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IT-30B Impulse Spark Tester

The IT-30B is the Clinton Instrument Company's Impulse Spark Tester designed as an alternative to the wet dielectric test. It is primarily used when testing wire to specifications that have not adopted the high frequency spark test such as MIL-C-13777E, MIL-W-16878D, and some NEMA specifications.

Downloads & Questions

We often provide our spec sheets and manuals in multiple languages. Contact us to let us know what you need, and we will get it to you!

Technical Specifications

Major Features:

  • Pinhole/Bare Wire Differentiation

  • Flexible Communication Options

  • Reliability

  • Ease of Use



Test Voltage Range

3-30kV (negative peak volts)


+/- 3% of reading

Voltage Metering

+/- 3% FSD (true negative peak indication).

Impulse Wave Form

Negative pulse with an exponentially dampened sinusoid.

Rise Time

(10% to 90%) 10 +/- 2 microseconds

Impulse Repetition Rate

250 +0/-2 Impulses Per Second

Fault Indication

White 3-digit 20.32mm high LED display, amber fault indicating LED

Fault Resolution

Variable with electrode length or directly configurable from 1 millisecond to 2 seconds

Detection Sensitivity

Conforms to IEC MIL-STD-2223

Operating Modes

Continuous HV/remove voltage on fault, momentary process control/latch until reset

Relay Outputs

1 Form C, 3 Form A / Configurable Functionality
Relay contacts rated 1A max @ 240VAC or 2A max @120VAC for both NO and NC circuits. Front panel or external reset. In non-latch modes, closure time is adjustable in 10 millisecond increments from 50 milliseconds to 2 ½ seconds

Power Requirements

100 to 240VAC 49-61 Hz. Power supply self-adjusting


Designed to IEC-61010-1

Relay Outputs

Form C relay contacts, 5 amperes    
Pinhole Alarm, Bare Wire Alarm, Voltage Watchdog, Cover Open, Pinhole/Bare Wire Count Limits, etc.


Analog, Modbus RTU via RS-485

Optional Communications

Ethernet IP, Modbus TCP, Profibus, Profinet, DeviceNET

Bead Chain Electrode Lengths

BD-12S, Bead Chain ¾” Product Diameter, 2” along the wire line.

BD-13S, Bead Chain ¾” Product Diameter, 3” along the wire line.

BD-14S, Bead Chain ¾” Product Diameter, 4” along the wire line.

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