Section 3: Installation And Enabling Instructions; Installing Snaprs Devices - Generac Power Systems SnapRS RS801 Installation Manual

Section 3: Installation and Enabling Instructions

Installing SnapRS Devices

NOTE: Before installing SnapRS devices, consult the
Generac PV Link Installation Manual for information on
installing and grounding the PV Link.
When installing SnapRS devices consider the following:
•
Each PV Link can control a series-connected string
of two to nine standard PV modules of 60–420
VDC.
•
One (1) SnapRS device must be installed to the
negative (-) lead of each PV module in the array.
•
PV modules require Staubli (Multi-Contact) MC4
connectors. Brands other than Staubli (Multi-
Contact) MC4 connectors are not recommended.
•
See Figure 3-1. PV modules are installed in series
with SnapRS devices connected inline between
each module.
•
See Figure 3-2. High-voltage modules can be
configured in parallel strings. See the Generac PV
Link Installation Manual for details.
A
Figure 3-1. Single-String PV Array with Generac SnapRS™ Devices
NOTE: Figure 3-2. If dual strings are connected in paral-
lel, each string must have the same number of the same
A
Figure 3-2. Parallel-Input PV Array with Generac SnapRS™ Devices
Installation Manual for SnapRS
B
C
E
D
C
D
F
E C
B
C
D
D
To install SnapRS devices:
1. See Figure
to the negative (-) whip of each PV module (D).
2. Connect the modules in series with the SnapRS
devices installed inline between modules by con-
necting the positive lead of each module to the
SnapRS device already installed on the negative
lead of the next PV module in the series.
3. Connect the PV string positive lead to PV Link (B)
at the location marked PV Substring Input + (F).
See the Generac PV Link Installation Manual for
more information.
4. Connect the PV string negative lead with its con-
nected SnapRS device to PV Link (B) at the loca-
tion marked PV Substring Input - (E). See the
Generac PV Link Installation Manual for more
information.
5. Secure the SnapRS devices to the racking or mod-
ule frame using zip ties or similar fasteners
D
D
D
C
C
D D
D
type of PV modules, and there must be one SnapRS
device for each module in each array.
C
C
C
D D
D
D
C C
C
Installation and Enabling Instructions
3-1. Connect one SnapRS device (C)
A Generac PWRcell Inverter
B Generac PV Link
C SnapRS Device
D PV module
C
E PV Substring Input -
F PV Substring Input +
A Generac PWRcell Inverter
B Generac PV Link
C SnapRS Device
D
D PV Module
E MC4 Y Splitter
D
C
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