Construction is performed in conformance to DIN, BS and ANSI standards. They comprise the following groups of insulators:
Besides standard insulators, there are insulators with elongated oil part, as well as with the elongated creepage distance for the operation in polluted conditions. Manufacturing material is mass C-110. Dimension tolerances are in conformance to DIN 40680A; they are tested in conformance to IEC-137. Metalization can be done at buyer's request.