Comprehensive test and measurement service provider-Shenzhen Weike Electronic Technology Co.
Chroma 19501-K partial discharge tester built-in AC withstand voltage test (Hipot Test) and partial discharge (Partial Discharge, PD) detection function in a single machine to provide AC voltage output 0.1kV ~ 10kV, leakage current measurement range of 0.01μ A ~ 300μA, partial discharge detection range of 1pC ~ 2000pC. 2000pC, designed and developed for high-voltage semiconductor components and high-insulation material testing applications.
Chroma 19501-K Partial Discharge Tester is designed to comply with IEC60270-1 regulations, for high voltage test technology for partial discharge test requirements, using Narrowband measurement technology for PD discharge measurement, and the measurement results will be visualized as a numerical value (pC) displayed on the screen so that users can clearly understand the test results of the object to be tested. The results are visualized on the screen so that the user can clearly understand the results of the test.
The product design not only complies with IEC60270-1, but also meets the requirements of IEC60747-5-5 and VDE0884 regulations for optocouplers. The built-in test method of IEC60747-5-5 is included in the instrument, which meets the needs of optocoupler production testing and provides users with a user-friendly operation interface.
When performing high voltage test on production line, if the object to be tested is not properly and well connected to the test line, it will lead to failure of the test result or even the risk of leakage, so it is very important to ensure that the object to be tested is well connected to the test line before the test. Chroma's unique High Voltage Contact Check (HVCC) function utilizes the Kelvin test method for components with high isolation capability to conduct contact check at the same time as the high voltage output, which increases the effectiveness of the test and production efficiency.
When solid insulators contain air gaps or impurities mixed in the insulating layer, under rated high voltage condition, partial discharge (Partial Discharge) occurs due to the high electric field strength concentrated in the air gaps, and the persistent partial discharge will deteriorate the surrounding insulating materials for a long time, which affects the long term trustworthiness of the electrical products, and causes safety accidents.
Applied to the power supply system safety components, such as optocouplers, due to the consideration that if the components occur for a long time partial discharge for the destruction of the insulation material, and the occurrence of insulation failure, which in turn led to the user's personal safety problems; therefore, in the IEC60747-5-5 regulations mentioned in the production process (Routine test) must be 100% execution of partial discharge ( Therefore, as mentioned in the IEC60747-5-5 regulation, during the production process (Routine test), 100% must be used for Partial Discharge (PD) detection, and the amount of PD must not be more than 5pC under the condition of the maximum insulating voltage, so as to ensure that PD will not occur in the normal working environment.
Partial discharge testers are mainly used for high voltage optocouplers, high voltage relays and high voltage switches and other components with high insulation resistance to provide high voltage withstand voltage testing and partial discharge detection to ensure product quality and improve product reliability.
Localized discharge means that the discharge occurs in the local area of the insulating object, and does not form a fixed channel discharge between the two electrodes is called localized discharge.
The Partial Discharge Tester applies a voltage under specific conditions to the object to be tested and measures its apparent discharge charge (PD), in addition to verifying its ability to withstand instantaneous high voltages (Hipot Test), and also verifying the integrity of the insulation at the rated operating voltage. Partial discharge test can detect the existence of abnormal air gaps in the object to be tested, by applying a partial discharge charge test slightly higher than the maximum rated operating voltage of the component, used to check the long term reliability of the electrical components under normal operating voltage conditions, but in actual production of the insulating material inside the insulating material of course, it is not possible to be 100% free of air gaps exist within the insulating material, so in the IEC 60747-5-5 Optocoupler Regulations Therefore, in the IEC60747-5-5 optocoupler regulation, the partial discharge test defines that the discharge charge must not be greater than 5pC (q).pd= 5pC).
Partial discharge due to the presence of air bubbles within the insulating solids Description
- The dielectric coefficient of air is lower than the dielectric coefficient of the insulating material, so the electric field strength at the air bubbles will be greater than the partial pressure of normal insulation.
- The electric field strength that air can withstand is lower than that of the insulating material, so it is easy to generate a bubble discharge at the bubble (Void Discharge).
Ca: equivalent capacitance of the rest of the insulating medium
Cc: air gap equivalent capacitance
Cb: Equivalent capacitance of the insulating medium in series with the part of the air gap
| model number | relate (a story or information) |
| 19501-K | Partial Discharge Tester |
| A195001 | PD Corrector |
| B195000 | electromagnetic shield |
| B195001 | High Voltage Connection Adapter |
| B195002 | DIP Test Fixture |
