Hioki ST4200 Partial Discharge Detector | APC Technology Group
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ST4200

ST4200

Hioki

Partial Discharge Detector

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Dual partial-discharge detector with high noise resistance for EV motors

The ST4200 Partial Discharge Detector offers comprehensive partial discharge (PD) detection. 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 make PD detection using a microwave antenna often difficult, and at times, nearly impossible.

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
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Click below to request a quote for this item. Or for product advice, stock and lead time enquiries call our team on 0330 313 3220.

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More Information
Attribute Value
Power Supply Rated supply voltage: 100 to 240 V AC; rated power: 300 VA
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)
Functions Graph display function, judgment function
Dimensions and Weight

Approx. 353 mm (13.9 in.) W × 235 mm (9.25 in.) H × 154.8 mm (6.09 in.) D (excluding protruding parts)
Approx. 7.3 kg (257.5 oz.) (with U8332); approx. 7.1 kg (250.4 oz.) (without U8332)
Accessories Power cord × 1, operating precautions × 1, startup guide × 1
Detection Method

AC PD Measurement
Discharge charge-quantity measurement method using detected impedance and a band-pass filter in compliance with IEC 60270 and IEC 60034-27-1

Impulse PD (Surge PD Measurement)
Discharge current detection using a CT and digital filter in compliance with IEC 61934 Edition 2.0 and IEC 60034-27-5
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

AC PD Measurement
[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
[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)
Sampling Rate 200 MS/s
High-Voltage Source Control

Cooperative control of withstanding voltage tester and impulse winding tester used as high-voltage generators for partial discharge testing.

Compatible with: Automatic Insulation/Withstanding HiTester 3153, Impulse Winding Tester ST4030A, etc
Save Destination

SD memory card, USB drive, SSD
(Use only storage media sold by Hioki.)
Effects of Pulse Noise Superposed on Power Supply 50 pC or less (with pulse noise of 1 kV and pulse width of 50 ns)
More Information
Attribute Value
Data Sheet Click here to view

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