Electrical E-knoweldge

How to use powerflex 4m  VFD : -                                            This is front view of power flex 4m allen-bradly vfd. This vfd generally used up to 0.2 K.W (0.25 H.P) TO 11 K.W (15 H.P). choose your use of vfd by different catlog no. in this model of vfd.  (Note- choose proper vfd. check the voltage and kw rating otherwise the vfd can be hazardous) Installation : - This model of allen bradly is easy to install. behind the vfd there is arrangement to adjust it on C-channel in panel. so its easy to install. First i would suggest to install proper size of MCB to supply the vfd. Check the proper voltage level for supply. Give all the phase to L1, L2 L3 respectively on the top of VFD. Supply on the power and turn on the VFD. Check the VFD and after that i would suggest to connect the motor. Use the manual of powerflex ...

POWER FLEX 753 ALLEN- BRADLY :- This video is about to solve the problem in allen-bradly power flex 753 VFD. VFD showing heat sink over temp fault.  To see vfd temp in power flex 753 go to the parameter no 943-942 This parameters shows the temperature of vfd and IGBT respectively. DRIVE TEMP PCT is fault 943 which shows the indication operating temperature of the drive power section(heat-sink) in percentage of minimum heat-sink temperature. Sollution:- To solve this problem first check the cooling fan of vfd is working or not.   One of the cooling fan is exactly under the sensor. if the fan is failed . then the sensor may sense the temperature and trip the vfd. and shows that vfd is over -heated . Some case if you change the fan which is under the sensor then the sensor will not get heated and will work propely. if this cant help then there will some sensor problem. for that contact allen-bradly

Hello everyone.... Today i am gonna share you some information about MCB And MCCB this are very common items which are used in daily electrical industrial work. so it's very important to know how all they work in real work. WHAT IS MCB? An MCB ( Miniature Circuit Breaker ) operates as automatic switch that opens in the event of excessive current flowing through the circuit and once the circuit returns to normal, it can be reclosed without any man ual replacement. Application and Used of MCB : Short circuit Over current Over load Select proper MCB according to your load. The availbale size is 6 to 100 amps. WHAT IS MCCB? Moulded Case Circuit Breaker is known as MCCB. Rated current upto 1000 amps. The main difference between MCB and MCCB is  with the MCB rated under 100 amps with an interrupting rating of under 18,000 amps. Consequently, their trip characteristics may not be adjusted since they basically cater to low circuits. On the other hand, a...

                                 Variable frequency drives Hello guys...  Today i will share some basic  information about variable frequency drive (VFD). →WHAT IS VFD? vfd is nothing but variable frequency drive. it's device to control the induction motor's speed and torque mainly. by varying voltage and frequency of motor speed and torque can be adjustable in electro-mechanical combination. but there are many more use of vfd. (  VFD ; also termed  adjustable-frequency drive , “variable-voltage/variable-frequency (VVVF) drive”,  variable speed drive ,  AC drive ,  micro drive  or  inverter  drive ) VFDs are made in a number of different low- and medium-voltage  AC-AC  and DC-AC topologies                                 ...

hello guys .... lets talk about star-delta starter. The star-delta is very common in any industry. it is very basic and important.  most of interviewer asks about star-delta starter control wiring diagrams in interview.  so lets see how it works and understand it.           WHAT IS STAR-DELTA STARTER? → This is the reduced voltage starting method. Voltage reduction during star-delta starting is achieved by physically re configuring  the motor  wingdings.To do so we need star delta starter. Control wiring of star-delta starter:-                                   (This is star-delta starter contol wiring diagram) Let me tell you easy steps to make this diagram:- Parts we need in star-delta starter →3 Contactors    →1 Timer →NO,NC push-buttons →Auxillary contacts NO&NC Procedure to make wiring:- (1) Take neutral wi...

Hello guys... Today i will share information about D.O.L starter. which is direct on-line starter. The D.O.L starter are generally used for below 5 hp motor. some company's provide starters for 1-10 hp too. The D.O.L starters are very basics in any industries. These starters are used to run the induction motors.  Induction Motor draws more starting current during starting . to prevent such high amp and smooth starting the D.O.L are used. D.O.L STARTER               This is how D.O.L Starters are looks like. it may vary to manufacture to manufacture. D.O.L Starters contains :- contactor   ,overload thermal relay, NO and NC contactor for                                                                start and  stop buttons.          ...