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Traction

SAFETY AND PROTECTION IN THE MANAGEMENT OF THE RAILWAY TRACTION

RAYLWAYS| SUBWAYS| TRAMWAYS | TROLLEY-BUS

Earthing and short circuit lance device

A lance device is composed by:
1) n° 1 Lance contact for conductor
2) n° 1 Earthing and short circuit lance
3) n° 1 Flag for signalling of earth connected
4) n° 1 Lance contact at ground potential
5) n° 1 Metallic extension (optional)
6) n° 1 Pole mechanical fixing
7) n° 1 Manoeuvring insulating stick

USE AND SAFETY ADVANTAGES

Earth and short circuit with lances is suited in case of:
• high short circuit current requiring heavy portable devices with big earthing conductors;
• qneed of placement of more single phase short circuit devices (in parallel);
• avoid the danger coming from strong and quick electrodynamic movement of the earthing cable during the
short circuit;
• few space in the substation, limiting the operation capability.

Earthing and short circuit lance device
Download technical sheet

In accordance to TERNA SPA technical specification:
ING. LANCE 01
Rev. 03 of 23/05/2011
In accordance to:
• CEI EN 61219