The surface of the insulator body of an electric high-voltage insulator is covered with at least a semiconductive layer having a surface resistivity of 1-1000 MΦ/square, and wherein the outermost layer mainly consists of a polymeric material.
The outer surface of the body and of the sheds of an electrical high-voltage insulator is covered with a semiconductive layer (10) having a surface resistivity of between 1 and 1000 MΦ/square.
The resistance of the control helix amounts to approximately 100 to 150 mΦ, and the current is supplied with clock pulses through the resistor element after the starting temperature has been reached.
High value resistors (27) are provided within the gun between the supply cable (7) and the positive and negative electrodes (22), each with a resistance in the range 40-500 MΩ.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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