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Three-phased short-circuiting device for bus bars – classic clamp C
Three-phased short-circuiting device for bus bars - classic clamp C
Code: Msp – C – 3xSf/lf – Sp/Ip – P/p
The three-phased short-circuiting device is equipped with three classic phase clamps (“C” type) which can be fixed on bus bars in indoor substations.
The “C” classic clamp contains a moulded body made of alluminium alloy and a tightening screw with a bayonet terminal for coupling with PMU insulating sticks.
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Parameter |
Value |
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|
Earthing Sp and short-circuiting Sf cable sections (mm2) |
16 |
25 |
35 |
50 |
70 |
95 |
120 |
|
Nominal short-circuiting current for t = 1s Isc (kA) |
3,5 |
6 |
8 |
12 |
16 |
20 |
30 |
|
Nominal peak currrent for t = 0,02 s Isd (kA) |
8,75 |
15 |
20 |
30 |
40 |
50 |
75 |
|
Testing short-circuiting current for t = 1s (kA) |
4,6 |
6,9 |
9,2 |
13,8 |
18,4 |
23 |
34,5 |
|
Testing peak current for t = 0,02 s (kA) |
11,5 |
17,25 |
23 |
34,5 |
46 |
57,5 |
86,25 |
|
Peak factor |
2,5 |
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|
Short-circuiting cable length If (m) |
max. 1,5 |
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|
Earthing cable length Ip (m) |
max. 7 |
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Thickness of the bus bar on which the clamp can be applied (mm) |
max. 40 |
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The three-phased short-circuiting device contains:
– classic phase clamps – 3 pieces;
– phase cables – 3 pieces;
– earthing cable – 1 piece;
– earthing clamp – 1 piece;
The short-circuiting device is delivered in a transport bag/box