ST20 Three Phase Power Regulator Control Board

ST20 three phase digital thyristor trigger board adopts 32 bit industrial level high performance micro-processor, high digitized, exquisite quality design, support both network remote control and on-site control method. Fuzzy-PID parameter regulation openness, it combined with open loop regulation, constant voltage regulation, constant current regulation and constant power regulation four kinds of regulation methods into one board, user can choose them freely. Default alarm and interface parameter uses LED digital tube to display, parameters will be automatically saved after setting, and all are digital, no temperature shift. It is with strong anti-interference ability, unique anti-interference measures makes it can work normally even in an extreme interference environment. Strong universality, wide application range, with overheat protection, soft start, soft stop, over voltage protection, over current protection, short circuit protection, phase loss protection and output limit function. It is widely used in thyristor power supply, electric heating temperature control devices, electricity power regulator and other devices.
 

Technical specifications
1.  Working power supply: 220V ±15%, 50/60HZ frequency (Can be customized 380VAC/440VAC according to customer’s needs)    
2.  Main circuit working voltage: 220/ 380Vac ±15%, 50/60HZ frequency
3.  Voltage / Current regulation range: 0 ～100%                                    
4.  Trigger current: ≥ 500mA     Trigger capacity: ≤ 600A thyristor module
5.  Regulation stability: ± 1 VAC or 1%                                    
6.  Dielectric strength (voltage isolation): 3500 VRMS
7.  Suitable loads: Resistive load, inductive load, capacitive load and transformer primary and other loads
8.  No-load consumption: < 10W
9.  Mechanism: 180 * 125 * 38 mm (length * width * height)                  
10. Working temperature: -20℃ ～ 60℃, relative humidity: ≤ 90% 
 

Item	Power Supply	RS485 Communication	Insert Voltage Sensor	Constant Power	Display Methods
ST20A	AC220V	Yes	Yes	Yes	LED digital tube
ST20B	AC220V	No	Yes	Yes	LED digital tube
ST20C	AC220V	No	Yes	No	LED digital tube
ST20D	AC220V	No	No	No	LED digutal tube
ST20E	AC220V	Yes	Yes	Yes	LCD

 

Relevant peripheral accessories and products：
STP30 Constant Voltage Feedback Module；STP10 RC Absorption mModule；
STP20 Three Phase Synchronous Transformer Module；STP22 6 Pulse Trigger Module；
STP01 LCD Operation Display Screen Module；SFP20 IGBT Driver Module。
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