Q:hiam in the process of purchasing a flat.under the electrical specifications, the builder has specifid the following. please explain me what does it mean by3 phase power supply with automatic change over switch and what does it mean by RMU Transformer with Advanced Features

This electrical specification describes some aspects of the electrical distribution system for a block of flats (apartment building in USA terms). A 3 phase power supply is 3 live wires and a neutral with 400 volts or so between any two live wires and 230 volts or so between any live wire and the neutral. Each flat would be connected to one live wire and neutral. A change over switch is a switch that can switch the load from one power source to another. It could switch between two mains connections from the power company or it could switch between the power company mains and a standby diesel generator set. An RMU transformer is a ring main unit transformer. The transformer would be the step down or substation transformer from the transmission line voltage to the 400 volt level. There would probably be one transformer for all of the flats, possibly two if there are two mains connections from the power company. The RMU designation indicates that the transformer includes additional components such as the change over switch and main circuit breaker as a single piece of equipment. Advanced features might include such things as transformer temperature monitoring, load monitoring, and remote indication provisions. Unless the features are enumerated, it isn't a particularly useful description. It may or may not include features in addition to the minimum required by government regulations. If you are purchasing only an individual flat, this might offer some assurance that the electrical system is modern and reliable, but it is a very poor description to offer prospective purchasers of individual flats.

Q:Diesel generator belongs to special equipment

Special equipment refers to the safety of life, greater risk of boilers, pressure vessels

Q:i have a 7.5 onam diesel generator that runs for 15 min and shuts down i get a code 33 (overheating)I change coolant,cap and thermostat also checked air flow Still no luck.any ideas anyone

The onan fault code 33 is high engine coolant temperature fault

Q:how does a generator work powerlessly. i mean like if there is a black out people cna generate energy from like a generator. well then how come a generator work without the help of anything? (NOT TALKInG About the hydropower generator, the one that spins.

Generators *always* take some kind of mechanical energy to operate. In the case of a power blackout, backup generators use large diesel engines rated for hundreds of thousands of Horsepower, to run the electrical backup generators. Those diesel engines (obviously) run on diesel fuel so, there is your 'anything'. .

Q:I have a Powermate Maxa 5,000ER generator need to know how to start it, it is 14degrees here right now. Thanks.

For the best answers, search on this site

Q:I am build a 40KVA permanent magnet generator for diesel engine. the customer request the voltage is DC 28V after an rectifier. may be this 28V dc charge for the battery. can someone help me how much AC voltage should be output by the permanent magnet generator?permanent magnet generator----AC ???V----rectifier---28VDC---charge to battery.

In AC side connect a series high current Choke with less no of turns take the out put use a High current bridge Diodes with suitable heat sink.For regulating out put ,In the series choke place a Dc winding that can be excited by a separate dc circuit, Increase saturation will give same voltage decrease excitation will give drop in voltage.It is like magnetic Amplifier.Set the out put voltage with pre set point or a regulating circuit.I have given rough Idea If you want further detail PM me (This only cheapest method unless you have use thyristor or others to con troll may be expensive)

Q:I was thinking of some sort of battery that I could charge at home and take outside but must be able to store a lot of electricity like be able to run 600w for 18 hours. I think a generator will be too expensive.

Tap into your neighbors power line and run it all day. When they ask if your electric bill went up just say yeah, they must have raised the cost per unit of the electricity.

Q:I live in an area where storms are quite common, in fact the storm season approaches us. We have thunderstorms during which our lights start flickering. I am scared that one day light's would go out and we'd be left in the dark, to be safe, I want to build a small generator electric. I am not talking about toy generators or stuff like that. I want a small generator, one that I can use to charge cell phone (if dead) or power up the radio. Nothing too big either, mind you, I am not an engineer, I am a biologist, so I don't get all the connection stuff and such. So please go easy on the engineering lingo.

Since you are nor an engineer, I think you'd better bought that generator. From you need, I guess something with capacity of 1000-2000 watts is enough. Things you need to consider: Quiet or noisy one (of course the quiet one is more expensive) Fuel (gasoline, diesel, or LPG)

Q:I want to know if i can get a 40kvh generator (witch is usually ran by 4 cylinder diesel engine) to run with a water wheel and some poulies??

If you mean, 40 KVa generator,you may be able to run it by a water wheel, but you need a water discharge head of 50 to 100 ft. Most developed hydroelectric power have discharge heads of 300 ft.

Q:Electrical Power Generator, Capable of using JP-8 fuel.

1 IS DIESEL THE OTHER IS PJ-8 FUEL