Lvsc-Sag Series Voltage Stabilization Device

Product Description

Introduction
LVSC series voltage stabilization device(namely Dynamic Voltage Distortion Compensator) adopts high-power power electronic technology and digital processing technology, and uses generalized second-order complex vector algorithm to quickly detect the transient process of power system voltage. While isolating the power supply of the transformer, the energy pre-stored in the super capacitor is fed back to the primary load to ensure the normal production.
The device adopts intelligent control mode, and flexibly sets the control logic according to the actual working conditions of the user. It is widely used in petrochemical, electronic, semiconductor, precision manufacturing, automobile, pharmaceutical, hospital, metallurgy, and machining industries that are sensitive to voltage. The best way to prevent "shake electricity".
According to incomplete statistics, more than 90% of the power quality problems in the modern precision manufacturing industry are caused by transient voltage fluctuations, and the impact and harm caused by such power quality problems to the precision manufacturing industry have become increasingly prominent.
Voltage Sag
IEEE standard and the national standard "Power Quality Voltage Sag and Short Interruption" (GB/T30137-2013) define: the RMS value of the power frequency voltage at a certain point in the power system is temporarily reduced to 10%-90% of the rated voltage (that is, the amplitude 0.1-0.9pu), and the phenomenon that it returns to normal after 10ms-1min is called voltage sag.
Voltage Swell
The phenomenon that the RMS value of the power frequency voltage at a certain point in the power system temporarily rises to 1.1-1.8pu, and returns to normal after a short period of 10ms-1min is called voltage swell.
short interruption
IEEE standard and national standard "Power Quality Voltage Sag and Short Interruption" (GB/T30137-2013) definition: The rms value of the power frequency voltage at a certain point in the power system suddenly drops below 0.1pu, and after a short duration of 10ms-1min The phenomenon of returning to normal is called short interruption of voltage.
Specification Sheet

Item	Parameter
Rated Capacity	150kVA(50-2000kVA)
Rated Voltage	400V (customized 690V/208V)
Frequency	50Hz± 5%
System structure	3P,TN
Correction Range	±20% uninterrupted 100% output Three-phase symmetrical drop residual voltage 60%, 100% output for 20s Three-phase symmetrical drop residual voltage 40%, ≥90% output for 5s Asymmetric drop residual voltage 30%, ≥90% symmetrical output 5s
Main circuit overload capacity	110% In long run; 150% In 30s
Bypass Mode Overload Capability	20KA/150ms,40KA/10ms
Output Voltage Accuracy	≤ ±1%
Output accuracy during dip	± 3%
Response time	100us
full transition time	< 10ms
Efficiency	>99%
communication port & protocol type	Ethernet(RJ45)/RS485
Display	HMI/SD card
IP class	IP2X ( IP4X(customized))

System structure
working principle

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