Single-phase / three-phase short-circuiting devices – lightweight universal phase clamp with insulated handle- type CCRU/B or CCNU/B
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:
- Lightweight universal classic reduced clamp with insulated handle (CCRU/B)
- Lightweight universal classic normal clamp with insulated handle (CCNU/B)
Components:
The single-phased short-circuiting device consisting of:
- Phase clamp – 1 piece
- Earthing cable – 1 piece
- Manual earthing clamp – 1 piece
The three-phase short-circuiting device consisting of:
- Phase clamp – 3 pieces
- Short-circuiting cable – 3 pieces
- Earthing cable – 1 piece
- Manual earthing clamp – 1 piece
Packing: waterproof bag.
| Technical characteristics | Value | |||||
| 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 |
Components:
The single-phased short-circuiting device includes the following components:
- Phase clamp – 1 piece
- Earthing cable – 1 piece
- Manual earthing clamp – 1 piece
- The three-phase short-circuiting device includes the following components:
- Phase clamp – 3 pieces
- Phase cable – 3 pieces
- Earthing cable – 1 pieces
- Manual earthing clamp – 1 piece
The three-phase short-circuiting device includes the following components:
- Phase clamp – 3 pieces
- Phase cable – 3 pieces
- Earthing cable – 1 pieces
- Manual earthing clamp – 1 piece
