[RE-wrenches] fronius IG Plus practical engineering WAA???

[Phil Undercuffler]

Previous message

<snip>

This confirmed my understanding that the limiting factor on the 30A switch

in a photovoltaic applications is not 30A * 0.8.  The limiting factor is 18A

per pole or 11.5A Isc per pole.

<unsnip>



To clarify – the 18A per pole / 11.5A Isc per pole only applies if you are
using the limited listing for PV applications, with one string or subarray
per pole.  If you wire the HU361RB disconnect with two poles connected in
series, then you may run the switch at 100% of its rating.



Therefore, you can stuff up to 24 amps Isc (24 * 1.25 = 30) through a single
disconnect if the poles are wired in series, or you can run 3 subarrays each
with no more than 11.5A per pole if wired in parallel.



Sometimes it’s good to have options.







Phil Undercuffler

Director, Battery-based and Off-grid

Distribution Sales Group

Conergy

Our World Is Full of Energy

1730 Camino Carlos Rey Suite 103

Santa Fe, NM  87507

p.undercuffler at conergy.us

Direct | 505.216.3841

Toll Free | 888.396.6611 x4841

Fax | 505.473.3830

www.conergy.us
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