EH5500 LV Series (AC:120V 1-3KVA)

High Frequency Single Phase Online UPS

The EH5500 series is a new type high-frequency online UPS. Adopts advanced DSP digital control technology to effectively improve product performance and system reliability, and higher power density small size, light weight and high work efficiency. Effectively solve power problems such as power cut-off, Grid over voltage/low voltage, voltage instantaneous drop, amplitude reduction, high voltage pulse, surge voltage, harmonic distortion, clutter interference, frequency fluctuation and provide best power for load.

  • Description


• With double conversion online design, zero output transfer time.

• Adopt DSP digital control, excellent performance indicators, more steady and reliable.

• Adopt the technology of active power factor correction technology (PFC), the input power factor is close to 1, which greatly reduces the pollution to the mains power grid, and achieves the purpose of energy saving and reducing system investment costs.

• Output voltage 100Vac/110Vac/115Vac/120Vac/127Vac can be set

• Ultra-wide input voltage range , input voltages available 110V instead of turn to battery power.

• With LCD+LED real-time display, UPS operating available for Detection

• With self- detection function, can detect hidden faults of UPS

• Cold start by battery without grid Input.

• Input frequency range 40~70Hz, support various fuel generators

• With AC input over voltage, low voltage protection, output overload protection, short circuit protection, temperature protection, battery low voltage warning protection and battery overcharge protection.

• Output power factor 1.0 max. efficiency reach 95% , reduce loss of UPS .

• When utility cut-off, the UPS discharge battery in the battery mode; when the city power is recovery ,UPS turn on automatically,and charge battery at the same time, asunattended function.

• Standard RS232 communication outlet ,connect UPS and computer to realize multifunctional and multi-purpose monitoring and management operations, available SNMP card (optional) to UPS remote monitoring function.


Model EH55 LV 1K EH55 LV 1KS EH55 LV 2K EH55 LV 2KS EH55 LV 3K EH55 LV 3KS
Rated Capacity 1KVA/1KW 2KVA/2KW 3KVA/3KW
Input format L+N+PE
Rated input voltage 100/110/115/120/127VAC
Voltage range 55~150VAC
Frequency range 50/60±6Hz (Default), ±10Hz (Settable)
Input power factor ≥0.99
Input total harmonic distortion ≤3% linear load ≤8% nonlinear load
Output format L+N+PE
Output voltage 100/110/115/120/127VAC
Output accuracy ±1%
Output frequency For on-line mode: follow current frequency, battery mode: 50/60Hz±0.1%
Output harmonic distortion ≤2% linear load; ≤5% nonlinear load (PF=0.8)
PF 1
Overload capacity

AC Mode:

10min@102%~110% Load

1min@110%~130% Load

10s@130%~150% Load

200ms@>150% Load

Battery Mode:

10min@102%~110% Load

1min@110%~130% Load

10s@130%~150% Load

200ms@>150% Load

Switching time
Switch to battery mode 0ms
Switch to bypass 4ms
AC priority mode Support
AC Mode (Full Load) 93.5%@110VAC 95%@110VAC 94%@110VAC
Battery Mode for without built-in battery (Full Load) 88.5%@36VDC 91.5%@72VDC 91.5%@96VDC
Battery Mode for with built-in battery (Full Load) 89.5%@24VDC 92.5%@48VDC 92.5%@72VDC
Battery type Lead Acid Battery
Battery number 7Ah*2/7Ah*3 3 7Ah*4/7Ah*6 6 7Ah*6/7Ah*8 8
Chaging current Built-in battery 1K-3K: 1A (Default) 1-2A (Adjustable) Without built-in battery 1KS-3KS: 5A (Default) 1-12A (Adjustable)
Charging mode Two-stage/three-stage charging
LCD 2×8PIN/Pitch2.54mm, support 128-bit segment code, up to 4 buttons + 4 LEDs, can display operating mode / load / input / output, etc.
RS-232 Support: Windwos 2000/2003/XP/Vista/2008/7/Linux/Unix and MAC
USB Windows Famlly & MAC
Intelligent slot(Optional) SNMP/AS400 Relay Card/RS485
EPO (Optional) Support
Environmental parameters
Operating ambient temperature 0~40℃
Operating environment humidity 20%~95% (no condensation)
Storage temperature -15~60℃ (batteries: 0~40℃ )
Altitude The elevation should not exceed 1000m, 1000m or above, up to 4000 m, reference IEC62040
Noise ≤45db
Mechanical Specifications
Dimensions (D*W*H) (mm) 395*143*222 455*190*330 455*190*330
Net Weight (kg) 9.5 5.5 19/23 5.5 27/31 10