pclifton
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Re: GE Wattstation Dead on Day 2 of use.

Sun Jul 15, 2012 1:30 pm

Situation normal with the Web stirring up a bunch of mass hysteria and FUD (fear uncertainty and doubt)...

Common sense here please: Folks installing charging stations should be including a hard-wired high grade surge suppressor when the units are put in place. Reality check: With a charging station and car combination you are directly connecting over $30,000 worth of electrical equipment to the grid. How many folks have surge protection on their computers and TVs?

I have used a GE Wattstation to charge my Nissan Leaf every day (sometimes three times a day) for the last six months. In fact, that is the only charger that has been used with the car, except for its first charge at the Nissan dealership.

As others have mentioned in other posts on this forum, there have been plenty of other diode failures on other chargers, but the common thread seems to be electrical interruptions, breakers being opened / popped, etc. A few months back here in the Nissan Leaf forums folks commented back to me on this that a surge protector is not going to save you in a direct lightining strike. Well folks, we are not talking about direct strikes here, the idea is to protect against surges...

If you have an EVSE, you really should have surge protection as close to the charger as possible – it is just simple common sense.

One other commenter here mentioned the state of charge percent and the Wattstation. The state of charge is controlled by the Nissan Leaf, not the EVSE. The EVSE/charger just connects the car to the power source – it only connects or disconnects when the Leaf says to.

Disclaimer: I don't work for GE and don't own GE stock. I do live in a small town with a GE plant that makes circuit breaker panels that is likely being closed next year according to the local paper.

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chris1howell
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Re: GE Wattstation Dead on Day 2 of use.

Sun Jul 15, 2012 5:14 pm

pclifton wrote:Situation normal with the Web stirring up a bunch of mass hysteria and FUD (fear uncertainty and doubt)...

Common sense here please: Folks installing charging stations should be including a hard-wired high grade surge suppressor when the units are put in place.
This issue does nit seem like FUD, overblown maybe but GE has released a statement and there seems to be many credible reports.

Surge suppression will likely not help this issue at all and most commercial EVSEs have surge suppression built.in. so an external device is not needed. The diode that is blown is on the pilot line which is not part of the high voltage path. The diode would normally see voltages from -12 to +12v. The J1772 spec reccomends EVSEs to include a Transient voltage suppression TVS on the pilot. This should help protect the pilot diode from surges caused by capacitance in the cable/EVSE/EV during connection. My guess is the wattstation either does not have the TVS diode on the pilot orto does not have a large enough TVS diode.

For those following OpenEVSE... The Open EVSE hardware design has a 600W bi directional TVS diode very close to the pilot output.
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Nubo
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Re: GE Wattstation Dead on Day 2 of use.

Sun Jul 15, 2012 7:03 pm

av8r wrote:...the circuit breaker tripped when I plugged in the GE Wattstation J1772 'ray-gun' plug into the vehicle....

...I had my electrician look at the GE Wattstation and he found two 40 amp fuses blown in the GE unit...

That's some serious current.
I noticed you're still working with polymers.

javan
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Re: GE Wattstation Dead on Day 2 of use.

Sun Jul 15, 2012 10:28 pm

I really don't know what to think or do about this. I had a GE WattStation (plug not hardwired type) installed just this past week at my house. It seems to be working fine with my Leaf. I feel confused by the fact that it works well for many people (and has for awhile) and yet it seems that other folks have problems almost immediately. I plan to keep using the WattStation until I hear definitely that there is an incompatibility problem with the Leaf or until something happens to my Leaf.
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linkim
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Re: GE Wattstation Dead on Day 2 of use.

Mon Jul 16, 2012 6:39 am

Just saw this clip this morning at http://www.autonews.com/article/2012071 ... 69822/1439" onclick="window.open(this.href);return false;.

Not much detail but "Is there a problem with the GE charging dock?" Can it be worse than the Blink?

Near the midle of the clip is a short piece on the GE device.
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davewill
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Re: GE Wattstation Dead on Day 2 of use.

Mon Jul 16, 2012 9:37 am

pclifton wrote:Situation normal with the Web stirring up a bunch of mass hysteria and FUD (fear uncertainty and doubt)...

Common sense here please: Folks installing charging stations should be including a hard-wired high grade surge suppressor when the units are put in place. ...
Bull. We've had 4 or 5 separate reports on here of people who have used their new Wattstation a few times and ended up having to have the charger in their car replaced. BTW, your comment about a surge suppressor sounds more like FUD than the reports where people's cars have needed major repair.
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padamson1
Posts: 308
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Leaf Number: 9240
Location: Portland, OR

GE WattStation Alert/Warning!

Mon Jul 16, 2012 4:24 pm

Apparently there is a serious issue with the GE WattStation EVSE when used with a LEAF...

http://www.plugincars.com/nissan-dealer ... 23121.html

[edit]also HybridCars.com has a similar report
http://www.hybridcars.com/news/ge-watts ... 48410.html
Last edited by padamson1 on Mon Jul 16, 2012 4:38 pm, edited 1 time in total.

travisty
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Re: GE WattStation Alert/Warning!

Mon Jul 16, 2012 4:28 pm

It's not just GE WattStation, it's any charger that actually follows the J1772 standard.

I've been using the GE WattStation for 6 months now, though, and have had no issues.
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davewill
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Re: GE WattStation Alert/Warning!

Mon Jul 16, 2012 4:32 pm

travisty wrote:It's not just GE WattStation, it's any charger that actually follows the J1772 standard.

I've been using the GE WattStation for 6 months now, though, and have had no issues.
No, it seems to be specifically the WattStation. Just read the reports here on MNL.
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smkettner
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Re: GE WattStation Alert/Warning!

Mon Jul 16, 2012 5:35 pm

The initial info was actually gathered from this thread started last February:

http://www.mynissanleaf.com/viewtopic.php?f=26&t=7996
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