EV.6.4 Connections

EV.6.4.1 All Tractive System connections must:

a. Be designed to use intentional current paths through conductors designed for electrical current

b. Not rely on steel bolts to be the primary conductor

c. Not include compressible material such as plastic in the stack-up

"What does c mean????

ANSWER:

You can’t have plastic components in bolted conductor stack ups. For example you cant have plastic in between the batteries, busbars and the bolts that hold them together."

EV.6.4.2 If external, uninsulated heat sinks are used, they must be properly grounded to the GLV System Ground, see EV.6.7

"Was our heatsink to the motor controller grounded to the chassis???

Bolts in high current paths need to have a positive locking feature. Like safety wire or the folding lock plates. This is what the plate with the hexagon cutout does on the accumulator segments."

EV.6.4.3 Bolted electrical connections in the high current path of the Tractive System must include a positive locking feature to prevent unintentional loosening

Lock washers or thread locking compounds (Loctite®) or adhesives are not acceptable.

Bolts with nylon patches are allowed for blind connections into OEM components.

"It is not possible to verify that loctite was used or that it has set with out remoing the faster. So that is why it is not used as a critical fastener.

The motor controller bolts are in fact nylon patch bolts. I had them shipped to the hotel before competition. "

Did you use nylon patch bolts on the motor controller????

EV.6.4.4 Information about the electrical connections supporting the high current path must be available at Electrical Technical Inspection

Bring documentaion and data sheets about connections to motor controller and motor. Find Gustavo's Bus bar math. Not Sure how comprehensive this needs to be. What defines high current???

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