Functional tests
A ) Use the ITK to check if the RSD is working as desired. When the RSD is
engaged (turned to OFF position) , all the relays except the MID will be
open. Only the MID relay will be closed. Hence effectively isolating the
home from the PV, battery and generator.
B ) In order to check if the RSD is functioning as required, open the ITK
and manoeuvre to the Enpower page.
C ) Turn the RSD rotary handle to OFF position.
D ) In the ITK’s Enpower page, click on “View Live details”.
E ) In the view live details page, the relay status should be as shown in
Figure 6 below. The MID relay should be closed and all other relays
should be in open position.
F ) When RSD handle is shifted to ON position, the Enpower goes back
into functioning normally as it was.
6
Figure 6: ITK checking of Relay status
Instructions for initiating Rapid Shut down and
Enpower System shut down
Rapid shut down of the system can be initiated by turning the handle
of the RSD to the OFF position. With this one step the entire Enphase
system (PV arrays , Encharge battery, Generators connected to
Enpower) is shut down and the regulatory requirement for rapid shut
down are also met.
NOTE:
For more details of the RSD switch options and wiring instruc-
tions, please refer to Enpower R2 QIG or the Ensemble R2 design guide
8
Complete the installation by affixing the labels
A ) In order to identify the Rapid shut down switch the following label (in
Figure 7) needs to be pasted at a distance of not more than 3ft (1m)
from the RSD, as mandated by the NEC code.
7
Figure 7: Label for identifying the RSD
Figure 8: Sticker for showing portions of PV array which will be shut down using RSD
I/O - 1
(24V, 1A)
I/O - 2
(24V, 1A)
Gen - I/O
(24V, 1A)
NO1 NO2
NC1 NC2
NO3
RSD
NC3 NC4
AC Combiner
PV/Storage
Generator
B ) In order to earmark the parts of the array which will be shut down
by using the RSD the following sticker (Figure 8) needs to be pasted
in the location specified by the Authority having jurisdiction or at a
distance of not more than 3ft (1m) from from the RSD, as mandated
by the NEC code.
Dry Contact Terminals
RSD Terminals to
be connected
NC3
Terminal 1
Terminal 1
Terminal 2
Terminal 2
NC4
Terminal 1
Terminal 3
Terminal 2
Terminal 4
Figure 5: Connecting wires from RSD and Enpower
MID
EC1 L1
EC1 L2
NFT L1
NFT N
Closed
Open
Open
Open
Open
Cable Header
Assembly
(refer Fig 2a)
12 AWG
wires