DELTA ELECTRIC FZE sharjah

Any joint in an electric conductor is the weakest point, as far as the efficiency of current carrying is concerned, decided by the level and uniformity of contact pressure, the extent of the contact area, the joint resistance and ultimately the conductivity and thermal performance, and hence is given the maximum technical considerations in its design, in  DELTABAR. DELTABAR  joint are uniquely design with :- - Two numbers straight fish-plates, one on either side of each phase and neutral conductor - The fish plates having more cross sectional area than that of the conductor - More than usual overlap of fish plates with conductors - Phase segregation by high quality molded phase barriers 4 clamps, 4bolts steel clamping (external bolting). This ensures a thermally, electrically and mechani- cally proper and efficient joint design. The joints are covered by aluminium covers and the left over annular space are filled up by the same resin cast mix used in the feeder elements, thus making it life- time- maintenance free.

Depending on load condition and the external environment, the conductors may have a tendency to contract/expand (Thermal expansion). Specially designed expansion joints are provided to suppress those effects. Expansion joints are recommended on every 40  m runs of straight conductor and also when the busway crosses the building expansion joints. These joints are normally   designed   for +/-30mm   length.   Special designs are also available for up to +/-90mm.

Transverse Joints/Building Cross-over elements are provided , where the Busway crosses a building joint. The element will allow flexibility to the Busway Systems otherwise rigid & non-flexible Cast-Resin Busway, to accommodate the Non-uniform Building oscillation due to wind load. To ensure that the Transverse Element functions effectively, it shall be ensured that the Feeder Element crosses the Building only in a way that its conductor are oriented Vertically inside.

The feeder elements are of standardized design of 3.5m maximum length(shorter lengths are designed based on requirement), with the whole range up to 3200A being covered in two frame sizes - decided by two standardized enclosures one accommodating upto1600A with single conductor per phase(Frame size-1) and the other up to 3200A with two conductors per phase(Frame size-2), the width of the conductor standardized to 120mm in both frame sizes, their thickness varying from 3 to 7mm to cater to different current ratings. For ratings above 3200A and up to 6400A, DELTABAR design envisages use of two parallel runs of elements of frame size 2. Each bend-free phase and neutral conductor is individually color-sleeved using special, thermally & dielectrically high quality heat shrinkable sleeves and the conductors are spaced apart at a uniform gap of 10mm between the conductors

DELTABAR flanges are compact, with sealable metallic mounting body & hidden mounting provisions. The terminating conductor elements are tin-plated & holed for connection to switchgear termination.

Elbows are standardized to dimensions of 482x482mm and are available in flat-wise & edge-wise types. Constructionally they are typical to feeder elements with projecting out conductors, suitable for standard joint connections. Unless unavoidable, flat wise elbows are not recom- mended, as they reduce the current-carrying efficiency of the system, due to 90o bending of the conductors, which results in broken conductor molecules. Typical Combination elbows - Offsets, Combination & Obtuse elements are designed, where critical site condi- tions does not allow connection of standard elbows. Also depending on project requirement, elbow joints can also be provided to cater to very short length elbow.