Single phase earthing device for railway contact line


Category:

 

Code: Msp – CrTf – S  /l   – Fc/ps  

The single phase earthing device for railways contact line is provided with a classic clamp for the railways installations (CrTf type) and a manual earthing clamp for the rail (used on the tramrails or railways).

The classic clamp for the railway installations (CrTf type) has an extruded body (made of aluminium alloy) and a tightening screw with a bayonet terminal. An electrode for discharging the contact power line from induced residual electric charges from the neighbouring installations is placed on the top of the clamp.

The manual earthing clamp (casting from copper-aluminium alloy) is special designed to allow its fastening under the rail, leaving the track free.

Technical characteristics

Section of earthing clamp Sp (mm2)

16

25

35

50

70

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

3,5

6

8

12

16

Peak current for t = 0,02 s Isd (kA)

8,75

15

20

30

40

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

4,6

6,9

9,2

13,8

18,4

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

11,5

17,25

23

34,5

46

Peak factor (SR EN 61230)

2,5

Maxim length of earthing cable Ip (m)

max. 16

Diameter of conductor on which can be applied the phase clamp (mm)

5 ÷ 32

Railway type

40, 49, 60, R65

 This equipment contains the following components:
– CrTf classic phase clamp – 1 piece
– earthing cable – 1 piece
– earthing clamp (special type for railways) – 1 piece

This equipment is delivered in a carrying bag or a transport case.