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AC 220V power port lightning strikes 1-5KA TMOV protection solution

2024-05-27 16:18:21

Scheme circuit diagram

The protection scheme provided by TDK EPCOS Electronics as shown above does not constitute a complete circuit design. Customers also need to verify the performance of actual complete circuits in their specific applications.

Scheme advantage:

1.Includes differential mode and common mode protection.

2.It meets the lightning strike 8/20us waveform 1-5KA protection requirements, TMOV has self-protection function.

Products used in the solution:

Product Series	Technical Parameters	Features	Ordering Code
Surge Arrester
EC600X	Nominal DC sparkover voltage V_sdcN: 540... 720V Impulse breakdown voltage: Measured value @100 V/us 99%<1200 V Measured value @1 kV/us 99%<1300 V Service life: Operate 10 times (8/20 us)5 KA Operation 10 times (50 Hz,1s)10 A Capacitance@1 MHz: <1 pF	High current handling capacity Rapid response Low capacitance High insulation impedance RoHS certification	B88069X0780S102
EF470X	Nominal DC sparkover voltage V_sdcN: 400... 588V Impulse breakdown voltage: Measured value @100 V/us 99%<700 V Measured value @1 kV/us 99%<800 V Service life: Operate 10 times (8/20 us)5 KA Operation 10 times (50 Hz,1s)5 A Capacitance@1 MHz : <1.5 pF		B88069X5080****
Varistor
T14K385	V_RMS: 385 V;V_DC:505 V l_max (8/20μs):6000 A W_max (2 ms) : 165.0 J P_max: 0.60 W	Over-voltage protection with integrated fuse Automatic protection under abnormal over-voltage Conditions It will not burn or burst under certain test conditions UL,VDE,IEC certification	B72214T2381K105
T14K420	V_RMS: 420 V;V_DC:560 V l_max (8/20μs):6000 A W_max(2 ms) : 180.0 J P_max: 0.60 W		B72214T2421K105
T20K385	V_RMS: 385 V;V_DC:505 V l_max(8/20μs):10000 A W_max (2 ms) : 248.0 J P_max: 1.00 W		B72220T2381K105
T20K420	V_RMS: 420 V;V_DC:560 V l_max (8/20μs):10000 A W_max (2 ms) : 273.0 J P_max: 1.00 W		B72220T2421K105