SMA SMC 7000HV Installation
EN
PV inverter
SUNNY MINI CENTRAL 7000HV
Installation Manual
SMC70HV11-IA-IEN112970 | IME-SMC70HV | Version 7.0
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.2 Symbols on the Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Mounting the Inverter with the Wall Mounting Bracket . . . . . . 18
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 21
5.1.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.2 Interior view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2 Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 24
5.2.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2.2 Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 26
5.2.3 Additional Grounding of the Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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Table of Contents SMA Solar Technology AG
5.3 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.1 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.2 Assembling the DC Plug Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.4.3 Opening the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.4.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5 Connection of the SMA Power Balancer . . . . . . . . . . . . . . . . . 38
5.5.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.2 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.5.3 Testing the Functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.7 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 47
5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.7.2 Setting Stand-alone Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.7.3 Additional Country Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.2 Display Messages During the Startup Phase . . . . . . . . . . . . . . 50
6.3 Self-Test in Accordance with DK 5940, Ed. 2.2
(Applies to Italy Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3.1 Starting the Self-Test by Tapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3.2 Completion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.1 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.2 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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SMA Solar Technology AG Table of Contents
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 61
8.1 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.1 Cleaning the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2.3 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.3 Checking the Electronic Solar Switch (ESS) for Wear . . . . . . . 65
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.1 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.2 Fault Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.3 Red LED is Glowing Continuously. . . . . . . . . . . . . . . . . . . . . . . 73
9.3.1 Checking the PV Array for Ground Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.1 Disassembling the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.2 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.3 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.4 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
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Table of Contents SMA Solar Technology AG
6 SMC70HV11-IA-IEN112970 Installation Manual
SMA Solar Technology AG Information on this Manual
1 Information on this Manual
1.1 Validity
This manual describes the mounting, installation, commissioning, maintenance and troubleshooting
procedures for the following SMA inverters:
• Sunny Mini Central 7000HV (SMC 7000HV-11).
Keep this manual in a convenient place for future reference.
1.2 Target Group
This manual is for electrically skilled persons. The tasks described in this manual may only be
performed by electrically skilled persons.
1.3 Additional Information
You will find further information on special topics such as designing a miniature circuit-breaker or the
description of the operating parameters at www.SMA.de/en.
Refer to the user manual provided for detailed information on operating the inverter.
Installation Manual SMC70HV11-IA-IEN112970 7
Information on this Manual SMA Solar Technology AG
1.4 Symbols Used
The following types of safety precautions and general information appear in this document as
described below.
DANGER!
"DANGER" indicates a hazardous situation which, if not avoided, will result in death or
serious injury!
WARNING!
"WARNING" indicates a hazardous situation which, if not avoided, could result in death
or serious injury!
CAUTION!
"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury!
NOTICE!
"NOTICE" indicates a situation that can result in property damage if not avoided!
Information
Information provides tips that are valuable for the optimal installation and operation
of your product.
☑ This symbol indicates the result of an action.
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SMA Solar Technology AG Security
2 Security
2.1 Intended Use
The Sunny Mini Central is a PV inverter, which converts the direct current of the PV array to
grid-compliant alternating current and feeds it into the power distribution grid.
Operating Principle of a PV Plant with Sunny Mini Central
The Sunny Mini Central is suitable for indoor and outdoor use.
The Sunny Mini Central may only be operated with PV arrays (PV modules and cabling) of protection
class II. The PV modules used have to be suitable for use with the Sunny Mini Central and must be
released by the module manufacturer.
Alternative uses, modifications to the Sunny Mini Central or the installation of components not
expressly recommended or sold by SMA Solar Technology AG are not permitted.
Persons with limited physical or mental abilities may only work with the Sunny Mini Central following
proper instruction and under constant supervision. Children are forbidden to play with the
Sunny Mini Central. Keep the Sunny Mini Central away from children.
Only use the Sunny Mini Central in accordance with the information provided in the enclosed
documentation. Any other use can result in personal injury or property damage.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in areas with a risk of explosion.
The enclosed documentation is a part of this product. Read and follow the documentation for the
proper and optimum use of the Sunny Mini Central. Keep this documentation in a convenient place
for future reference.
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Security SMA Solar Technology AG
2.2 Safety Instructions
Electric Shock
High voltages that can result in electrical shocks are present in the conductive component parts of the
inverter.
• Disconnect the inverter from voltage sources as described in this manual before performing any
work on it (see section 7.2"Opening the Inverter" (page56)).
Burn Hazard
Some parts of the Sunny Island enclosure can become hot during operation.
• Only touch the enclosure lid of the inverter during operation.
Environmental Influences
When closed and with the Electronic Solar Switch attached, the inverter complies with the IP65
degree of protection. The inverter is thus protected against the penetration of dust and water.
The penetration of dust and water can damage the inverter.
• If the Electronic Solar Switch is not attached, the inverter must be protected against dust
and water.
• Securely attach the Electronic Solar Switch again after any work on the inverter.
Electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic
discharge.
• Ground yourself before touching any component parts.
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SMA Solar Technology AG Security
2.3 Explanation of Symbols
This section gives an explanation of all the symbols found on the inverter and on the type label.
2.3.1 Symbols on the Inverter
Symbol Explanation
Operation display.
Indicates the operating state of the inverter.
Ground fault or varistor defective.
Read section 9.3"Red LED is Glowing Continuously" (page73).
Fault or disturbance.
Read section 9"Troubleshooting" (page66).
You can operate the display by tapping.
• Tapp ing once: t he bac kground li ght switch es on or the displ ay scrolls
one message further.
• 2 taps in quick succession
from the startup phase again (see section 6.2"Display Messages
During the Startup Phase" (page50)).
DC load disconnection unit Electronic Solar Switch (ESS)
• When the Electronic Solar Switch is plugged in, the DC circuit is
closed.
• To interrupt the DC circuit and disconnect the inverter securely
under load, you have to first pull out the Electronic Solar Switch
and then remove all DC connectors , as described in section
7.2"Opening the Inverter" (page56).
®**
QR-Code
for SMA bonus program
You will find information on the SMA bonus program at
www.SMA-Bonus.com.
*
: The inverter shows the display messages
* This function is valid from firmware version 2.10.
** QR-Code is a registered trademark of DENSO WAVE INCORPORATED.
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Security SMA Solar Technology AG
2.3.2 Symbols on the Type Label
Symbol Explanation
Beware of dangerous electrical voltage.
The inverter operates at high voltages. All work on the inverter may only be
carried out by electrically skilled persons.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact during
operation.
Observe all documentation that accompanies the inverter.
Th e in ver ter must not be d isp ose d of tog eth er w ith the h ous eho ld waste. For
more information on disposal, see section 10.4"Disposing of the Inverter"
(page79).
CE mark.
The inverter complies with the requirements of the applicable
EC guidelines.
The inverter has a transformer.
Direct current (DC)
Alternating current (AC)
Degree of protection IP65.
The inverter is protected against penetration by dust particles and water
jets from any angle.
RAL quality mark for solar products.
The inverter complies with the requirements of the German Institute for
Quality Assurance and Labeling.
In compliance with Australian mark
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SMA Solar Technology AG Security
Symbol Explanation
Chinese mark of conformity
In compliance with Korean mark
Installation Manual SMC70HV11-IA-IEN112970 13
Unpacking SMA Solar Technology AG
3 Unpacking
3.1 Scope of Delivery
Check the delivery for completeness and for any visible external damage. Contact your dealer if
anything is damaged or missing.
Position Quantity Description
A 1Sunny Mini Central
B 1 Ventilation grids (right/left)
C 1 Wall mounting bracket
D 1 DC load disconnection unit Electronic Solar Switch (ESS)
E 8 DC plug connectors (4 x positive, 4 x negative)
F 8 Sealing plugs for DC connectors
G 1 Cable gland for AC connection
H 1 Counter nut for cable gland at AC connection
I 1 Clamping clip for additional grounding
K 2 Conical spring washers:
1 x for cover screws (replacement), 1 x for ground terminal
L 2 Cylinder head screws (M6 x 16):
1 x for enclosure lid (replacement), 1 x for ground terminal
M 2 Jumper (1 x for fan test, 1 x for the SMA Power Balancer wiring)
N 2 Cylinder head screws (M6 x 8) for securing the inverter to the wall
mounting bracket
O 1 Silicone tube for insulating the SMA Power Balancer connection
cable
P 1 Installation manual
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SMA Solar Technology AG Unpacking
Position Quantity Description
Q 1 User manual
R 1Set of documents with explanations and certificates
S 1 Supplementary sheet with inverter factory settings
3.2 Identifying the Inverter
You can identify the inverter using the type label. The type label is on the right-hand side of the
enclosure.
The serial number (Serial No.) and the type (Type/Model) of the inverter, as well as device-specific
characteristics are specified on the type label.
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Mounting SMA Solar Technology AG
4 Mounting
4.1 Security
DANGER!
Danger to life due to fire or explosion!
Despite careful construction, electrical devices can cause fires.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in areas with a risk of explosion.
CAUTION!
Danger of burn injuries due to hot enclosure parts!
• Mount the inverter in such a way that it cannot be touched inadvertently.
CAUTION!
Risk of injury due to the heavy weight of the inverter!
• Take the inverter's weight of approx. 65 kg into account for mounting.
4.2 Selecting the Mounting Location
Consider the following requirements when selecting the mounting location:
• The mounting method and location must be suitable for the inverter's weight and dimensions
(see section 11"Technical Data" (page80)).
• Mount on a solid surface.
• The mounting location must at all times be clear and safely accessible without the use of
additional aids such as scaffolding or lifting platforms. Non-fulfillment of these criteria may
restrict servicing.
• Mount vertically or tilted backwards by max. 45°.
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SMA Solar Technology AG Mounting
500 mm
300 mm
300 mm
50 mm
300 mm
• The connection area must point downward.
• Never mount the device with a forward tilt.
• Never install the device with a sideways tilt.
• Do not mount horizontally.
• Mount at eye level to allow operating states to be read at all times.
• The ambient temperature should be below 40°C to ensure optimum operation.
• Do not expose the inverter to direct sunlight as this can cause excessive heating and thus
power reduction.
• In living areas, do not mount the unit on plasterboard walls or similar to avoid audible
vibrations. When in use, the inverter emits noises which may be perceived as a nuisance in a
living area.
• Observe the minimum clearances to walls, other
inverters or objects as shown in the diagram in
order to ensure sufficient heat dissipation and
sufficient space for removing the
Electronic Solar Switch.
Multiple inverters installed in areas with high ambient temperatures
There must be sufficient clearance between the individual inverters to ensure that the
cooling air of the adjacent inverter is not taken in.
If necessary, increase the clearance spaces and make sure there is en ough fr esh air supply
to ensure sufficient cooling of the inverters.
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Mounting SMA Solar Technology AG
4.3 Mounting the Inverter with the Wall Mounting Bracket
1. Mark the position of the drill holes using the wall mounting bracket and drill the holes.
Use at least 2 of the 6 holes, with one hole on the right and one on the left.
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SMA Solar Technology AG Mounting
CAUTION!
Risk of injury due to the heavy weight of the inverter!
The inverter weights 65 kg.
• Attach the wall mounting bracket with the corresponding mounting material
(depending on the surface).
• U se t he side h and les (ab ove and belo w)
or a steel rod (maximum diameter of
30 mm) for transport and mounting.
The rod must be pushed through the
enclosure openings.
2. Secure the wall mounting bracket to the wall using
appropriate screws and washers.
3. Hang the inverter onto the wall mounting bracket
using the opening for this purpose in the rear of the
enclosure.
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Mounting SMA Solar Technology AG
4. Screw the inverter onto the wall mounting bracket
on both sides using the screws (M6x8) provided.
For this purpose, only tighten the screws by hand.
5. Make sure that the inverter is securely seated.
6. Close the recessed grips with the fan grills
provided. To help you identify the sides, the
ventilation grids are marked "rechts/right" and
"links/left" on the inside.
The ventilation grids prevent dirt and insects from
entering the device and, if necessary, can be
reordered from SMA Solar Technology AG
(see section 13"Contact" (page85)).
Optional Theft Protection
To protect the inverter against theft, the rear
panel can be secured to the wall at the bottom
using 2 single-use bolts.
The other two holes are spares.
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SMA Solar Technology AG Electrical Connection
5 Electrical Connection
NOTICE!
Electrostatic discharges can damage the inverter!
Internal component parts of the inverter can be irreparably damaged by static discharge.
• Ground yourself before touching a component.
5.1 Overview of the Connection Area
5.1.1 Exterior View
The following figure shows the assignment of the individual connection areas on the bottom of the
inverter.
Position Description
A DC connectors for connecting the strings
B Socket for connecting the Electronic Solar Switch (ESS)
C Cable glands for optional communication via RS485 or radio (PG16)
D Cable gland for grid connection (AC) (12 mm … 25 mm)
E Cable glands for SMA Power Balancer
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Electrical Connection SMA Solar Technology AG
5.1.2 Interior view
The following figure shows the various components and connection areas of the open inverter.
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SMA Solar Technology AG Electrical Connection
Position Description
A Connection area and slots for communication
B Display
C Jumper slot for the fan test
D LEDs for displaying the operating states
E Jumper slot for SMA Power Balancer
F Connections terminals for SMA Power Balancer
G Flat connector for grounding the cable shield when connecting the
SMA Power Balancer
H Additional connection terminal for grounding
I Cable glands for the SMA Power Balancer
K Connection terminals for mains cable (AC)
L Cable gland for grid cable (AC)
M Cable glands for communication
N Screwing device for shield clamp for communication cable
O DC plug connector
P Connection socket for Electronic Solar Switch (ESS)
Q Varistors
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Electrical Connection SMA Solar Technology AG
5.2 Connection to the Power Distribution Grid (AC)
5.2.1 Conditions for the AC Connection
Connection requirements of the distribution grid operator
Always observe the connection requirements of your distribution grid operator!
Cable design
Use "Sunny Design" version 2.0 or higher for the dimensioning of the conductor cross-sectional areas
(see "Sunny Design" design program at www.SMA.de/en).
Cut line losses in half
If three inverters with symmetrical feeding are combined to form a three-phase system, the
neutral conductor is not subjected to any load, and the line losses are halved. Thus, the
maximum possible cable length is doubled.
Cable Requirements
Position Description Value
A External diameter 12 mm ... 25 mm
B Conductor cross-section 10 mm² … 16 mm²
C Length of insulation to be stripped off approx. 16 mm
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SMA Solar Technology AG Electrical Connection
Load Disconnection Unit
You must install a separate line circuit breaker for each inverter in order to ensure that the inverter
can be securely disconnected under load. The maximum permissible rating can be found in
section 11"Technical Data" (page80).
Detailed information and examples for the rating of a miniature circuit-breaker can be found in the
Technical Information "Line Circuit Breaker" in the SMA Solar Technology AG download area at
www.SMA.de/en.
DANGER!
Danger to life due to fire!
When more than one inverter is connected to the same miniature circuit-breaker, the
protective function of the miniature circuit-breaker is no longer guaranteed. It can result in
a cable fire or destruction of the inverter.
• Never connect several inverters to a single miniature circuit-breaker.
• Observe the maximum permissible fuse protection of the inverter when selecting the
miniature circuit-breaker.
DANGER!
Danger to life due to fire!
When a generator (inverter) and a load are connected to the same miniature circuitbreaker, the protective function of the miniature circuit-breaker is no longer guaranteed.
The currents from the inverter and the grid can accumulate to over-currents that are not
detected by the miniature circuit-breaker.
• Never connect loads between the
inverter and the miniature circuit-breaker
without protection.
• Always protect consumers separately.
NOTICE!
Damage to the inverter by using screw type fuses as a load disconnection unit!
A screw type fuse, e.g. DIAZED fuse or D0 system (Neozed), is not a load disconnection
device, and thus may not be used as a load disconnection unit. A screw type fuse only acts
as cable protection.
When disconnecting under load using a screw type fuse, the inverter can be damaged.
• Use only a switch-disconnector or a miniature circuit-breaker as a load
disconnection unit.
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Electrical Connection SMA Solar Technology AG
5.2.2 Connecting the Inverter to the Power Distribution Grid (AC)
1. Check the grid voltage and compare with "V
The exact operating range of the inverter is specified in the operation parameters. The
corresponding document can be found in the download area at www.SMA.de/en, in the
"Technical Description" category of the respective inverter.
2. Disconnect the miniature circuit-breaker and secure against re-connection.
3. Remove all lid screws and detach the enclosure lid.
4. R emo ve the adhe sive ta pe fro m the A C cable glan d
(see "D" on Page 21).
5. Insert the AC cable gland from the outside into the
enclosure opening and tighten it from the inside
with the counter nut.
6. Unscrew the cable gland's lock nut and pass it over
the cable.
7. Route the cable through the cable gland to the
AC terminal.
8. Connect L, N and the protective conductor (PE) to
the connecting terminal plate using a screwdriver in
accordance with the label.
To do this, the protective conductor must be 5 mm
longer than the L and N wires.
L and N must not be swapped!
" on the type plate.
AC nom
26 SMC70HV11-IA-IEN112970 Installation Manual
SMA Solar Technology AG Electrical Connection
9. Tighten the lock nut firmly to the cable gland.
10. Close the cable gland tightly on the enclosure opening.
11. Tighten the enclosure lid with all screws and the
corresponding conical spring washers in the
sequence depicted on the right (torque: 6 Nm).
The toothing of the conical spring washers must
point toward the enclosure lid.
The scope of delivery of the inverter includes
another spare screw and conical spring washer.
DANGER!
Danger to life due to enclosure lid carrying voltage!
The grounding of the enclosure lid is ensured by the conical spring washers.
• Fast en the coni cal spring washers for all 6 screws wi th the toothing facing toward the
enclosure lid.
DANGER!
Danger to life due to high voltages in the inverter!
• Do not switch on the miniature circuit-breaker until the PV array has been connected
and the inverter is securely closed.
☑ The inverter is now connected to the power distribution grid (AC).
Installation Manual SMC70HV11-IA-IEN112970 27
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