How to test the thyresitor or SCR by multmeter?
Answer Posted / a.p
the thyristor will conduct in the forward direction and in
the reverse direction, it will show reverse recovery
voltage, thus a high resistance. Or we may put a diode in
parellel with the thyristor. The current gets diveded when
the thyristor is conducting. Else all the current flows
through the diode alone. In this way the thyristor could be
checkd.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
what is high - pot test. what's its use?????
how is the testing of an REF relay? what are the test REF circuit having?
What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design
which cable is used for 15 Hp monoblock pump 3phase and service wire Distance is 210 feet please tell me cable size Armaured
1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?
what is the main parts of transformer? how it is functioning? pls giv the ans briefly.
How does the phase sequence controller works, how it identifies the phases? confirm working principle
where can the transformer having vector group Yny0 be used??
If VFD is On but no starting commond on it. so how many outpout voltages of VFD
HOW TO CALCULATE THE VT SIZING?
Classify driling machines.
In HI POT test what is reason for applying the AC VOLTS and DC VOLTS in different applications what is the nessesity for this ?
CAN CU XLPE/PVC CABLE BE USED INPLACE OF LOW NOISE SCREENED CABLE? KINDLY GIVE REASONS