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   Home   Dynamic Brake Resistors Vertical Type DBR

 

Radial Grid Dynamic Brake Assembly

Dynamic Brake Hatch Assembly

Force Cooled Roof Mounted DBR Assembly With Short Hood

Forced Cooled Roof Mounted DBR (Electric Locomotive)

Vertical Type DBR

Natural Cooled Roof Mounted DBR

Resistor Harmonic Filter

Resistor Over Voltage Protector (MUB)

Pre-Charge Resistor

Inverter Protection Resistor (IPR)

Crowbar Resistor

Oil Cooled Resistor

Vertical type DBR ( For WAG7 Electric Locomotives DU100104009 )

 

This is highly compact braking resistor. The resistor is divided into Resistor bank, 3 Phase Induction Motor and Blower.
Resistor bank consist of six resistor tiers connected to six traction motor. Resistor banks are made from nickle chromium alloys capable to withstand high temperature with low tendency of aging, low resitance change and long life.


Blower is axial flow fan with AC motor (DC motor optional). Blower is aluminum alloy die cast. Blower fixed on the bottom of the underframe and fresh air is sucked in from the lower portion. Top of the resistor bank is matched to the roof of the locomotive and hot air is blown out from the roof top into the atmosphere. This type of braking resistor is highly successful and provided maximum braking efforts helping to reduce speed of the train with loads upto 4800 ton.

The advantages of this system are: -

Independent AC three phase Blower Motor is fed separately hence, almost constant airflow (quantity + velocity) over the grids is available through out the entire range of braking current which results for low temperature rise of DBR.

Maintenance cost of AC three phase Motor is substantially less as compared to DC Motor.

Better Braking effort.

 

Technical Details

Continuous Braking Current

900 A

Power Dissipation

2430 kW

Average Operating Temperature

600°C

Motor Blower Speed

3000 rpm

Blower Motor

AC and DC
Series as an
option

Description

Ref Part No.

DR Part No.

Resistor Grids 60 NMT

2810477
40010559
40038122
40038462

DR129903003

Resistor Grids 60 MT

2810473
40010560
40038123
40038463

DR129903004

Resistor Grid 90 NMT 3600kW

40072441
40170134

DR129922003

Resistor Grid 90 MT 3600kW

40072440
40170024

DR129922004

Resistor Grid 90 NMT

RA-0500-
0021

DR129911003

Resistor Grid 90 MT

RA-0500-
0022

DR129911004

 
 

Copyright @ Daulat Ram