Can UPS Power Optimize the Quality of Mains Electricity?
SANTAK2025-01-06
UPS Power Supply Sales Qu: 13775032303 Same number for WeChat
Seven Power Quality Issues in Mains Electricity and UPS Solutions
In modern industrial environments, the mains power grid has various power quality issues that may cause equipment downtime, data loss, or even hardware damage. UPS power supplies not only provide power failure protection but also effectively optimize the following seven types of power quality issues:
▍Instantaneous Overvoltage Protection
When encountering a 20000V high-voltage pulse (lasting from one millionth to one ten-thousandth of a second), the UPS absorbs transient energy through a multi-stage filter circuit to ensure the equipment terminal voltage remains within a safe range.
▍Voltage Sag Compensation
For situations where the mains voltage drops to 80%-85% of the rated value (lasting 1-3 cycles), the UPS automatically switches to battery power supply mode to maintain a constant output voltage.
▍Surge Suppression Technology
When detecting a voltage exceeding 110% of the rated value (lasting ≥1 cycle), the MOV varistor built into the UPS responds in nanoseconds to conduct excess energy into the grounding system.
▍Sustained Low Voltage Regulation
For long-term low voltage issues, the UPS uses double-conversion online technology to continuously output a pure sine wave of 220V±1% or 380V±1%.
▍Frequency Offset Correction
When the mains frequency deviation exceeds ±3Hz, the UPS internal phase-locked loop technology maintains the output frequency stable at 50Hz±0.1%.
▍Cable Noise Filtering
Through a three-level electromagnetic compatibility design (EMI/RFI filters, isolation transformers, surge suppressors), high-frequency interference in the 10kHz-30MHz range can be attenuated to below -60dB.
▍High Voltage Spike Protection
For instantaneous spikes ≥6000V, a combination of gas discharge tubes and transient voltage suppressor diodes is used for protection, with a response speed reaching the 1ns level.
Intelligent Dual-Mode Operation Mechanism
When the 380V mains electricity is normal, the system automatically enters online mode: the rectifier powers the inverter and charges the battery; when abnormalities are detected, it switches to battery power supply with a 0ms switching time. The battery low-voltage protection threshold is set at DC192V±2V (48V battery pack) to ensure safe system shutdown.