ST-15/25A Commercial Frequency AC Spark Tester is a special-purpose test apparatus to detect fault of insulation on wire and cable. Integrated with the technology of solid-state AC voltage regulation and single piece microprocessor control, the machine features steady voltage output (unaffected by variation of supply voltage), high sensitivity of fault detection, versatility, user-friendliness, safety and reliability, new construction and beautiful appearance.
Model | ST-15A | ST-25A | ST-25AT |
Voltage output | 1.0~5.0kV | 2.0~25.0kV | 2.0~25.0kV |
Voltage indication error | <5% | <5% | <5% |
Detection sensitivity | <600µA | <600µA | <600µA |
Stability | Complying with the requirements of GB3048.9-1994 and JB/T 4728.10 | ||
Detection resolution | 0.05s | 0.05s | 0.05s |
Transient breakdown current | 100mA | 50mA | |
Steady short-circuit current | <20mA | <20mA | <20mA |
Detection speed, Max | 300m/min | 350m/min | 350m/min |
Overall diameter of tested wire or cable, max | ≤30mm | ≤55mm | ≤90mm |
Dimension (L*W*H) | 680*362*1160 | 786*450*1188 | 786*546*1215 |