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Single phase watt hour meter My meter count is 00091! Is it 91 degrees or 9.1 degrees? There is no red bit, but I am confused!
It's 91 degrees
What's the meaning of 500 / 5 kwh x 100 on the watt hour meter?
That is to say, the watt hour meter is connected through a current transformer with a transformation ratio of 500 / 5. The meter index on the watt hour meter must be multiplied by 100 times to be the actual power consumption
An ammeter is an instrument for measuring (). The dial of the ammeter is marked with the letter (). Its symbol in the circuit is ()
An ammeter is an instrument for measuring (current). The dial of the ammeter is marked with the letter (a). Its symbol in the circuit is (I)
Hope to help you_ ∩)o
There are questions to ask
The watt hour meter is marked with "20 (40) a"
Rated current: 20A
Maximum current: 40A
Each small grid of the dial of an ammeter represents 1uA, and the internal resistance is RG. If it is refitted into an ammeter with a larger range, the dial will
How can we calculate the resistance value of RG / n-1
If the full scale of the original ammeter is Ig, then the full scale of the new ammeter is nig, and if the resistance in parallel is r, then there is
Ig×Rg／R＋Ig＝nIg
The solution
R＝Rg／﹙n－1﹚
This is what we need
RELATED INFORMATIONS
- 1. The electric kettle with the rated voltage of 220 V is connected to the home circuit and works normally. The indication of the electric energy meter is increased by 0.1 kW. H after 12 minutes of continuous power supply to calculate the electric power of the electric kettle
- 2. An electric water heater marked with 220v1100w is connected to the circuit of 220V, and it is powered on for 0.5h, so as to ensure the safety (1) What is the current through the electric water heater? (2) How much kwh of electricity is consumed? (3) How many joules of heat does the current generate in the electric water heater?
- 3. Is it possible to use a 2.5 (10) a 220 V electric energy meter for a 6000W instant electric water heater? The line is 2.5 flat
- 4. Five minutes later, the dial of the watt hour meter turned 110R What is the actual revolution of the meter? It is marked as 220v5a50hz 2500r / kW. H
- 5. he connected the electric appliance marked with 220v3a into the circuit separately, and after the electric appliance worked normally for 5min, the electric energy meter turned round He connected the electric appliance marked with 220v3a into the circuit separately. After the electric appliance worked normally for 5min, the rotary table of the electric energy meter turned 110R. What is the actual speed of the electric energy meter per kilowatt hour
- 6. An electric kettle marked with "220 V & nbsp; 550 W" works under rated voltage. The calculation is as follows: (1) the current through the electric kettle when it works normally; (2) the electric energy consumed by the electric kettle when it is energized for 6 min
- 7. Electricity meter 3000r / kW. H, connected to a lamp, 3 minutes to 150r, how much energy does the bulb consume during this time
- 8. Two bulbs, know the rated voltage and rated power, how to series in the circuit of the actual power How to calculate the actual power in series in the circuit (the circuit voltage is known)?
- 9. If two small bulbs with the same rated voltage and different rated power are connected in series in the home circuit, who is brighter? Please explain why
- 10. Connect the two lamps marked "220 V 60W" and "220 V 25W" in series into the 220 V circuit. Please analyze which of the two lamps is brighter
- 11. The maximum allowable current of a school's electric energy meter is 25A. The school has installed 50 40W electric lamps and 20 60W electric lamps. I want to install electric energy meter in the school How many can you press at least 40W
- 12. How to define current What is current? The formation of electric current,
- 13. What's the function of electric energy meter installation in the first home circuit Isn't it true that if you install it in the back and use electricity in the front, it won't work That is to say, the watt hour meter will not reverse as the ammeter
- 14. What is the function of energy meter and fuse in home circuit
- 15. The dial of an electric energy meter is marked with the word "3000r / kWh", which means that for every 1 kwh of electric energy consumed, the rotary table of electric energy turns 3000 circles. If only one bulb is connected in the room, and the rotary table turns 15R within 3 minutes, how many kWh and J are the electric energy consumed by the bulb during this period?
- 16. The rated current of a school's electric energy meter is 25A. The school has installed 50 40W electric lamps and 20 60W electric lamps. If you want to install more electric lamps, how many 40W electric lamps can you install at most?
- 17. (Lianyungang, 2010) Xiaoming's electronic energy meter is marked with the words "3200imp / (kW · h)". When his family only turns on a certain electrical appliance, it is found that in 10 minutes
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- 20. How many watts is AC 220 V 50 Hz? I want to see how many watts of power supply, but it only says AC 220 V 50 Hz. How many watts of power supply is this? It is pasted with yellow paper, and then nothing is written! My configuration is e2140 p5gc MX plus 8500gt maverick 160g 1G memory. I think it should be 350W or 330W?