BS EN 61377-1:2006 pdf download

BS EN 61377-1:2006 pdf download.Railway applications——Rolling stock — Part 1: Combined testing of inverter-fedal ternating current motors and their control system.

5.2 Declared characteristics
Characteristic curves obtained from the results of type tests carried Out fl accordance with 7.5.
5.3 Combined system characteristics
The specified and declared characteristics of the combined system shown as a function of speed, over the whole application range are:
a) external characteristics such as the mean mechanical torque, the mean values of the d.c. input: voltage, current and power of the combined system;
b) internal characteristics such as the root-mean-square value of the output current of the inverter, the root-mean-square of the fundamental components of the output current and voltage of the inverter, the slip of asynchronous motors, and the excitation current for synchronous motors;
c) internal values such as switching transients, which are the point•to-point and point•to• earth peak voltage, temperatures, etc.
NOTE Internal switching transients are of use to check the dielectric test voltage of the constituents.
If the efficiency is an important parameter, it shall be requested, and this characteristic shall also be shown. Efficiency is particularly important for combined systems used on thermal/electric rolling stock, or battery-fed vehicles.
The efficiency characteristic of the combined system shall take into account the motor, the inverter, the cables and other relevant components.
The measurement of efficiency shall include excitation losses in the case of synchronous machines.
The characteristics shall be drawn at least for the maximum torque reference (main controller demand) over the entire speed range of the application, in motoring and braking if electric braking is proposed.