2000W Power Amplifier Soft Start Board High-power Isolation Transformer Soft Starter Reduce Startup Current Impact 1pc

Certification:NONE
Origin:CN(Origin)
Model Number:5000W Power Amplifier Soft Start Board

2000W Power Amplifier Soft Start Board High-power Isolation Transformer Soft Starter Reduce Startup Current Impact 1pc
product description:
     This soft starter board is used to reduce the start-up current, and it cannot remove the impact sound of the start-up speaker. Some customers said that there will be an impact sound when the speaker is turned on, and that it has no effect at all. Friends of the sound, please buy a speaker protection board
     The power of using 4 thermistors is larger than that of a single thermistor, and the power is suitable for use within 2000W.
     The circuit board with 2MM thickening is used, and the copper skin of the circuit board is also thickened with 2OZ. The relay uses a 30A relay. The 4 thermistors can withstand more power than a single one. The terminal block is used The terminal block with a large pitch of 9.5MM, the Z large current of 30A, is much larger than the pitch of 7.62. Even the step-down capacitors are imported AV capacitors, as well as the discharge resistance of the capacitors and the reverse of the relay. To protection diodes, and varistors, these can save a lot, (please compare the materials used by other companies, many of them can be saved, and there may be no problems for a while, and it will be hard to say after a long time. )
[Size] 66mmX62mmX40mm (height) with copper column
[Scope of application] Suitable for high-power or Class A power amplifier power input, or other high-start current machine applications.
main feature:
The function of the soft start board is to reduce the impact current at the moment of starting to reduce the impact of the machine on the power grid and extend the life of the switch. This board uses a high-current 30A pin relay and 4 thermistors to effectively protect the machine and prevent excessive startup current.
This board does not require auxiliary power supply, only 2 terminals, one is connected to the power input (before connected to a switch control), and one output is connected to the load, which is very convenient to use.
working principle:
At the beginning of power-on, the thermistor with negative temperature coefficient is used to supply power to the load to limit the instantaneous current. As the temperature of the thermistor rises, the resistance decreases, and the load is close to the normal working state. After about 3 seconds, the relay is closed and short-circuited. The thermistor, the power supply will directly supply power to the load through the relay contact, and the load will enter the normal working state. Thereby, the impact of the surge current on the line and the impact on other electrical appliances is effectively suppressed, and the instantaneous high current impact of the load is avoided and the life of the load is prolonged.