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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First of all, when selecting an inverter, the power of the motor should be the basic principle. The rated capacity of the inverter is generally marked with KW and current. Under normal circumstances, when selecting an inverter, the corresponding three-phase general-purpose inverter is selected based on the rated KW of the motor. For example: fans, pumps and other equipment. Generally, when selecting a motor of grade 6 or above, it needs to be properly enlarged. The load needs to be controlled by a motor with a reducer, and the power of the inverter needs to be appropriately amplified. For example: cranes, coal mine winches and other equipment. The selection of the inverter should also be based on the load characteristics. If it is applied to frequent startup, the instantaneous current fluctuates greatly, or the load is heavy, the inverter with one or two gears larger can be selected. For example: sand making machine, ball mill and other equipment. When the occasion used for control is
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ZJSHUYI Talk about three dual power supply configuration schemes. www.sh...

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(1) If the two power sources are installed in the same place and share the same low-voltage power distribution cabinet, a four-pole switch shall be used for the incoming circuit or the switching circuit of the dual power sources. (2) The dual-circuit distribution transformers serve as backup power sources for each other, or the transformers and diesel generators serve as backup power sources for each other, and the neutral points of the transformers and generators are directly grounded nearby. If two sets of power supplies share a low-voltage power distribution cabinet, the incoming circuit should use a four-pole switch (3) If the two sets of power supplies are in the same room (common ground), but do not share low-voltage power distribution cabinets, the power transfer switch in the secondary power distribution equipment can be a three-pole switch Web: www.shuyitop.com; Tel/Fax: 0086-577-62840011 Wechat/WhatsApp: 008613355775769 #ZJSHUYI #Chinashuyi #shuyitop #swtiches #Dualpower
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ZJSHUYI Do you know what is a fire control cabinet? www.shuyitop.com; #S...

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Fire control cabinet (automatic control cabinet) is a kind of industrial control equipment that is more common in our lives, such as corridors, underground parking lots, gas stations and other public places. However, many friends do not know what it is called or what it is used for. The following ZJSHUI editor will explain what is a fire control cabinet. The fire control cabinet is a safe fire fighting tool provided by the pump factory. Its main purpose is to protect the pump motor from overvoltage, short circuit and overload. And also has a sound and light alarm function. It plays an important role in extinguishing fire and is also a fire safety device that can help control the fire after a fire occurs. There are many ways to start the control cabinet, including direct start, soft start, star-delta start, auto-coupling start, etc. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #ZJSHUYI #Softstartcabinet
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