The measurement method of Horizontal Burning/Flammability Tester for electric wires and cables
The Horizontal Burning/Flammability Tester for electric wires and cables is composed of two parts, the control cabinet and the combustion chamber, the main function of the combustion chamber is to generate the standard flame required for the test, as well as temperature measurement, time measurement, space to accommodate the burning of flame retardant cables, etc., while the control cabinet is a device that generates a current Rated current of more than 5 times a current device. Next, I will talk to you about the Horizontal Burning/Flammability Tester, the method of measuring the working current, temperature meter and time parameters.
When the Horizontal Burning/Flammability Tester measures the working current, the corresponding cable can be selected according to the range to be detected, and then the cable will be passed through the transformer of the Horizontal Burning/Flammability Tester, and then it will be connected to the control box in the Then connect the transformer to the standard instrument of Horizontal Burning/Flammability Tester, and then check the output range of the cable to select 5 points evenly. The current is then slowly raised to the detected position and the corresponding number is read out. The detected value minus the standard value is the difference of the output current, and the allowed error of the test cable can reach 5%.
In the process of using the Horizontal Burning/Flammability Tester to measure the current, it should be noted that when the large range is measured, as the value of the current passing through is relatively large, it requires that the cable and its joints must be connected reliably, in the process of raising the current to observe the joints, if it emits light or smoke, it is necessary to stop immediately. Experiment to check the connected parts.
Use Horizontal Burning/Flammability Tester to measure the temperature using the secondary instrument standard site, in accordance with the relevant calibration procedures for temperature measurement has been tested, the thermocouple will be removed from the device, and then use the thermocouple calibration device for identification, the temperature range of its calibration within 0 ~ 300 ℃.
The timing device on the Horizontal Burning/Flammability Tester and the electronic stopwatch will be timed at the same time, and the time will end at the same time, and the timing measurement points can be chosen from 20 minutes, 10 minutes and 5 minutes, and each point needs to be measured three times, and then according to the measured results, the time set by the timing device will be subtracted from the electronic stopwatch. Then, according to the results of the measurement, the time set by the timing device minus the time measured by the electronic stopwatch is the time measurement error, the time measurement error can be allowed within two seconds.
When the use of Horizontal Burning/Flammability Tester calibration of the cable is complete, you can fill in the data in accordance with the calibration, the cable testing cycle can be in accordance with the actual use of the user to decide for themselves, generally every other year to test the cable, in order to well protect the safety of the product.
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