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I. Overview
W-Blokset low voltage switchboard is a system for all your applications requiring a high level of dependability: electrical distribution and motor control, widely used in industrial and mining enterprises, high rise buildings and municipal construction, compliance with standards as IEC60439-1, IEC60529, IEC60947 and GB7251.1, JB/T9661. It is distinguished with characteristics as below:
1) A complete range: a complete system implementing tested Schneider Electric switchgear components with its protection devices designed as per optimum coordination;
2) Dependability: designed and tested according to international standards;
3) Modular: an assembly of standardized prefabricated components, enabling fast manufacturing, easy modifications and reduced cost.
4) Intelligence: combine the components with senior protection and communication functions into the equipment for power distribution and motor protection.
II. Service conditions
Room environment: -5~+40, no higher than +35 for daily average
Altitude: not exceeding 2000m
Relative humidity: no more than 50% at +40, lower temperatures allowing greater relative humidity (it may reach 90% when the temperature is 20).
Earthquake intensity: not exceeding 7 Richter scale
Protection degree: IP30, IP43, IP54
III. Structural characteristics
1) The switchgear has withdrawble and fixed type with or without partition. A column may contain 40 modules, each 50mm high. Main busbars for drawer column: single taking 6 modules, double taking 10 modules; main busbars for other columns: single taking 4 modules and double taking 8 modules, rest for mounting modules occupied by functional units.
2) A modular multi-function range:
a) distribution switchboards (D type);
b) power factor correction column (Dc type);
c) fixed-type motor-control centers (Mf type);
d) withdrawble-type motor-control centers (Mw type);
e) variable-speed drivers and starters column (Ms type);
f) cubicles (C type)
3) The switchgear is combined by basic frames and extensions. The basic frame of a Blokset switchboard column is an assembly of prefabricated elements. These elements are variable in a number of sizes and may be assembled to form columns with different volumes. Switchboards of various depths and widths can be built by combining basic frames and extensions.
3 depths and 6 widths
The Blokset range may be used to build switchboards of various depths and widths by combining basic frames and extensions.
Basic frames are available in three depths:
400mm, 600mm, 1000mm, formed by combining two frames, one 400mm and the other 600mm deep
Basic frames are available in six widths:
500m (Mw type), 700mm, 900mm (Mw type), 1200mm (for Masterpact MT40b/50/63)
The width of a 700mm column may be increased by adding one or two extensions (200mm or 400mm).
4) The switchboard may be divided into four zones as busbars, switchgear components, cable connections and auxiliaries by metal plates grounded with separation forms of 1, 2b, 3b, 4a and 4b for option.
5) Mounting of switchgear components: fixed, plug-in and withdrawable
Height of drawer in functional units available with 150mm, 300mm, 450mm, 600mm and 750mm. Switchgear components making up the switchboard are installed in drawers to ensure rapid and dependable maintenance and servicing.
The plug-in switchgear and other components may be installed in one fixed partition unit and different heights of 150mm, 300mm, 450mm, 600mm for option subject to their size. The different zones are completely separate with high degree of safety and reliability.
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Metal-enclosed switchgear Withdrawable Switchgear Cubicle/Cabinet/panel Enclosure W-Blokset