Yes, did certainly register before I made that post.
I have every confidence that Indra will manage quality of supply, installation, maintenance and possibly operation over the period of a TRIAL.
Not the same as mass market IMHO.
Any views from Indra themselves on what would be required long term?
Just conscious that at 400V (800V for some cars on the way) we have crossed over some basic physiological safety barriers. Certainly with Public DC charging, we expect that a level of maintenance is carried out by competent persons.
Sorry. Missed this thread.
So safety for DC at home (with the Indra V2G)...
-We are using the very mature CHAdeMO standard.
-High quality certified cables and connectors.
-No voltage in the cable until all checks are complete.
-Cable locked into position while charging.
-Insulation and isolation check of the cable during every charging initiation.
-Constant checking for DC leakage while in operation.
-Higher dielectric rating than AC chargers.
-Constant checking of circuit resistance while in operation.
-Dual galvanic isolation in the power electronics - we go from ac-dc-ac-dc when charging and dc-ac-dc-ac while discharging (cars generally have a single isolation barrier). This means there is no meaningful current path from DC to chassis ground or Earth. The only way you could get electrocuted by the charger is to somehow touch HV+ and HV- while the CHAdeMO protocol is satisfied everything is OK, even then the resistance check above kicks in.
-Much more monitoring within the charging point (which includes the power stage) which is web connected and monitored allowing us to see issues and trends.
- Charger itself can isolate the DC and or AC supply in/out of the charger if it senses a fault.
-Logging available do help learning should something go wrong.
-Insulation, Fire retardant, impact and mechanical shock rating of the enclosure hugely exceed regs.
-Emergency stop button just in case.
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FWIW, i think we'll see DC charging become the norm (at home/on route/autonomous hub) with on board chargers reduced to granny lead spec to keep cost down.
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