Class A Professional Amplifier Electrical Shockproof High Power-Power Soft Start Board with 100A Relay Finished Product | Строительство

Характеристики

[name] high power power soft start circuit board [Relay] TVTE high power super large current 100A pure copper foot relay [Size] 67mmX60mmX30mm (height), ultra-small size [Scope of application] Suitable for high-end audio power input, or other large starting current machine applications. The power used is suitable within 2200W. Long-term load is best within 1200W! Power supply voltage adaptation range: AC 150V to 280V.       main feature:   The soft starter function is to reduce the inrush current at the startup to reduce the impact of the machine on the grid and extend the life of the switch. This board uses ultra-high current (100A) pure copper foot relay and large thermistor NTC 20D-20, which effectively protects the machine and prevents excessive starting current.   This board does not require an auxiliary power supply, only 2 terminals, one is connected to the power input (previously connected to a switch control), and one output is connected to the load, which is very convenient to use.   working principle:   At the initial stage of power-on, the load is supplied through a thermistor with a negative temperature coefficient. As the temperature of the thermistor rises, the resistance decreases and the voltage rises slowly, thereby effectively suppressing the impact of the surge current on the line and other electrical appliances. Impact. After about 5 seconds, the relay pulls in and shorts 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. Wiring sequence: power supply - switch - soft start - transformer