200A 24V sodium hypochlorite DC rectifier

Product Parameters

Overview

In an electrolytic cell, a diluted sodium chloride solution undergoes a series of electrochemical reactions under the influence of positive and negative electrodes to produce a sodium hypochlorite solution. Sodium hypochlorite is a strong oxidizing agent; it generates hypochlorite ions in aqueous solution and then produces sodium hypochlorite through electrolysis. It possesses the same oxidizing and disinfecting properties as other chlorine derivatives.

Electrode reactions

• • Anode: 2Cl⁻ – 2e⁻ → Cl₂↑

• • Cathode: 2H⁺ + 2e⁻ → H₂↑

• • Overall reaction: NaCl + H₂O Electrolysis → NaClO + H₂↑

Applications

1. 1. Electrolysis of 2-5% brine

1. 1. Electrolysis via seawater connection

Structure

The water treatment power supply primarily consists of a rectifier-filter circuit, a full-bridge converter circuit, a high-frequency transformer, a high-frequency rectifier-filter circuit, an auxiliary power circuit, and a main control unit. The main control unit circuit mainly comprises phase loss protection, temperature protection, overload protection, short-circuit protection, and a PWM circuit with PI regulation.

The three-phase grid voltage is rectified and filtered after passing through the power switch, yielding a smoothed 520VDC supply for the inverter circuit. The inverter circuit primarily employs high-power MOSFET or IGBT modules to form a full-bridge converter. When the PWM output control signal drives the power modules through isolated drivers, two sets of diagonal transistors conduct alternately. This generates a high-frequency pulse voltage in the primary winding of the high-frequency transformer. The secondary voltage is transformed by the high-frequency transformer, rectified, and then supplies energy to the load.

Specifications

1. 1. The power supply can operate in either voltage-regulated current-limited mode or current-regulated voltage-limited mode, with seamless switching between the two states.

1. 1. DC output voltage regulation accuracy ranges from 50% to 100%. When input voltage fluctuates by 10% or load changes occur, the output voltage remains stable with regulation accuracy ≤0.5%.

1. 1. Incorporates filtering functionality to prevent interference with instruments during power-up, eliminate grid pollution, and mitigate current inrush phenomena.

1. 1. Phase Loss Protection: Automatically locks out when any phase is missing from the three-phase AC input. Resumes operation automatically after fault resolution.

1. 1. Overcurrent Protection: Automatically enters overcurrent shutdown and alarm state when current exceeds rated value.

1. 1. Short-circuit protection: In case of load short-circuit or internal component short-circuit, the circuit breaker automatically disconnects the power supply.

1. 1. Over-temperature protection: When abnormal temperatures of semiconductor components (e.g., IGBT, Schottky diodes) reach ≥80°C, the electronic switch on the main control board activates, locking the power supply to effectively protect the unit.

Multifunctional control panel