Fluke 80K-6 High Voltage Probe
The Fluke 80K-6 is a high voltage probe used with a multimeter or voltmeter to measure voltages higher than the instrument can normally handle directly. It allows for measurements up to 6,000 V peak AC or DC, but only on energy-limited circuits. It must not be used on power supply and distribution networks.
In practice, it acts as an intermediary between the measuring point and the measuring instrument. The probe attenuates the voltage with a ratio of 1000:1, so the multimeter sees a much lower value than the actual voltage. This is a common way to measure high voltages without unnecessarily loading the circuit. When used with a voltmeter with a 10 MΩ input impedance, the ratio correctly matches the measurement.
It is relevant when measuring, for example, high voltage inside equipment where you need to safely access the signal with a standard measuring instrument. The probe also has a separate ground lead, which must be connected to a known good ground before taking the measurement. This is an important part of the design, as otherwise the measurement circuit will not be correctly closed.
Connection is made with standard double-banana plugs, so it can be used with compatible AC/DC voltmeters and multimeters that accept this type of connection. This makes it easy to integrate into an existing measurement setup when high-voltage measurement is needed with a standard instrument.
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Specifications
- High voltage probe for measuring up to 6,000 V peak AC or DC
- 1000:1 attenuation when used with a voltmeter with 10 MΩ input impedance
- Input impedance: 75 MΩ nominal
- Accuracy: 1% DC from 0-6 kV; 1% DC up to 500 Hz for AC
- Standard double-banana connection
- Supplied with protective ground lead, which must be connected during measurement
- Intended for energy-limited circuits
- Must not be used on power distribution systems
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