The complete standardised test, from sample stirring to the printed report
Transformers testing Dielectrotest
Dielectric strength meter for insulating oil
Fully automatic measurement of the breakdown voltage of insulating liquids.
Up to 100 kV, with no operator intervention
The Dielectrotest determines the dielectric strength of insulating oils with test voltages up to 100 kV. The standard is chosen from the menu, the set displays the required electrode type and spacing, and the whole sequence runs automatically.
A switch-off that protects the sample
After breakdown, the high voltage is disconnected in less than 1 ms, avoiding carbonisation of the oil; the set indicates the individual breakdown values, the average value and the standard deviation.
Main features
- Pre-programmed national and international standards.
- Up to 10 user-defined test sequences.
- 400 ml glass test vessel with magnetic stirrer.
- Mushroom, sphere or disc electrodes, with adjustable spacing.
- Safety interlock on the chamber lid.
- Electromagnetically shielded test chamber.
Software and reporting
A printed report after every test
The built-in thermal printer issues a report with the applied standard, date and time, sample temperature and number, the individual breakdown values, the average and the standard deviation. The last 20 tests remain in memory and can be retrieved and printed.
Results archived on the computer
The results are downloaded to the PC via Bluetooth or the RS-232 serial interface with the data capture software, which stores them in spreadsheet format; the operator configures his own test protocol formats.
Guidance in the operator's language
The backlit graphic display and the four keys F1 to F4 guide the operation through a multi-language menu, with a dialog for entering the sample temperature and number.
DIELECTROTEST — MEASUREMENT DATA
| Test voltage | Up to 100 kV |
|---|---|
| Switch-off at breakdown | Less than 1 ms, against carbonisation of the sample |
| Test standards | Pre-programmed IEC and ASTM sequences (IEC 60156; electrodes to ASTM D877) |
| Rates and times | Defined by the sequence of the selected standard |
| User sequences | Up to 10, freely defined |
| Results | Individual breakdown values, average value and standard deviation |
| Electrodes | Mushroom, sphere or disc; adjustable spacing |
| Gap gauges | 2 and 2.5 mm, included |
| Sample | 400 ml glass vessel, with lid and magnetic stirrer |
Before the test, the set displays the electrode and spacing required by the chosen standard. The sample temperature and number are integrated into the printed report.
| DIELECTROTEST — TECHNICAL SPECIFICATIONS | |
|---|---|
| Type | Automatic dielectric strength meter, portable |
| Use | Laboratory and field: commissioning and maintenance |
| Display | Graphic, with backlight |
| Operation | 4 function keys F1 to F4; multi-language menu |
| Recording | Built-in thermal printer; memory of the last 20 tests |
| Communication | Bluetooth and RS-232 serial interface for PC download |
| PC software | Capture and archiving of results in spreadsheet format |
| Safety | Interlock cutting the high voltage when the lid opens |
| Housing | Rugged, with shielded test chamber |
| Standard accessories | 400 ml vessel, 2 stirrer rods, gap gauges, tweezers, thermal paper |
| Optional accessories | Mushroom, sphere or disc electrodes; thermal paper; PC software |