SMA E-Panel installation manual
48 |
P a g e
1 0 - 2 3 4 - 1 R E V : A
MNE250SMA-3PH Master
Master E-Panel in a 3 phase system. Two slaves are
also required for 3 phase.
The 3 phase master includes the 3 phase input/output
bypass system. This E-Panel can be used in conjunction
with a Sunny Island inverter as part of a 3 phase off-
grid, battery backup or AC Coupled system. Terminals
are provided for hookup to leg 2 and leg 3 E-Panels.
Comes with a 250Amp relay trip battery disconnect
breaker and inverter cables. Pre-wired with AC input
and output wiring for leg 1 (master) inverter. (Two
slaves are also required for 3 phase.)
This E-Panel does not come with a relay board, RS485
(485USPD-NR) boards or MNSPD lightning protection.
RS485 boards are required when AC Coupling to
SunnyBoy inverters if 3 stage charging is desired. One
RS485 board goes into the master inverter and each
SunnyBoy Inverter. AC Coupling to a SunnyBoy or any
other grid-tie inverter is possible without RS485 boards.
The Sunny Island inverter will frequency shift based on battery voltage to knock the grid-tie inverter
off line. SunnyBoy inverters can switch between off-grid and grid-tie mode automatically when RS485
boards are used. To program this feature you must use either SMA service cable (USBPBS) or SMA
web box (SUNNYWEBBOXU).
Recommended Options:
MN-Battery Combiner - 1000A combiner for up to 4 inverters. (Highly recommended)
MNSPD-300 - Surge protection for each leg of 3 phase.
MNESMA Short BP - Short back plate for mounting one Sunny Island and one SMA E-Panel.
Classic Charge controller wiring for off-grid or battery backup grid tie installations. To add Classic
charge controller wiring, add the bold text to end of part number.
CL150-1X, CL150-2X, CL200-250-1X, CL200-250-2X.
Includes all wiring, input and output breakers, mounting plates and hardware. Installed and pre-wired.
NOTE: Classic charge controllers are sold separately.
MNBE-8D2x2 Battery Enclosure - Holds four 8D size batteries. Stack-able, aluminum indoor/outdoor
MNBE-D Battery Enclosure - Holds eight Concorde 3050T AGM batteries. Steel indoor enclosure.
MNXFLEX4/0-W60" - 60 inch 4/0 Black UL Listed Cobra X-Flex battery cable with tin plated lugs and glue
filled White heat shrink.
MNXFLEX4/0-R60" - 60 inch 4/0 Black UL Listed Cobra X-Flex battery cable with tin plated lugs and glue
filled Red heat shrink.
Description: Box Size 25"L x 23"W x 14"D
Weight 40 Lbs.
