MY21 LED surge protective device has the reliable voltage protection
level and safe overloading characteristics, high surge discharging
capacity, used in the lighting protection of AC low voltage distribution
system. Adopted the high energy TMOV chipset, with fast response
speed, safe and reliable protection function. The product complies with
the standard of IEC 61643-1

 

1-Street Light

 

SPD is designed to limit transient overvoltages of atmospheric origin and divert current waves to earth, so as to limit the amplitude of this overvoltage to a value that is not hazardous for the electrical installation and electric switchgear and controlgear.

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• Uc: Maximum continuous operating voltage

This is the A.C. or D.C. voltage above which the SPD becomes active. This value is chosen according to the rated voltage and the system earthing arrangement.

• Up: Voltage protection level (at In)

This is the maximum voltage across the terminals of the SPD when it is active. This voltage is reached when the current flowing in the SPD is equal to In. The voltage protection level chosen must be below the overvoltage withstand capability of the loads. In the event of lightning strokes, the voltage across the terminals of the SPD generally remains less than Up.

• In: Nominal discharge current

This is the peak value of a current of 8/20 µs waveform that the SPD is capable of discharging minimum 19 times

Why is In important?

In corresponds to a nominal discharge current that a SPD can withstand at least 19 times: a higher value of In means a longer life for the SPD, so it is strongly recommended to chose higher values than the minimum imposed value of 5 kA.

• Imax: Maximum discharge curren

This is the peak value of a current of 8/20 µs waveform that the SPD is capable of discharging once.

Why is Imax important?

If you compare 2 SPDs with the same In, but with different Imax: the SPD with higher Imax value has a higher "safety margin" and can withstand higher surge current without being damaged
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All item comes with basic 12 Months Sellers Warranty, if item defective in 12 Month, we will offer replacement without extra charger(including shipping fee) after we receive the defective item.

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