spool insulator ANSI 53-4
Spool insulator ANSI 53-4 and other spool type insulator ANSI 53-1,53-2,53-1 are the same series. And spool insulator ANSI 53-4 should be meet American National standard for wet process porcelain insulator spool type. This standard named ANSI C29.3 and it covers all types of spool type high voltage insulator used in transmission and distribution of electric energy.
spool insulator ANSI 53-4 dimensions and characteristics:
Mechanical failing load: 20kN
Low frequency dry flashover voltage: 25kV
Low frequency wet flashover voltage:
Color: brown, grey, white
spool insulator ANSI 53-4 reel insulator ANSI 53-4
Design tests for Spool insulator ANSI 53-4 or other spool type insulator only has two Electrical data: one is low frequency dry flashover test, another is low frequency wet flashover test.
Spool insulator ANSI 53-4 and other type spool insulators are always used with D bracket. A pin insert the hole of spool insulator and the porcelain insulator was fixed on the D bracket. For the D bracket it has a bolt which mounted on pole. Conductors round spool insulator ANSI 53-4 via groove which must seat not less than 33 diameter mandrel.
We can supply porcelain spool insulator ANSI 53-4 and also can supply spool insulator with D bracket.