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China, Chinese Industry Frequency AC Spark Tester, Wires and Cable Spark Test Instrument Testing Machine Digital1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Test InstrumentCable TesterWires and Cable Spark Test Instrument Testing Machine DigitalAC Spark TesterChina AC Spark Tester
China One-Tone Industrial Group Co., Ltd
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Product Description ST-15/25A Commercial Frequency AC Spark TesterST-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. The work principle of the spark tester is as follows: Make the tested wire pr cable travel through the high voltage bead-chain electrode having test potential supplied by a commercial frequency HV transformer. If the insulation has fault, breakdown will occur, namely the output of the HV transformer will cause a HV spark short-circuit. The short circuit current flows from the output terminal of the HV transformer through insulation fault-conductor of cable-earth-ground-HV transformer to form a circuit. Therefor both the spark tester and the conductor of cable shall be soundly earth-grounded otherwise the short circuit cannot be formed and the cabinet of the spark tester and conductor of cable may have high voltage.Technical Parameters TypeST-15AST-25AST-25ATVoltage output1.0-15.0kV2.0-25.0kV2.0-25.0kVVoltage indication error<5%<5%<5%Detection sensitivity<600μA<600μA<600μAStabilityComplying with the requirements of GB3048.9-1994 and JB/T 4728.10Detection resolution0.05s0.05s0.05sTransient breakdown current100mA50mA50mASteady short-circuit current<20mA<20mA<20mADetection speed, Max300m/min350m/min350m/minOverall diameter of tested wire or cable, max≤30mm≤55mm≤95mm
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