Corona discharge tester
XT-350
PB39b

Spark discharge and corona discharge

Spark discharge (Flashover) consumes high energy with light and sound, so its product obviously malfunctions.
Corona Discharge (Corona Discharge) is generated by ionization of air, it is a weak pulse, so the operation of the product is not abnormal and it is not easy to detect.
However, since ozone (O3) generated by corona discharge has a strong oxidizing power, deterioration of insulation is caused in the long term and it contains the danger of causing spark discharge, so it is desirable to take countermeasures.
XT-350 PB 39b checks the presence or absence of corona discharge, spark discharge generated by application of high voltage, and displays corona discharge, spark discharge as discharge rate when it detects it.

Operation explanation

XT – 350 PB 39 b wa toransu no makisen to koa-kan, 2-ji-gawa makisen-nai, 1-ji to 2-ji-gawa-kan no korona hōden taiden-atsu o shiken suru koto o hajime, ko yōryō kondensa, mōta-tō arayuru mono no zetsuen o korona hōden no genshō o riyō shite shiken shimasu. XT – 350 PB 39 b wa HV (kō den’atsu shutsuryoku) tanshi ni nin’i no shūhasū (10 k ~ 100 kHz) de nin’i no den’atsu (0 ~ 10 kVrms, yō chūningu) o hassei shi, hi shiken-mono ni chokusetsu inka shite, hi shiken-mono no korona hōden hibana hōden no umu o shiken shimasu. Ima made kenshutsu ga kon’nandeatta korona hōden o seikaku ni kenshutsu dekimasunode, seihin no shinrai-sei kōjō ni o yakudate itadakeru to omoimasu. Kō den’atsu no kyūden kairo no naka ni korona hōden ga aru to kikendesu. Kore ni shiyō sa reru buhin o XT – 350 PB 39 b de kensa suru koto de seihin no shinrai-sei ga takamarimasu. Tatoeba konekuta ya purinto kiban no kō den’atsu patān to shashi-kan no korona hōden taiatsu nado, imamade fukanōdeatta zetsuen shiken ga dekiru yō ni narimashita. Kō den’atsu kondensa hajime hi shiken-mono no yōryō fuka ni taishite shiken kairo no inpīdansu o henkō dekiru yō ni chūningu kikō o sonaemashita.
XT – 350 PB 39 b is used to test the corona discharge withstanding voltage between the transformer winding and the core, in the secondary winding, between the primary and secondary side, insulation of small objects such as capacitors and motors We will test using phenomenon of corona discharge.
The XT – 350 PB 39 b generates an arbitrary voltage (0 to 10 kVrms, necessary tuning) at an arbitrary frequency (10 k to 100 kHz) to the HV (high voltage output) terminal and applies it directly to the DUT, Test for corona discharge · spark discharge.
Corona discharge which was difficult to detect up to now can be accurately detected, so I think that you can use it to improve the reliability of the product.

It is dangerous to have a corona discharge in the high voltage feed circuit.
By inspecting the parts used for this with the XT – 350 PB 39 b, the reliability of the product will be enhanced.
For example, it has become possible to perform insulation tests that have been impossible up to now, such as corona discharge withstand voltage between high voltage patterns of connectors and printed circuit boards and chassis.
A tuning mechanism was provided to change the impedance of the test circuit against the capacitive load of the high-voltage capacitor or the object under test.

specification

Corona discharge tester
XT-350 PB39b

Test frequency/
10 kHz to 100 kHz Selectable at 1 kHz steps
Maximum test voltage/
10 kVrms (Tuning minimizes drive current)
Test voltage application method/
continuous sine wave application
Load impedance/
inductance is 300 mH or more, Capacity is 1,000 pF or less
However, the testable voltage depends on the test frequency.
Spark discharge measurement/
counting the number of spark discharges 0 to 255 display
Corona discharge measurement/
The number of corona discharges is indicated by discharge rate (0 to 100%)
Measurement timer/
0 to 99.9 seconds (0 seconds is infinite)
Waveform monitor terminal /
high voltage waveform, spark discharge waveform, drive voltage waveform, corona discharge waveform, synchronization signal
Dimensions/
Body 430 (W) x 470 (D) x 180 (H) mm
Probe box PB 39 b 430 (W) × 470 (D) × 180 (H) mm
Mass/
body 16 kg Probe box PB 39 b 13 kg
Power consumption/
800 VA
Explanation of discharge rate/
discharge rate indication