Application: from the ground, by mounting the phase clamp on the conductor, 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: single-phase.
Constructive types of phase clamps:
- Classic Universal Clamp( CCU)
- Universal Automatic Clamp (CAU)
- Universal Automatic Fast Clamp (CARU)
The single-phase short-circuiting device consists of:
- 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 / PMU 110-2 B/ba / PMU 220-2-B/ba / PMU 400-3-B/ba
How to apply the earthing device in HV/MV substations with guidance device for insulating sticks
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General technical characteristics of short-circuiting devices with universal clamp types CCU, CAU and CARU |
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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 |
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Power factor (according to SR EN 61230) |
2,5 |
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| Phase clamp type | Classic universal clamp (CCU) | Universal automatic clamp (CAU) |
Universal automatic fast clamp(CARU) |
| Short-circuiting cable length – three-phase short-circuiting device lf (m) |
– |
– |
– |
| Earthing cable length – single-phase short-circuiting device lp (m) |
max. 10 |
max. 10 |
max. 10 |
| Thickness of the flat bar where the phase clamp can be mounted g (mm) |
max. 40 |
max. 37 |
max. 40 |
| Diameter of the sphere-type coupling part Sf (mm) |
30 |
30 |
30 |
| Diameter of the conductor where the phase clamp can be applied øD (mm) |
9 ÷ 32 |
9 ÷ 32 |
9 ÷ 32 |
The single-phase short-circuiting device consists of:
- Phase clamp – 1 piece
- Earthing cable – 1 piece
- Earthing clamp – 1 piece
Related products:
– Multipurpose modular insulating stick type PMU 20-1 B/ba / PMU 110-2 B/ba / PMU 220-2-B/ba / PMU 400-3-B/ba