ABB ESI-S, Инструкции по установке, эксплуатации и обслуживанию

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Manual Energy Storage Inverter ESI-S  Introduction 7
required. The curve that is followed by the ESI is shown below. A complete description is
given in
Chapter 9 .
Voltage
Time
Time delay 1
Time delay 2
Voltage
level 1
Voltage
level 2
Nominal
voltage
Figure 2 LVRT description
1.6
Description of the use of the DC/DC converter embedded in the
ESI-S single phase
The ESI-S single phase is provided with a DC/DC converter. This converter allows to have
a wider range of battery voltage. The DC/DC converter has a current rating of 120A. The
power rating of the AC/DC converter is defined by the current rating and the network
voltage. This means that the power rating of the converter is changing with the battery
voltage. Therefore using very low voltage battery will reduce the power rating of the
complete inverter as shown on the figure below (example for a 48kW ESI-S single phase).
Figure 3: derating curves of ESI-S 120A (48kW at 400V)
1.7 Contents
− Chapter 1 : Introduction to this manual
− Chapter 2 : Safety instructions
− Chapter 3 : Upon reception
− Chapter 4 : Hardware description
0
10
20
30
40
50
60
0 100 200 300 400 500 600
Po
w
er
ra
tin
g
(k
VA
)o
fE
SI
-S
Battery voltage (V)
Derating curves of ESI-S 120A (48kW at 400V) at several network voltages
400V 415V