High Voltage DC Safety Requirements
High Voltage DC Safety Requirements
(OP)
Greetings All,
I am working with a large company that is tasked with doing long term testing of electric vehicle propulsion systems. They are trying to find out what the safety requirements are for working with High Voltage DC. This is an area I'm not familiar with and was hoping someone here could point me in the right direction.
Thank you,
Dave
I am working with a large company that is tasked with doing long term testing of electric vehicle propulsion systems. They are trying to find out what the safety requirements are for working with High Voltage DC. This is an area I'm not familiar with and was hoping someone here could point me in the right direction.
Thank you,
Dave






RE: High Voltage DC Safety Requirements
RE: High Voltage DC Safety Requirements
I asked the client for more information and will post it as soon as they get back to me.
Cheers,
Dave
RE: High Voltage DC Safety Requirements
Location: Winston Salem NC
Voltages: 600 VDC at currents over 2000 amps and 1200 VDC at currents over 200 amps.
Laboratory testing of products. Both short duration (minute or less) and long duration (several days) testing at high power. Some testing in controlled environments (temperature, humidity, vibration, etc...).
RE: High Voltage DC Safety Requirements
This will be fairly generic, but there are now specific requirements for arc-flash protection on dc systems. Also, many of the general safety requirements apply to both ac and dc systems.
There may be some additional references in NFPA 70E that lead you to additional standards and guides.
RE: High Voltage DC Safety Requirements
Cheers,
Dave
RE: High Voltage DC Safety Requirements
RE: High Voltage DC Safety Requirements
RE: High Voltage DC Safety Requirements
The article was quite interesting. I'm pleased that analysis methods are being developed so that very high energy DC systems can be assessed in a reasonably scientific manner. I'm not sure how the analysis deals with large inductive energy stores (such as rotor field windings) where the source voltage is variable, but I guess the incident energy is relatively low because the inductor behaves as a current source and the fault current doesn't rise during the fault. It would be useful to understand how well the analysis can deal with active sources such as controlled rectifiers when an arcing fault occurs on the DC side. The majority of very high energy DC systems are likely to be rectifier-based rather than battery sources, and the simple model proposed in Equation 1 probably isn't going to be sufficiently accurate for these sources.
Thanks for the link.
RE: High Voltage DC Safety Requirements
Thank you for your valuable feedback.