[FSE] Formula North - ESF Feedback

[Nicholas Burgwin]

Hello,

Please find below the feedback regarding the ESF submitted to Formula
North. If you need any further details, please do not hesitate to ask.

Thank you and looking forward to hearing back.
Nick.

Section Rule Comment
GENERAL Your ESF is rejected. Please provide a revision within 14 days
2.5.2 Double 20 AWG for current capacity does not sound like a safe plan
,   are there fuses?       check   connector spec , maybe it cannot take
18awg...
2.7.1 FIgure 18: Please provide beter resolution of schematics . I do not
see where is the Light input and our our activate when >60V or AIR
activated.
2.8.2. EV4.4.6 NOTE : TMSP resistivity is 15K , is this a problem ? EV4.4.6
specs 10k for 300V system
2.10 use 300V+ rated resistors . 160V rated resistors in serie will work
but is definitively not a good Eng. practice. All resistors should handle
300V . If 1 resistor fails close , the other one will not be able to handle
the voltage.   Paralelle resistor is Good if 1 fails open.( most likely)
2.11.13 EV4.7.1 Please provide beter rending of the HVD. HVD should not
require tool to open ;  is there an additionnal key or addition on the HVD
connector?
3.1.10 Is charger compatible with single phase charging?
3.1.10 --> charger spec :
http://www.powerfactor.co.uk/power-supplies/laboratory-power-supplies/high-power-high-efficiency-ps-8000-series/ea-ps-8000-3u/ea-ps-81000-30-3u
3.1.10 --> 2 phase / 3 phases : so NO :) it would be important to remin the
team that there will be no 3phase at the event
3.1.10 -->AND the 2 phase is 340V ..  Team need to come with the gas
generator ( or something!) to supply appropriate Vinput
3.1.10 ev8.3.6 Please show picture of your emergency stop button
4.2 EV4.9 Please detail the HV connections( cable /routing/connections) of
the energy box to the Accumulator ( HV)
6.1 EV2.1.2 Please provide detailed rendings that clearly show the motor
casing
6.1.3  Provide rending of rear motors
6.2 EV2.1.2 Please provide detailed rendings that clearly show the motor
casing
7.1 ev2.3.10-11 Please clarify if you use the SPI output or the PWM output.
AS the PWM output is filtered (RC of figure 46) it can be concider as a
ratiometric sensor , for PWM output , please detail operating duty cycle
range ( eg 10% to 85%) 0 /100% should trigger  a fault
8.1 EV4.1.7 STEVAL-ISA132V1 is a PFC converter ( AC/DC) not DCDC ... How do
you get it to work properly? please provide visual proof for
spacing/clearance requirement for rule EV4.1.7
8.1.1 EV4.1.7 section 8.1.1 is missing and would provide important
information for compliance to EV4.1.7 , please provide.
Figure 6 How do you supply 24V from DCDC at startup? is DCDC connected in
front or AIR ? Please supply detail connection of DCDC to supply GLV.Figure
6 does not provide enough details
8.2 no section 8.2  : is there some information missing?
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