The importance of BS 60811-3-2 standard wire and cable thermal stability test
Wire and cable testing has always been an important part of the national standard wire and cable inside, a wire and cable enterprise internal quality inspection department the more advanced, then, the enterprise produced wire and cable quality is better, the more trustworthy. The more stringent the third-party quality inspection department, the more favourable to the development of the industry.
Thermal stability test is a cable heated by the current at the same time also bear a certain voltage, after a certain period of heating, the determination of certain sensitive performance parameters to assess the stability of the insulation. Insulation stability test is divided into long-term stability test or short-term accelerated aging test two.
According to BS 60811-3-2, the weightlessness test method and the thermal stability test method for polymer insulation and sheathing materials of cables and fibre optic cables for power distribution and communications, including marine and offshore cables and fibre optic cables.
Article 9 for insulation and jacket thermal stability test, requires a length of 110mm, outer diameter of about 5mm, inner diameter of (4.0 ± 0.5) mm of one end of the sealed (such as by fusion method) of the glass tube, using the standard requirements of the glass tube; and with a pH value in the range of 1 ~ 10 of the universal test paper; the use of controllable temperature under the heater, through the standard test temperature to carry out the Test. Only in the three specimens should not be less than the average value of the thermal stability time of the cable product standards can be judged as the test pass.
SH9318 Wire and Cable Thermal Stability Tester is designed and manufactured according to the requirements of BS 60811-3-2, Article 9, Thermal Stability Test, and is used for the thermal stability test of wire and cable with PVC insulation and sheath at 200℃. The high temperature oil tank for this tester is optional.
Technical parameters:
1、power supply: AC 220V, 50Hz
2、Glass tube inner diameter: 4mm, length 110mm.
3、the number of workstations: 3 workstations (optional 6 workstations).
4、High temperature oil tank technology:
a) Power supply: AC 220V, 50Hz;
b) Temperature accuracy: ±1℃;
c) Temperature control range: RT +10 ~ 250 ℃;
d) Oil tank volume: not less than 3000ml (oil tank is optional);
e) PID temperature control;
f) the number of openings in the oil tank cover: 4-6 (can be customised to open the number of holes)
Through the thermal stability test, the thermal stability performance of wire and cable can be assessed, and provide reference for the design and production of wire and cable to ensure the safety, reliability and long-term stability of wire and cable operation in high temperature environment.
