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ANSI Strain insulators tor lines

 

Fig No.   2 2 2 1
CLASS ANSI 54-1 54-2 54-3 54-4
Main Dimansions(mm) H 89 108 140 171
h 44 57 67 79
h1 64 76 103 114
D 64 73 86 89
d 44 54 60 60
d1 16 22 25 25
Mechanical Failing Load(KN) 44 53 89 89
Leakage Distance(mm) 41 47 57 76
Flashover Voltage Power Frequency Dry(kv) 25 30 35 40
Wet(kv) 12 15 18 23
Weight(kg) 0.5 0.65 1.2 2.2
  

ANSI SPOOL INSULATORS

 

Fig No.   1 2 1 1 3
CLASS ANSI 53-1 53-2 53-3 53-4 53-5
Main Dimansions(mm) H 54 76 81 76 105
h 27 38 40.5 38 52.5
D 57 79 76 105 102
d 45 45 45 73 73
d1 18 18 18 18 18
d2 22 24 24 24 24
R 11 18 11 16 11
Mechanical Failing Load(KN) 8.9 13.3 17.8 20 26.7
Minimun Flashover Voltage Power Frequency Dry(kv) 20 25 25 25 35
Wet(kv) Upright 8 12 12 12 18
Level 10 15 15 15 25
Weight(kg) 0.22 0.55 0.60 1.15 1.20
    

ANSI & BS Spindle of pin type insulators for high voltage

 

Fig No. Main Dimension in (mm) Mechianical strength (KN) Class ANSI Weight kg
H D h h1 h2 a d1
1 330 76 178 51 76   20 11 56-1 1.9
1 356 76 178 51 76 34.9 20 9 56-2 2.2
1 4.7 89 178 51 76 34.9 20 10 56-3 2.5
1 432 89 178 51 76 34.9 20 9 56-4 3.25
1 343 45 165 51 76 34.9 20 6 56-2 1.6
2 198 76 45 51 40 34.9 20 11 56-1 1.54
2 223 76 45 51 40 34.9 20 9 56-2 1.87
2 274 89 45 51 40 34.9 20 10 56-3 2.17
2 299 89 45 51 40 34.9 20 9 56-4 2.7
2 223 45 45 51 40 34.9 20 6 56-2 1.3
1 356 76 76 51 76 34.9 16 5 56-2 1.9
3 305 38 140 74 44.45   20 5 BS small steel 1
3 352 41 127 80 44.45 18.29 22 5 1.2
3 215 38 50 44 44.45 18.29 20 5 0.75
4 261 60 46 47 41   22 10 BS large steel 1.5
4 369 61 140 47 78 27.78 22 10 2
  

DIN PIN TYPE INSULATORS FOR HIGH VOLTAGE

 

Fig No. 1 1 1 2
TYPE st-10/J st-15/J st-20/J P-20-D
Main Dimansions (mm) H 130 150 185 185
h 55 60 65 52.63
d 135 150 175 175
d 31 31 35 27.78
R1 10 10 10 10
R2 12.5 12.5 12.5 12.5
Normal voltage (kV) 10 15 20 20
Creepege Distance(mm) 240 270 340 340
Power-Freguency puncture voltage(kV) 110 120 140 140
Electronical Faling load (KN) 12 12 14.7 14.7
Flshover (min) Power Frequency voltage Dry(kv) 70 75 90 80
Wet(kv) 42 53 65 50
50% Critical Impulse 100 110 130 130
Weight(kg) 1.5 2.7 3.4 3.8
  

IEC DIN PIN TYPE INSULATORS FOR HIGH VOLTAGE

 

Type Fig NO. Mian Demension in (mm) leakage distance Minimun breaking load One miute with stand voltage wet Power Fregu-aency Voltage Critical Impulse flashover Pun-cture Volt-
age
D H D1 d min d1 min a b R Dry Wet Test KV Max Riv At
mm mm mm mm mm mm mm mm mm kN kV kV kV kV kV kV
E-80 1 80 85 40 16 / 38 38 7.5 120 12.5 10 - - - - -
E-95 1 95 97 50 16 / 43 32 13 140 12.5 10 - - - - -
N-80 2 80 87 42 19 21 38 30 7.5 120 12.5 10 - - - - -
N-95 2 95 95 50 22 24 41 35 13 140 12.5 10 - - - - -
N95/2 3 95 100 50 22 24 41 35 10 160 12.5 10 - - - - -
N95/3 4 102 120 60 80 25.4   51 14 230 10 34 70 45 100 120 95
N95/4 4 130 152 80 100 25.4   51 14 318 13.6 50 80 55 130 150 115
  

IEC Porcelain disc suspensiion insulators

 

Class Type Fig.NO. Unit spacing (mm) Disc diam-eter (mm) Leak-age dista-
nce (mm)		 Rated
E & M failing load
(kN)		 Rou-ntine
ten-
sion
load
(KN)		 Impact failing load
(mm)		 Wet
Power Frequ-aency
With-
stand Voltage
KV		 Ling-thing Imp-
ulse
with
stand Volt-
age
KV		 Radio Influece Voltage Power-
freg
punc-
ture voltage
(KV)
Test Volt-
age 
To
Gro-und KV		 Max Riv At 1 MHz V
U40B 1 110 170 190 40 20 5 30 75 7.5 50 90
U40BP 1 110 210 295 40 20 5 35 90 10 50 90
U70BS 3 127 255 295 70 35 6 40 100 10 50 110
U70BL 3 146 255 295 70 35 6 40 100 10 50 110
U70C 2 146 255 295 70 35 6 40 100 10 50 110
U70BLP 3 146 280 440 70 35 6 42 110 10 50 120
U70CP 2 146 280 440 70 35 6 42 110 10 50 120
U100BS 3 127 255 295 100 50 7 40 100 10 50 110
U100BL 3 146 255 295 100 50 7 40 100 10 50 110
U100C 2 146 255 295 100 50 7 40 100 10 50 110
U100BLP 3 146 255 440 100 50 7 42 110 10 50 120
U100CP 2 146 255 440 100 50 7 42 110 10 50 120
U120B 3 146 280 295 120 60 7 40 100 10 50 110
U120C 2 146 280 295 120 60 7 40 100 10 50 110
U120BP 3 146 280 440 120 60 7 42 110 10 50 120
U120CP 2 146 280 440 120 60 7 42 110 10 50 120
U160BS 4 146 280 315 160 60 10 40 100 10 50 110
U160BSP 4 146 330 440 160 80 10 45 125 10 50 110
U160BL 4 146 280 340 160 80 10 42 105 10 50 110
U160BLP 4 146 330 525 160 80 10 45 130 10 50 110
U210B 4 170 330 370 210 105 10 42 110 10 50 120
U210BP 4 170 330 525 210 105 10 45 130 10 50 120
  

IEC ANTI-POLLUTION PORCEAIN DISC SUSPENSION INSULATORS

 

Cat No. Fig No Coup-Ling size Main dimension mm Leakage distance(mm) Combined M&E stength KN Radio Influece Voltage Power-freguency puncture voltage (kV)
D H 1 Minute wet power freguency kV Lighting impulse kV
XHP-70 1 6c 255 146 430 70 42 120 120
XHP-70C 2 16c 255 146 430 70 42 120 120
XHP-80 1 16 255 146 430 80 42 120 120
XHP-80C 2 16c 255 146 430 80 42 120 120
XHP-100 1 16 255 146 430 100 45 120 120
XHP100C 2 16c 255 146 430 100 45 120 120
XHP-120 1 16 255 160 430 120 45 120 120
XHP120C 2 16c 255 160 430 120 45 120 120
XHP-125 1 20 280 160 430 125 45 120 120
XHP125C 2 19c 280 160 430 125 45 120 120
XHP-160 1 20 300 160 450 160 45 130 120
XHP160C 2 19c 300 170 450 160 45 130 120
XHP-210 1 20 300 170 480 210 45 130 120
XHP210C 2 22c 300 178 480 210 45 130 120
XHP-300 1 24 320 195 480 300 45 130 120
XHP-400 1 28 380 220 550 400 50 140 140
  

AS HIGH VOLTAGE PIN TYPE INSULATORS

 

Type Fig Main Dimension in (mm) Creepage Distance Lighting Impuse Withstand Voltage KV Wet Power Freguancy Withstand Voltage KV Minimun Bending Failing Load KN Recom Mended Pin Type Designation
H D
SLP/11/180 1 110 150 180 105 30 7 A/130/7 180S7
ALP/11/275 2 160 150 275 105 30 7 C/150/7 275A7
ALP/22/450 3 200 160 450 150 50 11 C/200/11 450A11
ALP/22/490 3 250 165 490 160 50 11 C/200/11 490A11
FLP/22/480 4 200 250 480 150 50 11 C/150/11 480F11
ALP/22/520 3 210 200 520 150 50 11 C/200/11 520F11
ALP/33/710 3 265 220 710 220 90 11 C/300/7 710A11
ALP/33/920 3 320 240 920 220 90 11 C/300/7 920A11
  

GB PORCELAIN DISC SUSPENSION INSULATORS

 

Type X-30/c XP-60/c XP-70/c XP-70/T XP-100 XP-100
Fig 1/2 1/2 1/2 3 1 1
Main Dimansions (mm) Heigh Strutre Declarate 140 146 146 146 146 155
Distance Declarative Ceramic 200 255 255 255 255 255
Coupling To Type 16/16c 16/16c 16/16c 16 16 20
Minimum Creepage Distance 200 280 295 295 295 305
Electromechanical Failing Load(KV) 40 60 70 70 100 160
Impact Strength(N.M) - - 565 565 678 1017
Lighting Full Wave Impulse Withstand Voltage(r.m.s )minimum(KV) 90 100 100 100 100 100
One munute wet Power-Freguency Withstand Voltage(r.m.s)minimun(KV) 30 35 40 40 40 40
Power Freguency Puncture Voltage(KV) 90 110 110 110 110 110
Weight(kg) 3.5 5.5 5.3 5.4 5.6 6.8
The Old Models x-3/c x-4.5/c XP-7/c XP-7T XP-10 XP-16
  

GB SUSPENSION TYPE ANTI-POLLUTION INSULATORS FOR HIGH VOLTAGE

 

Type XWP2-60/c XWP2-70/T XWP2-70/c XWP-100 XWP-100
Fig 6/4 5 6/4 6 6
Main Dimansions (mm) Heigh Strutre Declarate 146 146 146 160/146 155/146
Distance Declarative Ceramic 255 255 255 255/280 280/255
Minimum Creepage Distance 400 400 400 400 400
Coupling To Type 16/16c - 16/16c 16 20
Electromechanical Failing Load(KV) 70 70 70 100 160
Full-Wave Impulse Flashover(Peak)/(KV) 120 120 120 120 120
Minimun Wet power Frenliency Flashover(r.m.s)/(KV)minimun 45 45 45 45 50
Power Freguency Puncture Voltage(KV) 120 110 110 120 120
Weight(kg) 7.2 7.2 8 8 9
  

IEC anti-pollution porcelain disc suspension insulators

 

Fig No. 1 1 2 2 3 2 4
Type P-10T/M P-15T/M PQ-10T/M PQ-10T/M P-20T/M PQ-20T/M PQ2-10T/M
Main Dimansions (mm) H 105 120 133 137 165 188 165
H1 176 180 183 185 235 235 209
H2 T/M 35/140 40/140 40/140 40/140 40/140 40/140 40/140
D 145 190 140 152 228 175 228
D1 M16 M20 M20 M20 M20 M20 M20
R1 11 13 13 13 14 14 19
R2 9 11 9.5 12.5 13 13 14
Normal Voltage 10 15 10 15 20 20 22
Greepage Distance 185 280 255 295 370 370 450
Lighting Impiuse Withstand Voltage 75 90 90 110 132 132 132
Power Freguency Wet Withstand 28 40 40 50 50 50 50
Puncture 95 98 130 135 140 140 145
Cantilever Withstand Strength 1.4   2 2 2 2 2
Cantilever Failing load 11 11 11 11 13 13 13
Weight(kg) 2.1/2.3 3.4/3.7 2.35/2.7 3/3.3 6.2/6.6 6.2/6.7 6.2/7.1
The Old Models     1025T/M P-15Y(T/M)   St-20Y/M 56-2T/M
Type Common Type Stand Pollution Type Common Type Stand Pollution Type

 

 

Cat Type SC-185 SC-210 SC-280 SC-10/2.5 SC1-10/2.5 S1-10/2.5 S-35/5.0 S2-35/5.0
Fig 1 1 1 2 2 3 3 3
Main Dimansions (mm) H 400 450 600 470 535 570 670 7.5
D 75 82 110 75 82 110 115 135
L 340 390 530 390 440 400 580 620
L1 315 365 490 315 365 320 490 520
L2 22 22 26 22 22 28 28 28
R 11 11 13 11 11 14 14 14
d1 18 18 22 18 18 18 22 22
d2 -- -- -- 6.5 6.5 11 11 11
h -- -- -- 14 14 140 140 140
a 68 72 90 40 40(30) 40(30) 40(35) 40(35)
Greepage Distance 320 380 700 320 380 360 700 1120
Lighting Impiuse Withstand Voltage 165 185 250 165 185 165 250 265
Wet Power Freguency withstanf/d voltage 45 50 85 45 50 45 85 100
Machanical Cantilever Failing Load 2.5 2.5 5 2.5 2.5 5 5 5
  

GB PORCELAIN POST INSULATORS

 

Type Fig.No. Main Dimension
H h1 h2 d D d1 d2 d3 d4 d5 a1 a2
ZA-7.2Y 1 165 - - - 90 64 M10 M6 M12 108 36 -
ZA-12Y 1 190 - - - 90 64 M10 M6 M12 108 36 -
ZN-7.2/4 2 100 18 20 - 85 2-M6 M12 - - - 18 -
ZN-12/8 2 120 18 25 - 105 2-M10 M16 - - - 24 -
ZN-24/8 2 230 18 35   160 2-M12 M20 - - - 36 -
ZL-12/4 3 160 10 20 M10 95 2-M8 M16 - - - 36 -
ZL-40.5/4 3 380 10 20 M10 90 2-MB M16 - - - 36 -
ZPB-12 4 188 10 13 - 170 2-M8 2-011 - - - 36 70
   

GB WIRING AND OTHER INSULATORS

   

SPOOL INSULATORS

 

Cat.No.(class ansi) fig.No Main dimensions Transverse strength(N) Low freguency voltage kV Weight (N)
wet flashover
H h D d d1 d2 R Day flashover Vertical horizontal
53-1 2 54 27 57 45 18 22 11 8,900 20 8 10 2.2
53-2 1 76 38 79 45 18 24 18 13,300 25 12 15 5.4
53-3 2 81 40.5 76 45 18 24 11 17,800 25 12 15 5.9
53-4 2 76 38 105 73 18 24 16 20,000 25 12 15 11.3
53-5 3 105 52.5 102 73 18 24 11 26,700 35 18 25 11.8
R-8 7 32   57 40 17.5   7     15 918 1.3
R-6 6 80   70 54 18   7 240 12 15 1350 3.9
R-2 5 76   80 39 17.5   17.5     15 2040 5.9
R-1 5 54   57 45 17.5   11     15 918 2.4
1617 4 65   76 45 17.5   9 9000 20 9 9 3.9
1618-1 4 75   89 45 17   13 10000 20 9 9  
1618-2 4 75   89   17   12.5 13000 25 12 12  
1617-2 4 67   73   16   14.3          
1617-1 4 65   78   17.5   12.5          
1618-3 4 88   95   22   16          

PORCELAIN STAY INSULATOR FOR LINES

 

Ansi class fig.No Leakage distance (mm) Mechanical failing load (KN) Power-frequency flashover voltage (kv) Weight (N)
Dry Wet
54-1 1
41/1 5"
8
44 25 12 4.9
54-2 2
47.6/1 7"
8
53 30 15 7.8
54-3 3
57/2 1"
4
89 35 18 12.5
54-4 4
67/3"  
 
89 40 23 17.6

GB SHACKLE INSULATORS GB SPOOL INSULATORS

 

Type Fig.No. Main Dimension Transverde strength Low freguency voltage
H D d d1 d2 R Dry Wet
ED-1 1 90 100 95 50 22 12 1.2 22 10
ED-2 1 75 80 75 42 20 10 1 18 9
ED-3 1 65 70 65 36 16 8 0.8 16 7
ED-4 1 50 60 55 30 16 6 0.5 14 6
EX-1 2 90 85 - 55 22 12 1.5 22 9
EX-2 2 75 70 - 45 20 10 1.2 18 8
EX-3 2 65 65 - 40 16 8 1 16 6
EX-4 2 50 55 - 35 16 6 0.7 14 5

 

GB PIN INSULATORS 

Type Fig No. H h h1 h2 D d1 d2 R R1
PD-1T 1 145 80 50 35 80 50 16 10 10
PD-1M 1 220 80 50 110 80 64 16 10 10
PD-2T 1 125 66 45 35 70 44 12 8 8
PD-2M 1 195 66 45 105 70 44 12 8 8
PD-2W 2 155 66 45 55 70 44 12 8 8

 

GB DRUM INSULATORS

Type Fig No. H h h1 D d1 d2 R
G-25 3 25 15 3 22 16 7 3
G-28 3 38 25 3 30 20 8 5
G-50 3 50 35 4 36 24 9 6
G-60 3 60 40 5 45 30 10 7.5
G-50 4 50 35 - 35 24 - 6

BS Shackle insulators

 

Fig No. 2 1 1 3 3 3
CLASS ANSI ED-2(c) ED-2(B) ED-2(B)1 1617 1618-1 1618-2
Main Dimansions(mm) H 80 76 76 65 75 75
D 80 89 89 76 89 89
d 50 48 48 46 55 55
d1 22 21 17.5 17.6 17 17
R 6 10 10 9 10 13
Mechanical Failing Load(KN) 13 12 12 9 10 13
Minimun Flashover Voltage Power Frequency Dry(kv) 25 25 25 20 20 25
Wet(kv) 15 12 12 9 9 12
Weight(kg) 0.50 0.50 0.50 0.4 - -

ANSI Low & medium voltage pin type insulators

 

 
CLASS ANSI

 

 		 57-1S
57-1L		 57-2S
57-2L		 57-3S
57-3L		 57-4S
57-4L		 57-5S
57-5L
Fig No. 3 4 5 1 2
Main Dimansions of the pin mm M16 M20(M16) M20 M20 M20
Creepage distance mm 356 559 737 1015 1145
Dry arcing distance mm 165 241 311 368 438
Cantilever strength kN 12.5 12.5 12.5 12.5 12.5
Low frequency flashover voltage Dry flashover kV 80 110 125 150 175
Wet flashover kV 60 85 100 125 150
Critical impulse flashover voltage Postive kV 130 180 210 255 290
Negative kV 155 205 260 340 380
Radio influence voltage data test voltage to ground kv 15 22 30 44 44
At 1000kHZ Max.RIV μ V 100 100 300 200 200
Weight(kg) 5 9.8 12 16 18

 

 

ANSI CLASS 57-11 57-12 57-13 57-14 57-15
Creepage distance mm 356 559 737 1015 1145
Dry arcing distance mm 165 241 311 368 438
Cantilever strength kN 12.5 23.5 12.5 12.5 12.5
Low frequency flashover voltage Dry flashover kV 80 110 125 150 175
Wet flashover kV 60 85 100 125 150
Critical impulse flashover voltage Postive kV 130 180 210 255 290
Negative kV 155 205 260 340 380
Radio influence voltage data test voltage to ground kv 15 22 30 44 44
At 1000kHZ Max.RIV μ V 100 100 300 200 200
Net Weight,Each,Approx,kg 6.8 10 11.8 15.9 18.6

 

 

Type ANSI 57-2L-1 PIN POST
Creepage distance mm 559 520
Protected Creepage distance (mm) 200 260
Dry arcing diatance (mm) 240 260
Cantilever strength kN 12.5 12.5
Low frequency flashover voltage Dry,kV 90 90
Wet,kV 65 65
Impulse Withstand Voltage,KV 150 150
Radio influence voltage data test voltage to ground kv 22 22
At 1000kHZ Max.RIV μ V 100 100
Net Weight,Each,Approx,kg 9.2 10

 

 

Cat No. Fig NO. Mian Demension in (mm) Gtee-page
Dist-
ance (mm)		 Cant-ilever 
Stre-
ngth 1b(KN)		 withstand Voltage Power Frequ-aency Puncture Voltage 
KV		 Radio influence Voltage Used Spin-dles
D H d1 H R1 R2 d one minute Wet power Frqu-ency Dry 
Im-
pulse With-stand Voltage KV		 Test Volt-age
To 
Gro-
und
KV		 Max 
Riv
At 
1M
Hz V
P-
11-
Y		 1 140 133 18.29 48 13 9.5   240 11 45 810 150 15 8000/
100		 Small steel head
P-
15-
Y		 1 152 137 18.29 48 13 12.7   298 11 50 95 450 15 8000/
100
P-
22-
Y		 2 230 165 27.78 52.63 19 14.3   432 11 70 125 200 22 12000/
100		 Large steel head
P-
33-
Y		 3 279 244 27.78 52.63 19 13   630 13.8 90 170 210 30 16000/
100
PW-
15-
Y		 4 170 182   52.63 16 16 76 432 11 50 95 150 22 12000/
100
PW-
22-
Y		 5 205 255   52.63 16 16 76 673 11 70 125 200 30 16000/
100
PW-
33-
Y		 5 240 320   52.63 16 16 76 851 11 90 170 210 44 25000/
100

ANSI Low & medium voltage pin type insulators

 

Class ANSI Mian Demension in (mm) lea-
kage Dist-ance
in
(mm)		 Min.Pin Length in (mm) Cantilever Strength 1b(KN) Average Flashover Voltage Power Frequ-aency
Pun-
cture Volt-age 
KV		 Radio
influence Voltage
D
(max)		 H h Power Frequency Critcal
Impulse		 Test Voltage To Ground KV Max Riv At 1MHz V
Dry kv Wet kv Pos-itive
kv		 Nag-ative 
kv
55-1 31/4
(83)		 31/2
(89)		 13/4(44) 4(102 4(102) 3000(13) 35 20 50 70 50 5 2500/50
55-2 33/4
(95)		 31/4
(83)		 11/2(38) 5(127) 4(102) 2500(11) 50/45 25 75/70 95/85 70 5 2500/50
55-3 43/4
(121)		 33/4
(95)		 11/2(38) 7(178) 5(127) 2500(11) 65/55 35/30 100/90 130/110 90 10 5500/50
55-4 51/2
(140)		 43/8
(111)		 13/4(44) 9(229) 5(127) 3000(13) 70/65 40/35 110/105 140/130 95 10 5500/50
55-5 7
(178)		 47/8
(124)		 2(51) 12(305) 5(152) 3000(13) 85/80 45 140/130 170/150 115 15 800/100

ANSI High voltage pin insulators

 

Class ANSI Mian Demension in (mm) leak-
age
Dist-
ance
in 
(mm)		 Min.
Pin
Le-
ngth
in 
(mm)		 Canti-lever Stre-ngth 1b(KN) Average 
Flashover 
Voltage		 Power
Freq-uae-ncy Pun-
cture Volt-age
KV		 Radio influence Voltage
D H d d1 h R1 R2 Power Freq-uency Critcal 
Impulse		 Test Volt-age
To 
Gro-
und
KV		 Max Riv
At 
1M
Hz
V
Dry kv Wet kv Pos-itive kv Nag-ative kv
56-1 71/2
(191)		 53/4
(146)		 31/2
(89)		 11/2
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 13
(330)		 6
(152)		 2500
(11)		 95 60 150 190 130 15 100
56-2 9
(229)		 61/2
(165)		 4
(102)		 13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 17
(432)		 7
(178)		 3000
(13.2)		 110 70 175 225 145 22 100
56-3 101/2
(167)		 71/2
(191)		 4
(102)		 13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 21
(533)		 8
(203)		 3000
(13.2)		 125 80 200 265 165 30 200
56-4 12
(305)		 91/2
(241)		   13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 27
(685)		 10
(254)		 3000
(13.2)		 140 95 225 310 185 30 200
56-5 131/2
(343)		 121/2
(318)		   13/8
(35)		 2
(51)		 3/4
(19)		 9/16
(14)		 34
(864)		 12
(305)		 3000
(13.2)		 175 125 270 340 225 44 200

ANSI Pin type insulators for high voltage

 

Class ANSI Fig Main 
Demension
in (mm)		 leak-
age
Dist-
ance in (mm)		 Com-
bined 
M & E Stre-
ngth b(KN)		 Mceb
anical Impact Strenth in-1b(N-m)		 Time Load 
Test Value
1b (KN)		 Average 
Flashover Voltage		 Power Freq-
uaency Punc-
ture Voltage KV		 Radio influence Voltage
D(max) F Power Frequ-
ency		 Critcal 
Impulse		 Test
Volt-
age
To
Gro-
und
KV		 Max Riv At 1MHz V
Dry kv Wet kv Positive kv Nag-
ative
kv
52
-1		 1 61/2
(165)		 51/2
(165)		 7(178) 10000
(44)		 45(5.0) 6000
(27)		 60 30 100 100 80 7.5 50
52
-2		 1 8
(203)		 53/4
(146)		 81/4
(210)		 15000
(67)		 50(5.5) 10000
(44)		 65 35 115 115 90 7.5 50
52
-3		 1 103/4
(273)		 53/4
(146)		 111/2
(292)		 15000
(67)		 5.5(6.0) 10000
(44)		 80 50 125 130 110 10 50
52
-4		 3 103/4
(273)		 53/4
(146)		 111/2
(292)		 15000
(67)		 5.5(6.0) 10000
(44)		 80 50 125 130 110 10 50
52
-5		 2 103/4
(273)		 53/4
(146)		 11
(279)		 25000
(111)		 60(7.0) 15000
(67)		 80 50 125 130 110 10 50
52
-6		 3 103/4
(273)		 53/4
(146)		 11
(279)		 25000
(111)		 60(7.0) 15000
(67)		 80 50 125 130 110 10 50
52
-9		 4 41/2
(114)		 61/4
(160)		 63/4
(171)		 10000
(44)		 45(5.0) 6000
(27)		 80 30 100 90 80 7.5 50
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