Qingdao Lanyu Transformer Co., Ltd
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RS series intelligent online motor soft starter cabinet
RS series intelligent online motor soft starter cabinet I. Overview Intelligent online motor soft starter is a new type of starting equipment designed
Product details
RS series intelligent online motor soft starter cabinet


I. Overview
The intelligent online motor soft starter is a new type of starting equipment designed and produced using power electronics technology, microprocessor technology, and modern control theory, which has the current level. No need to install communication adapters. This product can effectively limit the starting current of AC asynchronous motors during startup, and can be widely used in loads such as fans, water pumps, conveyors, and compressors. It is an ideal replacement for traditional voltage reduction equipment such as corner conversion, autotransformer voltage reduction, and magnetic control voltage reduction.

2、 Characteristics
1. Starting method: Select different starting modes and parameter settings according to the characteristics of the load, which can greatly improve the starting effect of the motor; Three starting methods: voltage ramp starting - available output torque; Current limiting starting - can effectively limit the starting current; Jogging - can achieve the function of test drive and debugging.
2. High tech performance: Due to the use of high-performance microprocessors and powerful software support functions, the control circuit is simplified. No need to adjust circuit parameters. To achieve consistent, accurate, and fast execution speed; High strength anti-interference function
3. High reliability: All electrical components of the motor soft starter have undergone strict screening, and its main control board must also undergo a 72 hour high-temperature cycle test and vibration test to ensure the high reliability of the factory product;
4. Optimized structure: The unique and compact modular structure, as well as the connection method between the upper and lower lines, are very convenient for users to integrate and complete;
5. Multiple protection functions: The motor soft starter has multiple protection functions for the starting of the motor (such as overcurrent, overload, phase loss, overheating, etc.), which can reduce the integration or complete set cost and simplify the circuit.
6. Keyboard setting function: Convenient and intuitive display keyboard, which can set and modify parameters such as start stop, operation, and protection according to different loads.

3、 Working principle
Motor soft starter (soft starter) is a novel motor control device that integrates motor soft start, soft stop, light load energy-saving, and multiple protection functions. It is called Soft Starter abroad. The soft starter adopts a three-phase anti parallel thyristor as the voltage regulator, which is connected between the power supply and the motor stator. This type of circuit is like a three-phase fully controlled bridge rectifier circuit. When using a soft starter to start a motor, the output voltage of the thyristor gradually increases, and the motor gradually accelerates until the thyristor is fully conductive. The motor operates at its rated voltage mechanical characteristics, achieving smooth starting, reducing starting current, and avoiding overcurrent tripping during startup. When the motor reaches the rated speed, the starting process ends, and the soft starter automatically replaces the completed thyristor with a bypass contactor to provide the rated voltage for the normal operation of the motor, reducing the heat loss of the thyristor, extending the service life of the soft starter, improving its working efficiency, and avoiding harmonic pollution in the power grid. The soft starter also provides soft parking function The process of soft parking is opposite to that of soft starting, with the voltage gradually decreasing and the speed gradually decreasing; To avoid torque shock caused by free parking.

4、 Specification parameters and dimensions
model Motor power operating current Cabinet size LXWXG (mm) model Motor power operating current Cabinet size LXWXG (mm)
RS-22KVA 22KVA 44A 400X300X800 RS-132KVA 132KVA 264A 500X400X1200
RS-30KVA 30KVA 60A RS-160KVA 160KVA 320A
RS-37KVA 37KVA 74A 500X300X800 RS-185KVA 185KVA 370A
RS-45KVA 45KVA 90A RS-200KVA 200KVA 400A
RS-55KVA 55KVA 110A RS-220KVA 220KVA 440A
RS-75KVA 75KVA 150A RS-260KVA 260KVA 520A
RS-90KVA 90KVA 180A 500X380X1000 RS-280KVA 280KVA 560A 550X400X1400
RS-110KVA 110KVA 220A RS-320KVA 320KVA 640A
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