Application: by mounting the clamp on the conductor/bar, followed by the tightening of the driving screw of the clamp with an insulated handle.
Constructive types: single-phase or three-phase.
Types of phase-clamps:
The single-phased short-circuiting device consisting of:
The three-phase short-circuiting device consisting of:
Packing: waterproof bag.
|Clamp type CCRU/B||YES||YES||YES||YES||NO||YES|
|Clamp type CCNU/B||YES||YES||YES||YES||YES||YES|
|Rated operating voltage Un (kV)||max 1|
|Earthing cable cross-section Sp (mm2)||16||25||35||50||70||95|
|Nominal short-circuit current for t = 1s Isc (kA)||4||6.25||8.75||12.5||17.5||23.75|
|Shock (peak) nominal current for t = 0,02 s Isd (kA)||10||15.63||21.9||31.25||43.5||59.38|
|Test short-circuit current for t = 1s (kA)||4.6||7.2||10.06||14.38||20.13||27.31|
|Test shock (peak) current for t = 0,02 s (kA)||11.5||17.79||25.16||35.94||50.31||68.3|
|Power factor (according to SR EN 61230)||2.5|
|Phase clamp type||CCRU/B||CCNU/B|
|Short-circuiting cable length lf (m)- three-phase short-circuiting device||max. 2,5||max. 2,5|
|Earthing cable length lp (m) – single-phase / three-phase short-circuiting device||max. 10 / max. 7,5||max. 10 / max. 7,5|
|Thickness of the flat bar where the phase clamp can be connected g (mm)||max. 30||max. 45|
|Diameter of the sphere-type coupling piece Sf (mm)||20 / 25||20 / 25|
|Diameter of the conductor where the phase clamp can be attached øD (mm)||4 ÷ 30||4 ÷ 36|
The single-phased short-circuiting device includes the following components:
The three-phase short-circuiting device includes the following components: