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How do you reduce Transformer 6VA to 3VA?
In 2 words, you cannot! It is like asking how can I make a 60W light bulb into a 30W light bulb. If you are wanting to know this because a specification dictates that you need a 3VA transformer then anything larger is OK. However, you must pay attention to the voltages on the transformer. Firstly, assuming that this transformer is to operate on the mains supply, it should have the correct primary voltage for the mains supply in your area. In most, though not all of Europe, it is standardised at 230V 50Hz. The secondary (usually the output) should have the desired voltage output. This, for example, might be 6V A.C. If it is the only output then, if it is a 6VA transformer, it will be able to supply 1A maximum current. If it is a 3VA transformer, supplying 6V, it will be able to supply a current of 0.5A maximum. The term VA is for Volt-Amps. It refers to the power that would be developed in a resistive load. Hence the secondary voltage (V) multiplied by the maximum current rating (A) gives VA. Thus, if you have a transformer rated at 12VA and the secondary voltage is 5V then the maximum current the transformer can supply is VA/V=12/5=2.40AAnother AnswerThe volt ampere rating of a transformer simply indicates the maximum load it can supply without overheating. The same transformer can supply ANY load below that value. So there's absolutely no problem operating a 6 V.A transformer at 3 V.A.
Will a 220v 60Hz US mig welder work with a 220v 50Hz supply in Africa?
Hi - it should be OK but the transformer might overheat a little if it is used intensively, so it need to be used carefully. The reason is that the magnetic flux in the core is 15-20% greater at 50 Hz, and that increases the heat produced in the transformer. Going in reverse, a 50 Hz transformer will work fine on 60 Hz.
Is it ok to have the dot on a current transformer upside down?
You are probably referring to a 'polarity mark'. This is very important if the CT's burden requires current to flow through it in a particular direction in order to work properly. For example, it won't make any difference if the burden's an ammeter. But if the burden is, say, a wattmeter, then it's very important to observe the CT's polarity mark when it is wired, otherwise the wattmeter might read 'downscale' (backwards). It's also very important when the CT supplies protection relays.
Is 1.66 amps OK for 2.0 amp?
If 1.66A is OK for a 2A rated device, will depend on what you are trying to power up and how much current it actually needs for startup and regular operation. - Neeraj Sharma
How do you measure if a transformer is functional without applying voltage?
The short answer is you can't. The long answer is that it is possible with the appropriate tools but still involves applying an AC voltage to the input terminals and observing what happens on the output terminals, but it may not be necessary to use dangerous voltage levels to do this. Why? A transformer relies for its operation on a continuously varying magnetic field. The field is induced by current passing through the primary, driven by the applied AC voltage. It in turn induces current flow in the secondary coil, wound concentric to the input. This induction only happens as the magnetic field changes, and you can only get a changing magnetic field by flowing current through the input, and that can only happen by applying an AC voltage to the input. The magnitude of the output voltage is related (to a first approximation, with no secondary load) to the input by the simple ratio of the number of turns in the secondary coil divided by the number of turns in the primary times the input voltage. This can not be tested using an Ohm meter. There are three basic kind of current flow - resistive, capacitative, and inductive. An Ohm meter can only measure resitive current flow. The other two require special meters known as L or C meters. The ideal transformer windings read pretty close to 0 Ohms resistively, so it is very difficult to tell if there are any short circuits between windings. An L meter can tell if there is in fact any magnetic capability. But the only true test is to input AC and measure the output with an AC volt meter. Or take it apart and see if it was OK (it won't bbe after you took it apart, of course!). That said, an ohm meter will tell you if either coil is broken (open circuit). Some transformers have one terminal of each coil tied to a common ground so an ohm test will not tell you if that is the case (OK) or if there is an umintended short between the coils (not OK).
Will a 4.74 amp transformer fry a computer designed for a 3.42 amp transformer?
No because the current rating of the transformer is a maximum allowable current. If the computer still takes 3.42 amps it will be OK provided the new transformer supplies the correct voltage.
What are the symptoms of a faulty oxygen sensor 1996 Honda civic?
Check Engine light is on. Engine OK when cold, but when reaches operating temperature it stalls at idle.
My oil gauge keeps falling to zero while I'm driving what would cause this?
Check the level of the oil in your engine. If it's ok, then you must have a faulty gauge.
Why is my VW polo overheating?
First point of order is to check the coolant levels, check your service manual if you don't know where it is. If that's ok, you're water pump is likely to be faulty, if that's ok it'll be head gasket or an ecu problem. fan mite not be coming on to cool car down
Why don't the brake lights work on a 1995 Chevy S-10 when everything seems to be OK?
There is a stoplight switch near the brake pedal; this may be faulty. Check your fuses also.
How do you reduce Transformer 6VA to 3VA?
In 2 words, you cannot! It is like asking how can I make a 60W light bulb into a 30W light bulb. If you are wanting to know this because a specification dictates that you need a 3VA transformer then anything larger is OK. However, you must pay attention to the voltages on the transformer. Firstly, assuming that this transformer is to operate on the mains supply, it should have the correct primary voltage for the mains supply in your area. In most, though not all of Europe, it is standardised at 230V 50Hz. The secondary (usually the output) should have the desired voltage output. This, for example, might be 6V A.C. If it is the only output then, if it is a 6VA transformer, it will be able to supply 1A maximum current. If it is a 3VA transformer, supplying 6V, it will be able to supply a current of 0.5A maximum. The term VA is for Volt-Amps. It refers to the power that would be developed in a resistive load. Hence the secondary voltage (V) multiplied by the maximum current rating (A) gives VA. Thus, if you have a transformer rated at 12VA and the secondary voltage is 5V then the maximum current the transformer can supply is VA/V=12/5=2.40AAnother AnswerThe volt ampere rating of a transformer simply indicates the maximum load it can supply without overheating. The same transformer can supply ANY load below that value. So there's absolutely no problem operating a 6 V.A transformer at 3 V.A.
Is it legal to sell faulty materials?
It depends on what happens because the product is faulty. If you are selling a computer that is faulty because the space bar sticks sometime, then that would be OK. BUT, if you were selling a computer that will explode killing everyone in a 100 yard radius, then this is not OK. Is the product dangerous? If not, then it should be OK to sell, as long as you tell the buyer what is wrong with it and don't try to defraud your buyer.
Rear 190 e electric windows stopped working fuse ok no power from centre console to rear how do you find fault?
take out the faulty switch fisrt on the console check 2 see if your getting voltage there if yes check the switch on door see if your getting voltage there if yes your motor is fried otherwise relace the faulty switch
How do you Fix turn signal if it just dont work civic1990 dx?
First check the fuse, if that is ok, check the bulbs, if they are ok check the flasher, if they are ok check the switch, if that is ok check the wiring.
1991 camaro RS won't start fuel OK no spark what are common causes?
check the battery and connections. make sure the automatic transmission is in the park position. could be the starter is faulty
What can it be if a Ford fiesta 1998 front and rear sidelights and dash lights are not working - not sure which fuse it is but am sure all are ok.?
the side lights would be fusedseparately so either if none of them are working and the fuses are ok it sounds like a faulty switch.but you would have to check for a 12v supply to the lights with a muilty meter to check it out properly
How do you determine the turbo charger is defective?
Visually check for shaft play, most manufacturer's sites have a spec. to check against. other than that... Check for damaged blades from debris. If all ok, the problem is elsewhere... exhaust leak, faulty wastegate, wrong turbine a/r, etc.
