2014-10-23 Theft of power through hacking of Smart Meters. Using a digital radio to Hack a Smart Meter. FBI: Smart Meter Hacks Likely to Spread — Krebs on Security. The two researchers were slated to demo their smart meter hacking tools at the Shmoocon security conference earlier.

About product and suppliers:205 digital electric meter hack products are offered for sale by suppliers on Alibaba.com, of which energy meters accounts for 86%, plugs & sockets accounts for 1%.A wide variety of digital electric meter hack options are available to you, such as digital only, analog and digital, and analog only. You can also choose from single phase, three phase digital electric meter hackThere are 205 suppliers who sells digital electric meter hack on Alibaba.com, mainly located in Asia.

The top countries of supplier is China, from which the percentage of digital electric meter hack supply is 100% respectively.

Energy Meter or Watt-Hour Meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator,. Watt-Hour MeterThe basic unit of power is watts and it is measured by using a watt meter.

One thousand watts make one kilowatt. If one uses one kilowatt in one-hour duration, one unit of energy gets consumed. So energymeasure the rapid voltage and currents, calculate their product and give instantaneous power.

This power is integrated over a time interval, which gives the energy utilized over that time period. Series magnet carries a coil which is of a few turns of thickness wire connected in series with the line; whereas the shunt magnet carries a coil with numerous turns of thin wire connected across the supply.Braking magnet is a kind of permanent magnet that applies the force opposite to the normal disc rotation to move that disc a balanced position and to stop the disc while power gets off. Single Phase Electromechanical Induction Energy meterSeries magnet produces a flux which is proportional to the flowing current, and shunt magnet produces a flux proportional to the voltage. These two fluxes lag at 90 degrees due to inductive nature.

The interface of these two fields produces eddy current in the disk, utilizing a force, which is proportional to the product of instantaneous voltage, current and the phase angle between them. A braking magnet is placed over one side of the disc, which produces a braking torque on the disc by a constant field provided by using a permanent magnet. Whenever the braking and driving torques become equal, the speed of the disc becomes steady.A Shaft or vertical spindle of the aluminum disc is associated with the gear arrangement that records a number proportional to the revolutions of the disc. This gear arrangement sets the number in a series of dials and indicates energy consumed over time.This type of energy meter is simple in construction and the accuracy is somewhat less due to creeping and other external fields.

A foremost problem with these types of energy meters is their proneness to tampering, which necessitates an electrical-energy-monitoring system. These series and shunt type meters are widely used in domestic and industrial applications.Electronic energy meters are accurate, precise and reliable type of measuring instruments when compared to electromechanical induction type meters. When connected to loads, they consume less power and start measuring instantaneous. So, electronic type of three-phase energy meter is explained below with its working principle.

3-Phase Electronic Energy MeterThis meter is able to perform current, voltage and power measurements in three phase supply systems. By using these three phase meters, it is also possible to measure high voltages and currents by using appropriate transducers. One of the types of three-phase energy meters is shown below (given as an example) that ensures reliable and accurate energy measurement compared to the electromechanical meters. 3-Phase Electronic Energy MeterIt uses AD7755, a single-phase energy measurement IC to acquire and process the input voltage and current parameters. The voltage and currents of the power line are rated down to signal level using transducers like and given to that IC as shown in the figure.

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These signals are sampled and converted into digital, multiplied by one another to get the instantaneous power. Later these digital outputs are converted to the frequency to drive an electromechanical counter.