SMA-E-Panel
SMA E-Panel installation manual
Dual Master shown
Model MNE250SMA
The MidNite Solar SMA E-Panel is designed for single & multiple inverter installations.
Use this installation manual to aid in installation. The installation of electrical systems such as this fall
under the guidelines of the NEC in the USA. Canadian electrical codes have jurisdiction in Canada.
These instructions are not intended to be used in lieu of these local and federal codes, but rather are
used as specific to this product. You may need to consult with a professional solar installer or electrical
inspector when in doubt on code specific questions and system installation issues. Even though the EPanel incorporates and simplifies numerous separate electrical circuits into one enclosure, an inverter
system such as this is still a very sophisticated and somewhat complicated electrical system.
MidNite Solar Inc.
17722 – 67th Ave Ne
Arlington, Wa 98223 USA
360-403-7207 Voice
360-691-6862 Fax
www.midnitesolar.com
SMA E-Panel installation manual
This Manual contains information for MidNite Solar SMA E-Panel Model Numbers:
Masters:
MNE250SMA-AC SINGLE
MNE250SMA-OG SINGLE
MNE250SMA-OG/AC DM
MNE250SMA-QUAD MASTER
MNE250SMA-3PH MASTER
Single Single – Off Grid
Master – Dual Off Grid
Master – Quad System AC Coupled / Off Grid
Master - 3 Phase
Slaves:
MNE250SMA-Slave
Slave (right hand unit) for dual, 3PH and Quads
Backplates – Autoformer
MNESMA tall BP
MNESMA short BP
MNX-240
Back plate for AC coupled Master holds inv, E-Panel and autoformer
Short back plate for inverter and E-Panel
6000 watt autoformer for single inverter AC coupled system
Symbols used in this manual:
Caution: Indicates a condition where injury or damage may occur if instructions are not followed.
Danger: Indicates a condition where injury or death may occur if instructions are not followed.
Symboles utilisez dans ce manuel:
Attention: Indique un risque des blessures graves ou du dommage si on ne suit pas des instructions
dans ce manuel.
Danger: Indique un risque des blessures graves ou du mort si on ne suit pas des instructions dans ce
manuel.
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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS - These instructions contain important safety and operating
instructions for the MidNite SMA E-Panel.
If you do not fully understand any of the concepts, terminology, or hazards outlined in these instructions, please refer installation to a
qualified dealer, electrician or installer. These instructions are not meant to be a complete explanation of a renewable energy system.
GENERAL PRECAUTIONS
If service or repair should become necessary, contact MidNite Solar Inc. Improper servicing may result in a risk of shock, fire or
explosion. To reduce these risks, disconnect all wiring before attempting any maintenance or cleaning. Turning off the inverter will
not reduce these risks. Solar modules produce power when exposed to light. When it is not possible to disconnect the power coming
from the Photovoltaics by an external means such as a combiner, cover the modules with an opaque material before servicing any
connected equipment.
Do not work alone. Someone should be in the range of your voice or close enough to come to your aid when you work with or near
Batteries.
Remove rings, bracelets, necklaces, watches etc. when working with photovoltaic modules or other electrical equipment. Power from
an illuminated photovoltaic array makes a very effective arc welder with dire consequences if one of the welded pieces is on your
person.
All installations must comply with national and local electrical codes. Professional installation is recommended.
Wiring must be done in accordance with the National Electrical Code ANSI/NFPA 70. Use Class 1 wiring methods
for field wiring connections to terminals of a Class 2 circuit. Use only 14-1/0 gauge AWM wire. Select the wire
gauge used based on the protection provided by the circuit breakers/fuses.
MidNite products are not intended for use in connection with Life Support Systems. MidNite Solar makes no
warranty or representation in connection with their products for such uses.
Disclaimer
Every effort is made to ensure the completeness and accuracy of all technical reference material, still,
unless specifically agreed to in writing, MidNite Solar Inc.
(a) Makes no warranty as to the accuracy, sufficiency or suitability of any technical or other information
provided in its manuals or other documentation.
(b) Assumes no responsibility or liability for loss or damage whether direct, indirect, consequential or
incidental, which might arise out of use of such information. The use of any such information will be
entirely at the user's risk.
If service or repair of the E-Panel should become necessary, contact MidNite Solar Inc. For other parts of
the system refer to the manual included with that equipment and contact the manufacturer for support.
Improper servicing may result in a risk of shock, fire or explosion. To reduce these risks, disconnect all
wiring before attempting any maintenance or cleaning. Turning off the inverter will not reduce these risks.
Solar modules produce power when exposed to light. When it is not possible to disconnect the power
coming from the Photovoltaics by an external means such as a combiner, cover the modules with an
opaque material before servicing any connected equipment.
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INSTRUCTIONS DE SECURITÉ IMPORTANTES
CONSERVER CES INSTRUCTIONS
Ces instructions contiennent des informations importantes pour utiliser le Midnite Solar SMA MNX240 Autotransformer en toute sécurité.
1. Avant l’utilisez cet appareil lis et comprends toutes les instructions et avertissements.
2. Si vous ne comprenez pas l’une des concepts ou des instructions contenu dans cette manuel
consulter un agent spécialisé.
3. Si des réparations sont nécessaires contactez MidNite Solar pour plus des informations. Danger
de choc électrique et de risque de brulure. Rien à dépanner à l'intérieure du cette appareil. Ne
pas ouvrir le couver. Pour toute réparation ou service d'entretien, consulter un agent spécialisé.
Il y’a peut-être plusieurs sources d’alimentation dans cette system. Débrancher toutes les
interrupteurs avant toute d'entretien où nettoyage.
4. Ne travaillez pas seul. Quelqu'un devrait toujours être à proximité pour aider en cas d'une
situation d'urgence.
5. Retirer bagues, bracelets, colliers, montres, et quelles choses comme ça. Il y’a risque des
blessures graves s’il y’a un court-circuit. Cela pourrait ruiner votre journée entière.
6. Le câblage doit être fait en conformité avec le National Electrical Code ANSI / NFPA 70.
Utiliser des méthodes de câblage de catégorie 1 pour les connexions de câblage sur .des
terminaux d'un circuit de classe 2. Utilisez uniquement des fils de AWM de calibre 14-1/0.
Sélectionnez le type de câble utilisé sur la base de la protection prévue par les disjoncteurs /
fusibles.
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Table of Contents
Model Number Descriptions................................................................................................................... 2
Warning Symbols .................................................................................................................................... 2
Warnings ................................................................................................................................................3,4
Component locator ...................................................................................................................................7
Mounting System to the wall ...................................................................................................................8
Dimensional drawings ............................................................................................................................13
Wiring ......................................................................................................................................................15
Installing Conduit between E-Panels ....................................................................................................16
AC Coupled Systems description ..........................................................................................................19
Wiring Diagrams ....................................................................................................................................20
Quad Master ........................................................................................................................13, 23 , 24, 47
Single............................................................................................................................................19, 22, 44
AC Coupled Dual....................................................................................................................... 19, 27, 46
Off Grid Single............................................................................................................................20, 21, 44
Off Grid Dual ....................................................................................................................................25, 26
Three Phase .......................................................................................................................................28, 29
Tightening torque for electrical connections .................................................................................30, 43
Classic Charge Controller with arc fault detection .............................................................................31
Charge Controller hookup ....................................................................................................................32
DCGFP Ground Fault............................................................................................................................34
Battery Combiner ...................................................................................................................................35
Whiz Bang Jr. .........................................................................................................................................36
MNX240 AutoFormer ............................................................................................................................36
MNBE8D2x2 Battery enclosure. ...........................................................................................................39
MNBDM Battery Disconnect Module ..................................................................................................40
MNBirdHouse Remote Shutoff. ............................................................................................................41
New NEC Requirements ........................................................................................................................42
Appendix. ................................................................................................................................................43
E-Panel descriptions. ..............................................................................................................................44
Slave unit .................................................................................................................................................49
Exchanging bus bars. .............................................................................................................................50
Warranty. ................................................................................................................................................52
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All E-Panels:
4
1
9
2
1
9-565-1
9-314-1
6-032-1
6-010-2
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1" Grommets
2" Grommet
1/4-20 Bolts 4 to mount the e-panel, 5 extra to mount the inverter
2 M6 Screws and other hardware for mounting inverter to backplate
Manual
Dual System:
8
2
18
4
2
4
4
4
4
1
9-565-1
1" Grommets
9-314-1
2" Grommet
6-032-1
1/4-20 Bolts 4 to mount the e-panel, 5 extra to mount the inverter
6-010-2
2 M6 Screws and other hardware for mounting inverter to backplate
9-489-1
10.5" Conduit
9-490-1
Conduit terminal adaptors
9-235-1
Conduit lock nuts
9-236-1
Conduit bushings
Additional connecting wires
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Manual
Slave Unit:
4
1
9
2
4
4
2
4
9-565-1
9-314-1
6-032-1
6-010-2
5-015-1
5-015-6
5-097-1
6-037-1
1" Grommets
2" Grommet
1/4-20 Bolts 4 to mount the e-panel, 5 extra to mount the inverter
2 M6 Screws and other hardware for mounting inverter to backplate
Insulator, Black
Insulator, Blue
Insulator cover Black
Taptite screws
Units shipped with Classic:
1
3
1
1
1
3-013-1
6-029-1
6-058-1
6-001-1
9-237-1
Classic mounting bracket
Bracket mounting screw
Classic mounting screw
Classic mounting spacer
Conduit Nipple
Units shipped with 2 Classics:
2
6
2
2
2
3-013-1
6-029-1
6-058-1
6-001-1
9-237-1
Classic mounting bracket
Bracket mounting screw
Classic mounting screw
Classic mounting spacer
Conduit Nipple
3 Phase and quad Units:
2
3
2
3
Conduit sets for 3 phase
Conduit sets for quads
Required connecting wire sets for 3 phase
Required connecting wire sets for quads
Units shipped with a Battery Combiner:
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DC Negative
DC Disconnect
Breaker – Relay
trippable
500Amp/50mv
Shunt
Dinrail for
additional breakers
AC or DC
Bypass Breakers
Battery Plus Bus
Charge Controller
breakers*
Charge Controller
breakers*
PV
Positive and negative
input connections
MNSMARB
Relay board
AC Neutral busbar
AC Output
under charge
controller breakers
Ground Busbar
AC Input
*If not used for the Classic these breaker
locations are available for extra load breakers.
E-Panel Component location
Not all components installed on all models.
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Mounting the SMA E-Panel to the wall:
This section describes the general instructions for installing components to the wall or other mounting surface. When
you have completed this section then refer to the appropriate section for your model for specific instructions on
wiring and wiring diagrams.
Pre-Wired systems start on Page 13.
Note: The SMA E-Panel system should only be installed with the backplate. Failure to use the backplate can result in
poor alignment of system components resulting in a less reliable and non-code compliant installation.
Tools Required:
Long #2 Phillips Screwdriver
Medium slotted Screwdriver
Torque Screwdriver for electrical connections
9/16” Wrench
Large Allen wrench for inverter DC connections
Drill for pilot holes if required
Be sure to comply with all local and national code requirements including National Electrical Code, ANSI/NFPA 70.
Use Class 1 wiring methods for field wiring connections to terminals of a Class 2 circuit. Select the wire gauge used
based on the protection provided by the circuit breakers/fuses.
The SMA E-Panel is a type 1 enclosure suitable for installation in an indoor location protected from rain / snow etc.
When installing the system make sure to observe NEC maximum height requirements.
The system when complete will be quite heavy. Ensure that the wall can handle the weight of the system
and use appropriate fasteners. Have help when positioning and mounting system components to the wall.
Mise en garde! Cet appareil est assez lourd. S’assurer que le mur peut supporter le système. C’est nécessaire
d’avoir assistance pour installer le système.
High voltage is present throughout the system. Disconnect all sources of power and exercise extreme
caution when working with, on or around this equipment.
Attention: Il y a haute tension partout. Débrancher toutes les sources d’alimentation et faire attention autour
de le système. Lire aussi le manuel de l’inverter pour plus des informations.
Install the backplate either MNESMA tall BP or MNESMA short BP to the selected surface using a minimum of four
5/16 lag bolts with a minimum length of 2”.
The inverter should be installed before the E-Panel. Use ¼-20 bolts to attach the inverter mounting bracket, E-Panel
and MNX240 (if so equipped) to the backplate. The MNX240 requires the tall backplate.
Left: MNSMA Short BP Backplate
Typical backplate installation, shown mounted on wall with the inverter
mounting bracket installed (inverter mounting bracket supplied with
inverter).
CAUTION: The inverter is extremely heavy. Use extreme
caution when lifting the inverter. Refer to the inverter manual for
safe and proper inverter installation instructions. Make sure the
wall or other mounting surface can support the weight.
Encore, cet appareil est tellement lourd, sauvegarder vous-même.
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Mounting the SMA E-Panel to the wall cont.:
Install the inverter mounting bracket before
mounting the backplate to the wall. Use ¼20 bolts and flat washers. Pressed in nuts
are provided on the backplate.
Ensure that the inverter bracket is centered
and is resting on the mounting screws
(down on the screws and not slid up).
Mounting on back of inverter
The inverter rests on the tab of the
inverter mounting bracket.
Backplate mounted to wall
Caution!!
The inverter is very heavy. Have
strong persons assist you.
Attention!!
L’inverter est très lourd. Avez des
gens très forts vous assister.
Inverter mounting bracket
mounted to backplate
Secure inverter to bracket with the
M6x10 screws provided.
Left and right sides.
Cover with fan grills provided.
The grills are marked left and
right.
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Mounting the SMA E-Panel to the wall cont.:
These two mounting locations are not used
Inverter lower mounting screw locations.
The inverter is spaced away from
the back plate at the four lower
mounting screws.
Inverter lower mounting screws installed
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Mounting the SMA E-Panel to the wall cont.:
Slider
Remove the deadfront
(metal front cover) by
removing the screws in the
four corners and the two
on the DC disconnect
breaker.
When reinstalling the
deadfront ensure that the
breaker handles are
protruding through the
slider as shown.
E-Panel mounting holes
E-Panel mounting holes.
Place the E-Panel below the inverter and line up the E-Panel mounting holes with the holes in the backplate.
Attach the E-Panel to the backplate with ¼-20 bolts. Pressed in nuts are provided on the backplate.
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Hinge Pin
Cover mounting bracket on E-Panel
Plastic cover installation:
To install the cover line up both molded in hinge pins
with the cover mounting brackets and slide down into
position.
Hinge pin installed into mounting bracket
Attaching the Autoformer – Required for AC coupling of a single Sunny Island inverter.
The tall backplate is required when using the MNX240 AutoFormer.
The optional 6000 Watt Autoformer for single inverter AC Coupled systems mounts above the inverter.
Position the MNX240 Autoformer above the inverter and line up the mounting holes. Install with ¼-20
hardware.
Shutoff / Circuit Breakers
Hookup terminal blocks
Hot
Neutral
MNX240 Autotransformer
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Mounting the SMA E-Panel to the wall continued:
2/0 Battery cable lengths necessary to complete
installation as shown above:
Above: Quad system with Battery Combiner.
Studs are shown for reference and are at 16” centers.
If mounting on plywood use ¾” material.
Use a minimum of eight 1/4” screws per backplate.
E-Panel
#1
#2
#3
#4
Positive
71”
45”
30”
60”
Negative
71”
41”
44”
75”
Pre-Wired Systems: Systems are available pre-assembled / pre-wired. It is not necessary to disassemble
systems to mount them on the wall. One way to install a pre-Wired system is to find where the bottom of the
backplate will be when installed and securely screw a 2x4 to the wall with the top just at where the backplate
will be. Place the bottom of the backplate on the 2x4 and have two people tip it up into place and secure the
backplate to the wall with a minimum of 8 ¼” screws at least 2” long.
Front
Top
Left Side knockout location
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Front
Top
Right Side knockout location
Bottom knockout location
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System wiring
The SMA E-Panel is a complex system and should be wired by a qualified electrician.
Danger: Hazardous voltages are present throughout the system. All power must be removed
before attempting any wiring or maintenance of the system.
Danger: Il y a haute tension partout dans le système entière. Débrancher toutes les sources
d’alimentation avant faisant des connections ou l’entretien.
The following pages contain wiring diagrams for many configurations. Follow the appropriate one for
your installation such as on or off grid, AC Coupled or three phase. The diagrams below also cover
single, dual and quad systems with up to 7 Classic Charge Controllers. Components sold separately.
If you are unsure of any aspect of the installation contact a licensed electrician or MidNite Solar at
360.403.7207.
DC Wiring:
If using the optional Battery Combiner run 4/0 wire from the battery breaker to the positive connection
in the Battery Combiner and 4/0 wire from the E-Panel shunt. It is acceptable to use black wire if the
ends are clearly marked red or white as appropriate. Use copper wire of adequate gauge (Determined by
breaker size) rated for a minimum of 75°C. Always use approved conduit and fittings.
Use 4/0 wire for a 250 Amp battery breaker and 2/0 for a 175 Amp battery breaker.
Negative connections to inverters
Positive connections to inverters
Negative shunt connection
To batteries
Positive connections to batteries
For installations not using the Battery Combiner connect a positive wire from the E-Panel breaker to the
battery bank positive and a negative wire from the E-Panel shunt. These wires should be kept as short as
possible. Running the wires close together will reduce ripple currents.
AC Wiring:
This varies greatly depending on your system configuration. The following wiring diagrams show on and off
grid, with and without a generator, AC coupled and three phase systems. Please pay special attention to the
information on AC coupled systems. Use appropriate conduit and fittings for a safe, reliable, code compliant
system.
Slave units are shipped with red mounting blocks and covers for AC in and AC out installed. Black and blue
mounting blocks and covers are included. Should you desire to change the mounting blocks and covers to
match the desired wire color (L1 Black, L2 Red and L3 Blue) Simply pull the cover off, press the retaining
tab on the mounting block to release the terminal block and remove the terminal block. There is a Phillips
screw in each mounting block. Remove and retain the screw. Using the new color reverse the process to
reinstall. Note: Use caution when tightening the screws. The chassis can be stripped if the screws are overtightened. Should this occur the use a slightly longer #10 screw and a #10 nut from behind.
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INSTALLING CONDUIT BETWEEN E-PANELS:
Conduit and fitting parts
Bushing Nut
Fitting
Conduit
With one inverter installed, remove the top
and bottom knockouts (see image next page)
that face the other E-Panel and push one of
the fittings from the outside through the
knockout opening into the E-Panel.
Fitting
Nut
Bushing
Inside the E-Panel, secure the fitting with
one of the nuts and a bushing
These instructions are for installing the supplied conduits and fittings in a system with a Battery
Combiner.
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Knockouts
Removed
Place a fitting on one side of a conduit
and insert the other end of the conduit
into one of the fittings installed in the
previous step.
Remove the facing knockouts on the
second inverter. Move the second E-Panel
into place. Secure the E-Panel to the wall
then, secure the conduits with a nut and
bushing.
Make sure to use the bushing. It is there
to protect the wiring.
Conduit installed and ready for wiring
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Installing conduit between Inverters continued.
Typical wire routing between E-Panels.
Refer to the appropriate wiring diagram for your system.
In the example above L2OUT goes from the transfer breakers on the master to the L2OUT busbar on the
slave unit, L2IN goes from the L2IN busbar on the master unit to the L2IN busbar on the Slave unit, all
in the lower conduit. The ground can be in either conduit as is convenient. The inverter communication
cable is routed through the upper conduit.
*Ground wire may be routed through either conduit.
Power and communication wiring should be kept separate.
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Master
unit
Slave
unit
Inverter wiring and wiring between E-Panels complete. Ready for AC/DC in and out connections.
AC Coupled Systems.
AC coupling allows a grid-tie system to also provide backup power during an outage. Grid tied systems are
required to stop sending power to the grid immediately upon a power failure. This is for the safety of the
linespersons effecting repairs as well as others who may encounter downed lines. Most inverters shut down
completely at this point leaving you in the dark while your array or turbine are producing unused power.
In an AC Coupled system when the power fails the inverter is disconnected from the grid but continues to
supply power to the critical loads panel. The array or turbine continue to send their power to the batteries
for charging or running loads. The SMA Inverter used in this system is particularly adept at this form of
coupling giving you the best of both worlds of grid-tie and power backup.
Generator hookup to a standalone system vs. an AC coupled system.





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Off Grid the generator goes to the AC input on the inverter.
Utility connected non grid tie system the generator and inverter go to a switch (Not included) so that the
inverter is fed by the grid or the generator. This may be automatically or manually switched depending on
the system.
Off Grid the generator goes to the AC input on the inverter.
Utility connected non grid tie system the generator and inverter go to a switch (Not included) so that the
inverter is fed by the grid or the generator. This may be automatically or manually switched depending on
the system.
AC coupled grid tied single system the generator then goes through the normally open contacts of a relay
(sold separately) and then to the inverter.
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SMA SUNNY ISLAND OFF GRID SYSTEM
WITH SINGLE CLASSIC CHARGE CONTROLLER
DRAWN BY T.
CARPENTER
2/05/13
GROUND
BATTERY
NEGATIVE
-
OFF
OFF
OFF
OFF
OFF
SUNNY
ISLAND
OFF
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
OFF
ON
+
HOT IN
NEUTRAL
GROUND
HOT OUT
NEUTRAL
GROUND
LOADS
120 V
BATTERY
POSITIVE
NORMAL
ON
OFF
ON
ON
60
60
OFF
OFF OFF
60
A
60
A
ON ON
ON
90 70
PV INPUT AND
CLASSIC OUTPUT
BREAKERS
LOCATED ON SIDE
OF E-PANEL
NEUTRAL
OFF
L1 IN
OFF
L1 OUT
ON
OFF
60
ON ON
AC INPUT
60
AC OUTPUT
250
ON
BYPASS
PV PLUS BUS
BATTERY
PLUS BUS
GENERATOR
POWER SOURCE
SPD
300
CLASSIC 150
PV ARRAY
SPD
300
BATTERY 48 V
NOTE: GROUND CONNNECTIONS
TO EXTERNAL PANELS HAVE BEEN
OMITTED FOR CLARITY
THESE MUST OF COURSE BE
INSTALLED IN THE FIELD
6V
400ah
6V
400ah
6V
400ah
6V
6V
400ah
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
Typical complete off grid system with one MNE250SMA-OG and one Classic charge controller.
Parts sold separately.
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SMA SUNNY ISLAND OFF GRID HYBRID
BATTERY / GENERATOR OR GRID CONNECTED UPS SYSTEM
GROUND
-
SUNNY
ISLAND
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
60
OFF
ON
ON
ON
OFF
OFF
60
60
ON ON
OFF OFF
60
A
60
A
OFF
L1 IN
L1 OUT
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
60
OFF
ON
AC INPUT
OFF
250
ON
BYPASS
AC OUTPUT
ON
ON
ON
OFF
ON
ON
OFF
ON
BATTERY
NEGATIVE
NORMAL
OFF
ON
GROUND
+
HOT IN
NEUTRAL
GROUND
HOT OUT
NEUTRAL
LOADS
120VAC
BATTERY
POSITIVE
NEUTRAL
GRID OR
GENERATOR
POWER SOURCE
SPD
300
BATTERY 48 V
NOTE: GROUND
CONNECTIONS TO EXTERNAL
PANELS HAVE BEEN
OMITTED FOR CLARITY
THESE MUST OF COURSE BE
INSTALLED IN THE FIELD
6V
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
6V
6V
400ah
400ah
6V
400ah
DRAWN BY T.
CARPENTER
2/07/13
Typical UPS system. MNE250SMA-AC. Works with grid or generator.
Parts sold separately.
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Typical complete single system. Parts sold separately.
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SMA QUAD STACK WITH BATTERY
COMBINER / DISTRIBUTION BOX
DC WIRING
DRAWN BY T.
CARPENTER
1/3/12
GROUND
125 125
A
A
OFF OFF
OFF
ON
ON
L1 IN
OFF
L1
L1
OUT
L1
IN
NEUTRAL
L2
OUT
L2
IN
L2
OUT
NEUTRAL
L2
IN
ON ON
OFF OFF
60 60
A A
AC INPUT
L2 IN
175
ON
INVERTER
4
-
AC OUTPUT
ON ON
OFF OFF
60 60
A A
BATTERY BATTERY
POSITIVE NEGATIVE
+
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
L1 OUT
GROUND
AC INPUT
175
ON
INVERTER
3
-
AC OUTPUT
NEUTRAL
L2 OUT
BATTERY BATTERY
POSITIVE NEGATIVE
+
HOT IN
ON ON
OFF OFF
60 60
A A
AC INPUT
OFF
-
GROUND
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
+
175
ON
OFF OFF
60 60
A A
INVERTER
2
BATTERY BATTERY
POSITIVE NEGATIVE
AC OUTPUT
OFF
125 125
A
A
ON ON
AC INPUT
OFF OFF
AC OUTPUT
ON
-
GROUND
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
HOT OUT
NEUTRAL
HOT IN
NEUTRAL
GROUND
GROUND
+
175
ON
ON
INVERTER
1
BATTERY BATTERY
POSITIVE NEGATIVE
NEUTRAL
L2
BATTERY NEGATIVE
BATTERY POSITIVE
Typical complete quad stack system. MNE250SMA-QUAD-MSTR and MNE250SMA-SLAVEs
DC wiring shown here. Parts sold separately.
23 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA QUAD STACK WITH BATTERY COMBINER
DISTRIBUTION BOX AC WIRING
DRAWN BY T.
CARPENTER
11/30/12
GROUND
GROUND
175
ON
OFF
OFF
125 125
A
A
OFF OFF
ON
ON
L2 IN
L2
L1
OUT
L2
OUT
L1
IN
L2
OUT
L2
IN
INVERTER
4
-
ON ON
OFF OFF
60 60
A A
AC INPUT
L1
+
AC OUTPUT
L1 IN
BATTERY BATTERY
POSITIVE NEGATIVE
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
ON ON
OFF OFF
60 60
A A
AC INPUT
175
ON
INVERTER
3
-
AC OUTPUT
ON ON
OFF OFF
60 60
A A
BATTERY BATTERY
POSITIVE NEGATIVE
+
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
OFF
-
GROUND
AC INPUT
OFF
+
175
ON
OFF OFF
60 60
A A
INVERTER
2
BATTERY BATTERY
POSITIVE NEGATIVE
AC OUTPUT
125 125
A
A
ON ON
AC INPUT
OFF OFF
AC OUTPUT
ON
-
GROUND
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
HOT OUT
NEUTRAL
HOT IN
NEUTRAL
GROUND
GROUND
+
175
ON
ON
INVERTER
1
BATTERY BATTERY
POSITIVE NEGATIVE
L2
IN
L1
OUT
NEUTRAL
L2 OUT
NEUTRAL
NEUTRAL
NEUTRAL
SPD
300
SPD
300
BATTERY NEGATIVE
BATTERY POSITIVE
120/240V
“THE GRID”
CRITICAL LOADS
SUBPANEL
NOTE: EXTERNAL COMPONENT GROUNDS AND
NEUTRALS HAVE BEEN OMITTED FOR CLARITY.
TAKE IT ON FAITH THAT THEY ARE ALL PROPERLY
CONNECTED
Typical complete quad stack system. MNE250SMA-QUAD-MSTR and MNE250SMA-SLAVEs
AC wiring shown here. Parts sold separately.
24 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA DUAL SUNNY ISLAND OFF GRID HYBRID
BATTERY / GENERATOR OR GRID CONNECTED UPS SYSTEM
DRAWN BY T.
CARPENTER
1/31/13
GROUND
BATTERY
POSITIVE
+
BATTERY
NEGATIVE
INVERTER 2
SLAVE
SUNNY
ISLAND
-
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
60
60
OFF
ON ON
OFF OFF
60
A
60
A
175
ON
60 60
A A
OFF
L2 OUT
L2 IN
L1 IN
L1 OUT
ON ON
OFF OFF
AC INPUT
ON
OFF
60
ON
AC OUTPUT
ON
OFF
60
ON
AC INPUT
OFF
175
ON
BYPASS
AC OUTPUT
ON
ON
ON
OFF
ON
ON
OFF
ON
GROUND
-
GROUND
HOT IN
NEUTRAL
GROUND
INVERTER 1
MASTER
SUNNY
ISLAND
NORMAL
OFF
ON
BATTERY
NEGATIVE
HOT OUT
NEUTRAL
+
HOT IN
NEUTRAL
GROUND
HOT OUT
NEUTRAL
GROUND
LOADS
120/240V
BATTERY
POSITIVE
NEUTRAL
L2 OUT
L2 IN
NEUTRAL
GRID OR
GENERATOR
POWER SOURCE
SPD
300
SPD
300
BATTERY 48 V
NOTE: GROUND AND
NEUTRAL CONNECTIONS TO
EXTERNAL PANELS HAVE
BEEN OMITTED FOR CLARITY
THESE MUST OF COURSE BE
INSTALLED IN THE FIELD
6V
400ah
6V
400ah
6V
400ah
6V
6V
400ah
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
Typical complete dual system. Parts sold separately.
25 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA DUAL SUNNY ISLAND OFF GRID SYSTEM
WITH 2 CLASSIC CONTROLLERS
DRAWN BY T.
CARPENTER
2/01/13
GROUND
BATTERY
POSITIVE
+
BATTERY
NEGATIVE
INVERTER 2
SLAVE
SUNNY
ISLAND
OFF
OFF
OFF
OFF
OFF
-
OFF
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
-
GROUND
GROUND
INVERTER 1
MASTER
SUNNY
ISLAND
HOT IN
NEUTRAL
GROUND
OFF
ON
BATTERY
NEGATIVE
HOT OUT
NEUTRAL
+
HOT IN
NEUTRAL
GROUND
HOT OUT
NEUTRAL
GROUND
LOADS
120/240V
BATTERY
POSITIVE
BATT
NEG
NORMAL
OFF
ON
ON
ON
OFF
OFF
60
60
L1 OUT
L1 IN
L2 OUT
L2 IN
OFF
OFF OFF
60
A
60
A
ON ON
OFF OFF
60 60
A A
AC INPUT
OFF
ON
250
ON
AC OUTPUT
60
ON ON
AC INPUT
60
AC OUTPUT
250
ON
BYPASS
ON ON
ON ON
90 70
90 70
PV INPUT AND
CLASSIC OUTPUT
BREAKERS LOCATED
ON SIDE OF E-PANEL
OFF
L2 OUT
L2 IN
BATTERY
PLUS BUS
NEUTRAL
NEUTRAL
CLASSIC 150
GENERATOR
POWER SOURCE
CLASSIC 150
PV PLUS
BUS (S)
SPD
300
SPD
300
SPD
300
BATTERY 48 V
NOTE: GROUND AND
NEUTRAL CONNECTIONS TO
EXTERNAL PANELS HAVE
BEEN OMITTED FOR CLARITY
THESE MUST OF COURSE BE
INSTALLED IN THE FIELD
6V
400ah
6V
400ah
6V
400ah
6V
6V
400ah
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
PV ARRAYS
Typical complete off grid system with an MNE250SMA-OG/AC DM. an MNE250SMA-SLAVE and two
Classic charge controllers. Parts sold separately.
26 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
MIDNITE SOLAR
SMA SUNNY ISLAND DUAL STACK WITH SUNNY BOY AC COUPLING
AND GENERATOR BACK UP- SMARB AUTO TRANSFER SWITCH WIRING
DRAWN BY T.
CARPENTER
05/02/13
GROUND
DIG IN
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
60
60
OFF
OFF OFF
60
A
60
A
ON ON
OFF OFF
60 60
A A
OFF
OFF
ON
ON
-
COM
SYNCH
IN
250
ON
NC
A-COM
NO
MN-SMARB
RELAY
COIL
NC
NO
NEUTRAL
SPD
300
“THE GRID”
NOTE: EXTERNAL COMPONENT
GROUNDS AND NEUTRALS
OMITTED FOR CLARITY
TAKE IT ON FAITH THAT THEY
ARE ALL PROPERLY CONNECTED
SPD
300
GENERATOR
120/240 VAC
BATTERY 48 V
6V
400ah
6V
400ah
6V
400ah
6V
6V
400a
400ah
h
6V
400ah
6V
400ah
6V
400ah
6V
400ah
Typical complete dual AC coupled system. With an MNE250SMA-OG/AC DM. an MNE250SMASLAVE and two Classic charge controllers.
Parts sold separately.
27 | P a g e
10-234-1
REV: A
AC OUT L2
L2 IN
A-NO
B-COM
AC IN L1
L2 OUT
A-NC
NO
NC
COM
B-NC
B-NO
AC IN L2
L2
IN
GT IN L2 COM
L2
OUT
GT IN L1 COM
L2 OUT
FROM
INV 2
L1 IN
NEUTRAL
L1 OUT
AC OUT L1
OFF
ON
ON
ON
OFF
OFF
ON
+
INVERTER
2
SUNNY
ISLAND
SLAVE
BATTERY
NEGATIVE
AC INPUT
ON
OFF
ON
60
ON ON
BATTERY
POSITIVE
AC OUTPUT
OFF
OFF
60
AC OUTPUT
250
ON
AC INPUT
BACKED UP LOADS
SUB PANEL
COM
SYNCH
OUT
GROUND
AC 2 GEN / GRID
NEUTRAL
-
GROUND-PE
GROUND-PE
GROUND-PE
GROUND-PE
+
INVERTER 1
SUNNY
ISLAND
MASTER
BATTERY
NEGATIVE
AC 1 LOADS / SUNNY BOYS
NEUTRAL
SUNNY BOY
AC 2 GEN / GRID
NEUTRAL
SUNNY BOY
AC 1 LOADS / SUNNY BOYS
NEUTRAL
SUNNY BOY
BATTERY
POSITIVE
SMA E-Panel installation manual
SMA 3 PHASE WITH BATTERY
COMBINER / DISTRIBUTION BOX
NO BYPASS SWITCH
DRAWN BY T.
CARPENTER
02/18/13
ON
OFF
60
A
60
A
175
ON
OFF
OFF
L1 IN
L2 IN
L1 OUT
L2 OUT
-
AC OUTPUT
ON
OFF
COMM SYNCH IN
+
COMM SYNCH OUT
BATTERY BATTERY
POSITIVE NEGATIVE
AC INPUT
60
A
GROUND
HOT IN
60
A
AC OUTPUT
175
ON
OFF OFF
-
INVERTER 3
SLAVE L3
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
+
AC INPUT
ON ON
BATTERY BATTERY
POSITIVE NEGATIVE
COMM SYNCH IN
GROUND
COMM SYNCH OUT
-
INVERTER 2
SLAVE 1 L2
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
+
175
ON
AC INPUT
AC OUTPUT
60
A
BATTERY BATTERY
POSITIVE NEGATIVE
COMM SYNCH IN
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
ON ON
OFF OFF
60
A
GROUND
COMM SYNCH OUT
INVERTER 1
MASTER L1
ON
OFF
60
A
OFF
L3
OUT
L3 IN
L3
IN
NEUTRAL
NEUTRAL
NOTE: COMMUNICATIONS CABLES SHOWN
AT TOP OF E-PANEL FOR CLARITY
L3 OUT
NEUTRAL
NEUTRAL
BATTERY POSITIVE
BATTERY NEGATIVE
MIDNITE SOLAR 1000 AMP
BATTERY COMBINER /
DISTRIBUTION BOX
Typical complete three phase system with MNE250SMA-3PH Master, Two MNE250SMA-SLAVEs and a
MidNite Battery Combiner. Parts sold separately.
28 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA 3 PHASE WITH BATTERY
COMBINER / DISTRIBUTION BOX
DC WIRING
DRAWN BY T.
CARPENTER
02/05/13
60
A
ON ON
AC INPUT
60
A
-
AC OUTPUT
175
ON
OFF OFF
COMM SYNCH IN
+
OFF
OFF OFF
60
A
60
A
ON
OFF
60
A
OFF
L2
IN
L2
OUT
BATTERY BATTERY
POSITIVE NEGATIVE
COMM SYNCH OUT
GROUND
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
COMM SYNCH IN
L2 OUT
NEUTRAL
L1 OUT
L2
ON ON
INVERTER 3
SLAVE L3
AC INPUT
L2 IN
L3 OUT
175
ON
-
AC OUTPUT
L1 IN
L3 IN
60
A
BATTERY BATTERY
POSITIVE NEGATIVE
+
ON
OFF
TRANSITION TERMINALS
FROM L2 AND L3 E-PANELS
60 60 60
A A A
OFF
AC INPUT
ON ON ON
OFF OFF OFF
60
AC OUTPUT
175
ON
60
-
GROUND
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
HOT OUT
NEUTRAL
HOT IN
NEUTRAL
GROUND
GROUND
+
INVERTER 2
SLAVE 1 L2
COMM SYNCH OUT
BATTERY BATTERY
POSITIVE NEGATIVE
COMM SYNCH OUT
GROUND
COMM SYNCH IN
INVERTER 1
MASTER L1
L3 L3
OUT IN
L3
IN
NEUTRAL
L3
OUT
NEUTRAL
NEUTRAL
L3
NOTE: COMMUNICATIONS CABLES SHOWN
AT TOP OF E-PANEL FOR CLARITY
BATTERY POSITIVE
BATTERY NEGATIVE
MIDNITE SOLAR 1000 AMP BATTERY
COMBINER / DISTRIBUTION BOX
Typical complete three phase system with MNE250SMA-3PH Master, Two MNE250SMA-SLAVEs and an
MidNite Battery Combiner. Parts sold separately.
29 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA 3 PHASE WITH BATTERY
COMBINER / DISTRIBUTION BOX
AC WIRING
DRAWN BY T.
CARPENTER
01/18/13
COMM SYNCH IN
-
60
A
60
A
ON ON
AC INPUT
175
ON
OFF OFF
OFF OFF
60
A
60
A
COMM SYNCH OUT
+
OFF
ON
OFF
60
A
OFF
L2
IN
L2
OUT
BATTERY BATTERY
POSITIVE NEGATIVE
AC OUTPUT
L2 OUT
NEUTRAL
L1 OUT
L2
GROUND
HOT IN
L3 OUT
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
L2 IN
COMM SYNCH IN
L1 IN
L3 IN
60
A
ON ON
INVERTER 3
SLAVE L3
AC INPUT
OFF
175
ON
-
AC OUTPUT
60 60 60
A A A
BATTERY BATTERY
POSITIVE NEGATIVE
+
ON
OFF
TRANSITION TERMINALS
FROM L2 AND L3 E-PANELS
60
AC INPUT
ON ON ON
OFF OFF OFF
AC OUTPUT
175
ON
60
-
GROUND
HOT IN
NEUTRAL
GROUND
GROUND
HOT OUT
NEUTRAL
HOT OUT
NEUTRAL
HOT IN
NEUTRAL
GROUND
GROUND
+
INVERTER 2
SLAVE 1 L2
COMM SYNCH OUT
BATTERY BATTERY
POSITIVE NEGATIVE
COMM SYNCH OUT
GROUND
COMM SYNCH IN
INVERTER 1
MASTER L1
L3 L3
OUT IN
L3
IN
NEUTRAL
L3
OUT
NEUTRAL
NEUTRAL
L3
NOTE: COMMUNICATIONS CABLES SHOWN
AT TOP OF E-PANEL FOR CLARITY
BATTERY POSITIVE
BATTERY NEGATIVE
MIDNITE SOLAR 1000 AMP BATTERY
COMBINER / DISTRIBUTION BOX
Typical complete three phase system with MNE250SMA-3PH Master, Two MNE250SMA-SLAVEs and an
MidNite Battery Combiner. Parts sold separately.
Torque for electrical connections on all E-Panels
Torque small busbar screws to 20-30 IN-LBS (2.3NM)
Torque large busbar screws to 45 IN-LBS (5.1 NM)
Torque Dinrail circuit breakers to 20 IN-LBS (2.3NM)
Torque battery disconnect breaker to 15 Ft-Lbs (20.4NM)
30 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
Classic Charge Controller
Classic Lite Charge Controller
Classic Charge Controller - Optional accessory
The Classic and Classic Lite MPPT Charge
Controllers helps you get the most from your
power source as well as providing ground fault
and arc fault protection.
A Quad system may have up to seven Classic
Charge Controllers.
WARNING: Shock hazard. Disconnect the batteries and input power (PV, Hydro, Wind ETC.) before
opening the Classic front cover.
Note: When two or more Classics are paralleled onto one DC Source a blocking diode must be used between each
Classic and the input source to isolate each Classic from other ones.
The Classic should be wired by a qualified professional and needs to meet all applicable electrical codes. Always
make sure all source and battery circuits are de-energized and wait 5 minutes before working on the wiring in the
Classic. The Classic has 2 common (negative) terminals. Therefore, only one negative conductor is required to run
from the E-Panel and terminate on either (or both) common negative terminal. The Positive DC source wire goes to
the PV+ Turbine+ screw. The Positive Battery DC wire goes to battery + terminal.
Torque the terminal screws to the specs below.
The Torque specs on the DC terminal connector (big blue terminal connector) are:
Up to #10 AWG torque to 25-35 inch pounds.
#8 AWG torque to 30-40 inch pounds.
#6 AWG or larger torque to 40-50 inch pounds.
Installing and Wiring the Classic Charge Controller:
The MNCCP Dual Classic Mounting Plate (Sold separately) holds two Classics and is used with MidNite E-Panels.
The MNCCP Dual ships with the MNCCCK Close Nipple Kit and three 10 x 3/8 Flathead screws.
The three screws are for attaching the MNCCCP bracket to the E-Panel. A knockout is provided that lines up with the
wire exit of the Classic.
The MNCCB-L and MNCCB-R each hold one charge controller. Specify MNCCB with an L for left and an R for
mounting to the right of the E-Panel respectively. A conduit nipple is not supplied with the single bracket. Order the
MNCCCK if the close nipple and locknuts and insulating bushing are required.
On the next page is the layout of the Classic wiring compartment.
Besides the DC in and out there may be network, USB, Aux and battery temp sensor wires. These wires should be run
in a separate conduit when possible to reduce noise on the signal lines. They may use the same knockout as the other
wires.
31 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
Regulated DC output To E-Panel
Negatives
(Common)
DC input from Solar/Wind/Hydro
Ethernet connection
USB connection
Chassis ground
Battery temperature sensor
Conduit nipple
Classic Wiring compartment
Above: Basic wiring connections to the Classic.
When selecting wire and breakers for the Classic (or any device) remember that the breakers are there
to protect the wiring, not the equipment.
Refer to Appendix C for breaker and wire sizing or the Classic Charge Controller.
When two Classics are mounted on a dual bracket, the wires of the outer Classic pass through the inner
Classic.
32 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
SMA SYSTEM
WITH 2 CLASSIC CONTROLLERS
NEUTRAL
AC 2 GEN / GRID
NEUTRAL
GROUND-PE
GROUND-PE
AC 1 LOADS / SUNNY BOYS
Negative connections from Classic go
to the negative busbar on the shunt
GROUND
BATTERY
POSITIVE
+
BATTERY
NEGATIVE
INVERTER 2
SLAVE
SUNNY
ISLAND
-
Input and output breakers
for the Classic
BATT
NEG
250
ON
ON ON
OFF OFF
60 60
A A
AC INPUT
AC OUTPUT
The Classics battery output goes to
the Battery Plus Bus for single
Classic installations. For dual
Classics it is recommended to go
straight to the battery box to reduce
the effects of ripple.
ON ON
ON ON
90 70
90 70
PV INPUT AND
CLASSIC OUTPUT
BREAKERS LOCATED
ON SIDE OF E-PANEL
OFF
L2 OUT
The Classics PV input comes
from the PV Plus Bus
L2 IN
BATTERY
PLUS BUS
NEUTRAL
CLASSIC 150
Battery box. Required output
breaker not shown.
CLASSIC 150
PV PLUS
BUS (S)
SPD
300
SPD
300
BATTERY 48 V
6V
400ah
6V
400ah
6V
400ah
6V
6V
400ah
400ah
6V
400ah
6V
400ah
6V
400ah
6V
400ah
PV ARRAYS
In from Solar Panels/Combiners
Or Wind/Hydro
Above: a slave unit with two Classics. Other wiring removed to show charge controller wiring.
Each Classic requires an input and an output breaker. Breakers are available from MidNite Solar in Dinrail
style up to 63 Amps / 150 Vdc and in panel mount up to 100 Amps / 300 Vdc.
Either type of breakers can be easily used in the E-Panel.
Below: Breaker locations for charge controllers or general use are shown. Din Rail and panel mount.
Din Rail breakers mount here
Panel mount breakers mount
here. There are four spaces
for panel mount breakers on
this side.
33 | P a g e
Panel mount breakers mount
here. There are six spaces for
panel mount breakers on the
this side.
10-234-1
REV: A
SMA E-Panel installation manual
Generic charge controller
Single DC-GFP Wiring.
The MidNite Solar Classic charge
controller has the DC-GFP plus arc
detection built in and does not require
an external DC-GFP
80 amp panel mount DC-GFP ready
for the high current wires.
63 amp din rail DC-GFP wired with a
63 amp PV disconnect and a 63 amp
controller output breaker.
The DC-GFP device monitors current flowing between battery negative and earth ground and will trip
when more than ½ amp is present. There should be no current flowing in this circuit under normal
circumstances.
In the event your DC-GFP trips, it is usually on a new installation. One of two things is happening.
1: There is an actual ground fault in the wiring, or 2: there is an excess of current flowing through the
large 63 or 80 amp breaker. Be sure to check your wiring! Refer to the wiring diagrams in these
instructions.
34 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
The wiring diagrams show a PV disconnect breaker connected directly after the PV array + busbar and
before the DC-GFP. It doesn’t matter which order these two devices are connected. The DC-GFP can
be connected to the Array plus output before the PV disconnect just as well.
Make sure that the polarity of all DC dinrail breakers is correct. MidNite Solar panel mount breakers
are not polarity sensitive. The din rail mount breakers have a + sign at the bottom terminal. The +
connection needs to be connected to the most positive point in the circuit.
The output of the PV charge controller also requires over-current protection. Most installations will use
either a 63 amp din rail mount breaker (observe polarity) or an 80 to 100 amp panel mount breaker. Use
a red 6AWG wire for the 63 amp breaker and 4AWG wire for an 80 or 100 amp breaker. The charge
controller output breaker must be sized large enough for the expected output. You can always use a
larger breaker and wire than the array output though. The breaker is there to protect the wire, not the
controller, so you can use a 63 amp breaker even if the controller is not capable of outputting more than
30 amps.
Classic Arc Fault Detector: If your system includes a Classic charge controller then Arc fault
protection is provided for the system. The Arc Fault Detector is a unique safety component built into
every Classic charge controller. Because safety is not an option, MidNite Solar responded to the 2011
NEC code requirements by adding arc fault detection as standard. The Classic is the first charge
controller in the world to successfully stop a series arc. The Classic can detect an arc in less than
100mSec. From low power arcs to devastating high power arcing, the Classic will detect and shut down
with an audible and visible alert to announce that there is a problem in the PV side of the system. A
manual reset is required after clearing the fault. Refer to the Classic charge controller manual for more
information.
Battery Combiner Optional accessory
The MN Battery Combiner combines
battery banks for use with up to 4
Classic Charge Controllers and provides
a 1000 Amp / 100 mv shunt for precise
current measurement.
35 | P a g e
10-234-1
REV: A
SMA E-Panel installation manual
Whiz Bang Jr. Optional Accessory
The Whiz Bang Jr. attaches to a 500 Amp / 50 mv shunt to send real time information to the Classic
Charge Controller.
Installation is a simple one wire connection. The Classic can use this information along with its internal
measurements to get a clearer picture of how much power is actually going into and out of the batteries.
Single wire
to Classic
Whiz Bang PCB
Shunt
Spacer
Lock Washer
Screw
Shunt before installing the Whiz Bang Jr..
Located in E-Panel. See component
locater on page 11.
Whiz Bang Jr. installation sequence
To use the Whiz Bang Jr. Simply install the Whiz Bang PCB to the shunt as shown and connect the wire
to the Classic AUX 2 input terminal block in the far left position.
MNX240 Autoformer Optional accessory.
The MNX-240 autotransformer contains two sets of windings proportioned to a 1:1 ratio. Below
depicts the winding configuration for the MNX-240 autotransformer.
 (Indicates Start of windings)
One dual 60 Amp breaker provides the input/output connection points for this unit. The images on the
following page depict the internal wiring configurations for the MNX-240 autotransformer.
Two basic configurations exist for the MNX-240.
1. 240VAC to 120VAC step-down transformer
2. 120VAC to 240VAC step-up transformer
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MNX240 Autoformer Continued:
The step-down transformer configuration will be the most common as it steps power down from the
240VAC inverter to make it accessible and useful for the 120VAC Sunny Island.
In this configuration, L1 and L2 (240VAC) power is applied to the 25Amp breakers of the MNX-240
Autotransformer. 120VAC is then available from the output to system neutral.
In the Step-Up autotransformer configuration, only L1 (120VAC) is connected to one of the 25Amp
breaker terminals and 240VAC power is available across both 25Amp breaker terminals. See Fig. 4.
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MNX240 Autoformer Continued:
Autoformer wire routing when used with the Tall Backplate.
Knockout Location
Knockout Location
The wiring from the E-Panel to the Autoformer and back is routed behind the Tall Backplate. A
knockout is provided in the E-Panel and in the AutoFormer with clearance holes in the Tall
Backplate to allow the wiring between E-Panel and AutoFormer to be out of sight and out of the
way.
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Optional accessory MNBE8D2x2 Battery Box:
Left: Two MNBE8D2X2 shown stacked
(Larry not included)
Description: NEW PRODUCT! Battery enclosure holds 4 8D batteries
Battery Enclosure with locking door and one shelf.
Outdoor 3R rain type design.
Powder coated aluminum and stainless steel construction.
Holds four 8D batteries.
Comes with 250 amp battery breaker and has spaces for up to 4 MNDC panel mount breakers (1 to
100 amps available). Ships un-assembled.
Size 36"L x 28.5"W x 26.25"D
Weight 91 Lbs
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MidNite Solar Battery Disconnect Module – MNBDM (Optional)
The Midnite Solar Battery Disconnect Module (MNBDM) is an optional circuit board which can be installed in most
MidNite Solar E-Panels. It is used in conjunction with one or more MNBH Disconnect switches and MidNite Solar
disconnecting combiners to remotely shutdown the system in emergencies. The MNBDM is controlled by the MNBH
Birdhouse Disconnect switch and disconnects the main batteries from the system in a similar manner as the
disconnecting combiner disconnects the PV array from the rest of the system. The trip signal for the MNBDMs and
combiners is generated by the MNBH Disconnect Panel. Control signals are provided to the target devices via a
ruggedized 600V CAT-5 cable, which connects all components in the system.
Power and Circuit Breaker Connections
The MNBDM is powered from the main batteries and has terminals for connection to the E-Panel remote trip circuit
breaker, other MNBDMs, the disconnecting combiners and the MNBH Disconnect Panel.
Electrical connections: First, Connect the battery negative to TB1 pin2 (-) then connect the switched battery positive
(after the battery breaker) to TB1 pin 1 (+). The MNBDM has onboard overcurrent protection but a circuit breaker
should be used to protect the wiring. The chassis ground connects to TB1 pin 3 (GND symbol).
Connect the red remote trip wire from the remote trip circuit breaker to TB2 pin 1 (+) and the black to TB2 pin 3 (-).
Leave TB2 pin 2 open (middle).
System Connections
There can be up to four MNBDMs in the system. All system components are connected together with CAT-5 cable
which plugs into the two RJ-45 (Ethernet-style) connectors, J1 and J2. There is no difference between the two
connectors. A typical BirdHouse installation consists of one MNBH Disconnect switch, one MNBDM and one
disconnecting combiner would use one of the RJ-45 jacks for connection to the MNBH switch and the other for
connection to the combiner. Connect one to the MNBH Disconnect switch, or to another MNBDM that connects to the
MNBH Disconnect switch. Connect the other to any downstream MNBDM units or combiners.
Operation
The MNBH Disconnect Panel must be energized and connected to an MNBDM before closing the battery circuit
breaker on the E-Panel. If you attempt to close the breaker without the MNBH on and the cable installed, the MNBDM
will detect a problem and trip the breaker within about 5 - 7 seconds. This is a fail-safe feature that requires the system
to be intact and working before energizing.
If the cable is properly installed the power will remain on and the system is now ready for operation. The MNBDM
LED will briefly blink (off) three times when power is first applied. This is normal and indicates that the board is
working properly. The system may be tested by pressing the button on the MNBH Disconnect Panel, but doing that will
trip every combiner and MNBDM in the system. To avoid this, a small test button is located on the front edge of the
MNBDM board. Pressing the test button only trips the one breaker in that panel. Note that there is 2 second delay after
pressing the button before the breaker trips.
TB1 Pin 1
Battery Positive
TB1 Pin 2
Battery Negative
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Trip Negative
No Connection
TB1 Pin 3 Ground
TB2 Pin 1 Breaker
Trip Positive
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MNBirdhouse Optional accessory
• Located at ground level, the Birdhouse provides a safe means to
disconnect high voltage PV arrays from MidNite Disconnecting and
Arc Fault combiners
• Hard wired connection gives positive feedback that the
Disconnect on the roof has actually been thrown. Connection is via
600/1000v Cat 5 USE-2 cable
• Up to four separate means of power including battery backup
insures that the disconnect will be tripped when the button is
pushed
• Voice and L.E.D. confirm level of safety (day or night) to the
person pushing the button
• Nema 3R UV resistant enclosure
• Able to disconnect multiple PV Disco Arcfault Combiners
• Firefighter Approved
MNBirdhouse Emergency shut-off
• 600V Cat 5 USE-2 90° cable available from Midnite Solar
System connections for the MNBDM and Birdhouse (sold separately)
SMA E-Panel
SMA E-Panel
Birdhouse
Disco Combiner
Disco Combiner
System connections for the MNBDM at the circuit board level.
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Below are some of the new requirements for NEC 2014.
In short, there is a requirement for a “Rapid Shutdown”. This is accomplished nicely with the MidNite Solar
Birdhouse, Disco Combiners and MNBDM Battery Disconnect Module (located in the E-Panel).
Where there is more than one source of power this is even more critical. Consider a system with solar panels and
battery backup. There is the high voltage of up to 600 volts from the panels and the 120/240 volts in the building
AC Supply. When the main breaker is thrown to disconnect AC, the inverter will do as intended and maintain
voltage in the building. The 600 Volts from the panels, the 120/240 VAC and battery voltage are all still present.
Thus, throwing the mains did not remove any power at all.
The MidNite Solar Birdhouse, Disco Combiners and MNBDM Battery Disconnect Module work together to
remove power from the solar panels and disconnect DC from the batteries to the inverter removing all backup
power. All with the push of a single button.
690.12 Rapid Shutdown of PV Systems on Buildings.
PV system circuits installed on or in buildings shall include a rapid shutdown function that controls specific
conductors in accordance with 690.12(A) through (D).
(A) Requirements for controlled conductors apply only to PV system conductors of more than 1.5 meters (5
feet) in length inside a building, or more than 3 meters (10 feet) from a PV array.
(B) Controlled conductors shall be limited to no more than 30 volts and 240VA within 10 seconds of rapid
shutdown initiation. Voltage and power shall be measured between any two conductors and between any
conductor and ground.
(C) The rapid shutdown initiation methods shall be labeled in accordance with 690.56(B).
(D) Equipment that performs the rapid shutdown shall be listed and identified.
The following comment is one of many resulting from a consensus process established among three groups of
stakeholders: 1) CMP4 Firefighter Safety Task Group, 2) the SEIA Codes and Standards Working Group, and 3)
the PV Industry Forum.
9. ROP 4-325 (accepted) introduces a distance of 1.5m (5 feet) to disconnection means of indoor battery-backup
wiring. This distance is recognized as an acceptably short conduit length that allows for best practices in
workmanship, and can be applied to PV wires entering a building in addition to conductors in and out of
inverters and conductors coming out of a battery.
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Appendix A
Wire size based on breaker size @75°C.
Breaker Size
AWG Wire Size
Wire Size mm2
10 Amp
15 Amp
20 Amp
30 Amp
40 Amp
50 Amp
60 Amp
70 Amp
80 Amp
90 Amp
100 Amp
125 Amp
175 Amp
250 Amp
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
8 AWG
6 AWG
4 AWG
4 AWG
2 AWG
2 AWG
1/0 AWG
2/0 AWG
4/0 AWG
1.31 mm2
2.08 mm2
3.31 mm2
5.26 mm2
8.36 mm2
8.36 mm2
13.3 mm2
21.1 mm2
21.1 mm2
33.6 mm2
33.6 mm2
53.5 mm2
67.4 mm2
107 mm2
Appendix B
Classic Breaker and wire sizing chart
Model
Classic 150
Classic 150
Classic 150
Classic 150
Classic 150
Battery
Voltage
48
48
48
48
48
MPPT
Voltage
70
90
100
110
120
In/out
Ratio
1.45
1.87
2.08
2.29
2.5
Output
Amps
86
83
80
76
76
0utput
Breaker
90-100
90-100
80-90
80-90
80-90
Wire
Gauge
4AWG
4AWG
4AWG
4AWG
4AWG
Input
Amps
59.31
44.38
38.46
33.18
30.4
Input Breaker / Wire size
80A/4AWG 150V
63A 150V
50A/8AWG - 63A/ 6AWG 150V
50A/8AWG-63A/6AWG 150V
50A/8AWG-63A/6AWG 150V
Classic 200
Classic 200
Classic 200
Classic 200
48
48
48
48
70
120
140
160
1.46
2.5
2.92
3.33
76
70
65
65
80-90
70-80
70-80
70-80
4AWG
4AWG
4AWG
4AWG
52.05
28
22.26
19.52
80A/4AWG 300V
50A/6AWG or 8AWG 300V
50A/6AWG or 8AWG 300V
30A110AWG-50A/6AWG or 8AWG300V
Classic 250
Classic 250
48
48
180
200
3.75
4.16
55
53
60-83
60-63
6-4AWG
6AWG
14.66
12.74
30A/10AWG - 50A/6AWG or 8AWG 300V
30A/10AWG-50A/6AWG or 8AWG300V
Appendix C
Torque for electrical connections on all E-Panels
Torque small busbar screws to 20-30 IN-LBS (2.3NM)
Torque large busbar screws to 45 IN-LBS (5.1 NM)
Torque Dinrail circuit breakers to 20 IN-LBS (2.3NM)
Torque battery disconnect breaker to 15 Ft-Lbs. (20.4NM)
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Appendix D E-Panel descriptions
MNE250SMA-AC-SINGLE
Master E-Panel in a single Sunny Island system.
(SunnyBoy inverter required)
The master includes the input/output bypass system
along with separate AC input and output breakers.
This E-Panel is used in conjunction with a Sunny
Island inverter as part of an AC Coupled system.
Comes with a 250 Amp battery disconnect breaker
and inverter cables. Pre-wired with AC input and
output wiring. The battery breaker is a custom relay
trip version to work with the BirdHouse that can be
remotely shut off from outside the building by fire
personnel in an emergency.
RS485 boards are required when AC Coupling to
SunnyBoy inverters if 3 stage charging is desired.
One RS485 board goes into the Sunny Island
inverter and each SunnyBoy Inverter. AC Coupling
to the SunnyBoy grid-tie inverter is possible
without RS485 boards. The Sunny Island grid-tie
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 a SMA service cable (USBPBS) or SMA web box
(SUNNYWEBBOXU).
Recommended Options:







MNSPD-300 - Surge protection for leg 2 AC IN and OUT
MNSMA Tall BP - Tall back plate for mounting one Sunny Island, one SMA E-Panel and one AutoFormer.
MNX-240 240 to 120VAC Autoformer (required to interface the 240V SunnyBoy to the 120V Sunny
Island)
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: The MNE250SMA-AC-SINGLE master includes the Manual input/output bypass system
along with separate AC input and output breakers. The Automatic Grid tie Bypass relay is installed as
well. Comes with a 250 battery disconnect breaker and inverter cables. Pre-wired with AC input and
output wiring. Box Size 25"L x 23"W x 14"D Weight 40 lbs.
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MNE250SMA-OG Single
Master E-Panel in a Single 6KW Sunny Island
inverter system. The system is for off-grid, battery
backup grid tie or battery backup.
This E-Panel includes a 60 amp AC Output/Bypass
system, separate AC input and output breakers for
the Master inverter, 250 amp relay trip battery
breaker with inverter cables, 500 amp/50mV shunt,
battery negative busbar, AC input and output
busbars, neutral and ground busbars, AC input and
output wiring. All breakers are hydraulic-magnetic
and rated for continuous duty. Space provided for 6
additional 1/2" wide din rail mount AC or DC
breakers and up to ten 3/4" wide panel mount
breakers. Knockouts located for battery cables,
lightning protection and AC conduit connections.
Recommended options:










MNESMA Short BP - Back Plate Highly recommended
MNSPD-300 - One surge protection device works for AC input and AC output
MNX-240 240 to 120VAC Autoformer (required to interface the 240V SunnyBoy to the 120V Sunny
Island)
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. Stackable, 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.
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MNE250SMA-OG/AC DM
Master E-Panel for a dual off-grid, AC Coupled or
battery backup 120/240 VAC Sunny Island
inverter system
Comes with AC output/bypass assembly and
independent AC input and output breakers,
500A/50mV shunt, neutral and AC IN and OUT
terminal busbars, 250A relay trip battery breaker
with inverter cables, AC wiring to inverter.
Recommended Options:








MNESMA Short BP (short back plate)
MNSPD-300 - Surge protection for AC In/Out
Classic Charge controller wiring For offgrid 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, CL200250-2X. 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.
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MNE250SMA-Quad Mstr
Master E-Panel for an 18-24KW quad Sunny
Island inverter system. The quad system can be
off-grid, AC coupled, battery backup grid tie
or battery backup. Three Slave E-Panels and
three additional Sunny Island inverters
required.
This master E-Panel in a quad Sunny Island
inverter system includes a 125 amp AC
Output/Bypass system, separate AC input and
output breakers for the Master inverter, 250
amp relay trip battery breaker with inverter
cables, 500 amp/50mV shunt, battery negative
busbar, AC input and Output busbars, neutral
and ground busbars, AC input and output
wiring, transition terminals to Slave E-Panels.
All breakers are hydraulic-magnetic and rated
for continuous duty. Space provided for 6
additional 1/2" wide din rail mount AC or DC
breakers and up to ten 3/4" wide panel mount
breakers. Knockouts located for battery cables, lightning protection and AC conduit connections.
Recommended options:










MNESMA Short BP - Back Plate (Highly recommended)
MN-Battery Combiner 1000A - Combiner for battery connections for 4 inverters. (Highly
recommended)
MNSPD-300 - One surge protection device for AC inputs and one for AC outputs.
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.
Classic charge controllers are sold separately.
MNBE-8D2x2 Battery Enclosure - Holds four 8D size batteries. Stackable, 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.
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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 offgrid, 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.
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MNE250SMA-SLAVE
Companion E-Panel for dual, triple and quad
Sunny Island inverter systems. The Slave EPanel is the same part number for all multiple
SMA E-Panel systems regardless of off-grid, AC
coupled, battery backup, 3 phase or quad.
This E-Panel does not include any AC
Output/Bypass system. It does include separate
AC input and output breakers for the slave
inverter, 250 amp relay trip battery breaker with
inverter cables, 500 amp/50mV shunt, battery
negative busbar, AC input and Output busbars,
neutral and ground busbars, AC input and output
wiring. Comes with Red busbars installed.
Additional black and blue insulators included for
tailoring to suit the application. See instructions
for replacing terminals blocks on page 45.All
breakers are hydraulic-magnetic and rated for
continuous duty. Space provided for 6 additional
1/2" wide din rail mount AC or DC breakers and
up to ten 3/4" wide panel mount breakers.
Mounting hole spaces for additional terminal busbars. Knockouts located for battery cables, lightning
protection and AC conduit connections.
Recommended options:









MNESMA Short BP - Back Plate (Highly recommended)
MN-Battery Combiner 1000A - Combiner for battery connections for 4 inverters. (Highly recommended
for triple or quad systems)
MNSPD-300 - Surge protection device if not already included on Master 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.
Classic charge controllers are sold separately.
MNBE-8D2x2 Battery Enclosure - Holds four 8D size batteries. Stackable, 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.
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Appendix E Exchanging Bus Bars
Slave units are shipped with red AC in and out wires as well as red bus bar mounts. It may be desired
to change to another color to identify a different phase.
MNSBB-R
Red Bus Bar and mounts
Bus Bar mounting
block locating hole
Emboss for Bus Bar mounting
Additional long or short bus bars
may be installed in unused
mounting points
Common mounting for short
and long bus bars
Short bus bars mount here
Long bus bars mount here
MNE250SMA-SLAVE
A long or short bus bar may be
installed in some locations.
If installing a bus bar for the
first time in any location use
#10 threadforming screws.
To exchange MNSBB Bus Bar mounts for another color.
First remove any wires that will be replaced with the new color.
Next, remove the plastic cover.
To remove the Bus Bar press back gently on the tab on the top of the mounting block and lift up on the bus bar.
After the Bus Bar is removed then remove the screw in the mounting base and set aside. Repeat for the other
mounting block.
Place a mounting block of the new color in place of the previous colored ones. The mounting block has a small
pin formed in the base that goes into the bus bar mounting block locating hole shown above.
The screws supplied with the original mounting blocks are of the threadforming type.
Important! If the screws are overtightened they may strip. If this should occur simply replace the screw with a
10-32 Panhead machine screw and nut.
Hint! Holding the mounting blocks apart and in a straight line while tightening them will make it easier to
reinstall the terminal block.
Replace the snap on terminal block cover and install wires tightening them according to the torque chart in
Appendix C on page 43.
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Starting with a slave
unit
Remove cover by
gently rocking
Finish removing the
terminal block
Terminal block is
removed. Set aside
New mounting block
Note the mounting
block locating pin
Replace the Busbar
and press into place
Replace wiring cover.
Black cover shown here
Gently pry back ear of
mounting block and push
up on terminal block from
below
Remove screws in mounting
blocks to remove mounting
blocks. Set screws aside
Position new mounting blocks
as shown. Secure them with
screws removed earlier*
Completed. Red wires
replaced with blue and
“LEG 2” Sticker replaced
*Important! If the screws are overtightened the threads in the chassis may strip. If this should occur
simply replace the screw with a 10-32 Panhead machine screw and nut.
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SMA E-Panel installation manual
MIDNITE SOLAR INC. LIMITED WARRANTY
MidNite Solar Power electronics, sheet metal enclosures and accessories
MidNite Solar Inc. warrants to the original customer that its products shall be free from defects in
materials and workmanship. This warranty will be valid for a period of five (5) years for all
products except the MNKID Charge Controller which will be two (2) years.
At its option, MidNite Solar will repair or replace at no charge any MidNite product that
proves to be defective within such warranty period. This warranty shall not apply if the
MidNite Solar product has been damaged by unreasonable use, accident, negligence,
service or modification by anyone other than MidNite Solar, or by any other causes
unrelated to materials and workmanship. The original consumer purchaser must retain
original purchase receipt for proof of purchase as a condition precedent to warranty
coverage. To receive in-warranty service, the defective product must be received no later
than two (2) weeks after the end of the warranty period. The product must be accompanied
by proof of purchase and Return Authorization (RA) number issued by MidNite Solar.
For an RMA number contact MidNite Solar Inc., 17722 67th Ave NE unit C, Arlington, WA 98223
(425) 374-9060.
Purchasers must prepay all delivery costs or shipping charges to return any defective MidNite
Solar product under this warranty policy. Except for the warranty that the products are made in
accordance with, the specifications therefore supplied or agreed to by customer:
MIDNITE SOLAR MAKES NO WARRANTY EXPRESSED OR IMPLIED, AND ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WHICH
EXCEEDS THE FOREGOING WARRANTY IS HEREBY DISCLAIMED BY MIDNITE SOLAR
AND EXCLUDED FROM ANY AGREEMENT MADE BY ACCEPTANCE OF ANY ORDER
PURSUANT TO THIS QUOTATION. MIDNITE SOLAR WILL NOT BE LIABLE FOR ANY
CONSEQUENTIAL DAMAGES, LOSS OR EXPENSE ARISING IN CONNECTION WITH THE
USE OF OR THE INABILITY TO USE ITS GOODS FOR ANY PURPOSE WHATSOEVER.
MIDNITE SOLAR’S MAXIMUM LIABILITY SHALL NOT IN ANY CASE EXCEED THE
CONTRACT PRICE FOR THE GOODS CLAIMED TO BE DEFECTIVE OR UNSUITABLE.
Products will be considered accepted by customer unless written notice to the contrary is
given to MidNite Solar within ten (10) days of such delivery to customer. MIDNITE SOLAR is not
responsible for loss or damage to products owned by customer and located on MIDNITE
SOLAR’S premises caused by fire or other casualties beyond MIDNITE SOLAR’s control. This
warranty is in lieu of all other warranties expressed or implied.
MIDNITE SOLAR INC. 17722 67TH AVE NE UNIT C ARLINGTON, WA 98223
Email:
[email protected]
PH: 425-374-9060 FAX: 360-691-6862
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