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introduction：Due to the high voltage circuit breaker operation is very frequent，It is affected by mechanical factors and electrical factors，Jumping often occurs。For a circuit breaker already in operation，When the fault is on the load side of the current circuit breaker，Once there is a jump is bound to cause skip tripping，Expand the scope of accidents and power outages，Therefore, it should be eliminated as soon as possible。
2018-06-25 Reading quantity 257
introduction：The difference between contactors and relays A relay is an electrical control device，Is when the input quantity（Excitation quantity）When the changes meet the specified requirements，An appliance that causes a predetermined step change in a controlled quantity in an electrical output circuit。Electromagnetic relays and contactors，They probably work the same way。Sometimes its the same device，Used in this circuit as a contactor，Another circuit is used as a relay。 The main function of the relay is to detect signals、transmit、For transforming or processing，
2018-06-23 Reading quantity 254
introduction：You may be exposed to this proximity switch in your daily life，Its usually found in shopping malls and some warehouses，But there are also switches between office buildings in a company，This is what we call the design principle of automatic opening and closing。In general, there are many kinds of relatively different types of switch special products on the market and the specified situation of the switch。
2018-06-22 Reading quantity 316
introduction：Fault analysis of Delta frequency converter，Inverter overcurrent fault can be divided into acceleration、retard、Constant velocity overcurrent。It may be because the acceleration and deceleration time of the inverter is too short、Sudden change of load、Uneven load distribution，Output short circuit caused by Germany。At this time, the acceleration and deceleration time can be extended、Plus energy consumption brake element、Carry out load distribution design、Check the line。If the load is disconnected or overcurrent fault，The inverter circuit is bad，Need to replace inverter。
2018-06-22 Reading quantity 436
introduction：Parameters of Siemens servo motors
2018-06-21 Reading quantity 387
introduction：Touch divides switches into two broad categories：Resistive touch keys and capacitive sensing keys，Namely, sliding button and touch button。 The touch switch of liquid crystal display adopts capacitive induction technology。We know that the human body conducts electricity，The circuit below the capacitive induction key can produce a uniform electrostatic field，When we move our finger over the key，The capacitance of the key surface is changed，The relevant circuits inside the display make judgments based on this change in capacitance，Implement the intended function。
2018-06-21 Reading quantity 252
introduction：Schematic diagram of solenoid valve Solenoid valves are industrial equipment controlled by electromagnetism，It is a basic element of automation used to control fluids，actuator，Not limited to hydraulics、pneumatic。It is widely used in our daily life，Familiar people know how the solenoid valve works：
2018-06-21 Reading quantity 251
introduction：To prevent the damage caused by the breakage of the neutral line and the ground line of the transformer and the increase of the ground resistance，So we have to do something about it。 1、Causes of disconnection of ground and neutral lines of transformers and increase of ground resistance： （1）The ground body is not properly buried，The installation process is sloppy，The ground body and ground cable connector are loose，The ground is too dry，The grounding resistance may be increased。 (2)Due to transformer design when installed，The function and importance of butt ground are not well understood，Neutral section selection is too small，When the three-phase load is unbalanced，The neutral current is too large and causes the burnout。In addition, due to external damage or ground wire theft and other reasons may lead to ground wire or neutral line break。
2018-06-20 Reading quantity 295
introduction：A winding motor controlled by a CAM controller，Generally, the rotor circuit adopts resistance unbalanced shorting，The normal gear is5file。The contact control resistance speed regulation adopts the rotor circuit resistance balance shorting method。
2018-06-19 Reading quantity 408
introduction：Users who have applied to related products may have some understanding，In order to use it smoothly，There is usually a lot of preparation that needs to be done before it can be put into use，The same is true for the use of electric pumps that we are talking about today，In order to better help everyone，Relevant technical personnel introduce it as follows： 1、The first choice is to check the voltage of the electric pump，Then check that the plug and socket are properly connected，Then you can work on the back。 2、We then connect one end of the oil pipe of the electric hydraulic pump to the joint of the machine，Connect the other end to the type of tool you need to use。 3、Before use, please pay attention to whether the quick connector at both ends is locked in place，The quick joint must be pushed firmly to the bottom，Screw in the jacket nut without loosening。
2018-06-15 Reading quantity 242
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