What is the difference between EPS power supply and UPS power supply? What is the function of EPS power supply?
SANTAK2025-01-06
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Two Core Emergency Power Systems: EPS vs UPS Comparison
In the field of power protection, EPS and UPS serve as two major emergency power systems with distinct missions. This article compares their technical parameters and application scenarios to highlight their core differences.1. Design Philosophy & Performance Differences
Uninterruptible Power Supply (UPS)
• Response time: 2-10ms instantaneous switching
• Protected equipment: Precision electronics (servers/medical instruments)
• Power quality: Voltage/frequency stabilization, solves 9 types of power issues
• Operation mode: Continuous online operation during normal mains power Emergency Power Supply (EPS)
• Response time: 0.1-0.25s brief interruption
• Protected equipment: Emergency systems (evacuation lighting/smoke exhaust)
• Power characteristics: Complies with GB17945 fire protection standards
• Operation mode: Automatic switching during mains failure
• Response time: 2-10ms instantaneous switching
• Protected equipment: Precision electronics (servers/medical instruments)
• Power quality: Voltage/frequency stabilization, solves 9 types of power issues
• Operation mode: Continuous online operation during normal mains power Emergency Power Supply (EPS)
• Response time: 0.1-0.25s brief interruption
• Protected equipment: Emergency systems (evacuation lighting/smoke exhaust)
• Power characteristics: Complies with GB17945 fire protection standards
• Operation mode: Automatic switching during mains failure
2. Three Core Functions of EPS
1. Life Safety Systems
Provides 90-minute standard power for fire elevators, smoke control systems, and emergency lighting to ensure safe building evacuation. 2. Intelligent Power Switching
Utilizes DSP digital signal processors for <1s automatic switching between mains/inverter power, meeting fire control requirements. 3. Power Conversion Hub
Built-in IGBT inverter modules and smart charging management, supporting lead-acid/lithium battery configurations with >90% conversion efficiency.
Provides 90-minute standard power for fire elevators, smoke control systems, and emergency lighting to ensure safe building evacuation. 2. Intelligent Power Switching
Utilizes DSP digital signal processors for <1s automatic switching between mains/inverter power, meeting fire control requirements. 3. Power Conversion Hub
Built-in IGBT inverter modules and smart charging management, supporting lead-acid/lithium battery configurations with >90% conversion efficiency.
3. Key Selection Criteria
• Load type: UPS for inductive loads, EPS for resistive loads
• Protection class: EPS requires IP30+ rating
• Backup time: EPS standard ≥90 minutes, extendable to 180 minutes for special facilities
• Protection class: EPS requires IP30+ rating
• Backup time: EPS standard ≥90 minutes, extendable to 180 minutes for special facilities