So, in the use of insulator equalizing ring when must pay attention to the following matters:
1, composite insulator equalizing ring and galvanized iron equalizing ring diameter is roughly same, installation direction is the same.
2, 66 kv and below voltage grade of composite insulator don't need to be equipped with pressure ring
3, 110 kv voltage class of composite insulator can not equipped with equalizing ring, can also according to the requirement of the user in the high voltage side install a pressure ring
4, 220 kv voltage class of composite insulator in the high pressure side install an equalizing ring, or according to the requirement of the user in the upper and lower ends are equipped with pressure ring