Enquiry on the protection of alterna ting current installations and motive power units against overvoltage

Tests on nonlinear resistor type arresters (1500 V D.C.) and on capacitor type arresters (1500 V and 3000 V D.C.)

Definition of the constituent parts of the equipment to be protected against overvoltages

Comparison in service of different types of lightning arrestor for 1500 V and 3000 V overhead contact systems

Arcing tests on catenary insulators

Tests in the low temperature cabinet

Icing phenomena on pantographs

Icing pehnomena on pantographs

Deicing tests on overhead contact systems

Enquiry report