Overview
The Leakage Trace Tester (Model ASR-4327) uses rectangular platinum Electrode, and the force of the two poles on the sample is 1.0N +/- 0.05N respectively. The applied voltage is adjustable between 100~ 600V (48~ 60Hz), and the voltage drop should not exceed 10% when the short-circuit current is 1.0 +/- 0.1A. When the short-circuit leakage current in the test circuit is equal to or greater than 0.5A, the time is maintained for 2 seconds, and the relay operates to cut off the current, indicating that the specimen is unqualified. The time constant of the dripping device is adjustable, and the dripping volume is precisely controlled from 44 to 50 drops/cm ³ and the dripping time interval is 30 +/- 5 seconds.
Features
1. Using rectangular platinum Electrode, the edge of one end of the Electrode is 30 ° inclined, and the cross-sectional area is 2 × 5mm.
2. Electrode on the sample force is accurate, 1.0 +/- 0.05N.
3. The test voltage range is wide and can be adjusted between 100 and 600V.
4. With overcurrent protection function, when the short-circuit leakage current is ≥ 0.5A and maintained for 2 seconds, the relay automatically cuts off the current and indicates failure.
5. The dripping device is adjustable, which can precisely control the dripping volume (44~ 50 drops/cm ³) and the dripping time interval (30 +/- 5 seconds).
6. The test chamber is made of electrostatic paint and mirror stainless steel, and the volume is 0.5m.
Principle
The instrument applies an adjustable voltage between two rectangular platinum Electrodes with a distance of 4.0mm, and the Electrode acts on the surface of the sample at a specific pressure. At the same time, the droplet device drops electrolysis liquid between the Electrodes at a set interval and the droplet size. When the surface of the sample forms a conductive path due to the action of the electrolysis liquid and the electric field, the leakage current increases. If the short-circuit leakage current reaches or exceeds 0.5A and lasts for 2 seconds, the relay acts to automatically cut off the test current and determine that the sample is unqualified.
Steps
1. Place the sample in the test chamber, adjust the distance between the two Electrodes to 4.0mm, and ensure that the Electrode applies a force of 1.0 +/- 0.05N to the sample.
2. According to the test requirements, set the test voltage within the range of 100 to 600 volts.
3. Set the dripping time interval and dripping volume of the dripping device (44 to 50 drops/cm ³).
4. Start the test, and the dripping device starts dripping at set intervals while applying a voltage.
5. Observe the test process. If the short-circuit leakage current in the circuit is greater than or equal to 0.5A and is maintained for 2 seconds, the instrument will automatically cut off the current and indicate that the specimen fails.
6. After the test, record the results and clean the test chamber.
Notice
• Before the test, please ensure that the Electrode is clean, the spacing is accurate, and the force meets the requirements.
• Please set the test voltage, drop interval and drop volume correctly according to the standard or test requirements.
• During the test, pay attention to observe the current change and the indicated state of the instrument.
• When the instrument cuts off the current due to overcurrent protection, it indicates that the specimen is unqualified and the result needs to be recorded.
• After the test, the test chamber and Electrode should be cleaned in time to keep the equipment clean.
Operators need to have relevant electrical safety knowledge and pay attention to high voltage electrical hazards.
