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Composite hollow insulators are intended for general use (unpressurized) or for use with a permanent gas pressure (pressurized). They are intended for use in both outdoor and indoor electrical equipment operating on alternating current with a rated voltage greater than 1000 V and a frequency not greater than 100 Hz or for use in direct current equipment with a rated voltage greater than 1500 V.
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IPHT-10-145/550 |
Rated voltage, kV |
145 |
Full lightning impulse testing voltage, not less, kV |
550 |
Minimal bending failure, kN, not less (in the entire operating temperature range) |
10 |

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