Liebert ESU
Liebert ESU (Energy Storage Unit)
Features:
Micro processor based design
Bi-directional Solar Inverter with MPPT charge
controller
High Efficiency & Reliability
20 years design life. Tropicalised design
Hybrid inverter Operation with Wind / DG
Inbuilt LCD display
Sophisticated local & remote monitoring system
(Optional)
Built in output isolation transformer
Compliance to International test standards
Micro processor / DSP based MPPT Design
High efficiency & Reliability
20 years design life. Tropicalised design
Inbuilt LCD display
Sophisticated local & remote monitoring system
(Optional)
Built in output isolation transformer
Compliance to International test standards
Liebert ESU is single / three phase output, bi-directional inverter system. ESU operates in parallel with the grid utility. Solar Photovoltaic panels convert solar energy into electrical energy as DC power. This DC power is used to charge the batteries through a charge controller and also used for the load through inverter. Additional energy is exported to the grid.
Liebert EEU is single / three phase output inverter, with Grid interactive feature. Solar Photovoltaic panels converts solar energy into electrical energy as DC power. This DC power becomes input for the EEU inverter. The inverter converts it into conventional AC power, and with its state of the art Grid synchronization design, this AC power is fed to the supply grid.
Specifications: Liebert ESU: 1-10 kW, 1 Phase
Parameters |
SPECIFICATIONS |
Parameters |
1wk | 2wk | 3wk | 4wk | 5wk | 6wk | 10wk |
inverter model | Liebert ESU: 010 -bidirectional true sine wave |
input array input | 40V to 88VDC | 80V to 176VDC | 100-220VDC |
max .open circuit voltage | 88VDC |
176VDC | 220VDC |
mppt voltage range | 44V to 79VDC | 88V to 158VDC | 110V 198VDC |
charger controller | MPPT |
bettery |
Voltage | 48VDC | 96VDC | 120VDC |
max .grid charging current | 18A | 35A | 52A | 35A | 44A | 52A | 74A |
type | SMF/lead acid wet cel |
output |
power capacity | 1kw | 2kw | 3kw | 4kw | 5kw | 6kw | 10kw |
load power factor | 0.8lag to unity |
voltage/frequency | 230vac,single phase ,50 HZ(+/-0.5%)stand alone mode |
regulation | +/-2% |
voltage distortion | <3%at linear load | <2%at linear load |
grid traking voltage/frequency | 230V,single phase(+/-10%).50Hz(+/-3Hz) |
over load | 125% for 4 minutes and 150% for 1minute | 125% for 10 minutes and 150% for 1minute |
peak efficiency (1) | 85% | 87% | 87% | 89% | 90% | 90% | 91% |
operating modes | 1.Stand alone 2.grid interactive 3.off line |
environmental | |
Operating temperature | 0 to 400 C |
storage temperature | -10to +550C |
relative humidity | Upto 95%RH non condensing |
acousitics noise | <55 dB | <62dB |
altitude | <1000meter above sea level |
mechanical | |
IP | IP 20 |
cooling | forced cool |
dimension WxDxH | 225x650x600 | 250x650x700 | 400x800x1000 |
weight in kg.(approx.) | 50 | 55 | 60 | 77 | 83 | 90 | 240 |
LCD display | Inbuilt |