48 PCS100 UPS-I User Manual
6.2 Battery Energy Storage
Battery Energy Storage consists of one or more 240 kW battery strings. A 240 kW string consists of 56 valve-
regulated lead-acid (VRLA) batteries connected in series to a voltage of 780 VDC. Multiple strings are connected
in parallel for increased kW or autonomy (ride through) time. The autonomy time is typically 30 seconds at rated
kVA and 0.8 PF. A single Battery Energy Storage enclosure contains 1 battery string.
DANGER – Stored Charge
Stored charge is present after the device is switched off. When the PCS100 UPS-I is powered
down lethal voltages (+/- 375 Vdc) will remain in the energy storage element and the
complete PCS100 UPS-I should be considered live.
DANGER – Potential Material Hazard of Batteries and Ultracapacitors
Under normal operation batteries and Ultracapacitors do not pose a risk to safety, however
incorrect operating or handing, or physical damage could result in hazardous conditions. See
the links and QR codes in this User Manual to the appropriate Material Safety Data Sheets.
BATTERY ENERGY STORAGE FEATURES:
– Valve-regulated lead-acid (VRLA) batteries
– Single string maximum rating 240 kW for 30
seconds when the batteries are new.
– 56 batteries are connected in series to form
a 780 VDC string (+/- 390VDC)
– 1 string per enclosure, individually protected
– Design Life: 10 years @ 25º C
– Cycle life: >800
– Very high discharge capability
– Safe and compact matching
– Low maintenance
– Small footprint
Battery
DC Circuit
Breaker
Figure 6-7: Battery Energy Storage Enclosure
NOTE: For safety information about the Battery modules please see the Manufacturers Material Safety Data
Sheets.
Cut and paste this link into an Internet browser or scan the QR code.
http://search.abb.com/library/Download.aspx?DocumentID=2UCD807006&Languag
eCode=en&DocumentPartId=&Action=Launch
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