电容和稳定因素测试，在（供求信息）版块有人销售这种仪器

6.5 Capacitance and relative permittivity

6.5.2 Apparatus
The apparatus shall consist of
a) a capacitance bridge capable of operating at a sinusoidal or nearly sinusoidal voltage at a
frequency of 1000 Hz at 10 V or less, or 60 Hz at 3.15 kV/ mm (80 V/mil) of insulation
thickness;
b) a water tank capable of maintaining the water at the required temperature; and
c) a temperature-measuring device with an accuracy of ±1 °C.

主要仪器是电容电桥。

6.6 Stability factor

The apparatus shall consist of
a) a power factor bridge capable of operating at a sinusoidal or nearly sinusoidal voltage at a
frequency of 60 Hz at 3.15 kV/mm (80 V/mil) and 1.58 kV/mm (40 V/mil) of insulation thickness;
b) a water tank capable of maintaining the water at the required temperature;
c) a forced-circulation air oven in accordance with Clause 4.2.3 Item (i); and
d) a temperature-measuring device with an accuracy of ±1°C

主要仪器是功率因数电桥。也可以通过电容电桥测试介损再进行计算得到功率因数。