ANSI class 57-2 porcelain line post insulator is used on distribution line and transmission line upto 55KV. Tie-top line post insulator is mounted rigidly on supporting structure by means of a short or long stud.
ANSI C29.7 standard covers high-voltage line-post-type insulators made of wet-process porcelain and used in the transmission and distribution of electrical energy. ANSI class 57-2 porcelain line post insulator is mounted rigidly on supporting structure by means of a steed or bolts.
ANSI class 57-2 porcelain line post insulator metal parts:
Its metal parts shall be made of a good commercial grade of malleable iron, ductile iron, steel, or aluminum. Ferrous parts, other than stainless steel, shall be galvanized in accordance with ASTM A153. The metal part is used with stud, so also called stud base.
ANSI class 57-2 porcelain line post insulator parameters:
Type | 57-2 | ||
Power frequency flashover voltage | Dry | KV | 100 |
Wet | KV | 70 | |
Critical impulse flashover voltage | KV | 160 | |
Radio interference voltage | Test voltage to ground | KV | 22 |
Max. RIV at 1 MHz | μV | 100 | |
Leakage distance | Inches | 22 | |
Dry arcing distance | Inches | 9.5 | |
Cantilever strength | Pounds | 2800 |
ANSI class 57-2 porcelain line post insulator products are sampled and the samples are tested to destruction! The people of Orient are dedicated to quality and product performance! More details about porcelain line post insulators can be shown for you through emails or online contact.
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