Three-phase short-circuiting device for MV overhead line – application from the ground – self-locking clamp
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Intended use: MV overhead line conductors placed maximum 10,5 m from the ground
Application: from the ground, by hanging the self-locking clamps mounted at the end of metallic telescopic sticks on overhead conductors, using the insulating stick included in the short-circuiting device.
Benefits: easy to be assembled and applied by a single user.
Components:
- Metallic telescopic stick with self-locking clamp – 3 pieces
- Insulating stick with two modules – 1 piece
- Metallic drum for the transportation of earthing cables – 1 piece
- Earthing cable, l=10m; S=35 mm – 3 pieces
- Earthing clamp – 1 piece
- Mobile earthing rod – 1 piece
Packing: waterproof bag.
Tips: the absence of voltage on overhead conductors is checked using the subassembly consisting of the self-locking clamp – metallic telescopic stick, with a medium voltage detector fixed in the special part at the end of the insulating stick, consisting of two modules.
The voltage detector is not included in the product set.
| Technical characteristics | |
| Earthing cable cross-section / length (mm2/m) | 35/10 |
| Nominal short-circuit current for t=1s Isc (kA) | 8 |
| Shock (peak) nominal current for t=0,02s Isd (kA) | 20 |
| T est short-circuit current for t=1s (kA) | 9,2 |
| Test shock (peak) current for t=0,02s (kA) | 23 |
| Power factor (according to SR EN 61230) | 2,5 |
| Length of the telescopic metallic stick – folded/extended (m) | 2,45/6,35 |
| Total length of the insulating stick consisting of two modules (m) | 3,42 |
| Diameter of the conductor where the phase clamp can be applied (mm) | 4÷22 |
Components:
- Metallic telescopic stick with self-locking clamp – 3 pieces
- Insulating stick with two modelues – 1 piece
- Metallic drum for the transportation of earthing cables – 1 piece
- Earthing cable, l=10m; S=35 mm – 3 pieces
- Manual earthing clamp – 1 piece
- Mobile earthing electrode (peg) – 1 piece
