Gost 25045 May 2026

GOST 25045-81 is a critical technical standard originating from the Soviet/Russian regulatory framework that specifies the requirements for , commonly referred to as micanite. These materials are vital in high-voltage engineering due to mica's exceptional thermal stability and dielectric properties. What is GOST 25045?

The maximum operating temperature (ranging from Class B at to Class H at gost 25045

Providing barriers between high-voltage windings. GOST 25045-81 is a critical technical standard originating

According to archival technical documentation found on Calaméo , this standard governs the production and quality control of insulating sheets and tapes made by bonding thin flakes of natural mica together using various resins or varnishes. Key Components of the Standard The maximum operating temperature (ranging from Class B

The full title of the standard is .

It defines the types of mica (such as muscovite or phlogopite) and the binding agents (shellac, epoxy, or silicone) that can be used.

Materials are typically categorized by their heat resistance and physical form (e.g., rigid sheets for commutator segments vs. flexible tapes for coil wrapping). Technical Requirements: