Schneider thermal relay selection method

Take charge of the basic knowledge of UPS power supply, read the equipment manual attentively, clarify the meaning of various warning signals, warning codes, command lights, and the causes of occurrence and how to deal with them to understand the effects of various switches and buttons of the equipment. Understand the various operations in charge of UPS power supply, understand the connection connection, and understand the method of substitution ...

It refers to the degree to which the average value measured repeatedly under certain test conditions is consistent with the true value, which is indicated by error. It is used to indicate the magnitude of the error in the system. In practice, control tests are generally carried out with standardized substances or normative methods, and when there are no standardized substances or normative methods, it is often used to add ...

1. The instrument test has a total of YN winding three-phase test, YN winding three-phase phase-by-phase test, low-voltage winding magnetization method test of iron-core five-column low-voltage angular transformer, low-voltage winding phase selection test and general four-terminal method of ironcore three-column low-voltage angular transformer. ...

AC inverter is the result of the high development of microcomputer and modern power electronics technology. The microcomputer is the center of the inverter, and the power electronics form the main circuit of the inverter. As we all know, the frequency of communication electricity sent from power plants is stable and constant, in our country it is 50 weeks per second ...

1. Check whether all switches are in the disconnected position; 2. Check whether there are foreign objects in the UPS uninterruptible power supply cabinet and transformer; Check whether the flat cable connection is correct and whether it is loose; 3. Check that the connected plug is ...

1. ATV11 series The Schneider ATV11 series is primarily used in three-phase asynchronous motor inverters with a power range of 0.18 to 2.2 kW. 2. ATV12 series ATV12 Schneider inverter for power scale 0.18k...

(1) The intent is different The intent of the verification is to carry out a mandatory comprehensive appraisal of the measuring equipment. This comprehensive identification of areas attributed to the value of the same value is a top-down process of value transfer. The verification shall identify whether the measuring equipment meets the specified requirements. This kind of regulation requires ...

1. Definition of miniature circuit breaker The electrical occupation is referred to as MCB, which is suitable for communicating 50/60Hz additional voltage 230/400V, additional current to 63A line overload and short circuit maintenance, and can also be used as infrequent operation conversion of the line under normal circumstances. ...

1. Question-F 05 (frequency error): This problem is caused by a problem with the soft starter processing the internal power signal, which is causing errors in the power supply frequency. This situation needs to be handled by the company's product development software design engineer. Mainly start the power supply circuit design ...

With the development of the electric power industry, now the electricity has been accompanied by every detail of our days, so the maintenance of the electric power industry, began to get more and more attention from everyone, because the circuit in the daily operation side, very simple because of overvoltage or undervoltage and present a certain problem, which ...

The UPS power supply can supply power for a period of time after the power is cut off, but how long can the UPS power supply be powered after the power outage? UPS power supply manufacturers said that the power supply time of UPS power supply is inconsistent according to the load power, the number of batteries and other factors. ...

1. Percussion hand pressure method When we use the instrument, we often encounter the phenomenon that the instrument is running well and badly, and most of this phenomenon is caused by poor contact or virtual welding. In this case, percussion and hand pressure can be used. The so-called "percussion" is the response to the ...

1. Check whether the appearance of the inverter is in good condition, including whether the indicator light is running normally, whether the task control function of the operation panel is complete, and carefully observe the appearance of the inverter in the operating state, and do the corresponding recording work; When repairing the inverter, check whether the voltage value and current value exceed the allowable ...

1. Save capital contribution Focus on central function (true color LCD, serial communication interface, USB connection, Ethernet interface, etc.) 2. Save space Compact structure planning, only 38mm thick The fuselage is reserved for communication wiring ...

1. Electrical equipment will produce higher harmonics when it produces abnormality and deterioration, and the abnormality and deterioration of motors, loads, and inverters are used to distinguish the higher harmonics from 2 to 40 times, and the data is changed by FFT, and the analysis is made on the basis of the analysis data of long-term savings.

The inch movement in Schneider inverter means that the control signal can drive the motor intermittently according to the certain rules, and the motor acts in strict accordance with the dynamic and stop instructions of the control signal, and the motor does not roll by inertia during the shutdown. It's like moving an inch and then stopping. The full name of Schneider inverter is "...

1. Selection of detection diode Point-contact germanium diodes are generally used for detection diodes, such as 2AP series. When selecting, the detection diode with high operating frequency, small reverse current and large forward current should be selected according to the specific requirements of the circuit. Despite the ...

Schneider inverter, the full name of "Schneider communication inverter governor", is a well-known inverter brand developed, manufactured and sold by Schneider Electric Group in France. It is mainly used to control and regulate the speed of three-phase communication asynchronous motor, with its stable performance, rich combination functions, outstanding ...

Protective functions can be divided into the following two categories: (1) After detecting the abnormal situation, the correction action is automatically carried out, such as overcurrent loss speed avoidance, regeneration overvoltage stall avoidance. (2) After detecting the abnormality, the PWM control signal of the power semiconductor equipment is closed, so that the motor automatically stops. As...

There are many series of contactors: LC1-SK series: below 6ALC1-K series: 6A-16ALC1-D series: 9A-150ALC1-F series: 115A-800ALC1-B series: 750A-1800A When installing, it should be in accordance with the regulations...