Diagnose the Insulation Quality and Deterioration of Rotor Windings while in Assembled State via Response Waveform Quantification
The ST4030A is an impulse winding tester, or surge tester, that combines the functions of both a resistance meter and insulation-withstand testing required for electric motor winding manufacturers to improve quality. Meet the needs of more reliable motor windings in light of the increasing use of electric vehicles and self-driving technology.
The ST4030A detects the existence of layer shorts between coil windings, defects that are found in motor inductors. By using a master waveform taken from a reference coil after applying an impulse voltage, and comparing it to the measured waveform across a specific interval of the coil under test, the resulting area difference can help determine pass or fail easily and accurately. In addition, quantification of response waveforms, a new method developed by Hioki, lets you detect even single-turn faults by using a pass/fail distribution plot.
| Measurement items | • Quantification (LC value, RC value) of the response waveform obtained when impulse voltage is applied, pass / fail judgment • Waveform judgment using AREA value, Flutter, Laplacian etc. • Equipped with dielectric breakdown voltage test function |
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| Applied voltage | 100 V to 4200 V (Setting resolution: 10 V steps) Maximum applied energy: approx. 88 mJ |
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| Testable inductance range | 10 μH to 100 mH | |||||
| Sampling | 200 M / 100 M / 50 M / 20 M / 10 MHz, Resolution: 12 bits, Number of data: 1001 to 800 points (1000 point steps) | |||||
| Voltage detection accuracy | [DC accuracy] ± 5% of setting, [AC band] 100 kHz: ± 1 dB | |||||
| Determination method | LC · RC value judgment, waveform judgment, discharge judgment (when incorporating the ST9000) | |||||
| Number of test condition tables | 255 (test condition setting, judgment condition setting, master waveform) | |||||
| Test time | About 60 ms (3000 V, 1 pulse, reference value at decision OFF) | |||||
| Display | 8.4-inch SVGA color TFT liquid crystal (800 × 600 dots), touch panel | |||||
| Interface | Standard: EXT.I/O, USB host (memory), USB device (communication), LAN Optional: RS-232C (Z3001), GP-IB (Z3000) |
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| Power supply | 100 V to 240 V AC, 50/60 Hz, 80 VA max. | |||||
| Dimensions and mass | 215 mm (8.46 in)W × 200 mm (7.87 in)H × 348 mm (13.7 in)D, 6.7 kg (236.3 oz) | |||||
| Included accessories | Power cord ×1, Instruction Manual ×1, Application disc ×1, Usage notes ×1 | |||||
