1 High-voltage test techniques - Part 1. General definitions and test requirements

For dated references, only the edition applies to the specification; undated reference documents

Member, the latest edition (including any amendments) applies to this specification.

3 terminology and units of measurement

The following terms and definitions apply to this specification.

3.1 Lifting deteriorated variationbetweenvoltageriseandfal

Frequency voltage ratio standard device in the voltage rise and voltage drop during the same percentage error of the voltage measurement results

Fruit of the difference.

4 Overview

4.1 Precision inductive voltage divider

Precision inductive voltage divider is divided into single-disc and multi disc induction inductive voltage divider divider categories. With conduct their frequency voltage ratio standard

Associate the auto-sensing voltage divider commonly used two-stage structure, the electrical schematic shown in Figure 1 and Figure 2. To reduce the lead

Drop Error, exciting winding W1 and W2 winding ratio should use the respective connecting wires with a voltage terminal.

As power frequency voltage ratio standard is used, the induced voltage divider ratio error as defined by the formula (1).

= (U

2-U

1/Kn)/U

2 = ΔU

2/U

twenty one)

Where.

Kn --- induction nominal voltage divider ratio, and inductive voltage divider ratio to deliver basic reciprocal relationship;

1 --- inductive voltage divider input voltage, V;

2 --- inductive voltage divider output open circuit voltage, V.

NOTE. If you use need to be converted to an error ratio of the input side, should be the appropriate instructions in the calibration results.

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