Path: Home > JJ > Page19 > JJG 1069-2011

Price & Delivery

US$399.00 · In stock · Download in 9 seconds
JJG 1069-2011: Verification Regulation of DC Shunts
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
JJG 1069-2011	English	399	Add to Cart	3 days [Need to translate]	Verification Regulation of DC Shunts

JJG 1069-2011: Verification Regulation of DC Shunts

---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 DC Shunts State verification procedures People's Republic of China DC shunt DCShunts Issued on. 2011-07-04 2011-10-04 implementation The State Administration of Quality Supervision, Inspection and Quarantine released DC shunt test procedures VerificationReg The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on July 4, 2011, and from From October 4, 2011 into effect. Focal point. the National Technical Committee on Electromagnetic measurement The main drafting units. the national high voltage metering station China Institute of Metrology Guangdong Provincial Institute of Metrology Wuhan Long-Electric Equipment Factory The measurement procedure commissioned the National Technical Committee is responsible for interpreting electromagnetic The main drafters of this procedure. Zhang said the Chinese (the national high voltage metering station) Cao Yunfei (Wuhan Long-Electric Equipment Factory) Shao Haiming (China Institute of Metrology) Luo Xudong (Guangdong Institute of Metrology)

table of Contents

1 Scope (1) 2. References (1) 3 Overview (1) 4 metering performance requirements (1) 4.1 accuracy class (1) 4.2 basic error (2) 5 General Requirements (2) 6 Control of measuring instruments (2) 6.1 Verification condition (2) 6.2 Verification Project (3) 6.3 Verification Methods (3) Processing 6.4 Verification Results (5) 6.5 test cycle (5) Appendix A test original record format (6) Appendix B test certificates/test results in the notice page format (page 2) (8) C calibration certificate/test results test results page notice Shape appendix (3) (9) Appendix D test shunt other methods (10) DC shunt test procedures

1 Scope

The order applies to the rated input current of 5A ~ 10kA, the accuracy of 0.02 to 2 grade, made of copper fittings and DC shunt resistor elements between the plate or rod composed of the initial verification, use and subsequent verification check. Also applies For measuring high-power direct current resistance test standard. 2. References This procedure refers to the following documents. JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement JJF1001-1998 common measurement terms and definitions GB/T 7676.1 ~ 9-1998 Direct acting indicating analogue electrical measuring instruments and their accessories When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Overview

DC shunt to measure direct current four-terminal resistance measuring work. It consists of two copper connectors and between A plate or rod resistance components, the voltage drop across the shunt on the potential of the terminal mounted on the joint leads. Shunts The rated voltage drop at the standard value selection, such as 75mV. Shunt metrological parameters of the rated input current IN, Nominal output voltage UN and the nominal shunt resistor RN (RN = UN/IN), when applied to the input current shunt I1, this When the output voltage of the U2 (when the output current is zero), the actual definition of the shunt resistor is shown RM = U2/I1.

4 metering performance requirements

4.1 accuracy class 4.1.1 DC shunt accuracy level is divided into 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2 7 levels. Relative error is defined 4.1.2 DC shunt is. γ = U2-I1RNI1RN × 100% (1) 4.1.3 DC shunt relative error may also be equivalently expressed as. γ = RM-RNRN × 100% (2) Formula (1), the formula (2). γ --- shunt relative error; U2 --- shunt output voltage indication, mV; I1 --- shunt the input current indication, A; RN --- shunt resistor nominal value, mΩ; RM --- shunt resistor actual indication, mΩ. ...