• Bistrița, Drumul Cetății street, no. 19, Bistrița-Năsăud county

CI 20 kV, 70 kN

Composite insulators for LEA and transformer stations

Product description

UMZone IIZone IIIZone IV
Distance between the end reinforcements - amm190242264
Numar de rile mari / rile mici3/43/63/7
The diameter of the insulating parts
    Miez (tija centrala) – d3mm242424
    Rile mari / rile mici – d1/d2 mm84/7084/7084/70
Creepage distancecm50,865,875
Arc distance mm238290312
24 kVThe maximum voltage of the network
50 HzNominal frequency
50 kVHolding voltage 50 Hz 1 min. in dry environment and under rain
105 kVmaxHolding voltage at switching pulse under rain 250 – 2500 μs
20 kAShort circuit current
70 kNSpecified mechanical load – SML
35 (42) kNIndividual mechanical load - IML
>125 kVmaxHolding voltage at lightning impulse 1,2/50 un dry state
<=160 kVmaxVoltage 50% bypasses to lightning impulse in dry state 1.2/50 μs
Symbolistic of end fittingsAnchorage distanceUMInformative weight
l(+-6) mmIIIIIIV
BB    Socket – Balla + 177kg1,41,41,4
CT    C clevis tongue - Right piecea + 192kg1,61,71,7
BE    Ball – Eyea + 189kg1,21,31,3
EE    Eye – Eyea + 204kg1,41,41,5
BY    Ball – C clevis tonguea + 187kg1,71,71,8
TT    Right piece – Right piecea + 190kg1,251,41,4
SS    Socket – Socketa + 180kg1,71,71,8

Notes:

On request, the end assemblies of the composite insulators are executed in the desired combinations, with the corresponding modifications of the anchorage distances.

+ Dimensional characteristics
UMZone IIZone IIIZone IV
Distance between the end reinforcements - amm190242264
Numar de rile mari / rile mici3/43/63/7
The diameter of the insulating parts
    Miez (tija centrala) – d3mm242424
    Rile mari / rile mici – d1/d2 mm84/7084/7084/70
Creepage distancecm50,865,875
Arc distance mm238290312
+ Electrical and mechanical characteristics
24 kVThe maximum voltage of the network
50 HzNominal frequency
50 kVHolding voltage 50 Hz 1 min. in dry environment and under rain
105 kVmaxHolding voltage at switching pulse under rain 250 – 2500 μs
20 kAShort circuit current
70 kNSpecified mechanical load – SML
35 (42) kNIndividual mechanical load - IML
>125 kVmaxHolding voltage at lightning impulse 1,2/50 un dry state
<=160 kVmaxVoltage 50% bypasses to lightning impulse in dry state 1.2/50 μs
+ Symbology
Symbolistic of end fittingsAnchorage distanceUMInformative weight
l(+-6) mmIIIIIIV
BB    Socket – Balla + 177kg1,41,41,4
CT    C clevis tongue - Right piecea + 192kg1,61,71,7
BE    Ball – Eyea + 189kg1,21,31,3
EE    Eye – Eyea + 204kg1,41,41,5
BY    Ball – C clevis tonguea + 187kg1,71,71,8
TT    Right piece – Right piecea + 190kg1,251,41,4
SS    Socket – Socketa + 180kg1,71,71,8

Notes:

On request, the end assemblies of the composite insulators are executed in the desired combinations, with the corresponding modifications of the anchorage distances.

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