Single-phase short-circuiting device for conductors of various shapes-lightweight universal classic clamps
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Application: from the ground, by mounting the phase clamp on the conductor, followed by the tightening of the clamp driving screw.
Lightweight universal classic phase clamps must be handled using an insulating stick according to the voltage of the installation, provided with “RO bayonet’’ coupling system.
Constructive shapes: single-phase.
Constructive types of phase clamps:
- Classic Universal Reduced Clamp (CCRU/E)
- Classic Universal Normal Clamp (CCNU/E)
- Classic Universal Transversal Clamp (CCTU/E)
The single-phase short-circuiting device includes the following components:
- Phase clamp – 1 piece
- Earthing cable – 1 piece
- Earthing clamp – 1 piece
Packing: waterproof bag.
Related products:
– Multipurpose modular insulating stick type PMU 20-1 B/ba.
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General technical characteristics of short-circuiting devices with universal clamp types CCRU/E, CCNU/E and CCTU/E |
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CCRU/E / CCNU/E / CCTU/E |
CCNU/E / CCTU/E |
CCTU/E |
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| Earthing cable cross-section Sp (mm2) |
16 |
25 | 35 | 50 | 70 | 95 |
120 |
| Nominal short-circuit current for t = 1s Isc (kA) |
4 |
6,25 | 8,75 | 12,5 | 17,5 |
23,75 |
30 |
| Shock (peak) nominal current for t = 0,02 s Isd (kA) |
10 |
15,63 | 21,9 | 31,25 | 43,75 | 59,38 |
75 |
| Test short-circuit current for t = 1s (kA) |
4,6 |
7,2 | 10,06 | 14,38 | 20,13 | 27,31 |
34,5 |
| Test shock (peak) current for t = 0,02 s (kA) |
11,5 |
17,97 |
25,16 | 35,94 | 50,31 | 68,3 |
86,25 |
| Power factor (according to SR EN 61230) | 2,5 | ||||||
| Phase clamp type |
Classic universal reduced clamp (CCRU/E) |
Classic universal normal clamp (CCNU/E) |
Classic universal transversal clamp (CCNU/E) |
| Short-circuiting cable length lf – three-phase short-circuiting device – (m) |
max. 2,5 |
max. 2,5 |
max. 2,5 |
| Earthing cable length lp – single-phase short-circuiting device (m) |
max. 10 / max. 7,5 |
max. 10 / max. 7,5 |
max. 10 / max. 7,5 |
| Thickness of the flat bar where the phase clamp g can be mounted g (mm) |
max. 30 |
max. 45 |
max. 45 |
| Diameter of the sphere-type coupling part Sf (mm) |
20/25 |
20/25 |
25 |
| Diameter of the conductor where the phase clamp can be applied ø D (mm) |
4 ÷ 30 |
4 ÷ 36 |
3 ÷ 45 |
The single-phase short-circuiting device includes the following components:
- Phase clamp – 1 piece
- Earthing cable – 1 piece
- Manual earthing clamp – 1 piece
