Salt fog chamber
Weather ageing tests
In order to perform long-term tests on insulators or arresters the High-Voltage Laboratories feature three salt fog chambers. These provide the opportunities to undergo weather aging tests for insulators and surge arresters.
The salt fog chambers offer the following opportunities:
- 1000 h – tests
- Monitoring of max. 6 channels
- Volume between 14,8 m³ und 58 m³
- 0…130 kV AC
- 0…8 kV DC
Accelerated Weathering Tester QUV/se
Verification of Resistance against combined humidity-UV-stress, e.g. as per ASTM G154
- UVA/UVB-exposure of selectable intensity
- humidity achieved by means of condensation
- selectable temperature
Inclined Plane Test
Fixed and Step voltage for the investigation of creepage distances according to IEC 60587, VDE 0303 T.10 and ASTM 2303-97
Parallel testing of up to five specimen
Modified Rotating Wheel Test
For execution of accelerated surface aeging of insulating materials e.g. as per IEEE Std C62.11.
0…100 kV AC
Other dielectric tests
Determination of breakdown strength
Determination of breakdown strength of solid insulating materials according to IEC 60243-1, IEC 60243-2 and IEC 60243-3 with voltages up to 100 kV (AC, DC, Impuls). Additionally, it is possible to use different electrode configurations that are mentioned in IEC 60243.
In addition to solid insulating materials, liquids can also be tested in accordance with IEC 60156.
Determination of surface and volume resistivity
The volume resistivity of solid materials can be measured with accordance to IEC 62631 for values up to 1E18 Ohm*cm. For this purpose a High resistance Electrometer from Keysight (B2985A) is used to detect currents down to 1 fA. For semi condtive rubbers it is possible to measure in accordance with ISO 1853. All measuremnts can be carried out at different temperatures and humidities in a climatic chamber.
Determination of permittivity and dielectric loss factor
In accordance with DIN VDE 0303-4 for a frequency range of 20 Hz to 20 kHz for different temperatures up to 200 °C.
Aging of different materials in heating chambers (BINDER FED 115) with temperatures up to 200 °C with or without voltage stress up to 10 kV.