Three-phased short-circuiting device for bus bars-automatic extruded clamp CAE

Three-phased short-circuiting device for bus bars-automatic extruded clamp CAE


 

Code: Msp – CAE – 3xSf/lf – Sp/Ip – P/p    

The three-phased short-circuiting device is equipped with three automatic phase clamps (“CAE” type) which can be fixed on bus bars in indoor substations.
The “CAE” automatic clamp contains an extruded body made of alluminium alloy, a special trigger mechanism and a tightening screw with a bayonet terminal for coupling with PMU insulating sticks.    

Parameter

Value

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 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

Short-circuiting cable length If (m)

max. 1,5

Short-circuiting cable length Ip (m)

max. 7

Thickness of the bus bar on which the clamp can be applied (mm)

max. 36

The three-phased short-circuiting device contains:
– automatic extruded 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.