Big Collar, Type 1
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Quick Details
Product Details
Standard
BS or equivalent is acceptable.
Design
– Big collar nominal diameter (d) 16 mm and lead 2.
– Minor threaded diameter (dk) 14mm.
– Thickness of head (k) as per BS standard
– The nut shall fit big collar threaded diameter.
– Thickness of nut head (m) as per BS standard
– Width of head across flats (s) as per BS standard.
– Width of head across angle (e) as per BS standard
– Washer diameter (d1) as per BS standard.
– Thickness of washer as per BS standard.
– Inside diameter of washer (h) as per BS standard
To protect corrosion big collar shall be well hot dip-galvanized.
. Guaranteed Value
The following values are guaranteed by the manufacturers as stipulated by the guaranteed characteristics table
* Threads of big collar shall be according to the design dimension.
* Each and every dimension according to the given drawing.
Testing
The following testing shall be carried out.
a. Visual inspection
b. Size inspection
c. Galvanizing test
Tie Strap
The strap shall have a cross section dimension of 50 x 5 mm
The strap shall have a cross section dimension of 50 x 5 mm.
The strap manufactured for suspension/intermediate assembly according to the given drawing (see the drawing)
Yield strength of tie strap must be 240N/mm2.
To protect tie strap from corrosion it shall be hot dip-galvanized.
Guaranteed Value
The following values are guaranteed by the manufacturers as stipulated by the guaranteed characteristics table
§ Each and every dimension
§ Material strength.
3.7.4. Testing
The following testing must be carried out.
a. Visual inspection
b. Size and dimension verification.
U channel cross-arm for 33kV
Any standard equivalent to GB/T 707 1988, 80×43, 5/8 and 100×48, 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 5/8mm
For transformer base U-cross arms shall have a dimension of 100x48x5.3/8.5
U-cross arms manufactured for suspension, T-off, angle, dead end and transformer base
assembly as per the drawing
To protect U-cross arms against corrosion U-cross arms shall be hot dip-galvanized
Yield strength of U-cross arm 240N/mm2
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) 16mm
Minor threaded diameter (W) 14
Thickness of nut (M), washer diameter and thickness as per BS standard
Yield strength of pin must be 240N/mm2
LV Hook from corrosion it shall be hot dip-galvanized
Visual inspection
Size inspection
Galvanizing test
Strength test
Suspension hook M16-380
Hook threaded nominal diameter (A) 16mm
Minor threaded diameter (W) 14
Thickness of nut (M), washer diameter and thickness as per BS standard
Yield strength of pin must be 240N/mm2
To protect LV Hook from corrosion it shall be hot dip-galvanized
Testing
Visual inspection
Size inspection
Galvanizing test
Strength test
The following testing shall be carried out
Dead 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.
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 |
Al 35-300mm² Size 105*65mm Tri-bolts Bolt M10*60 Weight 560g
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