5000W High Power Soft Start Board Power Amplifier Soft Start Board Isolation Transformer Limits Start-Up Current

• Origin:Mainland China
• Condition:New
• Type: Regulator
• Model Number:Power amplifier soft start board
• Supply :220V
• Dissipation Power:30A
• Application:Computer

This soft starting board is used to reduce the starting current and can not remove the impact sound of the starting horn. If you want to remove the impact sound of the starting horn, please buy a horn protection board, which is also sold in our store
First of all, this board is more expensive than others, but you can see where it is by comparing the materials. It uses a 2mm thickened circuit board, and the copper sheet of the circuit board is also thickened by 2oz. The relay uses a 30A Jintian relay, which is more expensive than ordinary Songle relays. 10 thermistors bear more power than a single one, The wiring base uses a 9.5mm large pin pitch wiring base, and the maximum operating current of 30a is much larger than that of 7.62 pin pitch. Even the step-down capacitor uses the AV capacitor of imported manufacturers, as well as the discharge resistance of the capacitor, the reverse protection diode of the relay, and the varistor, which can save a lot. (please compare the materials of other companies, many can be saved, There may not be any problems at the moment. It's hard to say after a long time)
[size] 84mmx6mx40mm (height) including copper column, hole spacing 76.5 * 55.5mm
[scope of application] suitable for high-power or class a power amplifier power input, high-power isolation transformer or other high starting current machine applications. The applicable power is within 5000W. 10 20 diameter high-power thermistors with greater power. Please note that those who dare to scale 3KW to 4kw with only a single thermistor know that it is a virtual standard power, and may not even reach the pe power
Main features:
The ftion of the soft start board is to reduce the impulse current at the moment of startup, so as to reduce the impact of the machine on the power grid and prolong the service life of the switch. This board uses high current 40A pin relay and 4 thermistors to effectively protect the machine from excessive starting current.
This board does not need auxiliary power supply and only has 2 terminals, one connected to power input (connected to switch control before) and one output connected to load. It is very convenient to use.
working principle:
At the initial stage of power on, power is supplied to the load through the thermistor with negative temperature coefficient to limit the current at the moment of power on. As the temperature of the thermistor increases, the resistance decreases, and the load approaches the normal working state. After about 3 seconds, the relay is pulled in and the thermistor is short circuited. The power supply will directly supply power to the load through the relay contact, and the load enters the normal working state. Thus, it can effectively restrain the impact of surge current on the line and other electrical appliances, avoid the impact of instantaneous large current and prolong the service life of the load.
Note: the soft start board is only used to limit the starting current and prevent impact. It will be powered on when starting. It is not a delay switch. If it needs to be powered on for a period of time, please use the optional delay switch（ Time delay switch is also available in our shop. The relay is connected to output after 1 second to 30 seconds after 220V is powered on, and the time is adjustable). Please see it clearly before purchasing. This can not be used as a reason for returning or replacing goods. Thank you for your support and cooperation!