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    What is Single Phase to 3 Phase Converter?

    Therefore, ATO single phase to 3 phase converter can provide a more reliable, economic, and convenient choice for these users. Traditional phase conversion system adopts rotary transformation technology, which has 50 years of history and simple product structure in early times. It consists of a transformer, three-phase motor, capacitor and relay control circuit. As long as the 220V power is connected, the auxiliary motor starts, the starting capacitor is disconnected and the motor is turned into a generator, thus producing missing phase. A fairly rough three-phase electric lead can be produced to provide power supply for other electrical equipment. Such a traditional conversion system doesn't have the adaptive control function, so there are many defects in its application. When the load varies widely, the three-phase output voltage will be unbalanced. At free load or light load conditions, the output voltage will rise to more than 25% of the rated output voltage; When the load is too large, it will also greatly reduce the output voltage, making it difficult for the device to start or stop running. However, the single phase to 3 phase power converter of ATO uses many important new technologies, the newly invented built-in micro-control computer control program makes our products to have a qualitative leap in conversion efficiency and performance.

    Input Line Reactor Price List

    The input reactor is used to restrain the sudden changes in the grid voltage and the current impact caused by overvoltage, smooth the peak voltage contained in the power supply voltage or the voltage defects caused by commutation of bridge rectifier circuit, thus effectively protecting VFD and improving power factor. It can not only prevent the interference from the power grid, but also reduce the pollution of the harmonic current generated by the rectifier unit to the power grid.

    What is an Oscilloscope Probe?

    The oscilloscope probe is mainly used to guide the measured voltage signal from the measuring point into the oscilloscope for measurement. Probe is crucial to the accuracy and correctness of the measurement results, as it's the electronic component connecting the measured circuit and the input of the oscilloscope. The simplest probe is a wire that connects the measured circuit and the input of the oscilloscope, a complex probe consists of resistor-capacitor unit and active devices. A simple probe has no shielding measures, so it's susceptible to external electromagnetic interference. Meanwhile, larger equivalent capacitance in it would increase the load on the measured circuit, thus leading to distortion of the measured signal.

    Gas Solenoid Valve vs. Water Solenoid Valve

    The gas solenoid valve is used for various ambient temperature, high temperature, negative pressure, low pressure and high pressure applications. The applicable fluid is air, nitrogen, oxygen, hydrogen, helium, carbon dioxide gas, argon gas, methane and other gas pipelines. Generally, solenoid valve for gas is mainly used in wide applications such as medical apparatus and instruments, rubber plastic machinery, clothing equipment, drying equipment and pharmacy industry, cooling industry, HVAC industry, electroplating coating industry, food and beverage industry and vacuum equipment industry.

    Circuit Breaker Price List

    ATO miniature circuit breaker is mainly used for AC 50Hz or 60Hz, voltage ratings 230/400V, 240/415V and 277/480V, and current ratings from 1A to 63A. The miniature circuit breaker is characterized with compact structure, reliable performance, strong breaking capacity and beautiful appearance. It can be applied for overloading and short-circuit protection of lighting, distribution lines and equipment of office buildings, houses and similar buildings. The mini circuit breaker is also used for not frequently on-off operations and conversions on the lines.

    How to Choose an Acceleration Sensor?

    For some Microcontrollers, the resistance of sensor connected must be less than 10kΩ when carrying out the A/D transformation. For example, the resistance of Analog Devices's analog acceleration sensor is 32kΩ. It can’t work normally on the PIC and AVR control board. So it’s suggested to read the controller manual carefully before purchasing the sensor, so as to ensure that the sensor can work normally.

    Soft Starter Troubleshooting

    Frequent starting leads to excessively high temperature, overheating protection of the soft starter thereof operates (starting frequency of the soft starter shall be controlled within 6 times per hour, particularly in heavy load). Protective elements act at starting, which makes the contactor unable to by pass, the soft starter works for long time and thus causing the protection to act (check peripheral circuit). Heavy load and long starting time lead to overheating protection (reduce load as far as possible when starting). Parameters of soft starter are improperly set. Long starting time and low starting voltage (increase the starting voltage). Radiator fan of the soft starter can't work normally (replace a fan).

    How to Use a Load Cell?

    The load cell has a certain overload capacity, but it shall still be prevented from overloading in installation. It should be notified that even a short-term overload can still cause permanent damage to the sensor. During the installation, a pad with the same height of the sensor could be firstly used instead if necessary, then replace the pad with the sensor. In normal operation, the sensor should generally be equipped with mechanical structure for overload protection. If the sensor is fixed with screws, the screw should have a certain fastening torque and screwing thread depth. Generally, high strength screws should be used.

    Single Phase to 3 Phase Converter Working Principle

    ATO Single phase to 3 phase converter has the function of filtering the grid disturbance and interference at the same time, which is a good performance of stabilized voltage and frequency power, to provide a more stable and pure power supply environment for the back end devices. Intelligent fan speed control system, low no-load loss. LCD display, high efficiency, easy installation. The output frequency 50Hz/60Hz can be set.

    Variable Frequency Starting vs. Soft Starting of Water Pump

    As everyone knows, direct starting of water pump would cause the water hammer effect. Namely when the water pump starts and stops, water impacts the pipe and cause a serious water hammer. When the power is off suddenly or the valve turns off quickly, a water impact wave generates due to inertia of pressure flow, which is like the knock of a hammer, so it’s called water hammer. Sometimes the force generated from water impact wave may be great and damage valve or pump, therefore, to avoid the negative effect of water hammer effect, the pump’s rotation speed should increase to the rated speed slowly when it’s started. Two methods are applicable, one is the variable frequency starting, another is the soft starting.

    Output Line Reactor Price List

    When selecting a output line reactor, its function shall be firstly determined, then the reactance ratio can be selected according to its functions, finally, the output line reactor capacity is selected according to the capacitor capacity (reactor capacity is equal to the capacitor capacity multiplied by reactance ratio). Selection of a reactor is complex, power grid quality and parameters, capacitor parameters shall be determined.

    Variable Frequency Drive Price List

    ATO sells VFD's power range from 1/2hp to 300hp, include single phase input and output VFDs from 1/2hp to 7.5hp, 110v/120v input VFDs from 1hp to 7.5hp, single phase input to three phase output VFDs from 1/2hp to 10hp, three phase input/output VFDs from 1hp to 300hp. All VFDs are manufacturer direct sale and quality guaranteed. Widely used in fans, pumps, lathes, cable machinery, printing and dyeing equipment, chemical machinery, plastic machinery, etc. The following are ATO variable frequency drive price lists for your reference. If you want more information, please go to ATO VFD products page.

    Solid State Relay Price List

    Solid state relay (SSR) is a non-contact switch which drives a high-current load with a small control signal. The solid state relay consists of three parts, namely, the input circuit, the isolation (coupling) and the output circuit.Compared with the electromagnetic relays, solid state relays are characterized with high reliability, no contact, no spark, no noise, strong anti-interference ability, long lifetime, and fast switching speed. Now SSR are widely used in automation equipment, CNC machines, remote control system, instrumentation, medical equipment and so on.
    ATO.com offer you single-phase and 3-phase solid state relays with load current ratings from 10A to 120A, available for DC control and AC control. The prices of ATO solid state relay are listed in the below table for your reference. For more information, please check the product page of solid state relays.

    120v VFD setup for 1-phase/3-phase 220v motor

    A device that converts alternating current with constant voltage and frequency into alternating current with variable voltage or frequency is called "variable frequency drive". VFD has the functions of voltage regulation, frequency modulation, voltage stabilization, speed regulation etc. VFD is generally used to control 3 phase AC motor in variable speeds. Now the three phase 220v-240v motor can run on single phase 120v power supply. ATO offers you 110v/120v input, 220v/230v/240v output VFDs. It can not only realize single phase input & output, but also convert single phase to three phase.
    Single phase 120v input VFD

    How to Measure the Safety Relay?

    Measurement method of a safety relay's DC resistance with a digital multiemter is similar to that with a pointer multimeter. According to the nominal DC resistance of safety relay, place the multimeter in an appropriate resistor and connect two test pens to the leading wire of the relay coil, then measure the resistance. Comparing the measurement result with the nominal resistance, if the error is within ±l0%, it's normal. If the resistance is obviously smaller, partial short-circuit fault exists in the coil; If the resistance is zero, the coil is short circuited; If the multiemter shows "1", the coil breaks.

    Safety Relay vs. Common Relay

    Safety relay has special color, generally yellow. Current safety relay acts reliably and flexibly, it's mainly used to control the power supply circuit. When an emergency occurs, the circuit controlled by the safety relay is disconnected by pressing the emergency stop switch, thus ensuring safety.

    Safety Relay Troubleshooting

    Safety relay is the main component of electric locomotive control circuit and monitoring protection system. When the electrical components or connection wires in the main circuit or auxiliary circuit break as the electric locomotive is running, the safety relay of corresponding monitoring protection system can transfer the fault into electric signal. On one hand, the electric signal will be fed back to the opening coil of main breaker to trip the main breaker, thus cutting off general power supply of the electric locomotive to protect it. On the other hand, the electric signal will be fed back to signal device (including mechanical signal and electrical signal) and make it to display different fault conditions, thus guiding the electric locomotive conductor to deal with faults timely and correctly. In this respect, the safety relay doesn't directly control the main circuit or auxiliary circuit, but it's of great importance to the electric locomotive.

    How to Use a Safety Relay?

    Measure coil resistance, resistance of a power relay coil can be measured with the R×10Ω band, thus judging whether the coil has open circuit. Measure actuation voltage and actuation current, with an adjustable stabilized voltage supply and ammeter, the power relay can be input with a voltage while the ammeter can be connected in series to monitor. Slowly increase the power supply. Voltage and record the actuation voltage and actuation current when the power relay is attracted. For accuracy, more operations can be repeated to get the average value. Measure release voltage and release current, connect wires as the test above. When the power relay is attracted, reduce the power supply voltage slowly and record the voltage and current as hearing the relay to release again. More operations can be repeated to get the average value.

    How Does an Infrared Thermometer Work?

    Understanding the infrared thermometers’ working principle, technical specifications, working conditions, operation and maintenance is the basis for users to correctly select an infrared thermometer or use it. An infrared thermometer consists of optical system, photoelectric detector, signal amplifier, signal processing and display output. The optical system of infrared thermometer accumulates the target infrared energy in its field of view. And the size of field of view is determined by the optical components and location of the thermometer. The infrared energy is focused on the photoelectric detector and converted to corresponding electrical signal. The signal is corrected by the amplifier and signal processing circuit according to the algorithm inside the instrument and the target emissivity and then is converted to the temperature value of measured target.

    Non-contact Infrared Thermometer vs. Contact-type Thermometer

    Infrared temperature measurement technology plays an important role in production, product quality control and monitoring, on-line fault diagnosis and safety protection, as well as energy saving. Compared with the contact-type temperature measurement method, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life. Non-contact infrared thermometer involves three major series of portable, on-line and scanning thermometer, with various accessories and computer software. Moreover, each series has different types and specifications. Among these thermometers with various specifications, it is very important for users to choose a correct type of infrared thermometer.