High-voltage transformer insulation tester | capacitance and insulation loss meter | 0.5–10 kV | 230 V | IP67

Technical specifications

Product type: transformer capacitance and Tan Delta meter
Purpose: testing of insulation, capacitance and dielectric losses of electrical equipment
Measurement functions: Cx capacitance, tgδ / Tan Delta, dissipation factor
High-voltage output: 0.5–10 kV
Voltage adjustment: in 500 V steps
Number of voltage levels: 20 levels
Output power: 1500 VA
Accuracy class: 0.2
tgδ accuracy: ±(reading × 1.5% + 0.06%)
Cx accuracy: ±(reading × 1.5% + 5 pF)
tgδ resolution: 0.01%
Cx resolution: 1 pF
Measurement range: from 0.01%
Minimum capacitance measurement: from 3 pF
Capacitance measurement limit at 10 kV: Cx ≤ 30000 pF
Capacitance measurement limit at 5 kV: Cx ≤ 60000 pF
Power supply: AC 230 V ±10%
Frequency: 50 ±1 Hz
Operating measurement frequency: 50 Hz
Variable frequency mode: 45 Hz / 55 Hz
Frequency switching: automatic
Harmonic adaptation: ≤3%
Protection class: IP67
Housing material: aluminium alloy
Operating temperature: from -15 °C to +50 °C
Relative humidity: <80%
Dimensions: 460 x 345 x 350 mm
Weight: 35 kg

Functions

Transformer insulation testing – helps assess whether the insulation is aged, damp or damaged
Cx capacitance measurement – measures the capacitance of electrical equipment and helps evaluate its technical condition
Tan Delta / tgδ measurement – indicates insulation losses and helps identify possible insulation defects
High-voltage testing up to 10 kV – designed for professional inspection of transformers, cables and other high-voltage equipment
Adjustable test voltage 0.5–10 kV – allows the appropriate voltage level to be selected according to the equipment being tested
Automatic 45 Hz / 55 Hz frequency switching – reduces the influence of mains interference and helps obtain more accurate measurement results
High-accuracy measurements – ensures reliable results during diagnostics and preventive maintenance
Robust IP67 housing – protects the device from dust and moisture in the working environment

Usage

For power grid and energy companies: Suitable for electrical substations, distribution networks, high-voltage equipment maintenance and periodic diagnostics. It can be used to test the insulation condition of transformers, cables, insulators, capacitors and other equipment.

For engineers: Useful for insulation quality assessment, fault analysis, preventive testing and preparation of technical condition reports. Cx and tgδ measurements allow informed decisions to be made regarding equipment operation, repair or replacement.

For electricians: Useful for checking high-voltage equipment after installation, repair or preventive maintenance work. The device helps determine whether the insulation is in suitable condition before the equipment is put into operation.

For industrial companies: Can be used for diagnostics of production transformers, motors, cable lines, compensation equipment and other electrical systems. Regular measurements help reduce the risk of unplanned failures and downtime.

For laboratories and testing centres: Suitable as a professional measuring tool for testing electrical insulation parameters. The high-voltage output, accurate capacitance measurement and Tan Delta function allow specialised technical tests to be performed.

Advantages

Measures Cx capacitance and dielectric losses tgδ / Tan Delta
Suitable for diagnostics of transformers, cables, insulators and capacitors
High-voltage output from 0.5 kV to 10 kV
Voltage adjustable in 500 V steps
High output power – 1500 VA
High measurement accuracy
Automatic 45 Hz / 55 Hz frequency switching

Disadvantages

The device weighs about 35 kg, so it is not a lightweight portable tester
Designed for professional use, not for household tasks

FAQ

Who is this tester designed for?
This device is designed to evaluate the insulation condition of transformers, cables, capacitors, insulators and other electrical equipment. It measures Cx capacitance and the dielectric loss factor tgδ / Tan Delta.

What does Tan Delta measurement show?
Tan Delta measurement shows insulation losses. The higher the tgδ value, the greater the likelihood that the insulation is damaged, damp, aged or contaminated.

Is this device suitable for transformer diagnostics?
Yes, the device is designed for testing the electrical parameters and insulation condition of transformers. It can be used for preventive maintenance, fault diagnostics and periodic testing.

What is the maximum test voltage?
The maximum high-voltage output value is 10 kV. The voltage is adjustable from 0.5 kV to 10 kV in 500 V steps.