SPECIALISTS IN RAILWAY ELECTRIFICATION

Pantographs

The benefits of good current collection:-

	Higher traction efficiency
	Reduced maintenance
	Reduced arc damage at the working interface
	Maximum life of wearing components on both sides of the working interface (contact wire and contact strips)
	Reduced electro-magnetic interference

Eurostar with high speed pantograph

Selection of the right pantograph/overhead combination is important. In general, the following parameters should be used to assure optimum pantograph performance in all applications:-

	Minimum head mass
	Minimum effective dynamic frame mass
	Correct head suspension stiffness
	Minimum frame and head suspension friction
	Minimum aerodynamic effect

Various Options

Many variants are available to suit customer requirements, they include:-

Different actuation methods - click here	Aerodynamic trimming capability
Hydraulic or pneumatic frame damping	Autodrop devices and inertial O.H.L.E fault detectors
3 or 4 point mounting	Manual override systems for pneumatic and electric actuators
Contact strip material to meet requirements (carbon preferred)	Mounting and air feed insulators
Interchangeability with existing units	Other special features and devices custom designed to meet special requirements

Brecknell Willis offer a repair and overhaul service for pantographs