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24 Threads found on edaboard.com: Mains Generator
So you have access to the mains whilst you are diving?…..or you mean you have a generator on the boat which gives you the 230VAC, 50Hz sinusoidal power source? I.e., what is your power source?…85-265VAC or 230VAC, etc etc, and if off an inverter, is it sinusoidal or square wave? How long is the cable from the lighting power supply on
I guess he needs a quick load transfer from mains power to generator without affecting the load operation (interruption). I'm affraid it won't be possible without some sort of UPS or on-line inverters (running on battery or a VERY big capacitor - depending on load).
What is your mains frequency, 50 Hz?
Hello, I have an idea which I would like to discuss with you. I wanted to clean up the mains voltage of any waveform impurities, spikes etc. One could use a transformer and PSU to convert to DC and then feed this to a sinewave inverter, but I have thought of another way. Two motors from a microwave oven blowers (brushless moving magnet) will be co
hello everyone At my house when voltage is switched from generator to mains (220v ac) in the ups/aps, sometimes the computer restarts and states overvoltage has occured , but most of the time nothing happens . to solve this problem i am proposing 2 solutions : 1-design emi/surge filter using iductors/capacitors/and varistors. 2-using r
Hello, this is a bit weird question Is there any way to convert 50Hz mains (stepped down to 30V or so) to a high frequency signal, say 1-10MHz? Any PASSIVE technique you can think of. some kind of mixer or harmonics multiplier. I am not thinking of an oscillator, I said passive. Thank you
if your house hold load is below 8kw then you can directly conect the generator. but remeber that mains from electricty board should be disconected
It is possible for a generator to produce power that appears the same as the municipal mains power. In that case, no, it is impossible to tell one from the other. But most generators do not have precise control of frequency like the mains do to be part of the larger grid. So if you have a way of precisely measuring the (...)
You need to consider the generator and mains are not syncronous. Certain loads, like a refridg does not like to have its power bounced and most AC motors or compressors may be damaged if power is quickly switched when the two sources are not syncronous. The return to mains is where you are most likely to run into trouble without enough (...)
You must have a HUGE motorcycle to have a mains generator on board! I think if you measured 200V it would have been without any load, with the light switched on it would be much lower. In any case, what you are asking for depends on other conditions, in particular the current rating of the alternator and whether you have a battery in the circuit.
Most mains supplies are generated at 22KV in an alternator cooled by liquid hydrogen. If you try and generate at a higher voltage, you have no room for all the windings in the casing and the cooling fails to get to them. Then as said you transform the generator voltage to a convenient level for transmission, 33/66/132 KV. Frank
No problem you join the shaft of the alternator to the shaft of the motor, spin the alternator at the right speed, you have AC mains from a battery. Put a fuse in series with the output, to stop a short burning out the alternator. Frank
Hi, An even simpler isolated method would be a cheap mains coil relay activated by the generator with the contacts switching the micros port.
I hope you don't intend to use this in conjunction with Chloride battery UPSs, because they have a +-.5 HZ window on their mains sensing frequency range. i.e. The mains disappears, load gets transferred to UPS to give generator time to start BUT when the generator comes up to full volts the UPS cannot "see it" so never (...)
If its working ok on mains supply then check the frequency of your generator.
Classic filter design relies on the input and output impedances put on the filter. I suspect that you are building some sort of synthetic mains three phase generator. What sort of current will flow out of this 440V supply?. It has to flow through any series element, so that must be designed for that current flow. Also if any of the elements are res
I have a 50kva generator to run some pumps in a yard.The pumps need turn on every 5 hours throughtout the day.I have a 230v mains in the yard and i hope to use this to control the control circuitry to keep the timers up to date.I also need the supply to the pumps to lag at least 30 seconds behind the start up of the generator.A simple (...)
Simple solution is power a relay with mains and connect the mains in normally open and generator in normally closed positions. There are relays available which will operate in 230V
hi everyone i want to desing a automatic mains failure panel in which i have to measure and monitor the power and if power cut is there then i have to operate on generator. can anyone help me how to proceed . thanks
If u have a conventional generator that needs to be started by pulling on a rope..... then u need an automatic starter kit first, which roughly comprises of a motor, a battery, a solenoid switch and mechanical fixtures. Afterwards, all u need is a few relays to switch the gen on when the mains fail, and to switch it off when mains becomes (...)
Hi, There can be another problem: when you use a function gen, you may miss the isolation that the transformer gave you previously. For instance you use a oscilloscope to check the full wave rectifier then the transformer isolates the earth/ground of the mains supply from the oscilloscpe earth/ground but in case of the function gen there is n
Hi all, Does anyone now of good book, ebooks, circuits, links etc on how one would sync the power from a genarator to the power on your ring mains from your house. basically getting the phases the same so it does not go BANG... any help would be great thabkyou all manny :-)
Since all you need is a few mA, all you need is a transformer operated from the mains and some HV diode rectifiers and a capacitor. You main concern should be safety. Put a series current limiting resistor inside the box you put the circuitry in so that the short circuit current on the wires outside the box is below a few mA.
Ladder network is actualy voltage multiplier rectifier. You can use mains voltage to supply such ionizator. Use 1N4007 diodes and 50nF/400V capacitors and apropriate number of cells to reach 8kV. At the highest voltage solder needle. Behind the needle it's good to place wire connected on lowest potential. Such ionizator must be placed ih plastic ho