Understanding the Composition and Selection of EPS Emergency Power Supply Equipment

EPS emergency power supply equipment is an emergency power supply that complies with specific requirements. It features manual mode, automatic switching, and a mandatory start button for technicians to operate. It can still work normally even when overloaded by more than 110%. For lithium battery packs, it supports segmented protection and intelligent charging. With a long emergency duration, EPS emergency power supply equipment is functional, safe, and reliable.

I. Composition of EPS Emergency Power Supply System

The EPS emergency power supply system consists of a rectifier charger, battery pack, inverter, lithium battery pack, control system, switching devices, input/output components, and more. The rectifier converts alternating current (AC) to direct current (DC), providing power for the battery and inverter modules. The inverter, in turn, converts DC back to AC to supply stable and uninterrupted power to load equipment. Switching devices ensure the transfer of loads between the power distribution line and the inverter output. The control system monitors the entire system in real-time, can issue alarm signals, and can also connect to computers via communication ports to enable microcomputer-based real-time monitoring of the EPS emergency power supply equipment.

II. Operating Status of EPS Emergency Power Supply Equipment

EPS emergency power supply is an emergency power device that allows short-term power interruptions. When the power distribution line supplies power normally, the EPS power supply equipment supplies power to loads through an AC bypass, with its emergency power supply in a “sleeping emergency state,” classifying it as a standby emergency power supply. When a power failure or outage occurs in the distribution line, the EPS emergency power supply will start operating formally.

III. Correct Selection of EPS Emergency Power Supply Equipment

Selecting the power of the EPS emergency power supply: First, separately calculate the proportion of resistive loads and inductive loads. For motors, due to differences in the selected models and operating methods, their starting current can be as high as 5 to 12 times the rated operating current. To ensure the safe and reliable operation of both the motor and the EPS emergency power supply itself, for some motor loads, it is required that the selected EPS emergency power supply power should be approximately 6 times the motor power, ensuring the motor continues to operate when the system power supply is interrupted. For motors with larger power, the EPS emergency power supply can start the motor via frequency conversion.