Common thief method for transformer meters - Database & Sql Blog Articles

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

inductance

1. Change the current stealing method

(1) shorting the P1 end of the TA to the P2 end, so that most of the current does not pass through the primary winding of the TA, thereby bypassing the electric energy metering device to steal electricity;

(2) Disconnect the TA secondary side, short the TA secondary side or shunt the TA to make the current amplitude decrease from large to large or zero;

(3) Change the TA ratio, and replace the TA nameplate of the large current ratio with the TA nameplate of the small current ratio;

(4) TA ratio is too large, using the error characteristics of TA to steal electricity;

(5) Reverse the secondary polarity of the TA to reverse the electricity meter or reverse current stealing in the current coil of the energy meter.

2, the method of changing the voltage stealing

(1) Loss of voltage stealing, disconnect the TV insurance or install a switch in the TV secondary circuit, disconnect the voltage at any time to steal electricity;

(2) Undervoltage tampering, virtual voltage line. That is, the voltage wire core wire is broken, or the outer plastic is not peeled and directly crimped; the capacitor voltage is divided to reduce the voltage coil voltage.

(3) Reverse the TV secondary phase sequence to reverse the energy meter.

3. Change the structure and wiring of the energy meter

(1) Make a fuss on the meter, change the constant of the energy meter, or make the meter not display, damage the mechanical transmission part;

(2) change the position of the permanent magnet, make the gap between the magnet and the aluminum plate smaller, and the electric energy meter is slow;

(3) changing the number of current coils of the electric energy meter;

(4) Change the phase sequence wiring of the voltage meter and current of the energy meter, that is, the phase sequence is wrongly wired;

(5) Change the hot line and the zero line entering the electric energy meter, and adjust the live line of the electric energy meter to the zero line, and the load is connected between the live line and the applied zero line;

(6) Install remote control tampering device behind the energy meter terminal box or joint terminal box to steal electricity.

4, use the energy meter programmer to steal electricity

The characteristics of the power stealing are: neither changing the time of the electric energy meter nor adjusting the time period of the electric energy meter, and no need to turn on the electric energy metering device, but only using the electric energy meter programmer to change the proportion of the peak, flat and valley electricity consumption, that is, Reduce the peak and flat section of electricity, increase the low-level electricity, and keep the total electricity constant method to eat electricity price difference, so as to achieve the purpose of less electricity.