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General Requirements
EV5.5.12 The AIRs and the main fuse, see EV3.2.7, must be separated with an electrically insulated and fire retardant material, see T1.2.1, from the rest of the TS accumulator. Air is not considered to be a suitable insulation material in this case.
EV5.6.4 The fuse protecting the accumulator TS circuit must have a rating lower than the maximum switch-off current of the AIRs.
All overcurrent protection devices must be rated for the highest voltage in the systems they
protect. All devices used must be rated for DC.
EV3.2.5 All overcurrent protection devices which are part of the TS must not rely on programmable logic. The overcurrent protection function of unmodified commercially available motor controllers/inverters for the motor outputs may rely on programmable logic.
EV3.2.6 The overcurrent protection must be designed for the expected surrounding temperature range but at least for 0 °C to 85 °C
SRR
SRR
Definitions/Meaning
The TS power fuses are the fuses that protects the TS HV network from overcurrent damage.
According to the FSG rulebook:
EV5.4.2 Every TSAC must contain at least one fuse and at least two AIRs, see EV5.6 and EV3.2.7.
EV3.2.7 The TS high current path through the accumulator(s) must be fused.
When choosing fuses for the TS the fuses should be rated for the TS max voltage and nominal current.
· An important requirement of the TS is that the discharge circuit should not be fused.
Last year 2022
In the 2022 vehicle our team used one power fuse for the TS which was located on the HV output of the last accumulator segment.
The model that was used was a BOURNS PF-FB2 175A.
Link to datasheet: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.mouser.com/datasheet/2/54/Bourns_6_10_2022_PF_F_Datasheet-2952336.pdf
PDR
PDR
CDR
CDR
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