SU871048A1 - Method of determination of electric cable combustibility - Google Patents
Method of determination of electric cable combustibility Download PDFInfo
- Publication number
- SU871048A1 SU871048A1 SU792849851A SU2849851A SU871048A1 SU 871048 A1 SU871048 A1 SU 871048A1 SU 792849851 A SU792849851 A SU 792849851A SU 2849851 A SU2849851 A SU 2849851A SU 871048 A1 SU871048 A1 SU 871048A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- combustibility
- chamber
- determination
- electric cable
- heat
- Prior art date
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
1one
Изобретение относитс к способам испытаний кабельных изделий.This invention relates to methods for testing cable products.
Известен способ определени горю-чести электрических кабелей tO, заключающийс в размещении образца в камере с подводом к образцу тепла в течение установленного времени. После прекращени воздействи тепла о горючести образца суд т по длине обгоревшего участка.There is a known method for determining the comfort of electrical cables tO, which consists in placing a sample in a chamber with heat applied to the sample for a specified time. After the cessation of heat exposure, the sample is judged by the length of the burned area.
Однако этот метод не позвол ет количественно оценить горючесть кабелей , так как он не обеспечивает хорошей воспроизводимости результатов и дает только качественную оценку.However, this method does not allow to quantify the flammability of cables, since it does not provide good reproducibility of results and provides only a qualitative assessment.
Известен также способ определений горючести электрических кабелей,заключгиощийс в размещении в камере эталона с подводом в камеру тепла, обеспечивающего в ней заданный температурный режим с последующим помещением в указанную камеру образца и подведением в камеру тепла идентично подведению тепла в кгииеру с помещенным в ней эталоном, с замером суммарного количества тепла в камере и определением степени горючести по соотношению выделившегос количества теппа к подводимому 2.There is also known a method for determining the flammability of electrical cables, consisting in placing a reference in the chamber with heat applied to the chamber, providing a specified temperature in it, then placing the sample into the specified chamber and introducing heat into the chamber is identical to applying heat to the reference. measuring the total amount of heat in the chamber and determining the degree of flammability by the ratio of the released amount of tepp to the input 2.
Однако при таком способе не учитываютс реальные услови развити пожара в кабельных сооружени х,что не дает возможности оценить горючесть кабелей различного конструктивного исполнени и приводит к большому разбросу экспериментальных данных.However, this method does not take into account the actual conditions of fire in cable structures, which makes it impossible to estimate the flammability of cables of various designs and leads to a large variation of experimental data.
Цель изобретени - повышение точности результатов испытаний.The purpose of the invention is to improve the accuracy of the test results.
toto
Дл достижени этого в камере создают температурный режим по закону стандартного пожара :To achieve this, the chamber creates a temperature regime according to the law of standard fire:
Т .Ь5T.5
1515
С,WITH,
где Т - температура в камере,where T is the temperature in the chamber
IT - врем , с,IT - time,
при этом фиксируют врем до достижени максимума температуры в камере при горении образца, а о горючести ;. суд т по соотношению количества тепла , выделившегос при горении образца за врем от начала испытаний до достижени максимума температуры, и подведенного за этот перлод тепла.at the same time, the time is fixed until the maximum temperature in the chamber is reached during the combustion of the sample, but about flammability;. It is judged by the ratio of the amount of heat released during the combustion of the sample from the time the test starts to the maximum temperature reached and the heat supplied to this perlodlod.
2525
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792849851A SU871048A1 (en) | 1979-12-21 | 1979-12-21 | Method of determination of electric cable combustibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792849851A SU871048A1 (en) | 1979-12-21 | 1979-12-21 | Method of determination of electric cable combustibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU871048A1 true SU871048A1 (en) | 1981-10-07 |
Family
ID=20863683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792849851A SU871048A1 (en) | 1979-12-21 | 1979-12-21 | Method of determination of electric cable combustibility |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU871048A1 (en) |
-
1979
- 1979-12-21 SU SU792849851A patent/SU871048A1/en active
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