Interesting Watch

[Deleted member 7171]

 

[Alb]

I was expecting a Rolex review at the very least

On a serious note, I think were are just seeing various organisations manoeuvring themselves to be the goto provider of essential EV information (at a cost of course). For some strange reason, EV voltage is consistently stated to be High Voltage (HV) when it isn't. Most professional electrical engineers like myself will be well aware it's actually classified as Low Voltage but this doesn't give the same scare factor.

 

[Deleted member 7171]

I guess they are using "high voltage" to differentiate between 12v (low voltage) of ancillaries and 400v(ish) traction supply? That's how I, as a layman, understands it.

 

[Harry]

I guess they are using "high voltage" to differentiate between 12v (low voltage) of ancillaries and 400v(ish) traction supply? That's how I, as a layman, understands it.

High voltage is anything over 60 v. DC is more lethal than AC. Early electrical power in the UK was 100 v DC and absolutely lethal - far more so than 240v AC. DC electrolyses your cells, and you cannot let go. AC tends to throw you off with a shock, and no electrolysis.

 

[Deleted member 6627]

DC electrolyses your cells, and you cannot let go. AC tends to throw you off with a shock, and no electrolysis.

Nice, at least I can tell the difference when I next touch the wrong cable!

 

[Dave]

High voltage is anything over 60 v. DC is more lethal than AC. Early electrical power in the UK was 100 v DC and absolutely lethal - far more so than 240v AC. DC electrolyses your cells, and you cannot let go. AC tends to throw you off with a shock, and no electrolysis.

Yep, 50V DC will overcome the natural resistance in your skin and will stop your heart.

 

[Alb]

Thresholds are defined in IEC 60038.
LV doesn't infer safety.

 

[Deleted member 7316]

Just referring to voltage in terms of safety is only half the story, the battery is also a potentially massive current source.

I like most people in electronics have probably handled the innocuous "penny" cell for years without any issue. Leave one somewhere inappropriate for a child to swallow and you have the possibility of massive, life changing tissue damage!

 

[biffo]

I'd like to bet that 99.99% of the people buying and driving these (perhaps not now, but soon as adoption grows) have no knowledge or interest in any of these standards or naming convensions - or even how an EV works, just like they don't care about the combustion cycle of an ICE car.

On the plus side, Dr Euan McTurk probably knows more than enough about batteries that the rest of us needn't worry too much

 

[tonyleonard]

Simple answer is no