Fire emergency power supply manufacturers tell you the advantages and working principle of fire emergency power system

2019-05-15 09:24:55 View:866

Fire emergency power supply should be seen by everyone, then what are the advantages of fire emergency power supply? Let's tell you about Dongjun.

How the fire emergency power system works:

The fire emergency power supply adopts the single inverter technology, which integrates the charger, the battery, the inverter and the controller. The battery test and the branch test circuit are designed inside the system, and the backup operation mode is adopted.

1. When the mains is normal, the mains supply power to the important load through the mutual input device, and at the same time, the mains detection and battery charging management, and then the battery pack provides DC energy to the inverter. Here, the charger is a It is only necessary to provide the battery pack with a low-power DC power source equivalent to a charging current of 10% of the battery pack capacity (Ah), which does not have the capability of directly supplying DC power to the inverter.

2. When the mains supply is interrupted or the mains voltage exceeds the limit (±15% or ±20% of the rated input voltage), the mutual input device will immediately switch to the inverter supply, and the DC energy support provided by the battery pack. At this time, the power used by the user load is the AC power converted by the EPS inverter, not from the mains.

3. When the mains voltage returns to normal operation, the EPS control center sends a signal to the inverter to perform an automatic shutdown operation, and also performs a switching operation from the inverter power supply to the AC bypass power supply through its transfer switch. Thereafter, The EPS supplies the mains to the load via the AC bypass power supply path, and also charges the battery pack through the charger.

Advantages of fire emergency power system:

1. When the power grid is powered, it is static and no noise; when power is supplied, the noise is less than 60dB. No need to smoke and shockproof, it has the characteristics of energy saving, no pollution, no fire hazard;

2. Automatic switching can realize unattended operation, and the switching time between grid power supply and EPS power supply is 0.1~0.25s;

3. With strong carrying capacity, EPS is suitable for inductive capacitive and comprehensive load equipment, such as elevators, pumps, fan office automation equipment, emergency lighting, etc.;

4. Reliable use. The life of the host is more than 20 years;

5. Adapt to harsh environments. It can be placed in the basement or power distribution room, or it can be placed in close proximity to the emergency load site to reduce the power supply line.


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