Shield of ventilation of the 1st tier

ERU must comply with the requirements of these specifications and design documentation approved in the prescribed manner. Component apparatuses, instruments and devices shall comply with the design documentation and be approved by the Russian Classification Society and/or Russian Maritime Register of Shipping type. The components not approved shall be subjected to tests according to the requirements of the Russian Classification Society and/or the Russian Maritime Register of Shipping.

Types of climatic execution M, OM, TM, product categories 2, 3, 4 according to GOST 15150. The degree of protection is chosen depending on the place of installation, but not lower than IP20. ESAs are designed for use in DC and AC circuits (frequency 50 and 400 Hz), voltage not more than 400V.

The doors of switchgear enclosures must be fixed in the open position. The doors of the switchgear enclosures shall be earthed with a flexible jumper. The electrical circuit diagram (on customer's request).