Zhejiang SHUYI Electric Co., LTD

Soft starter is mainly used to protect the soft start of the motor, a protection device of soft stop, so do you know what fields soft starter is suitable for? 1. Occasions where the starting current of the motor is required to be reduced. 2, normal operation of the motor does not need to have speed regulation function, only to solve the starting process of the working state. 3. The load is not allowed to step-down or slow down during normal operation. 4, the motor power is large (such as more than 100kw), starting will cause adverse effects on the operation of the main transformer. 5, the motor operation to the grid voltage requirements are strict, the voltage drop is not more than 10%U. 6. The equipment is precise and the starting impact of the equipment is not allowed. 7, the starting torque of the equipment is not large, can be no-load or light load starting. 8. Medium and large motors need to start energy-saving. From the initial investment point of view, it is more economical to u...

In principle, the selection of the #softstarter should be larger than the capacity of the motor being driven. The rated capacity of the soft starter usually has two kinds of nominal: one is nominal according to the power of the corresponding motor; the other is nominal according to the maximum allowable current of the soft starter. The following two points should be noted: 1) Based on the nominal rated capacity of the motor, the rated current of products with different voltage levels is different. 2) It is nominally based on the maximum allowable working current of the soft starter, and the rated capacity of products of different voltage levels is different. In addition, comprehensive consideration should be given, such as the load capacity of the soft starter, working system, environmental conditions, cooling methods, etc. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #softstartechnology #solidstatesoftstarte...

Soft starter input power failure 1. Check whether the input power is normal step by step. First, check whether the input power of the soft starter is normal. If the input power is abnormal, check whether the fuse is blown and whether the circuit breaker is out of phase. 2. If it is determined that the input power supply is normal, first consider replacing the soft-starting motherboard. This fault has occurred many times due to the quality of the motherboard. The soft starter panel has a black screen and no display 1. For such faults as blurry screen and black screen, most of them are quality problems, and the only way is to replace the soft-start motherboard. 2. If there is no display on the panel, first check whether the soft start control power supply (AC 220V) is normal. If the power supply is abnormal, then measure whether the fuse is blown, whether the circuit breaker is out of phase, and whether the control power line is disconnected. www.shuyitop.com; Tel/Fax: 0086-577-62840011...

Advantages of plastic-case circuit breaker: 1.MCCB protects the circuit from overload and short circuit. It's a safety device. 2.MCCB covers current ratings between 15 A and 2500 A and interrupt ratings of 480 V AC up to 150 kA. 3.MCCB ensures high performance in extremely small and compact sizes. 4. Due to the use of dual insulation technology, electrical accessories can be installed directly on the site where the circuit breaker is installed. This can significantly save time and therefore cost. 5.MCCB can have electronic thermal magnetic trip unit. You can adjust the current and time values using the trip unit. 6. The MCCB is also available in all versions: stationary, plug-in and withdraw-type, and it is easy to switch from stationary to plug-in/withdraw-type circuit breakers thanks to a special kit. 7. The MCCB comes with a complete range of accessories to meet a wide range of operational and automation requirements. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsA...

Contactor is generally composed of contactor electromagnetic mechanism, contact system, arc extinguishing device, spring mechanism, bracket and base and so on. For electric power operators, the most important thing we use is: AC contactor coil + contactor contact system. The contact of AC contactor can be divided into main contact and auxiliary contact. The main contact is normally open and applied in the main loop, and the auxiliary contact is applied in the control loop with the contactor coil. The operation of the circuit is controlled indirectly through the control of the contactor coil. Electrical suction of contactor. Normally open means initially disconnected, normally closed, initially switched on. After the contactor is electrically drawn, normally open and open, normally closed and disconnected. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #VFD #contactor #ACcontactor #ZJSHUYI #BypassContactor...

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 ai...

Main components: 1, thyristor: Each phase of a pair of reverse parallel thyristor, which is the main power component, is also one of the main costs of soft starter, reverse parallel thyristor manufacturers on the market are many, from cheap to expensive, quality is uneven. 2, control motherboard: basically every manufacturer has their own development of the motherboard, there are a lot of general motherboard on the market, the quality is not good or bad. Take the executive components on the motherboard - optocoupler, for example, if the quality is not good or bad, even if the other parts are good, the soft starter has to rest. Why? Because the optocoupler is easy to bad in harsh environment, and the soft starter itself is a large current environment, starting the current is large voltage drop, the working power supply fluctuation on the motherboard is also large, it is also easy to cause interference to these components, thereby indirectly leading to damage. www.shuyitop.com; Tel/Fax:...

The frequency converter is indispensable in our daily life, so what is the function of the frequency converter? (1) The frequency converter reduces the voltage fluctuation of the power line; (2) The inverter controls the starting current of the motor; (3) The power required by the inverter to start is lower; (4) Controllable acceleration function; (5) Adjustable running speed; (6) Adjustable torque limit; (7) Controlled stopping methods; (8) Reversible operation control; (9) Energy saving; (10) Reduce mechanical transmission parts. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #VFD #INVERTER #frequencyinverter #frequencyconverter #Chinashuyi #converter #inverters #vfds #vfdmarket #ZJSHUYI #SHUYITOP

AC contactors often use three arc extinguishing methods: double-break electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the moving and static contacts during the opening and closing process. Contactors with a capacity of more than 10A have arc extinguishing devices. AC contactors also have auxiliary components such as reaction springs, buffer springs, contact pressure springs, transmission mechanisms, bases and terminals. The working principle of the AC contactor is to use the electromagnetic force to cooperate with the spring force to realize the connection and disconnection of the contacts. The AC contactor has two working states: de-energized state (release state) and electrified state (action state). When the attraction coil is energized, the static iron core generates electromagnetic attraction, the armature is pulled in, and the connecting rod connected to the armature drives the contact to mov...

Maintenance requirements in the day-to-day operation of the frequency converter 1. Check whether the cooling system is normal, and clean the dust of the air filter. 2. Check whether the screws, bolts and other fasteners of the inverter are loose, and perform necessary tightening; for the parts with soldering and crimping terminals, check whether there is corrosion, discoloration, cracks, damage, etc., and also check the frame Whether the structural parts are loose, whether the conductors and wires are damaged, etc. 3. Check whether the connection of the control circuit board is loose, whether the capacitor is leaking, whether the lines on the board are rusted, broken, etc. 4. Check whether the filter capacitor is leaking and whether the capacitance is reduced. 5. Check whether the insulation resistance is within the normal range. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #VFD #INVERTER #frequencyinverter #frequencyconverter #converter #inverters ...

How to measure the quality of soft starter 1. Visual observation. Through visual inspection, we can observe whether the soft starter has the following phenomena: The soft starter has strong damage, and the damage is usually caused by collision, fire, water, dust, load short circuit, etc. Treatment method: It can be sent back to the manufacturer for repair depending on the damage. 2. Smell. Whether the soft starter body has a burnt smell, the damage is usually caused by excessive current or excessive load. Treatment method: It can be sent back to the manufacturer for repair depending on the damage. 3. Listen. Check the soft starter for any abnormal noise, and stop immediately if there is any abnormal noise. Do not connect power factor compensation capacitors to the starter output. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #softstartechnology #solidstatesoftstarter

MCCB is a plastic case type circuit breaker, referred to as: (MCCB), A circuit breaker: can be switched on, load and break the current under normal circuit conditions, can also be switched on under the specified abnormal circuit conditions, load a certain time and break the current of a mechanical switching appliance. Second, product selection and engineering design in civil architecture design of low voltage circuit breaker is mainly used for line overload, short circuit, over current, loss of pressure, under voltage, grounding, leakage, dual power automatic switch and not frequent starting of motor, operating purposes, the selection principles in addition to comply with the low voltage electrical equipment outside the use of environmental features and other basic principles of still should consider the following conditions: 1) The rated voltage of the circuit breaker shall not be less than the rated voltage of the line; 2) The rated current of the circuit breaker and the rated curren...

Zhejiang Suyi Electrical Technology Co., Ltd. is a professional engaged in electrical automation, intelligent and other fields of product research and development, manufacturing, sales and service as one of the standard model of high-tech enterprises. The strength of the company is strong, with a large independent production and processing base, and actively introduce advanced production and processing equipment, condensing a strong technical force in the industry, excellent design ability of the R & D team. During the production of products, the company has a strict management system and perfect reliable detection means, fully ensure the company's production of soft starter, frequency converter, soft start control cabinet, product quality, and can provide every customer with safe and reliable solutions in the industry. The company's product sales business throughout the world more than 120 countries, won the favor and support of consumers from all walks of life, in the fac...

AC contactor is one of the most commonly used low-voltage control appliances in power drag and automatic control systems. As an executive element, it is used to connect and disconnect lines, or to frequently control the operation of electric motors and other equipment. It is composed of moving and static main contacts, arc extinguishing cover, moving and static iron cores, auxiliary contacts and bracket shells. Model: AC contactor with a set of normally closed contacts with rated operating current 18A of CJX2. There's just no coil voltage. Be careful when using it. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #contactor #ACcontactor #ZJSHUYI #BypassContactor #frequencyinverter #inverters #vfds #Chinashuyi #shuyitop

Direct start is hard start. The starting current of hard start (direct start) is 3-7 times of the rated current of the motor. In the case of direct start (hard start), the situation of exceeding the rated current of the motor brings many restricted problems to the manufacturing process and structure of the motor itself. Because of this, people started brainstorming to solve this problem and invented soft start. Soft start, as the name suggests, is not to start directly, but to start slowly and little by little. For example, at the input end of the motor, the voltage is gradually increased from 0 to the rated voltage, and the frequency is gradually changed from 0 to the rated frequency, so that the starting current of the motor during the starting process is changed from the uncontrollable overload impulse current in the past. It becomes a controllable starting current that can be adjusted as needed. There is no impact torque in the whole process of starting the motor, but it starts and...

installation requirements 1. The installation and wiring of the soft starter should follow the corresponding installation standards and safety regulations. 2. It is strictly forbidden to wire the soft starter when it is powered on. 3. It is strictly forbidden to use a megohmmeter to measure the insulation resistance of the soft starter. 4. When the soft starter is working normally, it will automatically output bypass. 5. The soft starter must be connected to the load during debugging, which can be smaller than the actual load. 6. Active input is prohibited from the remote terminal of the soft starter. 7. When wiring the soft starter, the three-phase input power must be wired according to the specified phase sequence. 8. The number of soft starter starts is recommended not to exceed 20 times per hour. 9. The soft starter should be installed vertically, and should not be installed upside down, obliquely or horizontally, and the base of the installation should be firm and flat. www.shuyit...

1. Start curve - sets the time for voltage rise at start up Description: Ramp boost soft start. This STARTING MODE IS THE SIMPLEST AND DOES NOT HAVE current CLOSED-loop control. It only adjusts the thyristor conduction Angle to increase it as a function of time. 2. Stop curve -- set the speed of voltage decline at the stop time Note: When the motor is shut down, the traditional control mode is completed by instantaneous power outage. 3. Description of current limiting function: In this starting mode, the starting current increases gradually in the initial stage of motor starting, and keeps constant when the current reaches the preset value until the starting is complete. 4. Used to select the connection mode Note: The main circuit of the soft starter can be connected in different ways, that is, with the motor "external" or "internal", switch S1 in the corresponding position. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstart...

What if there is no suitable soft starter, can a high-power soft starter bring a small motor? Generally, the specifications of low-voltage motor soft start are 5.5-600KW, which are mainly used for starting and running protection of different power motors. Power cabinets using soft starters do not need to add other motor protection products, and only need circuit breakers, soft starters, measuring instruments and related buttons in the cabinet. Because the soft starter has integrated current and voltage protection, such as overcurrent, overload, undervoltage and lack of equality. There is really no need to add other protectors. If the high-power soft starter is used to debug the cabinet, it is best to have a light bulb. . For example, 200KW with a small motor can be started very quickly, because the rated current of the small motor is small, and the high-power soft starter cannot detect the running current, it will report a phase loss fault. . If debugging, bring a light bulb and look a...

Soft starter is a novel motor control device that integrates motor soft start, soft stop, light load energy saving and various protection functions. The main composition is a three-phase parallel thyristor and its electronic control circuit connected in series between the power supply and the controlled motor. Different methods can be used to control the conduction angle of the three-phase parallel thyristor, so that the input voltage of the controlled motor changes according to different requirements, and different functions can be realized. When the motor reaches the rated number of revolutions, the starting process is over, and the soft starter automatically replaces the thyristor that has completed the task with a bypass contactor, providing rated voltage for the normal operation of the motor to reduce the heat loss of the thyristor and prolong the service life of the soft starter. , improve its work efficiency, and make the power grid avoid harmonic pollution. The soft starter a...

20,000 square meters warehouse, plenty inventory and well managed. Inventory includes, Inverter , soft starter,micro switches, limit switches, travel switches, foot switches, toggle switches, solid state relays, For retailers, we accept small orders. We think this is really good for you For distributors, buy in bulk can get a better price. Save purchasing costs for you. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #inverter #forfrequencydrive #ACvfd #frequencyinverter #ZJSHUYI #SHUYITOP #softstarter

Main voltage range, main current range, control voltage, soft start time, soft stop time, initial voltage. Motor soft start is to achieve smooth start of motor and mechanical load by adopting technical means such as voltage reduction, compensation or frequency conversion, reducing the impact of starting current on the power grid, and protecting the power grid and mechanical system. Make the output torque of the motor meet the requirements of the mechanical system for the starting torque, ensure smooth acceleration, smooth transition, and avoid destructive torque impact; make the starting current meet the requirements of the motor's bearing capacity, and avoid the insulation damage or burning caused by the motor's starting heat; make the starting current Meet the requirements of relevant standards for power quality of the power grid, reduce the voltage sag amplitude, and reduce the content of high-order harmonics. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355...

CJX is a small contactor, 2 is the design serial number. 3210 indicates that the rated working current of the main contact of the contactor is 32A, and 10 indicates a set of normally open auxiliary contacts. AC contactors often use three arc extinguishing methods: double-break electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the moving and static contacts during the opening and closing process. Contactors with a capacity of more than 10A have arc extinguishing devices. The AC contactor also has auxiliary components such as reaction spring, buffer spring, contact pressure spring, transmission mechanism, base and terminal. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #contactor #ACcontactor #ZJSHUYI #BypassContactor #Chinashuyi #shuyitop

The motor can adjust the speed according to the frequency set by us, so that the purpose of stepless speed regulation can be achieved in a very wide frequency range. There are several ways of frequency conversion speed regulation. The main method of frequency conversion speed regulation is that we set a frequency command for the frequency converter. The most commonly used setting of this frequency command can generally be given through the operation panel of the frequency converter. Frequency command, pulse signal given, 0 to 10V voltage analog signal given or 0 to 24 mA analog current signal given, communication mode given and contact signal given, etc. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #VFD #frequencyconverter #acdrive #frequencyinverter #inverter #frequencydrive #acvfdvariablefrequencydrive #vfddriveprice #shuyitop #converter #inverters #vfds #vfdmarket #ZJSHUYI #Chinashuyi

The #softstarter has the advantages of small size, adjustable torque, stable start, small impact and soft stop function. #Softstarter has gradually replaced the traditional step-down starting method of asynchronous motor. So what should you pay attention to when choosing a low-voltage soft starter? 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 electr...

First of all, the purpose of the soft starter and the frequency converter is different. The main problem solved by the soft starter is to reduce the starting current of the large load and reduce the impact on the power grid. The startup of large equipment will generate a very large startup current, which will cause a large voltage drop. If the traditional star-delta and other step-down methods are used, it will not only cause a larger current impact to the power grid, but also cause a larger load to the load. Mechanical shock, in this case, a soft starter is often used to start, to achieve no shock throughout the start, so that the motor starts more smoothly, thereby reducing the capacity of the power supply. The frequency converter is mainly used in places with speed regulation. It can control the speed of the three-phase motor, such as the speed regulation of the spindle motor of CNC machine tools, the transmission control of mechanical conveyor belts, large fans, and heavy-duty mach...