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HIGH CURRENT TEST PROBES (HSS)
High current test probes are used in several industries and applications with high currents, such as testing, function tests, signal transmission, power supply in production, as well as assembled contact elements. Another field of application is precise measurement, which requires test probes with very low internal resistance, so-called low-Ohm test probes.
For secure transmission of high currents, the plungers in INGUN high current test probes consist of two parts. During the stroke movement the plunger parts are deflected away from each other in a radial direction. In doing so, the plunger parts press against the barrel and the transfer resistance (Ri) is reduced. This principle allows the transmission of high currents with limited warming. The power loss, which causes warming, is calculated using the formula Pv=Ri*I².
The permitted current load capacity of each test probe can
be taken from the current rating graphs. The maximum permitted ambient temperature at rated current can be found in
the current de-rating graphs
Various installation options are available to mount the probes. The high current test probes can either be pressed in or screwed in the receptacle. Mounting without a receptacle is also possible. Screw-in probes are recommended for applications with vibrations, overhead installation and where there is a danger of test probe moving out of the receptacle (snapping effect). Screw-in probes have the designation ‘M’ at the end of the part number
High Current Test Probes (HSS)
Standard HSS
This test probe are unrivalled HSS probes with an optimal ratio of rated current load of 20 to 100 Amps in a compact design. Both press-in versions and screw-in versions are available.
Short-stroke HSS and long-stroke HSS
Short-stroke high current test probes
-are ideally suited to applications with limited test space available. As with the standard probes, various mounting options are available.
Long-stroke high current test probes are suitable for contacting situations which require a long stroke, e.g. dual stage contacting.
International standard probes
These are high current test probes without a collar. The installation height of these probes is adjusted using the receptacle.
Dipole high current probes (Kelvin probes)
A four-wire measurements can be performed to precisely define resistance. In doing so, the voltage (V) on the inner conductor and the current (A) on the outer conductor are measured.
High current clamps (round/flat)
These are used to contact flat connector blades and round posts, such as those found in plug connectors. PCBs and threaded bolts can also be contacted.
Four-wire clamps are suitable for performing four-wire
measurements
Robust high current probes
These are used wherever challenging atmospheric conditions, side force or vibrations can occur.
These robust probes are also suitable as a permanently assembled contact element in machinery.
High Current Test Probes (Low Ohm Probes)
HSS Probes Overview & Comparison
