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Hioki ST4200-50 Partial Discharge Detector

Hioki ST4200-50 Partial Discharge Detector

Brand
Hioki
Model number
ST4200-50

Partial discharge detector for motor windings with AC and surge dual-mode detection, a high-frequency CT for noise resistance, 200 MS/s sampling and SW2001 multiplexer support.

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Key features

  • Compatible with the SW2001 High Voltage Multiplexer
  • Noise-resistance through high-frequency CT
  • AC and Surge dual-mode partial discharge detection

Specifications

AC PD measurement
Detection methodDischarge measurement method using detection impedance and band pass filter. Conforms to the detection method in IEC 60270.
Test frequency range (applied voltage)45 Hz to 1.1 kHz
Charge quantity measurement range10 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-), voltage peak-to-peak (Upp), 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)
Surge PD measurement
Detection methodDischarge current detection using CT and digital filters Conforms to the detection method in IEC 61934 Edition 2.0.
Sampling rate200 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 descriptionCooperative 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
AC and surge PD (shared)
FunctionsGraph display function, judgment function
Save destinationSD memory card, USB drive, SSD (Use only storage media sold by Hioki.)
Effects of radiative radio frequency electromagnetic fields50 pC or less (at 10 V/m)
Effects of conductive radio frequency electromagnetic fields50 pC or less (at 10 V)
Effects of pulse noise superposed on power supply50 pC or less (with pulse noise of 1 kV and pulse width of 50 ns)
InterfacesLAN, USB, RS-232C* (please use a commercially available USB-serial conversion cable.), 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 supplyRated supply voltage: 100 to 240 V AC; rated power: 300 VA
External dimensionsApprox. 353 mm (13.9 in.) W × 235 mm (9.25 in.) H × 154.8 mm (6.09 in.) D (excluding protruding parts)
MassApprox. 7.3 kg (257.5 oz.) (with U8332); approx. 7.1 kg (250.4 oz.) (without U8332)
Supplied with
ContentsPower cord × 1, operating precautions × 1, startup guide × 1
Ordering
Order codeST4200-50

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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