The difference between EPS and UPS

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Comparison
Fire emergency power supply
Emergency lighting with built-in battery
investment
Save initial investment and avoid double investment
The initial investment cost is high, and repeated investment is required every year
Maintenance management
Maintenance-free
Need to manually charge and discharge one by one regularly
Practicality
Centralized fault monitoring and alarm to ensure timely use
No fault monitoring and alarm damage can not be found in time, can not guarantee the urgent use
life
The battery life is generally more than 5 years, cycle charge and discharge at least 500 times, the host life is more than 20 years
Due to quality and management reasons, the general life span is about one year
When used in emergency lighting, compared with traditional standby generators:
Comparison
Fire emergency power supply
Fuel generator set
Main and standby power conversion time
T <0.5 seconds
> = 15 seconds
Power supply quality
Voltage stability
Voltage instability
reliability
Fully automatic monitoring of the power grid, unattended
It needs to be supervised, and the human factor is big.
the effect on the environment
No pollution, no pollution, no smoke, no drainage, no heat, no noise, no vibration
Emission of smoke, vibration, noise, air cooling, water cooling, oil pollution, and flammability
Fire-fighting measures
Same as distribution equipment, no special needs
Fire extinguishing system shall be installed in the engine room and oil storage room
investment
Low overall investment
Comprehensive investment is high
Compared with UPS emergency power supply
Comparison
Fire emergency power supply
UPS emergency power supply
Reliability for fire emergency power supply
Resistant to harsh environments (water discharge, fire prevention, dust prevention) has a backup circuit, strong overload capacity,
Normally no power loss, no heat source
(1) No function to resist harsh environment (high temperature and water, fog, gas, etc. during fire fighting) (2) When working online, if the heat dissipation problem becomes a hidden fire hazard (3) The overload capacity is too poor Standby circuit
Service life
20 years
5 years
Impact on normal power grid
When the power grid is normal, it only serves to monitor the power grid and relatively isolate the power grid.
When working online, high-order harmonics and non-positive waves pollute the power grid, which has a certain impact on high-precision equipment.
Energy saving
Normally there is no waste
Normally waste 10 ～ 20%

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