M01
17 Maggio 2019
powerMELA.duo280
17 Maggio 2019
powerMELA.bc
System safety
The powerMELA.bc is an electric permanent brake equipped with oil cooling which protects against overvoltages. Its housing fulfills the requirements for the IP6K9K.
TECHNOLOGIES
The powerMELA.bc is a component for the monitoring of the intermediate circuit voltage in the electrical system. Like all powerMELA components, the brake chopper is also characterized through its field-tested robustness. It has been especially developed for electronic braking in mobile machines.
Function
The brake choppers measure the intermediate circuit voltage and connect automatically when they detect the exceedance of a set threshold valve (e.g. when the vehicle is braked). High power resistors are also connected which transform the excess electrical energy into thermal energy. The generated heat is dissipated by the integrated oil cooling. The brake chopper thus protects against overvoltage in a manner comparable to an overpressure valve in pressure systems. After the vehicle is switched off, the brake chopper immediately reduces the HV voltage in the intermediate circuit and prevents risks during subsequent maintenance or repair work.
Braking power
Due to its liquid cooling, the powerMELA.bc can provide a continuous brake power of 50 kW. Higher braking performances can also be achieved short-term.
Control unit
The parameterization for the adjustment of the brake characteristics and switching thresholds takes place via CAN.
Solutions
The braking power of the powerMELA.bc can be tailored to the requirements of a specific customer application and united with other STW components (inverter, insulation monitor, power distribution unit etc.) in a single housing as a modular power system box.
Software
The comprehensive software toolchain for the powerMELA.bc supports you regarding the system integration.
Statements
powerMELA.bc is a product of
Sensor-Technik Wiedemann GmbH
All rights are reserved.
Specifications
| Operation Data | ||
|---|---|---|
| Size (resistor) | 3 x 2R2 Ω | |
| Rated voltage DC (passive range) | up to 695 V | |
| Operating voltage range DC (active range) | up to 800 V | |
| Rated capacity | 50 kW | |
| Maximum power | 500 kW | |
| Earthing System | IT | |
| Maximum impulse withstand voltage | 4000 V | |
| Insulation monitoring | optional | |
| Control type | Brakes, overvoltage protection, intermediate circuit discharge | |
| Temperature range | -40 °C ...+85 °C -40 °F ... +185 °F | |
| LV Power supply DC | 9 ... 32 V | |
| Mechanical Data | ||
| Protection class | IP6K9K | Communication Connector IP67 |
| Maximum coolant temperature | 60 °C / 140 °F | Transformer oil 50 l/m |
| Cooling line connection | 2 x M26 x 1,5 | |
| Connection DC line | 2 x 70 mm2 | with 8 mm cable lug |
| Connection Communication | 19 pins, 2 x CAN; I/O | |
| Control connection | 2 x CAN | |
| Maximum operating height | 5000 m.a.s.l. | |
| Weight | 53 kg | |
| Dimensions L x W x H (L x W x H) | 507 x363 x 324 mm (19.96 x 14.29 x 12.76 inch) | |
Code: 1142501000100 BRAKE-CHOPPER POWERMELA 500KW
