The SAU AVO Automatic Transfer Switch Cabinet (Шкаф автоматического ввода резерва) is a purpose-built electrical switchgear unit that forms a critical part of the SAU AVO automated control system for air-cooled heat exchangers, manufactured by BORHIMASH OJSC — the Borisoglebs Chemical Machinery Plant, a Russian industrial enterprise recognised with the Order of the Red Banner of Labour. Produced to technical specification TU 4252-001-00218880-2012, this cabinet has been manufactured as part of BORHIMASH's in-house SAU AVO production programme since 2011, within a full production cycle that spans from engineering and design through to factory testing and on-site commissioning at the customer's facility.
Rated at 2500 A, 50 Hz, and constructed from steel, copper, aluminium, and engineering plastics, the cabinet is designed for climate categories UHL 3 and UHL 4, covering a broad range of indoor industrial environments. Its core function is to automatically switch between the main and backup power feeds supplying the SAU AVO processor and control hardware, ensuring uninterrupted system operation even when both primary and standby utility supplies are lost — a requirement explicitly built into BORHIMASH's SAU AVO function list.
The modular design with a 800 mm cabinet length allows straightforward integration into existing control system layouts.
BORHIMASH holds ISO 9001 certification and supplies SAU AVO systems to major oil, gas, and chemical industry operators, including compressor stations within the PAO Gazprom network. Procuring the ATS cabinet as part of a complete BORHIMASH AVO and SAU AVO package extends the warranty on the automated air-cooling complex to 36 months under a single-supplier responsibility model.
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