Three phase earthing device for MV overhead lines-application from height – CAA phase clamp fixed on insulating stick

Three phase earthing device for MV overhead lines-application from height - CAA phase clamp fixed on insulating stick


Category:

     

Code: Msp – CAA – AST – 3xSf/lf – Sp/lp – O/p – E    

The three phase earthing device provided with automatic self-locking phase clamps (CAA) fixed on insulating sticks can be applied from height on MV overhead lines.
The main parts of the phase clamp are made by casting from aluminium alloy.
The phase clamp is fixed on the end of insulating stick (made of fiberglass).

The fastening of the phase clamp on conductor is performed by hooking and pulling downward of the clamp.
The removal of the phase clamp is performed by pushing and vertical twisting of the insulating stick.

Technical characteristics

Earthing Sand short-circuiting Sf  cable sections  (mm2)

16

25

35

50

70

95

Nominal short-circuiting current for t=1s Isc (kA)

4

6

8

12

16

18

Nominal peak currrent for t=0,02s Isd (kA)

10

15

20

30

40

45

Testing short-circuiting current for t = 1s Itest (kA)

4,6

6,9

9,2

13,8

18,4

20,7

Testing peak current for t = 0,02 s Ipeak (kA)

11,5

17,25

23

34,5

46

51,75

Peak factor (SR EN 61230)

2,5

Short-circuiting cable length lf  (m)

max. 2,5

Earthing cable length lp  (m)

max. 15

Conductor diameter on which the clamp can be applied (mm)

5÷32

6÷32

Insulated stick -Total length Lt / Useful length Lu (m)

1,6 / 0,8

 This equipment contains following components:
– Automatic self-locking phase clamp (CAA) with insulating stick – 3 pieces
– Phase (short-circuiting) cables – 3 pieces
– Earthing cable – 1 piece
– Earthing clamp – 1 piece
– Earthing rod – 1 piece

This equipment device is delivered in a metallic box (1830 x 300 x 160 mm).