RSP High Voltage Probe – Precision High-Voltage Measurement Probe
The RSP High Voltage Probe by Rathod Services Pune (RSP) is a high-resistance voltage measurement probe designed to enable safe and controlled measurement of high-voltage electrical circuits when used with a compatible measuring instrument.
The probe incorporates a 200 MΩ input resistance and a high-resistance voltage-divider arrangement to reduce the voltage presented to the measuring instrument. With 1% accuracy, a 2.0 m cable, and a practical insulated probe body, it is suitable for laboratory, electrical testing, service, and high-voltage measurement applications.
Key Features of RSP High Voltage Probe
- High Input Resistance: Equipped with 200 MΩ input resistance to minimize loading on the circuit under test.
- 1% Accuracy: Designed for high-voltage measurements with a specified accuracy of ±1%, subject to applicable operating conditions.
- High-Voltage Measurement: Allows high-voltage signals to be measured through a suitable voltage-divider measurement arrangement.
- 2.0 m Cable: Provides convenient separation between the probe and the connected measuring instrument.
- Insulated Probe Construction: Designed with an insulated body and extended probe tip for controlled contact during measurement.
- Ground Connection: Supplied with a dedicated ground lead and clip for appropriate measurement configurations.
- Wide Temperature Range: Specified operating temperature of 0°C to 50°C.
- Storage Temperature: Can be stored within −20°C to 70°C.
- Temperature Coefficient: 50 ppm/°C.
- Easy-to-Handle Design: The handheld construction makes the probe practical for controlled laboratory and field testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | High Voltage Probe |
| Brand / Manufacturer | RSP – Rathod Services Pune |
| Accuracy | 1% |
| Input Resistance | 200 MΩ |
| Cable Length | 2.0 m |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | −20°C to 70°C |
| Temperature Coefficient | 50 ppm/°C |
| Measurement Principle | High-resistance voltage-divider arrangement |
| Connection | Probe tip + ground lead |
Important: The maximum permissible input voltage, divider ratio, bandwidth, CAT/overvoltage category and output ratio should be specified from the applicable RSP datasheet. These values should not be assumed solely from the image.
How Does a High Voltage Probe Work?
A high-voltage probe generally uses a high-resistance voltage divider to reduce a high input voltage to a lower proportional voltage that can be measured by a compatible meter or other measuring instrument.
The measurement principle can be represented as:
High Voltage → High-Resistance Divider → Reduced Voltage → Measuring Instrument
The probe’s 200 MΩ input resistance helps reduce the current drawn from the circuit under test, which is particularly important when measuring high-voltage circuits where excessive loading could influence the measurement.
The actual voltage conversion ratio depends on the probe’s internal divider design and must be used according to the manufacturer’s specified ratio.
Construction of RSP High Voltage Probe
1. Insulated Probe Body
The elongated insulated housing provides the operator with a controlled grip and physical separation from the high-voltage measurement point.
2. Measurement Tip
The pointed metal tip is intended to make contact with the specified test point during measurement.
3. High-Resistance Divider
The probe incorporates a high-resistance measurement network designed to scale the applied voltage to an appropriate level for the connected measuring instrument.
4. Ground Lead
The supplied cable includes a ground connection with an alligator clip, allowing the probe to be connected to the appropriate reference/ground point of the test setup.
5. 2.0 m Connecting Cable
The 2-meter cable provides flexibility for connecting the probe to compatible measurement equipment while maintaining physical separation from the test point.
Applications of RSP High Voltage Probe
The RSP High Voltage Probe can be used for:
High-Voltage Electrical Testing
Measurement of high-voltage points in suitable electrical and electronic test systems.
Laboratory Measurements
Useful for controlled high-voltage experiments, testing, and engineering laboratory work.
Instrument Verification
Can be used with compatible measuring instruments for checking high-voltage measurement systems.
Power & Electrical Equipment Testing
Suitable for measurement tasks associated with electrical equipment and high-voltage test setups, within the probe’s specified limits.
Research & Development
Useful in engineering R&D applications requiring high-voltage signal measurement.
Maintenance & Troubleshooting
Can assist qualified technicians in diagnosing high-voltage circuits when used with appropriate safety procedures and equipment.
Why Is Input Resistance Important?
For a high-voltage probe, input resistance is an important electrical parameter.
The RSP probe has a specified 200 MΩ input resistance. A high input resistance helps limit the current drawn by the measurement device from the circuit under test, thereby reducing the probe’s loading effect.
This is particularly important when measuring circuits where the measurement instrument itself could otherwise significantly affect the circuit voltage.
Temperature Performance
The RSP High Voltage Probe is specified for:
- Operating temperature: 0°C to 50°C
- Storage temperature: −20°C to 70°C
- Temperature coefficient: 50 ppm/°C
The temperature coefficient indicates that the electrical characteristics of the probe can vary with temperature. Therefore, measurements requiring higher precision should be performed within the specified operating conditions.
RSP High Voltage Probe – Professional Measurement Solution
The RSP High Voltage Probe combines a 200 MΩ high input resistance, 1% specified accuracy, insulated probe construction, ground connection, and 2.0 m cable into a practical high-voltage measurement accessory.
It is designed for use with compatible measuring instruments in electrical laboratories, high-voltage testing, equipment maintenance, calibration-related work, and engineering applications.
For safe operation, the probe must always be used within its specified voltage, frequency, environmental and measurement-category limits, with appropriate high-voltage safety procedures.ments when choosing a high voltage probe.
Mr. Jijabrao Rathod is associated with Rathod Services Pune, a firm established in 2016. The company operates as a Proprietor and specializes in manufacturing products such as High Voltage Probes and Electrical Calibrators1