Single-phased earthing device for round conductors – classic clamp Cr
Single-phased earthing device for round conductors - classic clamp Cr
Code: Msp – Cr – Sp/lp – O
The single-phased earthing device is equipped with a classic phase clamp (“Cr” type) that can be fixed on round conductors in HV/MV substations.
The “Cr” classic clamp contains an extruded body made of alluminium alloy and a tightening screw with a bayonet terminal for coupling with PMU insulating sticks.
|
Parameter |
Value |
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|
Earthing cable section Sp (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 short-circuiting current for t = 0,02 s (kA) |
11,5 |
17,25 |
23 |
34,5 |
46 |
57,5 |
86,25 |
|
Maximum length of the earthing cable Ip (m) |
17,5 |
17,5 |
17,5 |
17,5 |
17,5 |
10 |
10 |
|
Peak factor |
2,5 |
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|
Conductor diameter on which the clamp can be applied (mm) |
17 ÷ 32 |
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The single-phase earthing device contains the following components;
– classic phase clamp – 1 piece;
– earthing cable – 1 piece;
– earthing clamp – 1 piece;
The earthing device equipped with cables with 120 mm2 sections and lengths greater than 9,5 m is provided only with earthing lug (without earthing clamp).
The earthing device is delivered in sets of three pieces in a transport bag/box.