Bushings with RIN Insulation

20 September 2017. Izolyator continues to actively fine-tune technology of serial production of high-voltage bushings with solid internal RIN insulation, based on the polymer non-woven material.

The solid RIN insulation (Resin Impregnated Nonwoven) has been developed by Izolyator’s design office in collaboration with partners with the aim to increase water-tight features of the internal insulation of high-voltage bushings in severe operating conditions or for situation when operating and storage conditions are violated. The main insulation is a nonwoven polymer material that has no cellulose, and as a consequence possessing extremely high hydrophoby and resistibility to atmospheric humidity, which virtually eliminates any moistening of insulation. The material is void of water in the first place, which allows to eliminate thermal vacuum drying of wound core. This means a more reliable insulation and a shorter production cycle. In all other details RIN insulation making process is identical to RIP technology. RIN insulation can be used both with porcelain and polymer external insulation. Izolyator has patented RIN trademark and production technology and received certificates of conformity of RIN bushings to Russian and international standards.

HV RIN bushings are a practical result and a great achievement gained with Izolyator’s technical policy realization — to ensure a reliable equipment operation in any possible conditions.

500, 330 and 220 kV RIN bushings placed on technological racks at the assembly shop of Izolyator plant