1-, 2-, 3-Phase Earthing Device
Ref. SS 428 91 01, EN 61230
Used as line earthing devices for free high tension transmission lines, voltage 70 – 420 kV.
The line clamps are applied and operated with throwing weight and pull-lines. The line clamp is spring-loaded and is approved for application FeAl 234 – FeAl 910.
The line clamps conducting parts are made of hardened AlSi-alloy and steel components are made of stainless steel. The earthing cable, made of highly flexible ESTPR-insulated copper strands, has sealed cable connections, which prevent humidity from penetrating the cable.
The earthing device is equipped with a rubber insulated bayonet type connector fitting for connection to earthing device JSKL1-JQL and JK31-DXF. Other combinations such as 1-phase and 2-phase are also available. Pull-lines APG 35, reel JVA 16 (incl. throwing weights and 60 m nylon-line Ø 0,9 mm), 1-phase earthing device (down line to earth) and earthing rod screw DJS 1 are ordered separately.
E-nr:
Earthing device excl. earthing cable
|
E-No.
|
Type
|
Line Clamp
|
Earthing cable
area mm2
|
Rated Current
max. kA/1s
|
Weight
kg/unit
|
| JPT (3-fas/3-Phase) | JK 51 | 25-35 | 8,0 | 4,1* | |
| JPT/1 (1-fas/1-Phase) | JK 51 | 25-35 | 8,0 |
1,5
|
|
| JPT/2 (2-fas/2-Phase) | JK 51 | 25-35 | 8,0 | 2,8 | |
|
APG 35
(Draglina/Pull-line 35 m, Ø 8 mm)
|
1,3 | ||||
|
JVA 16
(Kastvinda/Kastlod)
(Reel/Throwing weight)
|
0,8 |
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 |
