Shandong Qing Qing Tiger lift QH series resistors inverter braking resistor braking resistor

Lift resistors, also known as elevator braking resistor our company's elevator braking resistor as detailed below: The company QH series braking resistors, inverter braking method currently on the market there are basically three types: dynamic braking, DC braking, feedback (regenerative) braking. Inverter belong uncontrolled rectifier voltage source inverter, brake way below their dynamic braking and DC braking. Dynamic braking is Delta converter allows production machinery quickly slow down or stop the movement of the main forms; DC brake in the motor operation preparation time output direct current motor stops generating torque force to obtain a smooth start feature, or when the drive stops time output direct current motor stops generating torque force to ensure that the motor is accurate stopping. Delta converter using frequency control system, the deceleration is to be gradually reduced by a given frequency to achieve. Decrease in the frequency of the process, the motor will be in regenerative braking (generating state), so that the motor speed rapidly decreased with the decline in frequency. During braking, the pump will lead to the generation born voltage DC bus voltage rises, then the drive will control the brake unit braking resistance through the boosted voltage form of heat consumed. In order to make the system a smooth deceleration, we need to set an appropriate deceleration time and select the appropriate braking resistor and braking unit in order to meet their needs. 2. The purpose of this series resistor braking resistor combination made from an alloy resistor resistor cabinet, suitable for high-power, high-current braking equipment, test equipment, elevators and lifting inverter dynamic braking circuit in. Operating Voltage: DC 500V-2000V, rated power: 0.5KW-500KW. 3. The braking resistor braking resistor is used to introduce renewable energy to the motor carrier of thermal energy consumption, which includes two important parameters resistance and power capacity. Usually used in the project is more drive stainless steel brake resistor: The resistance is easy to close install, easy to additional radiator, good looks, high heat dissipation aluminum pack full encapsulation structure, with strong resistance to vibration , weather resistance and long-term stability; small size, high power, stable and convenient installation, beautiful appearance, widely used in highly harsh industrial environments. 4. Scope altitude braking resistor is not more than 2500 m; ambient temperature does not exceed + 40 ℃ and no less than -30 ℃; when + 20 ℃ to -5 ℃ when the air relative humidity less than 85%; the surrounding medium not enough to corrode metal and damage the insulation and potentially explosive gas and conductive dust; must have anti-snow equipment and area is not filled with water vapor; in areas without severe vibration or Britain lame. 4. Model Description QH-DZX -? KW -? R