JB/T 4088.1-2022 PDF English
Price & Delivery
US$705.00 · In stock · Download in 9 secondsJB/T 4088.1-2022: Daily-use metallic tube electric heating elements - Part 1: General requirements
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid
JB/T 4088.1: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| JB/T 4088.1-2022 | 705 | Add to Cart | Auto, 9 seconds. | Daily-use metallic tube electric heating elements - Part 1: General requirements | Valid |
| JB/T 4088-2012 | 719 | Add to Cart | 4 days | Daily-use metallic tube electric heating elements | Obsolete |
| JB/T 4088-1999 | 479 | Add to Cart | 4 days | Daily-use metallic tube electric heating elements | Obsolete |
| JB 4088-1985 | RFQ | ASK | 3 days | (Chinese Industry Standard) | Obsolete |
Click to Preview this PDF
Similar standards
JB/T 4088.1-2022: Daily-use metallic tube electric heating elements - Part 1: General requirements
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JBT4088.1-2022JB MECHANICAL INDUSTRY STANDARD ICS 97.120 CCS Y 10 Replacing JB/T 4088-2012 Daily-use metallic tube electric heating elements - Part 1. General requirements Issued on: SEPTEMBER 30, 2022 Implemented on: APRIL 01, 2023 Issued by. Ministry of Industry and Information Technology of the People's Republic of China
Table of Contents
Foreword... 4 Introduction... 6 1 Scope... 8 2 Normative references... 8 3 Terms and definitions... 8 4 Classification, technical parameters and model naming... 11 4.1 Classification... 11 4.2 Technical parameters... 12 4.3 Model naming... 13 5 Technical requirements... 13 5.1 Basic requirements... 13 5.2 Information required from the manufacturer... 13 5.3 Safety requirements... 14 5.4 Hygiene requirements... 16 5.5 Requirements for limits of hazardous substances... 16 5.6 Performance requirements... 16 6 Test methods... 19 6.1 General test methods... 19 6.2 Measurement of rated power... 20 6.3 Leakage current measurement... 20 6.4 Electrical strength test... 20 6.5 Insulation resistance test... 21 6.6 Overload capacity test... 21 6.7 Sealing test... 21 6.8 Measurement of element lead-out rod length... 22 6.9 Tube body temperature measurement... 22 6.10 Hydrostatic test... 22 6.11 Tensile test... 22 6.12 Operation life test... 22 6.13 Anti-dry-heating test... 23 6.14 Flame resistance test of sealing materials... 23 7 Inspection rules... 23 7.1 Inspection classification... 23 7.2 Exit-factory inspection... 23 7.3 Type inspection... 24 7.4 Situations where coverage testing is permitted... 26 7.5 Others... 27 8 Marks, packaging, transportation and storage... 27 8.1 Product marks... 27 Daily-use metallic tube electric heating elements -- Part 1. General requirements1 Scope
This Document specifies the terms and definitions, classification, technical parameters, model naming, technical requirements, test methods, inspection rules, as well as marks, packaging, transportation and storage for daily-use metallic tube electric heating elements. This Document applies to the manufacture of daily-use metallic tube electric heating elements installed in household appliances, with a rated voltage not exceeding 480 V and a single tube rated power not exceeding 9000 W.2 Normative references
The following referenced documents are indispensable for the application of this Document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1804-2000, General Tolerances -- Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications GB 4706.1-2005, Household and Similar Electrical Appliances -- Safety -- Part 1. General Requirements GB 4706.12-2006, Safety of household and similar electrical appliances -- Particular requirements for storage water heaters GB/T 17196-2017, Connecting devices -- Flat quick-connect terminations for electrical copper conductors -- Safety requirements JB/T 12719-2016, Test method of accelerated life of daily-use metallic tube electric heating elements3 Terms and definitions
For the purposes of this Document, the following terms and definitions apply. 3.1 daily-use metallic tube electric heating element 3.18 electrician magnesium oxide Magnesium oxide blocks, after being crushed and mixed in a certain proportion with different particle sizes (mesh count), are used directly or after modification in elements as an insulating medium for heat conduction at high temperatures. hereinafter referred to as "magnesium oxide". 3.19 flow rate The time required for 100 g of magnesium oxide to pass naturally through the orifice of a standard funnel. The unit is seconds per 100 grams (s/100 g).4 Classification, technical parameters and model naming
4.1 Classification 4.1.1 Classification by characteristics of the heating medium 4.1.1.1 Used for heating liquids The effective heating surface of the element is directly immersed in the liquid, and is in direct and/or through fins contact with the liquid. During normal operation, the liquid is the primary heating medium. The liquid medium can be still or flowing water, aqueous solution, ethanol, edible or non-edible oil, etc. 4.1.1.2 Used for heating gas The element is in direct and/or through fins contact with the gas. During normal operation, the gas is the primary heating medium. The gaseous medium is stationary or flowing air or other gases. 4.1.1.3 Used for heating metal The element is cast, embedded, or pressed into a metal material, with the heating surface in full or partial contact with the metal material. During normal operation, the metal material is the primary heating medium, used to heat liquids and/or solids but without direct contact with the liquids and/or solids. The metallic medium is made of metals such as aluminum, copper, and steel. 4.1.1.4 Used for heating other substances The element is used for heating other substances. 4.1.2 Classification by the cross-sectional shape of the external nozzle 4.1.2.1 The cross-section is circular. 4.1.2.2 The cross-section is irregular (rectangular, triangular, or other non-circular cross-sections). 4.2 Technical parameters 4.2.1 Main technical parameters and units involved in the elements. a) Power supply voltage, in volts (V); b) Power supply frequency, in hertz (Hz); c) Rated voltage, in volts (V); d) Rated power, in watts (W); e) Working temperature, in kJ (K) or degrees Celsius (°C); f) Outer diameter, in millimeters (mm); g) Unfolding length, in millimeters (mm); h) External dimensions, in millimeters (mm); l) Mass, in kilograms (kg); j) Heating medium; k) Water pressure (if applicable), in megapascals (MPa). 4.2.2 Calculation methods for some technical parameters. a) Surface effective load. in watts per square centimeter (W/cm²). Formula for calculating the surface effective load. Surface effective load = power value of the element / effective heating surface area of the element b) Equivalent resistance. in ohms (Ω). Formula for calculating the equivalent resistance. Where, R(T) - Equivalent resistance of the element at working temperature T, in ohms (Ω); R0 - Cold resistance of the element, in ohms (Ω); α - Temperature coefficient of resistance, in Kelvin (K-1); T - Working temperature of the element, in Kelvin (K); T0 - Temperature of the element in its cold state, in Kelvin (K). 4.3 Model naming Element model naming shall preferably follow the rules specified in Annex A. It may be named by the manufacturer. Self-named model shall, as far as possible, reflect the uniqueness of the element's electrical, mechanical characteristics, dimensions, and function.5 Technical requirements
5.1 Basic requirements 5.1.1 Elements shall conform to the requirements of this Document and be manufactured in accordance with drawings and technical documents approved through the prescribed procedures. NOTE. The typical structure of the element is shown in Annex B. 5.1.2 The element shall function normally under the following conditions. a) The relative humidity of the surrounding air is not greater than 90% (at a temperature of 25°C); b) There is no obvious impact or vibration. 5.2 Information required from the manufacturer The information required for the elements to be tested in this Document includes, but is not limited to, the specifications in Table 1. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
