Pour point value required by transformer oil (insulation oil) standard and pour point detection method
Transformer oil pour point (insulating oil) is a very important indicator, for cold climate, low pour point of special significance, because low pour point can guarantee transformer oil in the climate conditions in circulation, thus its insulation and cooling effect, especially for circuit breaker as the movement of the actuator, it is very good.
25 transformer oil pour point is not higher than -22℃, flash point is not less than 140℃; Suitable for transformers below 330kV (including 330KV) and electrical equipment with similar requirements. Standard Number: GB2536-2011.
According to the standard requirements of GB2536 "Unused mineral insulating Oil for Electrical fluid Transformers and switches", the pour point detection method adopts GB/T3535 standard to conduct experiments. SH113C automatic pour point tester is designed and manufactured by Shandong Shengtai Instrument Co., Ltd. in accordance with this standard. SH113C automatic dump point tester conforms to GB/T3535 national standard requirements, ASTM D97 adopts a number of microcontroller main control parts, automatic refrigeration, automatic temperature, automatic detection, and automatic print output results. Adopt two-stage refrigeration system, make the refrigeration range of +30℃ ~ -70℃, adapt to pour point/freezing point higher than -35℃ sample detection, because of the use of Germany Danfoss imported compressor to make long-term stable and reliable, not easy to damage. The dry well cold bath box is used, which is easy to use and maintain, with small hysteresis and fast cooling, without other cooling medium. Adopting high performance infrared detection technology, high detection sensitivity and reliability.