[RE-wrenches] Fault Current

Karl Jaeger kjaeger at lightwavesolar.com
Thu Mar 27 11:51:19 PDT 2014


Dave,
We are about as rural as we can get here.... farm land. Very good document, nonetheless.
Karl

From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Dave Click
Sent: Thursday, March 27, 2014 1:29 PM
To: re-wrenches at lists.re-wrenches.org
Subject: Re: [RE-wrenches] Fault Current

Karl, you're interconnecting into a spot/area network, right? It's a real concern; some solutions and background on the issue here:
http://www.nrel.gov/docs/fy09osti/45061.pdf

DKC
On 2014/3/27, 14:05, Karl Jaeger wrote:
Esteemed Wrenches,
We've recently run into an issue with a local distributor citing network fault current on a split-phase service as a reason to prevent interconnection of our customer's solar array. They've given us the options of reducing our system size from 36.5kW-DC to 15kW-DC, or having the customer upgrade to 3-phase at a soft price of $20-30K. We're looking at 32kW of inverters on a 167kVA transformer.

Does anyone have experience on circumventing the issue of network fault current? Any experience with Fault Current Limiters?

Much appreciated,

Karl Jaeger
Design/Build Engineer
LightWave Solar Electric LLC





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