Quality electrical insulation is paramount in virtually any electrical system and ensures not only reliable operation, but mitigates dangers of overvoltage to both electrical equipment and personnel. External physical and chemical factors slowly degrade the insulation material, which may fail at most inopportune time.
Changes in dielectric properties of insulation materials that may lead to failure are best detected through high voltage testing with aptly named high voltage insulation testers, megohmmeters, or meggers as they are also commonly referred to as. Metrel offers a range of portable high voltage insulation testers suitable for testing in the 2.5 kV to 10 kV range using standard methods.
FEATURES*
- HV insulation analysis with voltages up to 10 kV DC.
- 3-wire connection with +, - and guard.
- PI, DAR and DD factor calculation.
- Step voltage testing.
- Withstanding programmable procedure.
- Graphical presentation of results R(t).
- Insulation resistance testing up to 20 TΩ.
- Adjustable test voltage (50 V…10 kV) in 50 V and 100 V steps.
- Programmable test timers.
- Capacitance measurement.
- Low charging rate for capacitive load s< 3 s / µF at 10 kV.
- Automatic discharge of tested object after completion of measurement.
- Guard terminal.
- High voltage breakdown detection.
- Custom defined tests.
- Auto adjustment feature.
- Measurement results in numerical and graphical form.
- PC software for download and analysis of test results and for test report creation.
- Isolated RS-232, USB and Bluetooth communication ports.
- High quality accessories including shielded test leads in the standard set.
- High EM interferences protection (input AC current noise rejection and additional averaging of results.
- Mains and rechargeable battery power supply.
APPLICATIONS*
- Power generation.
- Insulation of generator windings and primary transformers.
- Renewable powerplants.
- Hydroelectric power.
- Photovoltaic installations.
- Wind power generation.
- Power distribution.
- Insulation of long cables.
- Specific earth resistance measurement methods.
*Note: Presented features, functionalities and other information on this page represent a compound list of all products’ capabilities and not capabilities of each separate product. Consult datasheets and user manuals of each specific product for detailed information about supported features and functionalities.
