Purple day inverter in the application of EPS emergency power supply industry - News - Global IC Trade Starts Here Free Join

First, EPS
EPS (Emergency Power Supply) is an emergency power supply. It can provide emergency power supply equipment for fire-fighting equipment, municipal facilities, medical care, enterprises, factories, or other equipment when the mains grid fails. Compared with the traditional standby generator set emergency power supply, EPS has obvious advantages in terms of starting speed, noise and vibration, maintainability, power supply quality, overload capability, self-protection characteristics and environmental pollution.
EPS is divided into three general types according to the type of load: lighting type, power type and lighting power mixing type. The corresponding loads are lighting load, motor load (fire pump, etc.) and lighting and motor mixed load.
Second, the application of the inverter in the EPS power supply industry requires that when the mains supply is not normal, the EPS is driven by the internal inverter output AC drive, and the inverter plays the role of the inverter in the EPS. Therefore, the inverter must meet various requirements of EPS to ensure the same power quality as the mains.
EPS supplies power to the inverter through the battery pack, so the auxiliary power supply of the inverter must be DC power supply, and the auxiliary power supply of the AC input cannot meet the needs of EPS. The same principle, the cooling fan of the inverter can not use the AC fan, and the soft contactor of the inverter cannot use the AC contactor.
Since EPS is an emergency power supply device instead of the mains, the output voltage quality of the EPS is also an important indicator, including the harmonic content of the EPS output voltage, the load regulation of the EPS output voltage, and the stability of the EPS output voltage. In this way, when the load changes or the battery pack voltage changes within a certain range, the inverter output voltage change is as small as possible, and the harmonic content of the output voltage is sufficiently small.
In very important occasions, the EPS needs to have a strong start function. That is, when the battery pack is low, the battery pack supplies the inverter with the power supply voltage lower than the input undervoltage point of the inverter, but the inverter still needs normal operation and has a certain voltage. Current output capability, it is not allowed to report undervoltage faults.
Third, the characteristics of the purple special EPS inverter In the market, the EPS power supply special inverter is almost blank, and the price of several brands is very expensive. To this end, Ziri Electric Technology Co., Ltd., based on the characteristics of the EPS power supply industry, has developed a new generation of cost-effective EPS special inverter (ZVF9V-E series) with more than 10 years of R&D and production experience of the inverter industry. It can meet the various needs of EPS power supply and effectively improve the performance of EPS power system.
Zuri ZVF9V-E series inverter has the following features:
1. ZVF9V-E series inverter can directly supply DC power, no need to add other power-on lines. The auxiliary power supply, cooling fan and soft power contactor of the inverter do not need separate AC power supply.
2. ZVF9V-E series inverters are available in DC 500V and DC 300V. The power ranges are 1.5KW~315KW and 0.75KW~110KW respectively.
3, ZVF9V-E series inverter through high carrier frequency PWM output, after EPS filter reactance and capacitance can output near sinusoidal voltage waveform, voltage harmonic content is small. In addition, the inverter has its own voltage regulation function, which can automatically adjust the output voltage to ensure that the output voltage of the EPS remains unchanged when the battery pack voltage changes within a certain range (for example, when the load changes or the battery pack is low).
4. The undervoltage point of ZVF9V-E series inverter can be adjusted between DC 360-480V, and the overvoltage point can be adjusted between DC 660-760V to meet different customer requirements.