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You may be thinking of the 'two-wattmeter method' for measuring three-phase power?
As a rule, it's always possible to use one less wattmeter than the number of conductors supplying a three-phase load to measure the power of that load. So, for a three-phase, three-wire, system, two wattmeters may be used to measure the total active power of the load -regardless of whether the load is balanced or unbalanced. The algebraic sum of the two wattmeter readings will give the total power.
What else can I help you with?
Do you need only a watt-meter in a three phase power?
To measure the power of a three-phase load, you need to use one less wattmeter than there are conductors supplying that load.
How does three phase energy meter works with two phase supply?
It's unlikely you have a two-phase supply. Two-phase systems (two phases, displaced by 90 electrical degrees) are very old, and there are very few two-phase systems around. Assuming you really mean 'two phase', t's unlikely, therefore, that you can use a three-phase energy meter using its standard terminals.
What is the use of CT METER?
is 3 phase Meter electicity to for the measurement of elektricity 3 phase.
Can you use single phase kwh meter for three phase load?
No, a single phase kWh meter is designed to measure the energy consumption of single phase loads only. To measure the energy consumption of a three phase load, you would need a three phase kWh meter specifically designed for that purpose. Using a single phase meter for a three phase load would not provide accurate energy consumption readings.
Reverse running of three phase meter?
The reverse running of a three phase meter is possible when one of the meter's two potential coils fails. This is a problem found typically on a Delta service. A three phase meter in this condition is damaged and will report lower energy use than actual.
What is a meter socket?
The electrical power that you use from the utility company has to be metered. This is done with a plug in watt meter. The meter socket is what holds the electrical watt meter. It is this meter that the meter reader reads to give you your monthly billing for the electricity that you used.
How do you figure kw in a three phase system?
The watt meter on three phase system is the same as the one on your house except that it monitors all three phases at once. The meter base is called a 7 jaw base which monitors the three phases and the neutral. The house meter is a 5 jaw meter. The watt meter is a totalizer which keeps track to the watts consumed by the dials on the face of the meter, which gets read monthly by the power supplier.
Why pt coil is not present in three phase watt meter?
A three phase watt meter's potential transformer and current transformer are located remotely from the metering cabinet. On large size bus installations it would be impossible to take the bus bars to the meter so it is done the other way around. Leave the Ct's and Pt's on the bus bars and use smaller wire to feed the meter in a remote accessible location. The utility company requires a metering cabinet over certain voltages and amperage be accessible to the meter reader. In some installations the metering cabinet is installed remotely on the outside of the building away from the electrical room.
Can you use a 60 watt light bulb in place of a 67 watt bulb?
yes, it can be used - single phase voltage of 230v. 50HZ is important
There are two units for energy What are they?
There are many more than two units in common use for energy. Some of them are: -- newton-meter -- joule -- foot-pound -- calorie -- watt-second -- kilowatt-hour -- horsepower-hour
Is 1 kw equals 5 watt per square meter?
Question doesn't make sense. But if you have something that use or generate 5W per square meter, then you get 1kW if you have 200 square meter.
Why you use two watt meter method?
The two-wattmeter method can be used to measure power in a three-phase system. Each current coil is connected in series with one of the live phase wires, while the voltage coils are connected between those and the third live wire.
