CORP-180 Specificaton-Drawing of FRP

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TECHNICAL SPECIFICATIONS
11KV FRP "V" Type Cross Arm and Top Hamper
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The Cross Arm to be $upplied against this specification shall be suitable for
satisfactory continuous ~peration under the following service conditions.
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a.
b.
c.
d.
e.
f.
g.
Maximum ambie~ temperature (Degree C).
Relative humidity (%).
Maximum annual 'rainfall (mm).
Maximum wind pr!'lssure (Kg.lSq.m).
Maximum altitudei.;abovemean sea level (Meters).
Seismic level (Horizontal acceleration).
Climatic Conditions: Moderately hot and humid tropical
climate conducive' to rust and fungus growth.
h. Ref. Ambient temperature for temperature rise (Degree C).
50
100
1450
150
1000
0.30
50
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3. APPLICABLE STANDARDS:
a. FRP 'V' X'arm and Top Hamper.
Unless otherwise imentioned in this specification, the raw materials used
shall comply with IS : 13410, IS : 10192 - 1982 and IS : 6746 - 1972 or
their latest version. of other applicable standards for polymers materials.
b. M.S. steel (M.S. Flat) for clamp.
The standard for M.S.
Flat shall be IS: 2062/1992.
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c. M.S. Bolts & Nuts.
The Standard for bolts & Nuts [Hexagonal Nut] shall be as per IS:
1363/84.
II
d. Hot dip galvanized
Galvanization shall be carried out by hot dip method as per IS:
4826/1979.
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4. SHAPE &''SIZE:
a. The cross arms and Top Hamper shall be of V Shape having molded flat
surfaces with holes for Pin Insulator & Pole 8ack Clamp fixing. The length
shall be suitable for installation of pin insulators @ 1070 mm c/c.
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<ITach.specilication~11
KV FAP, V Cross & Top Hamper
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b. The cross arms and Top hamper shall have two holes of 18mm dia for
fixing of pin insulators. The centre-to-centre distance between the holes
shall be 1070 mm and holes shall be in the middle of the top width of
cross arm.
c. The cross arm a[ld Top Hamper shall have wall thickness of min 5 mm
excluding ribs / stiffeners, tie beams and certain design features like hole
etc.
5. GENERAL REQUIREMENTS:
it
The cross arms ani:rTop Hamper shall be made from good quality'
fiberglass and plastic ingredients conforming to requirements of IS 10192
unless otherwise stated in this specification. It shall be suitable for
outdoor application and shall be manufactured by automatic moulding
process.
b. The cross arms', shall have smooth surface finish and the cut crosssection shall give a homogeneous appearance.
c. The cross arms and Top Hamper shall be of light colour preferabfy of off
white colour so as not to attract birds. It shall not corrode while in contact
with steel filtingsltixtures, PSG. Poles and aluminum conductor.
d. Gross arms and :Hamper with Ultra Violet resistant Poly Urethane coating
shall be supplied.
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6. MECHANICAL PROPERTIES:
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a. The cross arms shall be able to withstand a vertical load of 300 kg
applied at each10f the two points coinciding with the centre of the pin
insulators on bq.th sides as shown in the enclosed drawing. For the
purpose of this test, the cross arm shall be mounted on a support with
200 mm centre-to-centre distance between clamp bolts (16 mm dial. With
the application of this load, no damage should occur to the cross arm and
it should remain ,serviceable.
b. In the other dire~tion, the cross arm should be able to withstand a load of
not less than 100 Kg. applied on both sides as shown in the drawing.
c. 'For improving the mechanical strength, Tie Beam moulded/Bolted to "V"
shape shall be 'provided as shown in drawing. Bolting shall be with M6
size bolts min. 21 nos. per end.
d. Pin insulators centre & hole position where the cross arm is fixed to the
PSG pole as well as overall V Shape shall invariably remain same as
shown in drawiri'g so as to maintain required clearances.
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•..Tech.specllicatlon-11
KV FRP. V Cross'& Top Hamper
2/4
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7.
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TESTS:
The cross arms ~hall be subjected to the following tests as per IS ; 101921982, IS;6746-1~72 and IS;13410-1992.
a. Type Tests
The followino tests sha II constitute t h e tests;
Sr. !
Particplars.
Reference Standard
Required Value.
No. i
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1
I Visual Insoection
Free from Cracks and Smooth finish.
2
Dimensional check
Dimension asoer drawinCi (approved)
3
Load test
No Damage
Clause
X ; 300kg
5.1 & 5.2
Y -100kg
4
45 KJ/m"
1-'-- Impact Stiennth
IS;13410
5
Tensile Streng!h
50 MPa
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6
Comparative
300V
.
Trackino .,;..
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7
8
9
10
11
12
Specific Gravity
' Water absorntion
Cross
" Breaking
strenath
, Compressive
I Strenqth
Insulation
Resistance
Flammability
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0.25%
160 N/mm2
IS;10192
,
200 N/mm"
500 M Ohms.
As per IS:67'46-1972
Self
Extinauishino,_
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b.
Acceptance
& Routine tests
,
The fallowinq tests shall constitute the Acceptance & Routine Tests;Sr.
Particulars.
Reference Standard
Required Value.
No.
I
1
i Visual Inspection
Free from Cracks and Smooth finish.
2
Dimensional check
Dimension A~er
drawina !aooroved)
3
Load test'!!
Clause
X ; 300kg
No Damage
5.1 & 5.2
Y - 100kn
4
Impact StrerlOth
45 KJ/m"
IS;13410
5
Tensile Strenoth
50 MPa
....
6
ComparatiVe'
300V
Trackinq "
7
Specific Gravitv
1.8
8
Water absbrotion
0.25%
,i
9
Cross
!Breaking
160 N/mm2
strenath
IS:l0192
10
Compressive
200 N/mm2
Strenath
11
Insulation'
500 M Ohms.
_., '. Resistance
12
Flammability
As per IS;6746-1972
Self
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The routine and:acceptance
tests should
chosen at random out of every lot.
J.r" ..Tech.specUication-11
KV FAP, V Cross &"Top Hamper
Extinauishina.
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be performed on one sample
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b. MARKING:
.
The following information'shail be marked on each cross arm:
a. Manufacturer's name or trade mark.
b. Year of manufacture.
c. PACKING:
The FRP cross arms will~e packed in quantities of 10 to 20. Each cross arm will
be covered with stretch wrapping film. The items so wound will be grouped as
per numbers per packet. The information like product quantity should be
mentioned on the packets.
10. GI Fixing clamp [Side Clamp]
GI Fixing clamps [Side clamp] of size 50 x 6 mm suitable for fixing of (a) X'arm
and (b) Top hamper as 200 KG PSC pole with GI Bolts & Nuts of applicable
size.
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a) GI fixing clamps shall be suitable for firmly fixing of FRP 'V' X'arm and FRP
Top Hamper on the 200 KG PSC poles.
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b) Necessary holes shall be duly drilled on the clamps before galvanizing.
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c) The galvanized shall be carried by hot dip method or other suitable methods.
d) Galvanizing tests shall1be carried out on sample for determining galvanize as
per IS : 4826/1979.
II
e) Electroplated clamps and bolts & Nuts shall not be acceptable .
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,;;:,., iTech.specificabon
..11 KV FAP, V Cross & Top Hamper
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Schedule of item to be used in V cross arms
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DescriptiOll0f
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material
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11 KVFRP v cross arm
No
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2
11 KV FRPTop hamper
No
1
3
GI D clamp for 200KG PSCpole
No
2
No
2
No
2
No
1
G.1. Bolts & Nuts 65x16mm with 2 nos of GI
4
washers per bolt
G.1. Bolts & Nuts 115x16mm with 2 nos of GI
5
washers per bolt
G.1. Bolts & Nuts 180x16mm with 2 nos of GI
6
washers per bolt
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CROSS ARM ~ TOP HAMPER
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INSULATO~
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