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.
- Identify previously undetectable defects
- Detect waveforms with high precision (200 MHz high speed sampling × high 12-bit resolution)
- Identify single-fault turns via quantification of response waveforms into LC and RC values
- Diagnose defective insulation (pseudo-shorts) between motor windings by testing for microscopic partial discharges hidden in noise (option)
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 |
Applied Voltage | 100 V to 4200 V (Setting resolution: 10 V steps) |
Maximum Applied Energy | Approx. 88 mJ |
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) |
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 |