JJG 531-2003 English PDF

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JJG 531-2003: Verification Regulation of The DC Resistive Volt Ratio Box
Status: Valid

JJG 531: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 531-2003	449	Add to Cart	3 days	Verification Regulation of The DC Resistive Volt Ratio Box	Valid
JJG 531-1988	479	Add to Cart	4 days	Verification Regulation of the DC Resistive Volt Ratio Box	Obsolete

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Basic data

Standard ID: JJG 531-2003 (JJG531-2003)
Description (Translated English): Verification Regulation of The DC Resistive Volt Ratio Box
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Word Count Estimation: 17,187
Date of Issue: 2003-05-12
Date of Implementation: 2003-11-12
Older Standard (superseded by this standard): JJG 531-1988
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to a fixed rate, the upper limit of the rated input voltage is less than or equal to 1. 5kV, the level of accuracy of 0. 0005 ~ 0. 1 DC resistor divider box (hereinafter referred to as the partial pressure tank) in the first test, test and use the subsequent test. This procedure does not apply to the partial pressure of the high-pressure tank test.

JJG 531-2003: Verification Regulation of The DC Resistive Volt Ratio Box

---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.
Verification Regulation of The DC Resistive Volt Ratio Box National Metrology Verification Regulations of the People's Republic DC resistance voltage divider Released on.2003-05-12 Implementation of.2003-11-12 The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 531-1988 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on May 12,.2003, and Implemented on November 12,.2003. Focal Point. National Electromagnetic Measurement Technical Committee Drafting unit. Shandong Institute of Metrology This procedure entrusts the National Electromagnetic Measurement Technical Committee to explain Drafters of this procedure. Zhang Qin (Shandong Institute of Metrology) Song Wei (Shandong Institute of Metrology) Ma Xuefeng (Shandong Institute of Metrology)

table of Contents

1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (1) 3.1 Partial pressure box voltage ratio basic error (1) 3.2 Annual variation of voltage difference of basic voltage box (1) 3.3 Insulation resistance (1) 3.4 Power frequency withstand voltage test (2) 4 General technical requirements (2) 4.1 Appearance and wiring requirements (2) 4.2 Environmental requirements for the pressure divider (3) 4.3 Input voltage requirements of the voltage divider (3) 5 measuring instrument control (3) 5.1 Verification conditions (3) 5.2 Verification project (4) 5.3 Verification method (4) 5.4 Processing of verification results (7) 5.5 Verification cycle (7) Appendix A DC Resistance Voltage Divider Segment Docking Method (8) Appendix B DC Resistance Divider Calibration Original Record (10) Appendix C DC Resistance Divider Verification Certificate (Inside) Format (11) Appendix D DC Resistance Divider Verification Result Notification (Inside) Format (12) DC resistance voltage divider verification procedure

1 Scope

This procedure applies to a fixed ratio, the upper limit of the rated input voltage is less than or equal to 1.5kV, and the accuracy level is The first verification, subsequent verification and use of the 0.0005 level to 0.1 level DC resistance voltage dividing box (hereinafter referred to as the voltage dividing box) test. This procedure does not apply to the verification of high pressure dividers.

2 Overview

The DC resistance divider is a resistor network with a fixed ratio that provides a predetermined fraction of the output voltage equal to the input voltage. The device consists of. The voltage dividing box adopts the principle of resistance voltage division, and a circuit composed of a plurality of resistance elements connected in series. The voltage divider box is generally used for the DC potential difference meter for expanding the voltage limit, and can also be used for DC within the rated voltage range. Used for partial voltage in the circuit.

3 Metrological performance requirements

3.1 Voltage divider voltage ratio base error The voltage difference of the voltage divider box is expressed by the following formula. δ=Kn-KxKx ×100% (1) Where. δ---the voltage difference between the voltage divider and the base value (%); Kx---the actual voltage ratio of the tested partial pressure box; Kn---The nominal voltage ratio of the tested pressure box. The maximum allowable error of the voltage divider box and the voltage divider voltage ratio is shown in Table 1. Table 1 Pressure box accuracy level Accuracy level 0.0005 level 0.001 level 0.002 level 0.005 level 0.01 level 0.02 level 0.05 level 0.1 level Maximum allowable error δmax (%) ± 0.0005 ± 0.001 ± 0.002 ± 0.005 ± 0.01 ± 0.02 ± 0.05 ± 0.1 3.2 Annual variation of the voltage of the voltage divider than the base value The annual variation of the voltage of the voltage divider to the base value error shall be less than the maximum allowable error of the pressure divider, expressed as. Δδ=δ-δ' (2) Where. Δδ---the annual variation of the voltage of the voltage divider box than the base value (%); δ---the base value error (%) of the voltage ratio of the voltage divider; δ′---The base value error (%) of the voltage ratio of the voltage divider in the previous year. 3.3 insulation resistance 3.3.1 Determination of DC voltage when measuring insulation resistance ......

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