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Page 1
Vijai Electricals Ltd.
SCHEME: Projects Division
PROJECT:
CUSTOMER:
CONSULTANT:CONTRACTOR:
LOA No. :
GUARANTEED TECHNICAL PARTICULARS OF
12KV,70KN DISC INSULATOR(B&S TYPE)
S.NO DESCRIPTION UNIT PARTICULARS
1 Manufacturers Name & Address
2
3 Type of insulator offered Type B
4 Over all Dimensions (mm)
a) Spacing mm
b) Diameter mm
5 Nominal System Voltage KV 11
6 Highest System Voltage KV 12
7 Electro-mechanical Failing Load KN 70
8 Dry Power Frequency 1 Min. Withstand Voltage KV
9 Wet Power Frequency 1 Min. Withstand Voltage KV 35
10 Dry Power Frequency Flashover Voltage KV
11 Wet Power Frequency Flashover Voltage KV
12 Power frequency Puncture withstand Voltage KV
13 a) Min. Creepage Distance (min) mm
b)Protected Creepage Distance mm
14 Impulse withstand Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp 75
1.2/50 Micro Sec. Wave of Negative Polarity KVp
15 50% Impulse flashover Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp
Standard According to which Porcelain Insulators be
Manufactured and Tested
IS: 731-1971 and REC
Specification No.3/1993
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Page 3
15 Galvanising test.
16 Thermal mechanical performance test IEC-383-1-1993
17 Radio Interference test
Routine tests:
1 Visual examination
3 Mechanical Routine test4 Electrical Routine test
5 Hydraulic Internal Pressure test on shells
Acceptance tests:
1 Verification of Dimensions
2 Temperature cycle Test
3 24 hours mechanical strength test
4 Electro-Mechanical Failing Load Test
5 Power Frequency Puncture Voltage test
6 Porosity test7 Galvanising test
DRAWING AS PER REC Specification No.3/1971
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6.5
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Page 9
Vijai Electricals Ltd.
SCHEME: Projects Division
PROJECT:
CUSTOMER:
CONSULTANT:CONTRACTOR:
LOA No. :
GUARANTEED TECHNICAL PARTICULARS OF
12KV,45KN DISC INSULATOR(T&C TYPE)
S.NO DESCRIPTION UNIT PARTICULARS
1 Manufacturers Name & Address
2
3 Type of insulator offered Type B
4 Over all Dimensions (mm)
a) Spacing mm
b) Diameter mm
5 Nominal System Voltage KV 11
6 Highest System Voltage KV 12
7 Electro-mechanical Failing Load KN 45
8 Dry Power Frequency 1 Min. Withstand Voltage KV
9 Wet Power Frequency 1 Min. Withstand Voltage KV 35
10 Dry Power Frequency Flashover Voltage KV
11 Wet Power Frequency Flashover Voltage KV
12 Power frequency Puncture withstand Voltage KV
13 a) Min. Creepage Distance (min) mm
b)Protected Creepage Distance mm
14 Impulse withstand Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp 75
1.2/50 Micro Sec. Wave of Negative Polarity KVp
15 50% Impulse flashover Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp
Standard According to which Porcelain Insulators be
Manufactured and Tested
IS: 731-1971 and REC
Specification No.3/1993
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Page 10
1.2/50 Micro Sec. Wave of Negative Polarity KVp
16 Minimum Visible Discharge Test Voltage KV 9
17 Ferrous parts M.C.I
Tongue pin Forged IronTongue pin designation mm
16
Cotter pin
Split pin
18 Net Weight (Approx.) Kg
19 Colour of Glaze BROWN
20 Tolerance as per specification()
21 Galvanising & weight of zinc coating on metal parts
22
23 Minimum purity of Zinc coating %
24 Marking details
25 Packing details
a) Type of Packing
b) No. of Insulators in each crate Nos
c) No. of crates in each packing Nos
d) Weight of each packing approx. Kgs
23 Offered material fully meets customer specification Yes
24 Drawing No.
Tests:
Type tests:
1 Visual examination
2 Verification of dimensions
3 Visible discharge test
4 Lightning Impulse Voltage withstand Test.
5 50% Lightning Impulse Voltage Flashover Test
6 Dry power frequency Voltage withstand Test.
7 Wet Power frequency Voltage withstand Test
8 Dry power frequency Voltage Flashover Test.
9 Wet Power frequency Voltage flashover Test
10 Temperature Cycle Test
11 Electro-Mechanical Failing Load Test IEC-383 Cl.No.18&19
12 24 hours mechanical strength test
13 Porosity test
14 Power Frequency Puncture Voltage test
Kg/mm2
Uniformity of Zinc coating to be checked as per IS:2633-1986
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Page 11
15 Galvanising test.
16 Thermal mechanical performance test IEC-383-1-1993
17 Radio Interference test
Routine tests:
1 Visual examination
3 Mechanical Routine test4 Electrical Routine test
5 Hydraulic Internal Pressure test on shells
Acceptance tests:
1 Verification of Dimensions
2 Temperature cycle Test
3 24 hours mechanical strength test
4 Electro-Mechanical Failing Load Test
5 Power Frequency Puncture Voltage test
6 Porosity test7 Galvanising test
DRAWING AS PER REC Specification No.3/1971
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6.5
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Page 15
Vijai Electricals Ltd.
SCHEME: Projects Division
PROJECT:
CUSTOMER:
CONSULTANT:CONTRACTOR:
LOA No. :
GUARANTEED TECHNICAL PARTICULARS OF
12KV,5KN PIN INSULATOR
S.NO DESCRIPTION UNIT PARTICULARS
1 Manufacturers Name & Address
2
3 Type of insulator offered Type B
4 Over all Dimensions (mm)
a) Height mm
b) Maximum Diameter mm
c) Conductor groove in mm mm
5 Nominal System Voltage KV 11
6 Highest System Voltage KV 12
7 Minimum Mechanical Failing Load KN 5
8 Dry Power Frequency 1 Min. Withstand Voltage (kV) KV
9 Wet Power Frequency 1 Min. Withstand Voltage (kV) KV 35
10 Dry Power Frequency Flashover Voltage KV
11 Wet Power Frequency Flashover Voltage KV
12 Power frequency Puncture withstand Voltage KV 105
13 Min. Creepage Distance (min) mm 230 mm
14 Impulse withstand Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp 75
1.2/50 Micro Sec. Wave of Negative Polarity KVp
Standard According to which Porcelain Insulators be
Manufactured and Tested
IS: 731-1971 and REC
Specification No.3/1993
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Page 16
15 50% Impulse flashover Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp
1.2/50 Micro Sec. Wave of Negative Polarity KVp
16 Thimble:
a) Type of material
b) Type
c) Type of threads
17 Minimum Visible Discharge Test Voltage KV 9
18 Net Weight (Approx.) Kg
19 Colour of Glaze BROWN
20 Tolerance as per specification()
21 Marking details
22 Packing details
a) Type of Packing
b) No. of Insulators in each crate Nos
c) No. of crates in each packing Nos
d) Weight of each packing approx. Kgs
23 Offered material fully meets customer specification Yes
24 Drawing No.
Tests:
Type tests:
1 Visual examination
2 Verification of dimensions
3 Visible discharge test
4 Lightning Impulse Voltage withstand Test.
5 50% Lightning Impulse Voltage Flashover Test
6 Dry power frequency Voltage withstand Test.7 Wet Power frequency Voltage withstand Test
8 Dry power frequency Voltage Flashover Test.
9 Wet Power frequency Voltage flashover Test
10 Temperature Cycle Test
11 Mechanical Failing Load Test
12 Porosity test
13 Power Frequency Puncture Voltage test
14 Galvanising test.
Routine tests:
1 Visual examination
2 Electrical Routine test
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Page 17
Acceptance tests:
1 Verification of Dimensions
2 Temperature cycle Test
3 Mechanical failing load test
4 Power Frequency Puncture Voltage test
5 Porosity test6 Galvanising test
DRAWING AS PER REC Specification No.3/1971
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6.5
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Vijai Electricals Ltd.
SCHEME: Projects Division
PROJECT:
CUSTOMER:
CONSULTANT:CONTRACTOR:
LOA No. :
GUARANTEED TECHNICAL PARTICULARS OF
36KV,10KN PIN INSULATOR
S.NO DESCRIPTION UNIT PARTICULARS
1 Manufacturers Name & Address
2 IS: 731-1971
3 Type of insulator offered Type B
4 Over all Dimensions (mm)
a) Height mm
b) Maximum Diameter mm
c) Conductor groove in mm mm
5 Nominal System Voltage KV 33
6 Highest System Voltage KV 36
7 Minimum Mechanical Failing Load KN 10
8 Dry Power Frequency 1 Min. Withstand Voltage (kV) KV
9 Wet Power Frequency 1 Min. Withstand Voltage (kV) KV 75
10 Dry Power Frequency Flashover Voltage KV
11 Wet Power Frequency Flashover Voltage KV
12 Power frequency Puncture withstand Voltage KV 180
13 Min. Creepage Distance (min) mm 580
14 Impulse withstand Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp 170
1.2/50 Micro Sec. Wave of Negative Polarity KVp
15 50% Impulse flashover Voltage :
1.2/50 Micro Sec. Wave of Positive Polarity KVp
Standard According to which Porcelain Insulators be
Manufactured and Tested
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Page 22
1.2/50 Micro Sec. Wave of Negative Polarity KVp
16 Thimble:
a) Type of material
b) Type
c) Type of threads
17 Minimum Visible Discharge Test Voltage KV 27
18 Net Weight (Approx.) Kg
19 Colour of Glaze BROWN
20 Tolerance as per specification()
21 Marking details
22 Packing details
a) Type of Packing
b) No. of Insulators in each crate Nos
c) No. of crates in each packing Nos
d) Weight of each packing approx. Kgs
23 Offered material fully meets customer specification Yes
24 Drawing No.
Tests:
Type tests:
1 Visual examination
2 Verification of dimensions
3 Visible discharge test4 Lightning Impulse Voltage withstand Test.
5 50% Lightning Impulse Voltage Flashover Test
6 Dry power frequency Voltage withstand Test.7 Wet Power frequency Voltage withstand Test
8 Dry power frequency Voltage Flashover Test.
9 Wet Power frequency Voltage flashover Test
10 Temperature Cycle Test
11 Mechanical Failing Load Test
12 Porosity test
13 Power Frequency Puncture Voltage test
14 Galvanising test.Routine tests:
1 Visual examination
2 Electrical Routine test
Acceptance tests:
1 Verification of Dimensions
2 Temperature cycle Test
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3 Mechanical failing load test
4 Power Frequency Puncture Voltage test
5 Porosity test
6 Galvanising test
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