Spark Testers for Insulated Cable & Wire
A spark tester checks wire and cable insulation for pinholes, thin spots, and other defects by passing the wire through a high-voltage electric field — any break in the insulation lets current arc through and gets flagged as a fault. Proton Products' InteliSENS spark testers come in four types: high-frequency (fastest line speeds, meets UL1581/EN50356/IEC62230), mains-frequency AC (single-wire, multi-wire, and remote-head configurations), DC (single-wire applications), and dedicated multi-wire/flat cable testers — available with bead chain or brush electrodes.
High Frequency Spark Testers
Intelisens® ST0505-HF-i4
| Min. Diameter | 0.5 mm (0.02 in) |
| Max. Diameter | 5 mm (0.2 in) |
| Min. Test Voltage | 5 kV(rms) |
| Max. Test Voltage | 2000 m/min |
Intelisens® ST1525-HF-i4
| Min. Diameter | 0.5 mm (0.02 in) |
| Max. Diameter | 25 mm (1 in) |
| Min. Test Voltage | 1 kV(rms) |
| Max. Test Voltage | 15 kV(rms) |
Intelisens® ST1550-HF-i4
| Min. Diameter | 0.5 mm (0.02 in) |
| Max. Diameter | 50 mm (2 in) |
| Min. Test Voltage | 1 kV(rms) |
| Max. Test Voltage | 15 kV(rms) |
High Frequency - Remote Head Spark Testers
Intelisens® ST0505-HFR-i4
| Min. Diameter | 0.5 mm (0.019 in) |
| Max. Diameter | 5 mm (0.19 in) |
| Min. Test Voltage | 0.5 kV(rms) |
| Max. Test Voltage | 5 kV(rms) |
Intelisens® ST1525-HFR-i4
| Min. Diameter | 0.5 mm (0.019 in) |
| Max. Diameter | 25 mm (1 in) |
| Min. Test Voltage | 1 kV(rms) |
| Max. Test Voltage | 15 kV(rms) |
Intelisens® ST1550-HFR-i4
| Min. Diameter | 0.5 mm (0.019 in) |
| Max. Diameter | 50 mm (1 in) |
| Min. Test Voltage | 1 kV(rms) |
| Max. Test Voltage | 15 kV(rms) |
Mains Frequency Spark Testers
Intelisens® ST2560-AC-i4
| Max. Wire Diameter | 60 mm (2.36 in) |
| Electrode length | 300 mm (6 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST2560-L(625)-AC-i4
| Max. Wire Diameter | 60 mm (2.36 in) |
| Electrode length | 625 mm (24.61 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST25130-AC-i4
| Max. Wire Diameter | 100 mm (3.94 in) |
| Electrode length | 300 mm (11.811 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST35150-AC-i4
| Max. Wire Diameter | 130 mm (5.12 in) |
| Electrode length | 300 mm (11.81 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Mains Frequency - Remote Head Spark Testers
Intelisens® ST2560-l625-AC-i4
| Max. Wire Diameter | 60 mm (2.36 in) |
| Electrode length | 625 mm (24.61 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST25130-AC-i4
| Max. Wire Diameter | 100 mm (3.94 in) |
| Electrode length | 300 mm (11.811 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST35150-AC-i4
| Max. Wire Diameter | 130 mm (5.12 in) |
| Electrode length | 300 mm (11.81 in) |
| Electron type | 4 bead chain |
| EHT test output voltage | 25 kV(rms) |
Multi Wire and Flat Cable Spark Testers
Intelisens® ST2560-ACMW-i4
| Max. Wire Diameter | 60 mm (2.36 in) |
| Electrode length | 300 mm (11.81 in) |
| Electron type | Brush |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST2540-ACF-i4
| Max. Wire Diameter | 40 mm (2.36 in) |
| Electrode length | 300 mm (11.81 in) |
| Electron type | 5 mm bead chain |
| EHT test output voltage | 25 kV(rms) |
Intelisens® ST2560-HFMW-i4
| Min. Diameter | 0.5 mm (0.019 in) |
| Max. Diameter | 25 mm (1 in) |
| Min. Test Voltage | 1 kV(rms) |
| Max. Test Voltage | 15 kV(rms) |
Spark Testing FAQ's
Why choose a high-frequency tester over mains-frequency?
HF testing supports significantly faster line speeds. It's especially important for UL1581 compliance, where the standard's 9-cycle requirement would need an impractically long electrode at mains frequency. HF also generates a full ionization cloud at lower voltage for complete wire-surface coverage.
What standards do Proton's spark testers meet?
UL1581, UL2556, EN50356, and IEC62230/EN62230, depending on model.
What electrode options are available?
Bead chain or brush-type, both quick-change on most models.