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JJG 726-2017 English PDF

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Q: Should I purchase the latest version JJG 726-2017?

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US$529.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 726-2017: Standard Inductors
Status: Valid

JJG 726: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 726-2017	529	Add to Cart	4 days	Standard Inductors	Valid
JJG 726-1991	519	Add to Cart	3 days	Verification Regulation of Standard Inductors	Obsolete

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Basic data

Standard ID: JJG 726-2017 (JJG726-2017)
Description (Translated English): Standard Inductors
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A55
Classification of International Standard: 17.220
Word Count Estimation: 23,252
Date of Issue: 2017-09-26
Date of Implementation: 2018-03-26
Older Standard (superseded by this standard): JJG 726-1991
Quoted Standard: JJF 1023-1991; JJF 1094-2002; GB/T 8554-1998
Regulation (derived from): General Administration of State Quality Inspection Announcement 2017 No. 78
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the first verification, subsequent verification and in-service inspection of a standard inductor with an inductance range of 1��H to 10000H and a frequency range of 20Hz to 100kHz.

JJG 726-2017: Standard Inductors

---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.
(Standard Inductor Verification Regulation) People's Republic of China National Metrological Verification Procedures Standard inductor 2017-09-26 Posted 2018-03-26 implementation General Administration of Quality Supervision, Inspection and Quarantine released Standard inductor Verification procedures Replacing JJG 726-1991 The focal point. National Electromagnetic Measurement Technical Committee The main drafting unit. China Institute of Metrology Participate in the drafting unit. Beijing Institute of Measurement and Testing Astronomy Electronic Technology Co., Ltd. opened The rules entrusted the National Electromagnetic Measurement Technical Committee responsible for the interpretation The main drafters of this procedure. Yang Yan (China Institute of Metrology) Chen Yan (China Institute of Metrology) Participate in the drafters. Jin Haibin (Beijing Oriental Institute of Measurement and Testing) Jin Pan (Chengdu open spectrum Electronic Technology Co., Ltd.)

Introduction (Ⅲ) 1 Scope (1) 2 References (1) 3 Terms and measurement units (1) 3.1 Inductance (1) 3.2 Quality factor (1) 4 Overview (1) 5 measurement performance requirements (2) 5.1 indication error (2) 5.2 years of stability (2) 5.3 Deviations (3) 5.4 Accuracy level (3) 5.5 Quality Factor and DC Resistance (4) 6 General technical requirements (4) 7 measuring instruments control (4) 7.1 test conditions (4) 7.2 test items (6) 7.3 test method (6) 7.4 test results of the treatment (9) 7.5 test cycle (10) Appendix A Standard Inductor Frequency Characteristics Measurement (11) Appendix B Standard Inductor Verification Original Record Reference Format (13) Appendix C Certificate of Conformity/Verification Result Page Layout (Page 2) (15) Appendix D Verification Certificate/Verification Result Notification Verification Result Page Style (Page 3) (16)

Introduction

The rules based on JJF1001-2011 "common measurement terms and definitions", JJF1002-2010 "National Metrology Rules for the preparation of rules "and JJF1059.1-2012" Evaluation and Expression of Measurement Uncertainty "compilation. This regulation is the revision of JJG 726-1991 "Standard Inductor Verification Regulation". And JJG 726-1991 phase Than, in addition to editorial changes, the main technical changes in this procedure are as follows. --- Increasing the standard by the same level of accuracy of the inductor; --- Delete some test items, such as temperature and humidity coefficient; --- Verification method for the use of automatic LCR meter verification device added instructions; --- Modify the standard inductor inherent capacitance measurement method. This version of the previous version of the release. --- JJG 726-1991. Standard inductor test procedures

1 Scope

This standard applies to the inductor range 1μH ~ 10000H, the frequency range of 20Hz ~ 100kHz standard inductor The first test, follow-up test and use of inspection.

2 reference documents

The procedures cited in the following documents. JJF1023-1991 Commonly used terms of electrical measurement (Trial) JJF1094-2002 Measurement instrument characterization GB/T 8554-1998 Transformers and inductors for use in electronic and telecommunication equipment - Measurement methods and test procedures For dated references, only the dated version applies to this edition; any undated reference The latest version (including all amendments) applies to this procedure.

3 Terms and measurement units

3.1 Inductance inductance Circuit that describes the induced electromotive force effects in this coil or in another due to changes in coil current parameter. In the SI SI, the unit of inductance is Henry H. Note. There are commonly used inductive units micro-Henry [Lee] μH and mill Heng [Lee] mH. 3.2 quality factor qualityfactor The ratio of energy stored in a given winding to energy dissipated in a given cycle at a given frequency. Quality factor Often, the ratio of reactive components to dissipative resistive components (equivalent to series or parallel models), also known as Q or Q Factor.

4 Overview

Standard inductor is the verification of all levels of inductance measuring instruments in kind. Standard inductors according to different structures can be divided into wire wound standard inductors, network analog standard inductors and electronic Standard inductor. Standard inductors according to the measuring terminal leads to different ways, can be divided into the end button type (two ends, three ends) and End-to-end (two-end, four-end pair) standard inductors. Some standard inductors use "incremental inductance" to define the standard inductance, which is before and after the inductor is connected to the special short circuit The difference between the end-to-end inductor value and the end-to-end inductance of the inductor is measured before and after zero reading. Commonly used standard inductors for wire wound inductors, according to the structure can be divided into solenoid type and bracelet ring inductors. Its structure Schematic shown in Figure 1. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 726-2017_English be delivered?

Answer: Upon your order, we will start to translate JJG 726-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 726-2017_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 726-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 726-2017?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 726-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.