DIESEL ELECTRIC LOCOMOTIVERADIAL GRID DYNAMIC BRAKE ASSEMBLY
6 Axle Radial Grid Assembly DR129903001
The Radial Dynamic Braking Resistors complete with blower motor set are required to control the speed of the train on a continuous down gradient as well as on level section. These 6 or 4 grid resistors depending upon the requirement those are forced cooled by a D.C. blower motor mounted below the radial grid assembly, such that the fresh air is flown through the element assembly.
Elements of this assembly:Non-Fan Tap Radial Grid Resistors
Fan-Tap Radial Grid Resistors
D.C Series Blower Motor
Blower Fan
Forced cool convection method is used for cooling of resistor grid by a D.C series blower motor. Aluminium alloy die cast axial flow fan is used for cooling of resistor grid driven by D.C series blower motor. There are various designs of 4 and 6 grid arrangements, these are designed as per the power requirements.
TECHNICAL SPECIFICATIONS
| Technical Description | Ref. Part Number | DR Part Number |
|---|---|---|
| Complete DB Hatch Module | 2810470 | DR129921027 |
| Complete DB Hatch Module | 40170105 | DR110022002 |
| Dynamic Brerak Grid Fan | 2808505, 40067679 | DR120003037 |
| Resistor Grids 60 NMT | 2810477, 40010559, 40038122, 40038462 | DR139921013 |
| Resistor Grids 60 MT | 2810473, 40010560, 40038123, 40038463 | DR139921014 |
| Resistor Grids 90 NMT 3600 kW | 40072441, 40170134 | DR139922023 |
| Resistor Grids 90 MT 3600 kW | 40072440, 40170024 | DR139922024 |
| Resistor Grids 90 NMT | RA-0500-0021 | DR120113017 |
| Resistor Grids 90 MT | RA-0500-0022 | DR120114018 |
| Technical Details of 6 Axle Radial Grid Assembly DR129903001 | |
|---|---|
| Altitude | 0-1500 Mtrs |
| Maximum Grid Current | Up to 900 Amps |
| Load Voltage | Max. 2700 V DC Across Resistance |
| Ambient Temperature | 0-55° C |
| Total Heat Dissipation | 3 MW |
| Max. Grid Power of Each Resistor | 500 kW |
| DC Motor Power Output | 100 HP |
| Fan & Motor Supply | 450 V |
| Fan & Motor Speed | 2000 RPM |
| Motor Current | 195 Amps |
Note: **EMD is a trade designator of Electro Motive Diesel. DRESPL is not an authorised EMD distributor nor is otherwise associated with EMD. However, DRESPL does represent that its replacement parts, components, subsystems and services are compatible with and usable on EMD locomotives.