As one kind of tie-top line post insulator, ANSI 57-3 porcelain line post insulator / solid core line post insulator has a better performance for its perfect technology, and the design tests also guarantee the quality and safety of these insulators.

ANSI 57-3 porcelain line post insulator design tests:
Low-frequency dry flashover test: Three porcelain line post insulators shall be selected at random and tested in accordance with 4.2 of ANSI C29.1. Failure of the average dry flashover value of the three solid core line post insulator to equal or exceed 95% of the rated dry flashover value, as given in table 1, shall constitute failure to meet the requirements of this standard. Low-frequency wet flashover test is according to 4.3 of ANSI C29.1 and the value equal or exceed 90% of the rated value.

In addition to Low-frequency dry flashover test and Low-frequency wet flashover test, Critical impulse flashover tests-positive, radio-influence voltage test and thermal shock test belong to this type solid core line post insulator design tests, too.

ANSI 57-3 porcelain line post insulator parameters:

Orient supplies wet process ANSI 57-3 porcelain line post insulator for distribution line application 45 kV. All solid core line post insulator products are solid core wet process porcelain and are manufactured and tested in conformance with ANSI Standard C29.7.

Orient Power will do all series of tests for our line post insulators before selling. The line post insulator tests include design tests, quality conformance tests, cantilever-strength test and routine tests. More details about ANSI 57-2 porcelain line post insulator or solid core line post insulator can be shown for you through emails or online contact.

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