1-phase JK22-JK250

1-Phase Earthing Device

Ref. SS 428 91 01, EN 61230
The device is for use on the railway’s catenary line and rail. Line clamp JK 22 is for connection to the railway’s catenary line 80-120 mm2
according to SS 24 01 21 and DIN 43 141, return line Cu 130 mm2 or Al 212 mm2 or other circular, non-flexible conductors with a diameter of 14 – 19 mm. Insulating poles MGV, MDV/MSV, MTV and operating socket JGS are used to operate the line clamp. The line clamp conducting parts are made of aluminium bronze and steel components are made of stainless steel. The line clamp has stainless steel spring washers to insure constant contact pressure. The earthing cable, made of highly flexible ESTPR-insulated copper strands, has sealed cable connections, which prevent humidity from penetrating the cable. The earthing cable is connected with a cable lug to the clamps. Earth clamp JK 250 has a loop of surface treated spring steel. Other steel components are made of stainless steel. The screw is insulated. Earth clamp JK 250 is connected to the base of the rail, which allows rail vehicles to pass. JK 250 is intended only for short-term use to the rail.

1-phase JK22-JK250

excl. earthing cable

E-nr:

No E-number available
Earthing device excl. earthing cable
E-No.
Type
Line Clamp
Cable shoe/
Earth Clamp 
Earthing cable
area
mm2
Rated Current
max. kA/1s
Weight kg/unit
E1658846 JK22-JK250
JK 22
JK 250
25-70
11,5 2,1*

* Incl. cable connection for max earthing cable area.

 Pls. specify earthing cable area and earthing cable length when ordering.

Earthing Cables for Earthing- and Short-circuiting devices

Type
Earthing Cable area

mm2
Rated
current
kA/1s
Weight
kg/m
ESTPR25 

25
5,7
0,3
ESTPR35 35
8,0
0,4
ESTPR50
50
11,5
0,5
ESTPR70 70
16,0
0,7
ESTPR95 95
21,0
1,0
ESTPR120 120
27,0
1,2
ESTPR150 150
34,0
1,5
ESTPR185 185
42,5
1,9