U channel cross-arm for 33kV
Any standard equivalent to GB/T 707 1988, 80x43, 5/8 and 100x48, 5.3/8.5 is accepted.For suspension, T-off, angle and dead end assembly shall have a cross section dimension of 80 x 43 x 5/8mmFor transformer base U-cross arms shall have a dimension of 100x48x5.3/8.5U-cross arms manufactured for suspension, T-off, angle, dead end and transformer baseassembly as per the drawingTo protect U-cross arms against corrosion U-cross arms shall be hot dip-galvanizedYield strength of U-cross arm 240N/mm2Test for ultimate tensile strength
Test for yield stress
Percentage elongation test
Bend test
Chemical composition test
Galvanization tests thickness of Zn coating
Weight of Zn Coating
Uniformity of Zn coating
Adhesion test of Zn coating
Visual inspection
Weight verification
Dead end hook 382
Hook threaded nominal diameter (A) 16mmMinor threaded diameter (W) 14Thickness of nut (M), washer diameter and thickness as per BS standardYield strength of pin must be 240N/mm2LV Hook from corrosion it shall be hot dip-galvanizedVisual inspectionSize inspection Galvanizing testStrength testSuspension hook M16-380Hook threaded nominal diameter (A) 16mmMinor threaded diameter (W) 14Thickness of nut (M), washer diameter and thickness as per BS standardYield strength of pin must be 240N/mm2To protect LV Hook from corrosion it shall be hot dip-galvanizedTestingVisual inspectionSize inspectionGalvanizing testStrength test
The following testing shall be carried outDead End Clamp ,Anchoring Clamp
The clamps should be designed to Anchor LV AB cable with insulated messenger. The clamp should anchor/hold the neutral messenger without damaging the insulation.The clamp should conform to the standard NFC 33041 and 33042 or equivalent. The clamp body should be made of corrosion resistant Aluminium alloy, bail should be of stainless steel
and self adjusting wedges should be weather and UV resistant polymer.Anchoring assemblies are used to firmly attach the messenger of ABC to a support and transmit the mechanical tension at the end of a run or to the supporting structures at a major change in direction. neutral messenger should be fixed by an adjustable grip device.
The suspension clamp shall be manufactured from weather and UV light resistant reinforced
nylon and aluminum alloy. The clamp should provide an additional insulation between the
cable and the pole.
Clamps should be fixed with pole by eyehook/bracket. Breaking load should not be less than
15kN
Suspension Assembly is used for supporting an ABC by installation on the messenger at an
intermediate point of support such as a pole. It can accommodate small angles of deviation up
to 30o. The clamp should hold insulated messenger of diameter range from 6mm up to 12 mm.
Visual examination
Dimensional and material verification
Tensile strength
Dielectric voltage test
Climatic & corrosion ageing
Endurance test under mechanical and thermal stresses
Electrical ageing
TYPE:APG-C4
NAME:Parallel groove clamp APG-C4
Specification
Material | | |
Material standard | | |
Range of conductor cross-section | 16…50/2.5…35 | |
Range of conductor diameter, Al/Cu | mm2 | |
Tensile strength | KN | 5 |
Thickness of zinc coating, | mm | 43 |
Test voltage at 50Hz for one minute in water | kV | 6 |
GeneralCoatingMaterialDimensionsHeightLength"A"Weight Al 35-300mm² Size 105*65mm Tri-bolts Bolt M10*60 Weight 560g