InteliSENS® ST-AC Series Spark Tester

InteliSENS® ST2560-HF - front view
InteliSENS® ST2560-HF - rear view
InteliSENS® ST2560-HF - ball chain electrode view
InteliSENS® ST2560-HF - connector panel view



  • 60mm maximum cable diameter.
  • 300mm long bead chain electrode.
  • 25kV maximum test voltage.
  • Distinguishes and separately counts pinhole and bare patch flaws.
  • 58Hz sine wave test frequency.
  • EN62230-compliant testing up to a line speed of 360 m/min.
  • Ozone extraction port.

Дополнительная инфо

Dimensional drawings
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InteliSENS® ST-AC Series Spark Tester


Proton Products InteliSENS® ST-AC series mains frequency spark testers meet the international standards stipulated for wire insulation testing.

The Proton Products ST2560-AC AC Frequency Spark Tester is designed for production line testing of cables for pinhole and bare patch insulation faults.

It accommodates cables up to 60 mm in diameter and outputs an AC frequency, user-adjustable EHT test voltage of up to 25 kV AC (rms).

Typical applications are for the insulation testing of power and automotive cables up to 60 mm in diameter with a production line speed less than 360 m/min (for EN62230-compliance).

This unit offers a broad selection of built-in and optional industry standard communications interfaces for connection to production controllers.

The InteliSENS® ST-AC Series electronics are housed in a rugged IP65 sealed steel case, ensuring reliability and long operational life.


ST2560-AC Specification
Wire diameter0.460mm
EN62230-compliant line speed360m / min
Electrode length300mm
Electrode type5mm bead chain
EHT test output voltage025kV (rms)
EHT test output voltage resolution0.1kV (rms)
EHT test output voltage accuracy2%
EHT test output frequency58kHz
EHT test output capacitive current (at 25 kV)9mA (rms)
EHT test output resistive current (at 25 kV)4mA (rms)
EHT test output continuous short circuit current10mA (rms)
Power supply voltage85220264VAC (rms)
Power supply frequency4765Hz
Power consumption374W
Operating temperature545°C

Standard interfaces

Enable inputSafety interlock input to enable the EHT test output voltage
2x Logic inputsFixed functionNot assigned
Reset current length and all fault counts and positions
Maximum input voltage24 V dc
3x Relay outputsUser configurable functionHigh voltage indication
Pin-Hole detected
Bare-Patch detected
Pin-Hole or Bare-Patch detected
Maximum fault count reached
Isolated contacts, maximum rating50 VDC / 30 VAC / 0.5 A
Analogue input0 - 10 V dc; controls the EHT test output voltage, user scalable
Analogue output0 - 10 V dc; proportional to the measured EHT test output voltage, user scalable
Line speed input50 V maximum pulses, 250 kHz maximum frequency, user scalable
Standard communication interfacesCAN-bus*RS-232**
RS-422 / 485Ethernet
* CAN-bus protocol is proprietary and only for connection to other Proton Products equipment such as an optional AiG2 interface display unit.
** An optional RS-232-to-USB converter cable is available for connection to USB equipped computers.

Optional interfaces – must be specified for installation at time of manufacture; cannot be retrofitted

Wireless (choice of any one of; not available in European markets)WiFi
Industrial Bus (choice of any one of)PROFIBUS