ASTM D5423电绝缘评定用实验室强制对流炉标准规范

ASTM D5423 Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
ASTM D5423电绝缘评定用实验室强制对流炉标准规范

This specification covers forced-convection ventilated electrically-heated ovens and used for thermal endurance evaluation of electrical insulating materials. The ovens shall be classified according to ventilations: Type I and Type II. Rate of ventilation, set temperature, temperature variation, and thermal log time properties shall be determined using specified test methods.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope
1.1 This specification covers forced-convection ventilated electrically-heated ovens, operating over all or part of the temperature range from 20C above the ambient temperature to 500C, and used for thermal endurance evaluation of electrical insulating materials.

1.2 The specification requirements for Type I ovens are based on IEC Publication 216-4-1, and are technically identical to it. The requirements for Type II ovens are essentially identical to the requirements of Specification D 2436. This specification and an associated test method, D5374, have replaced Specification D 2436.

1.3 While the ovens covered by this specification are intended primarily for thermal endurance evaluation, they can also be used wherever their characteristics make them suitable for other applications.

1.4 This specification does not address safety aspects. If it is anticipated that oven contents or the location in which the oven is to be installed may create a hazard, the purchaser should determine and specify what additional requirements are needed.

2. Referenced Documents (purchase separately)
ASTM Standards
ASTM D2436 Specification for Forced-Convection Laboratory Ovens for Electrical Insulation
ASTM D5374 Test Methods for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation

Other Document
IECPublication216-4- Guide for the Determination of Thermal Endurance Properties of Electrical Insulating Materials, Part 4--Aging Ovens, Section --Single-Chamber Ovens

Index Terms
forced-convection; ovens; set temperature; temperature fluctuation; temperature gradient; thermal endurance evaluation; thermal lag time; ventilated; ventilation rate.

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 来源：防火网　发布时间：11/6/2013 点击次数：1775