Distribution board (DB)

Distribution board (DB)

Distribution board is used in low-voltage systems, installed in the technical room of each floor or before group of load consumers inside factory or workshop. Hawee can design, production and tailor-made offer for full range of DB switchboard up to 1250A.

Scope of installation:
Distribution board is installed in the technical room of each floor or before group of load consumers inside factory or industrial workshop and civil projects such as factories, industrial workshops, commercial centers, office buildings, apartments, hospitals, schools, habours, airports …
Distribution board is installed after main switchboard and before consumption loads

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Applications Distribution Lighting
Reference standards IEC 61439-1 & 2
Installation Indoor



Electrical Specifications
Rated insulation voltage (Ui) 1000 V AC
Voltage rating (Ue) 690 V AC
Rated frequency (F) 50/60 Hz
Rated impact withstand voltage (Uimp) 12 kV
Auxiliary circuit rated voltage 230 V AC max.
Surge category IV
Degree of pollution 3
Rated current (ln) 1250A
Rated 1s short-term current (lcw) 25 kA
Rated peak current (Ipk) 53 kA
Earthing system TT-IT-TNS-TNC
Power incoming and outgoing limits Up to 630 A


Structures and cover is made from imported steel sheet from international firms according to industrial standard JIS G3302 (Japan), EN10142 (Europe) and ASTM A653/A653-08 (America);
Surface: Zinc coated or electro-power coated under strictly quality assurance procedure to ensure long life time of product;
Doors, ingress protection degree are designed and offered on option up to IP 42 (indoor used);
Busbar, components are optimal arranged, convenient for installation and operation;
Heavy duty hinges, locks and other accessories are carefully selected, standardized to ensure sightly appearance, utilized for operation.


Main Switchboadrds

Introduce:The switchboard distributes the total input MSB for the entire low-voltage electrical system of a building,Application:Installed in the general electrical engineering room of industrial and civil works

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Introduction:Great progress has been made in the development and improvement of distribution transformers over the last decades.The application of high quality insulation material and suitable selection of the coil structure for high stress have contribute to the development of LS CAST RESIN Transformers. The LSCAST RESIN Transformer has succeeded in combining the advantage of oil-filled and conventional dry type transformers, which are fabricated with anepoxy resin. The windings are completely embedded under vacuum conditions.This casting method makes it possible to assure void-free epoxy penetration of both the inner layer and turn to turn insulation.ApplicationLS CAST RESIN Transformers canbe used in various fields.Here are just a few possibleapplications.● Indoor and outdoor unit substations● Off-shore flatforms● Commercial buildings● Hospitals● Shopping centers● Water supplies● Traction systems● SCR Power supplies

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Busway Schneider

IntroductionThe busbar trunking system (from 800A), both feeder and plug-in, shall be sandwich construction. All busbar trunking products and fittings (straight length, elbow, tees, flanged ends, cable tap box and circuit breaker, etc.) shall be in accordance with IEC 60439:2005 or UL857 and from the same manufacturer as the busbar trunking system. The degree of protection of the busbar trunking system should be IP54 in accordance to IEC 60529.Rated operation voltage of the busbar trunking is 1000V. 3 Phase, 4 Wire with 50% capacity continual integral/internal earth busbar. The neutral conductor should have the same cross-sectional area as the phase conductor (3P 4W 100%N + 50%E). The earth busbar must be one continuous piece without bolting on housing.ApplicationBusway is used to transmit power instead of conventional power cable.

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