Working principle of emergency power supply
When the grid power is normal, the emergency power supply transfers grid power to the load while storing energy. This type of product is mostly used in high-rise buildings, airports, telecommunications network data centers, hospitals, major venues, and other engineering projects. Featuring the following features:
(1) When the power grid is powered, it is in a static state with no noise, less than 60dB, and does not require smoke exhaust or seismic protection.
(2) Active switching can achieve unmanned operation. The switching time between the power grid and EpS power supply is 0.1s-0.25s.
(3) Strong load-bearing ability, EpS is suitable for equipment with inductive, capacitive, and comprehensive loads, such as fire elevators, water pumps, fans, emergency lighting, etc.
(4) Reliable application, dual machine hot standby method can be adopted in main locations to ensure reliable power supply in case of accidents and fires. The lifespan of the host can reach more than 20a, and the battery life can reach more than 5a-10a.
(5) Adapted to harsh environments, can be placed in basements or distribution rooms, and can be set up on-site for emergency load applications, reducing power supply lines.
(6) For certain high-power electrical facilities, such as fire water pumps and fans, the drying machine mesh belt can be directly connected to the motor through frequency conversion and then enter normal operation mode.
(7) Emergency standby time, with a scale of 60 minutes (with delay interface).
Classification of EpS emergency power sources
Comparison between EpS power supply plan and built-in battery lighting plan
Due to the highly dispersed nature of built-in battery lighting fixtures, there may be as few as a few hundred points and as many as several thousand points in public buildings. However, many built-in battery lighting fixtures do not allow for simultaneous charging and discharging maintenance, and must be protected one by one (while also protecting may cause the emergency lighting system to malfunction). The request from the lamp manufacturer for monthly charge and discharge protection, calculated based on the maintenance time of 3-6 hours per lamp, is almost impossible to achieve in reality. Even if implemented, it consumes a large amount of manpower and financial resources. This has become the biggest advantage of EpS compared to built-in battery lighting fixtures. Due to its many advantages, EpS has gained a significant market share in the field of emergency lighting in just a few years.
Characteristics of EpS emergency power supply
⑴ HBED series EpS (0.5-10KW)
The HBED series EpS consists of single or dual power input products (input voltage 220Vac or 380Vac, output voltage 220Vac), suitable for emergency lighting and accident lighting loads.
(2) HBES series EpS (2.2-400KW)
The HBES series EpS consists of single and dual power input products (input voltage 380Vac, output voltage 380Vac), which can be used not only for emergency lighting and accident lighting, but also for inductive loads such as fire elevators, rolling shutter doors, fans, water pumps, shower pumps, water supply pumps, or mixed power supply.
(3) HBES/B series EpS (2.2-400KW)
The HBES/B series EpS consists of three types of products: single inverter single load, single inverter single load one for use and one for backup, and double inverter single load one for use and one for backup (input voltage 3800Vac, output voltage 380Vac). It only provides a variable frequency three-phase emergency power supply system for fire protection facilities with only one power source or motors in primary loads. No starting device is needed between the power source and the motor to solve the emergency power supply of the motor and the impact on the power supply equipment during the starting process. Suitable for motor loads such as elevators, central air conditioning, and fire water pumps in high-rise buildings.
