Dual Access Enclosure Series SHORV “HALK”

HALK enclosure (SHORV8914068) is intended for safe operation of large-sized equipment, electrotechnical apparatuses and components in hazardous areas. The enclosure provides “Ex d” type of explosion protection and has a long service life. At the design stage, the enclosure undergoes the mathematic modeling and testing in order to confirm the compliance with the stated explosion protection marking.

The enclosure is installed on /RAMA frame for floor mounting made from galvanized steel (cold or hot galvanizing), stainless steel is upon request. The frame is frictionally intrinsically safe non-electrical equipment with IIGb and IIIDb level of protection.

Example of assembly of automatic transfer switch cabinet (800A)

On the base of HALK enclosure

Assembly of several enclosures

On the base of HALK enclosure

Dimensions, mm	1490x774x1850
Mass, kg	477(without frame), 573(with frame)
Access	dual

Assembly of several enclosures

Dimensions, mm	5000x500x2500
Mass, kg	1087(without frame), 1255(with frame)
Access	single

Full production cycle starting from the design, casting molds and assembly of finished products is performed at the explosion-proof equipment plant “ZAVOD GORELTEX” Co. Ltd. in the territory of the Russian Federation.

The “X” sign placed after Ex-marking indicates that it is prohibited to use this equipment in hazardous mixtures of acetylene and air.

Scope of application - hazardous indoor and outdoor areas in accordance with explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996) and areas hazardous with combustible dust ignition, as per GOST IEC 61241-3-2011, dangerous production facilities of I, II, III, IV hazard classes under supervision of Rostekhnadzor and national supervisory bodies of the CU and the CIS countries.

HALK is the registered trademark in the territory of the Russian Federation.

Remark: For options /SHINA Z and /SHINA N, bus bars with 2 holes x 16 mm² and a row of holes 6 mm² are installed by default (the quantity depends on the bus bar length). Installation of bus bars with different diameter of holes is possible upon customer’s approval.

IT IS IMPORTANT TO KNOW

Requirements to fasteners of flameproof enclosure as per GOST IEC 60079-1-2013:

§ 11.1 Fasteners accessible inside and outside and required for assembly of parts of the flameproof enclosure shall:

- be special fasteners (countersunk or used in blind holes, or the protection of which is provided by the equipment design) and meet the requirements of GOST 31610.0 (for the equipment of group I);

- be special fasteners and meet the requirements of GOST31610.0 (for the equipment of group II).

Note – Application of countersunk fasteners or in blind holes for the equipment of group I is required for the protection of fasteners heads from impact. Cylindrical heads of screws with hexagonal socket for the equipment of group II shall be countersunk or used in blind holes, or their protection shall be provided by the equipment design.

MECHANICAL PROCESSING OF SHORV BOXES

The thickness of wall and cover of SHORV explosion-proof enclosures is sufficient to manufacture threaded holes for the connection of various types of explosion-proof cable glands, control and indicating elements. There is a wide range of standard control, indicating, and signaling elements, elements and modules for specific tasks, as well as typical elements upon customer’s request. Big size of control elements of M series enables the operators to work in gloves, indicating elements have large diameter – 40 mm and are equipped with a reflector, which makes the signal clearly visible at large viewing angle and various degree of surface dirtiness. Operating handles for circuit breakers are selected depending on the number of poles and circuit breaker type. Handle’s axle length can be adapted to the type of circuit breaker and size and type of the explosion-proof enclosure.