Call for tenders' details
Status
Submission date
02/09/2015
Answer date
03/09/2015
Language
Status
Answered
Question details
Subject
Annex 1 Lot 1 and 2 Key technical requirement B6
Question
Is the efficiency understood as the ratio between the energy consumed and the energy given during a work cycle or instantly? In the first case [work cycle]: is the aim to be evaluated in AC (system efficiency) or DC (battery efficiency)? In the second case [instantly]: how can it be evaluated?
Answer
03/09/2015
Efficiency relates to the instantaneous power of the converter (excluding battery). In B6 efficiency is interpreted in the context of both battery charging and battery discharging modes. Efficiency should be > 90% (from 25% to 100% of rated power of the converter). The efficiency curve (at power factor=1) could be also provided in the offer.