A thyristor rectifier is a rectifier device that uses the semiconductor principle of silicon to convert alternating current into direct current. The PCVD preheating furnace temperature control system adopts a thyristor rectifier circuit, which features high rectification efficiency, large power, low noise, small size, easy operation and maintenance. One device provides 1 main terminal DC power supply, 1 gas terminal DC power supply, and 1 pump terminal DC power supply, among which: The electric heating rectifier of the preheating furnace provides three DC power supplies. Among them, the main heating system of the preheating furnace body adopts a three-phase fully controlled bridge rectifier circuit, and the temperature compensation systems at the gas end and pump end of the furnace body also adopt It is a single-phase fully controlled bridge rectifier circuit.
Key words：
Techicel Conditions
| Conditions of use | It is suitable for areas below 1000 meters above sea level, with an ambient temperature of 0 degrees Celsius to 40 degrees Celsius, relative humidity less than 85%, and good ventilation. |
| Input voltage | Three-phase 380V, 50HZ. |
| Input current | Three-phase line current 150A. |
| Output DC voltage | 1 The rated output voltage of the main end is 400V, the voltage regulation range is 0-400V 2 The rated output voltage of the gas end is 260V, the voltage regulation range is 0-260V 3 The rated output voltage of the pump end is 260V, and the voltage regulation range is 0-260V |
| Output DC current | 1 Rated output current at the main end 190A 2 Rated output current at the gas end (L) 35A 3 Rated output current at the pump end (R) 35A |
| Pressure regulation method | Triac phased voltage regulation. |
| Control mode | All three power supplies can be controlled in manual/automatic mode, the DC output voltage can be changed by adjusting the panel potentiometer in manual mode, and the DC output voltage can be automatically adjusted by Eurofins 3504 temperature control instrument in automatic mode |
| Overcurrent protection | When the output current exceeds a given current, the protection device will act and emit sound and light signals. |
Previous
Next
Previous
Next
FAQ
Here, common questions are answered and clarified
Voltage fluctuation fault
● Youdaoplaceholder6 Common causes:
- The external power supply is unstable or abnormal.
- There is a wiring error during the operation of the equipment.
- Environmental factors (such as temperature changes) cause voltage fluctuations.
● Solve the problem:
- Use a reliable power supply and avoid relying on external power sources.
- Check and adjust the connection method of the equipment.
- Reserve sufficient protection circuits or use step-down circuits to limit the impact of voltage fluctuations.
Short-circuit fault
● Youdaoplaceholder6 Common causes:
- Internal circuit short circuit (such as coil damage).
- External short circuit (such as short-circuiting of power pins).
● Solve the problem:
- Inspect the internal structure of the equipment, identify and repair the short-circuit points in the internal circuits.
- Use disconnected pins or external pins for protection and isolation.
- Reserve sufficient buffer layers or cooling systems to prevent the silicon wafers from overheating and getting damaged.
Current out-of-control (IQN) fault
● Youdaoplaceholder6 Common causes:
- The external current is too large, causing the silicon wafer to bear an excessively high current.
- During the operation of the o equipment, the load was too heavy, causing the silicon wafers to be overloaded.
● Solve the problem:
- Reserve sufficient safety current to ensure that the current during equipment operation does not exceed the designed maximum value of the silicon wafer.
- Use protection circuits or step-down circuits to limit the influence of external currents.
- Reserve sufficient buffer layers to prevent excessive current from damaging the silicon wafer.
Excessively high temperature fault
● Youdaoplaceholder6 Common causes:
- High-temperature environments cause silicon wafers to expand due to heat and get damaged.
- The cooling system failed to effectively cool the silicon wafers.
● Solve the problem:
- Reserve sufficient buffer layers or cooling systems to prevent the silicon wafers from overheating and getting damaged.
- Use a heat sink or coolant (such as water) to lower the temperature of the silicon wafer.
- Regularly inspect and maintain the cooling system of the equipment.
Overload fault
● Youdaoplaceholder6 Common causes:
- During the operation of the equipment, the load was too heavy, causing the silicon wafers to bear excessive current.
- If the external load exceeds the design maximum value of the silicon wafer, it may cause damage to the silicon wafer.
● Solve the problem:
- Reserve sufficient safety load to ensure that the load during equipment operation does not exceed the design maximum value of the silicon wafer.
- Use protection circuits or step-down circuits to limit the influence of external loads.
- Reserve sufficient buffer layers to prevent the silicon wafer from being damaged due to excessive load.
Summary of Solutions for Current Anomaly (IQN) Faults
● Test with a volt-ampere meter: Measure the output voltage and current to ensure they meet the design parameters of the silicon wafer.
● Apply phase difference test: Check the phase deviation of the silicon wafer to ensure its stability in AC signals.
● Dynamic calibration equipment: Dynamically adjust the equipment or external power supply according to the actual working environment (such as temperature changes).
Through regular Testing and Diagnosis processes, faults of thyristor equipment can be identified and resolved more accurately.
Certification
It has passed the ISO9001:2015 quality management system certification. In 2005, it was awarded the titles of "National Rectifier Product Quality Assurance and Honest Business Demonstration Unit" and "National AAA Quality Brand Enterprise" by the China Marketing Association. It has been rated as a "Contract-abiding and Creditworthy Enterprise" by the Wuhan Administration for Industry and Commerce for many years.
Project Case
Be courageous to leap forward, pursue excellence, forge ahead and strive for the first-class
Factory
The total number of employees in the unit, including the situation, number and composition ratio of technical personnel at all levels, currently has over 60 employees, including more than 18 engineering and technical personnel. Among them, there are 4 senior engineers, 10 engineers, and 4 assistant engineers and technicians.
Get A Quote
Through the above introduction, we believe you have a sufficient understanding of us and can cooperate with us with confidence. Please leave your information as soon as possible, and we will send you samples or album brochures by express delivery!
More Products
As a designated manufacturer of rectifiers by the former Ministry of Machinery Industry, we specialize in the production of electrolytic and electrochemical rectifiers. We have numerous production achievements and rich manufacturing experience in the electrolytic copper industry.