The dynamic brake hatch assembly is mounted
in the long hood frame of the EMD Locomotives
manufactured by Indian Railways, which
consists of a eight grid resistor boxes, two
blowers powered by two direct current series
motors, inverter protection resistance, cable
assemblies and other accessories.
The dynamic brake is used to control the speed
of the train on a continuous down gradient as
well as on level section. When the locomotive is
operating in dynamic braking, the traction motors operates as generators. The electrical
power generated by the traction motor is
converted into heat in braking grids. This heat is
dissipated into the atmosphere by the dynamic
brake grid fan and motor assembly.
The dynamic brake grid motor is powered by a
portion of the electricity generated by the
traction motors during dynamic braking
operation. |
