Single-phase short-circuiting device for HV overhead line – CAA clamp

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SKU: Msp CAA - Sp/lp - O/p (cu clema clasica de legare la pământ); Msp CAA - Sp/lp - O/pr (cu clema de legare la pământ cu bac de răzuire)
Category:

Intended use: earthing of conductors for HV overhead lines.

Application: from heght, from the metallic brackets of HV overhead line poles.

Two application methods depending on the operator’s positioning compared to the conductor:

  • By hanging the clamp on the conductor followed by pulling down (if the operator is positioned under the conductor).
  • By pushing and presiing the clamp on the conductor (if the operator is positioned above the conductor).

Automatic self-locking clamps (CAA) must be handled using an insulating stick according to the power line voltage.

Components:

  • Self-locking automatic clamp – 1 piece
  • Earthing clamp – 1 piece
  • Earthing cable – 1 piece
  • Mounting – dismounting adapter (AMD/E) – 1 piece / set of 3 short-circuiting devices

Packing: waterproof bag.

Operations must also include the following equipment:

  • connecting insulating stick type PMU 110-2 B/ba / PMU 220-2 B/ba / PMU 400-3 B/ba

Tips: we recommend the use of manual earthing clamps with scraping jaw to clean and remove layers of oxides, dirt and protective paint from the metallic brackets of overhead line poles, in order to obtain appropriate contact resistance.

 

Technical characteristics Value
Phase Scable cross-section (mm2) 16 25 35 50 70 95
Nominal short-circuit current for t=1s Isc (kA) 4 6,25 8 12 16 18
Shock (peak) nominal current for t=0,02s Isd (kA) 10 15,63 20 30 40 45
Test short-circuit current for t=1s (kA) 4,6 7,2 9,2 13,8 18,4 20,7
Test shock (peak) current for t=0,02s (kA) 11,5 17,97 23 34,5 46 51,75
Power factor (according to SR EN 61230) 2,5
Length of earthing cable lp  (m) max. 17,5
Diameter (mm) of the conductor where the phase clamp can be applied (mm) 5÷32 6÷32

Components:

  • Self-locking automatic clamp – 1 piece
  • Earthing clamp – 1 piece
  • Earthing cable – 1 piece
  • Mounting – dismounting adapter (AMD/E) – 1 piece / set of 3 short-circuiting devices