Electrical supply

Check electrical characteristics of rolling stock and infrastructure in relation to customer technical specifications.

Tests objectives :

• Check the consumption and/or quality of electric power supplies to sub-stations, rectifier sub-stations, complete railway lines or even escalators
• Simulate the capacity of the line and its equipment under normal or downgraded conditions
• Check the compliance of the electrical performance of rolling stock with specifications

Tests facilities :

• Data loggers
• Voltage sensors and data processing software
• High-speed thermal cameras
• Network analyzer with associated sensors (AC)

Testing norms :

All reference documents in force-

Particular technical specifications-

Check the on-board power metering system.

Tests objectives :

Characterize the power consumption meter installed on a train

• Measure pantograph voltage and current on board the train
• Calculate energy consumed and injected back into the network

• Ensure the development of finishing methods

Tests facilities :

• Voltage sensor
• Current sensor
• Power metering software
• Data acquisition board

Understand the origin of malfunctions related to interaction between infrastructure and rolling stock.

Tests objectives :

• Measure current and voltage from the traction sub-station
• Perform signal processing in order to identify the emergence of disruptive phenomena: Unexpected activation, pumping, harmonics, impedance, etc.

Tests facilities :

• Voltage sensor
• Amperometric clamp
• Data acquisition board
• SENTINEL software

Check the quality of power supply over a long period of time and ensure real-time reporting in the event of abnormal phenomena.

Tests objectives :

• Measure current and voltage from sub-stations
• Perform signal processing
• Send e-mails including examples of interference signals
• Display electrical parameters in real-time on a website

Tests facilities :

• Voltage sensor
• Amperometric clamp
• Data acquisition board
• SENTINEL software
• 3G Modem

Check electrical properties of materials for their qualification.

Tests objectives :

Determine insulation characteristics (volume and surface resistivity) and the behaviour under voltage of an insulating material (dielectric strength)

Tests facilities :

• High voltage cage (AC/DC)
  – Up to 100 kV AC and up to 100 mA for leakage current
  – Up to 20 kV DC and up to 5 mA for leakage current
• Teraohmmeter Picoammeter

Testing norms :

IEC 93 (NF C 26215)- Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials

IEC 167 (NF C 26210)- Methods of test for the determination of the insulation resistance of solid insulating materials

Standards produced by operators-