绕线式水阻启动柜概述

I. Overview

ZDR系列液体电阻起动器是为了进一步改善大、中型绕线式异步电动机的起动性能而研制成功的新一代起动控制装置，通过在被控电动机的转子回路中串入液体电阻，随电动机起动时自动投入并在预定的时间内自动、无级、连续切除，克服了频敏变阻器、油浸变阻器、铸铁变阻器等老式起动控制设备冲击电流大（一般约为额定电流的3～5倍），起动不理想等不足，使电机在理想的起动电流条件下平稳起动，均匀升速，对保护电机、用电设备、电网及节能等方面有****。该设备在起动、停止、故障保护、联络、报警、显示等方面、精心设计，与其它老式起动器相比较，具有自动化程度高、起动电流小（一般小于额定电流的1.3倍）、电气及机械冲击小、特别适宜于重载起动等特点，电网电压低亦能顺利起动，**了变压器的容量，是目前球磨机、提升机、破碎机、压缩机、风机、水泵等重负载的*理想的起动控制设备。

ZDR series liquid resistance starter is a new generation starting controller researched and developed to further improve starting performance of medium and large coil-winding asynchronous motor. By connecting a liquid resistance in rotor loop of motor controlled, which automatically runs upon starting of the motor, and disconnects automatically, steplessly and continuously as scheduled, the following deficiency was overcome: impulse current of obsolete starting controllers such as frequency sensitive rheostat, oil immersing rheostat and cast iron rheostat is strong, and starting process is not desirable. In this case, motor starts under ideal starting current and speed up evenly. The starting controller has significant advantages in protection of motors, electrical devices, power grid and conservation of energy. The controller’s design is elaborate in terms of starting, stopping, protecting against failure, communicating, alarming and displayer. In comparison with obsolete starters, it boast itself of such characteristics, as high level of automation, less starting current (usually being less than 1.3 times of rated current), less electrical and mechanical shock, and it is especially suitable for starting under heavy load. Even in the event that power grid voltage is low, it can start successfully. It reduces capacity of transformer. At present it is a most desirable starting controller for ball mill, hoister, crusher, compressor, fan and water pump under heavy load.

二、性能特点

II. Performance and features

1、、性能远优于频敏变阻器、油浸变阻器、铸铁电阻等起动器。

It is superior to frequency sensitive rheostat, oil immersing rheostat and cast iron rheostat in terms of performance.

2、起动电流小，小于电机额定电流的1.3倍。

Its starting current is less, which is less than 1.3 times of rated current of motors.

3、可连续起动5次。

It can start for 5 times in succession.

4、平滑起动：对设备无机械应力冲击，可延长机械设备及电机的**。

Its starting process is smooth: It has no shock of mechanical stress on devices, thus life of machineries and motors are prolonged.

5、可低压起动：6千伏电机5.5千伏、380伏电机340伏可顺利起动。

It can start under low voltage. It can start successfully in 5.5 KV for motors of 6 KV and in 340 V for motors of 380 V.

6、结构简单、可靠，全部操作自动化，安装、维护方便。

It is simple and reliable in structure. All operations are in automation. It is easy in installation and maintenance.