Application: by mounting the phase clamps on the rectangular section bar, followed by the tightening of the clamp driving screw.
Classic / automatic phase clamps must be handled using an insulating stick according to the voltage of the installation, provided with “RO bayonet’’ coupling system.
Constructive shapes: three-phase.
Constructive types of phase clamps:
- Classic clamp (C)
- Automatic clamp (CA)
Three-phase short-circuiting device consisting of:
- Phase clamp – 3 pieces
- Phase cable – 3 pieces
- Earthing cable – 1 piece
- Earthing clamp – 1 piece
Packing: waterproof bag.
Related products:
– Multipurpose modular insulating stick type PMU 20-1 B/ba / PMU 110-2 B/ba.
| General technical characteristics of short-circuiting devices applicable on rectangular section bars | |||||||
| Earthing cable cross-section Sp (mm2) | 16 | 25 | 35 | 50 | 70 | 95 | 120 |
| Nominal short-circuit current fort = 1 s 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 = 1 s (kA) | 4.6 | 7.2 | 10.06 | 14.38 | 20.13 | 27.31 | 34.5 |
| Test (shock) 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 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Phase clamp type | Classic clamp (C) | Automatic clamp (CA) |
| Short-circuiting cable length - three-phase short-circuiting device lf (m) | max. 1.5 | max. 1.5 |
| Earthing cable length - single-phase / three-phase short-circuiting device lp (m) | max. 7 | max. 7 |
| Thickness of the flat bar where the phase clamp can be mounted g (mm) | max. 40 | max. 37 |
The three-phase short-circuiting device includes the following components:
- Phase clamp - 3 pieces
- Phase cable - 3 pieces
- Earthing cable – 1 piece
- Manual earthing clamp – 1 piece
Constructive types of phase clamps:
- Classic clamp
- Automatic clamp (CA)
