Noise-Resistant PD Testing for Enhanced Motor Quality
The ST4200 Partial Discharge Detector provides comprehensive partial discharge (PD) detection capabilities. It also enables seamless system integration for motor production testing when paired with the SW2001 High Voltage Multiplexer. Furthermore, the ST4200's PD detection uses high-frequency CTs, which mitigate noise interference common to production lines. Such noise on production lines makes PD detection using a microwave antenna often difficult, and at times, nearly impossible.
Why partial discharge testing is crucial for your EV motor
EV motors face unique challenges due to the high-voltage, high-speed switching of power semiconductors such as SiC and GaN. This causes severe inverter surge noise, putting immense stress on the motor's insulation. Traditional tests such as insulation resistance and hipot tests, might miss subtle issues.
HIOKI PARTIAL DISCHARGE DETECTOR ST4200 Price in Bangladesh offers advanced insulation diagnostics for high-voltage equipment. Ideal for predictive maintenance, it ensures accuracy, safety, and reliability in various industrial applications. Get the best deal and reliable performance with the HIOKI PARTIAL DISCHARGE DETECTOR ST4200 Price in Bangladesh.
Key Features
- Dual-mode PD detection: AC PD and surge PD detection
- Noise-resistance through high-frequency CT
- Compatible with the SW2001 High Voltage Multiplexer
AC PD measurement
| Detection method |
Discharge charge-quantity measurement method using detected impedance and a band-pass filter in compliance with IEC 60270 and IEC 60034-27-1 |
Test frequency range
(applied voltage) |
45 Hz to 1.1 kHz |
| Charge quantity measurement range |
10 pC ≤ Q ≤ 500 pC (test piece capacitance C: 200 pF ≤ C < 2 nF)
10 pC ≤ Q ≤ 2500 pC (test piece capacitance C: 2 nF ≤ C ≤ 10 nF) |
| Measurement parameters |
[Normal mode]
Maximum repeating PD strength (Q max), PD pulse count (m, m+, m-), PD pulse incidence (n), voltage RMS value (U rms), voltage crest value (Up+, Up-), average discharge current (I), discharge power (P), second-order rate (D), PD pulse apparent charge (q), PD pulse phase angle (φ)
[PDIV mode] (normal mode parameters plus the following)
PD inception voltage (Ui), PD extinction voltage (Ue) |
Impulse PD (surge PD) measurement
| Detection method |
Discharge current detection using a CT and digital filter in compliance with IEC 61934 Edition 2.0 and IEC 60034-27-5 |
| Sampling rate |
200 MS/s |
| Measurement parameters |
[Normal mode]
PD peak discharge magnitude (Qpk), pulse sequence PD count (m)
[PDIV mode] (normal mode parameters plus the following)
PD inception voltage (PDIV), repetitive PD inception voltage (RPDIV), repetitive PD extinction voltage (RPDEV), PD extinction voltage (PDEV), repeating PD peak discharge magnitude (RQpk) |
High-voltage source control
| Control description |
Cooperative control of withstanding voltage tester and impulse winding tester used as high-voltage generators for partial discharge testing |
| Compatible instruments (as of Feb. 2025) |
Automatic Insulation/Withstanding HiTester 3153, Impulse Winding Tester ST4030A, etc |
Specifications shared by AC PD and impulse PD (surge PD) measurement
| Functions |
Graph display function, judgment function |
| Save destination |
SD memory card, USB drive, SSD
(Use only storage media sold by Hioki.) |
| Effects of radiative radio frequency electromagnetic fields |
50 pC or less (at 10 V/m) |
| Effects of conductive radio frequency electromagnetic fields |
50 pC or less (at 10 V) |
| Effects of pulse noise superposed on power supply |
50 pC or less (with pulse noise of 1 kV and pulse width of 50 ns) |
| Interfaces |
LAN, USB, RS-232C* (please use a commercially available USB-serial conversion cable.), monitor output, EXT. I/O (measurement start, measurement cancel, overall judgment PASS, overall judgment FAIL)
*For connecting to secondary instruments (e.g., Automatic Insulation/Withstanding HiTester 3153) |
| Power supply |
Rated supply voltage: 100 to 240 V AC; rated power: 300 VA |
| External dimensions |
Approx. 353 mm (13.9 in.) W × 235 mm (9.25 in.) H × 154.8 mm (6.09 in.) D (excluding protruding parts) |
| Mass |
Approx. 7.3 kg (257.5 oz.) (with U8332); approx. 7.1 kg (250.4 oz.) (without U8332) |
| Included accessories |
Power cord × 1, operating precautions × 1, startup guide × 1 |
| Included accessories |
Power cord × 1, operating precautions × 1, startup guide × 1 |
| Included accessories |
Power cord × 1, operating precautions × 1, startup guide × 1 |
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