Low tension insulators
Author:Summer   time:2/23/2016 9:17:10 PM  read:589times

Low tension insulators are divided into low tension shackle insulators, spool insulators, guy strain insulators and LT pin insulators used on low voltage systems, such power lines and electrical poles and telegraph lines.

Low tension shackle insulators are manufactured in accordance with IS 1445 and BS 137.

NO. unit HC-LV-S50×65 HC-LV-S75×90 HC-LV-S100× 115
Type - - IS type1 IS type2
Leakage distance mm 50 63 75
Power frequency wet withstand voltage KV 12 23 23
Power frequency dry withstand voltage KV 6 10 10
Power frequency wet puncture voltage KV 1.3 Actual Dry F.O.V. 1.3 Actual Dry F.O.V. 1.3 Actual Dry F.O.V.
Mechanical strength, transverse strength KN 7.7 11.5 16.0
Net weight (approx.) kg 0.25 0.5 1.0


Spool insulators are manufactured in accordance with IS 3608 and BS 137.

NO. unit HC-LV-SH-57×54 HC-LV-SH-80×76 HC-LV-SH-80×80 HC-LV-SH-76×65
Type - SH.L.V.1 SH.L.V.2 DIN BS
Power frequency wet withstand voltage KV 20 25 20 25
Power frequency dry withstand voltage KV 8 12 10 12
Mechanical strength, transverse strength KN 9 20 13.5 15
Net weight (approx.) kg 0.2 0.6 0.5 0.5

Guy strain insulators are manufactured in accordance with IS 5300

NO. unit HC-90×65 HC-110×75 HC-140×85 HC-140×95
Designation - A B C -
Creepage distance mm 41 48 57 70
Power frequency dry withstand voltage KV 18 22 27 30
Power frequency wet withstand voltage KV 8 9 13 18
Tensile strength KN 44 53 88 38
Net weight (approx.) kg 0.45 0.7 1.2 1.5

LT pin insulators are manufactured in accordance with IS 1445, BS 137


NO. unit HC-LV-T-70×100 HC-LV-T-80×105 HC-LV-T-65×100
Type - IS type Ⅰ -- IS type Ⅱ
Creepage distance mm 185 195 165
Cantilever strength KN 360(3.6) 360(3.6) 360(3.6)
Power frequency dry withstand voltage KV 23 23 23
Power frequency wet withstand voltage KV 10 10 10
Power frequency puncture voltage KN 1.3 x Actual Dry F.O.V. 1.3 x Actual Dry F.O.V. 1.3 x Actual Dry F.O.V.
Net weight (approx.) kg 0.45 0.5 0.45


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ceramic station post insulator,solid core station post insulator
ceramic disc suspension insulator

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