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Aluminum alloy sacrificial anode

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Thyristor potentiostat introduction

  • Author:Libo
  • Source:wkmeufh.cn
  • Date:2021-06-11
  • Click:0

The front and bottom of the cabinet is the electrical installation plate, which is installed from top to bottom respectively. The control circuit board CU1, CU2, CU3 ac contact (JC) fuse (FUA, FUB, FUC, FU1~FU4) phase shifting transformer (TB2), the varoror (YM1~YM3), At the bottom are ac input terminals (U, V, W, N) DC output terminals (+, -) and control cable terminals (X1).

The potentiostat is the hub equipment which provides dc current to the surface of the protected metal structure in the impressed current cathodic protection system

1, thyristor potentiostat

The product is a cabinet structure, rectifier transformer (TB1) is installed in the lower part of the cabinet, capacitor (C7) and filter reactor is installed in the middle, thyristor (KP1~KP6) is installed in the upper part of the cabinet.

The instrument doors in the cabinet from top to bottom are: Equipment output voltmeter (PV1), rest indicator (XD1), running indicator (XD2), fault indicator (XD3), reference potentiometer (PV2), output ammeter (PA), measurement switch (K2), manual regulation potentiometer (RV1), manual - automatic switch (K1), Automatic adjusting potentiometer (RV2) and stop (reset) - run switch (K1)

2, high frequency switch potentiostat

The power semiconductor device is used as the switching element to adjust the output voltage through the periodic on-off switch and control the duty ratio of the switching element, which becomes the switching power supply.

High frequency switching power supply ac input direct rectification, and then through the power switching components (power transistor, MOS tube, IGBT, etc.) composed of inverter circuit, the high voltage DC (single rectification about 300V, three rectification about 540V) into high frequency square wave (above 20kHz) high frequency square wave is reduced to low frequency square wave by high frequency transformer, Through the rectification filtrate, the dc output of non - disturbance voltage is obtained.

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