ZJSHUYI How to choose a soft start.www.shuyitop.com; #softstarter #motor...

1. Selection of overload protection device Thermal overload relay with overload protection, phase break protection and temperature compensation function shall be selected for the overload protection device of soft start device. Specific selection, to make the working current of the motor within the range of setting current of the thermal element. The rated current value of the motor should be close to the lower limit of the setting current range of the thermal element for equipment that is prone to overload when working. 2. Electrical wiring and component arrangement of low-voltage soft starter cabinet Electrical wiring of low-voltage soft starter cabinet is shown in Figure 2. The electrical components in the cabinet are arranged in the order shown in the diagram, so that the main wiring is short and not crossed, which is convenient for copper bar connection. The soft starter is installed on the right side of the contactor and is not affected by the heating of other components. The distance between the soft starter and the side wall of the control cabinet and other components must be 2100mm to facilitate the heat dissipation of the soft starter 3.Selection of bypass contactor At the end of #softstart, the motor has been running on the rated voltage, so the ac contactor can meet the requirements according to the rated current of the motor. It should be noted that when wiring the cabinet, the soft starter and the contactor should be connected in the same phase, and not be connected with the wrong phase sequence. 4.Selection of isolator and fuse The isolator in the soft starter cabinet can choose the isolator switch or the plastic case circuit breaker with isolation function. Small power soft start cabinet should choose the isolation switch fuse combination of knife melt switch. It not only plays an isolation and protection role, but also can reduce the project cost. When the rated current of the disconnecting switch is greater than the rated current of the motor, it can meet the operation requirements. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #softstartechnology #solidstatesoftstarter #acmotorstarter #singlephasesoftstarter #24monthswarrantysoftstarter #voltagerampstartsoftstarter #15-400kwintelligentsoftstarter #3phasesolidstatesoftstarter

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ZJSHUYI Usually the soft start system is composed of softstart device. w...

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Usually the soft start system is composed of softstart device, peripheral circuit and motor load. Therefore, the objects protected by the soft start system are also the soft start device, peripheral circuit and motor load. The purpose of protecting the soft start system is to ensure the safe and reliable operation of thyristor components, #softstarter equipment and circuits, and not damage or cause safety accidents under various abnormal working conditions. The premise of #softstarter protection is that the design of the soft starter itself should be correct. The thyristor components are correct and used correctly, the drive circuit and the control circuit are reasonably designed and matched with each other, so that the device can work in a good state. These measures are the basis for the safe and reliable operation of the soft starter. Only under this premise, can the devices, circuits, and equipment fail less and not fail from the inside, and the optimized system design should aim ...
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