ASTM D5374电绝缘评定用实验室强制对流炉标准试验方法

ASTM D5374 Standard Test Methods for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
ASTM D5374电绝缘评定用实验室强制对流炉标准试验方法

It is essential that ovens used for thermal evaluation of insulating materials be capable of maintaining uniform conditions of temperature and air circulation over the extended periods of time that are required for conducting these tests. Specification D 5423 specifies the permissible deviations from absolute uniformity that have been generally accepted internationally for these ovens. These test methods include procedures for measuring these deviations and other specified characteristics of the ovens.

1. Scope
1.1 These test methods cover procedures for evaluating the characteristics of 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 These test methods are based on IEC Publication 216-4-1, and are technically identical to it. This compilation of test methods and an associated specification, D 5423, have replaced Specification D 2436.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately)
ASTM Standards
ASTM D2436 Specification for Forced-Convection Laboratory Ovens for Electrical Insulation
ASTM D5423 Specification 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 1--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：2317