The closed flash point tester under UHV power can help many power workers conduct various power tests more conveniently.

Definition and quality indicators

Test the insulation oil to be heated under specified conditions until the oil vapor and air mix. The minimum temperature at which flash occurs when in contact with flames is one of the main safety monitoring indicators. Those with unqualified flash points are not allowed to purchase new insulation oil.

Standard: Before operation, the temperature should be ≥ 135 ℃ during operation.

Cycle: Before commissioning, during operation, and when necessary

Method name and testing equipment: Flash point determination closed cup method, equipment HTYBS-H closed flash point tester

Method summary: Heat the sample at a very slow constant speed while continuously stirring, and introduce a small flame into the cup within the specified temperature range. The lowest temperature at which the sample flame causes the vapor on the sample to flash is the closed flash point.

Preventive measures:

1. The sample size in the oil cup should be precise to the marked line

2. The size of the flame used for ignition should be strictly controlled

3. Strictly control the heating speed, not too fast or too slow

What is the significance of testing flash point?

1. The degree of distillate composition can be determined from the flash point of insulating oil

2. The fire hazard of insulating oil can be verified by its flash point

3. Can prevent or detect the mixing of insulating oil with light fractions, ensuring the safety of oil filling equipment

4. Determine various fire prevention measures for transportation, storage, and use based on the flash point.

What should be noted when determining the flash point of insulating oil?

1. Pay attention to the amount of insulation oil added to the circuit

2. It should be noted that the flame size used for ignition should be appropriate

3. Pay attention to the height of the flame from the page and the time it stays on the page

4. It should be noted that the heating rate should be strictly controlled

5. If the test oil contains moisture, dehydration must be performed before measurement.