SMA SMC 5000 Installation
Sunny Mini Central 5000/6000
Central inverter for homogeneous PV-plants
Installation Guide Version 1.2 SMC50_60-11:SE2006
IME-SMC50-60
SMA Technologie AG Explanation of Symbols used in this Document
Explanation of Symbols used in this Document
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Installation Guide SMC50_60-11:SE2006 Page 3
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SMA Technologie AG
Hannoversche Strasse 1-5
34266 Niestetal
Germany
Tel. (+49) 5 61 95 22 – 0
Fax (+49) 5 61 95 22 – 100
www.SMA.de
E-Mail: info@SMA.de
© 2005 SMA Technologie AG. All rights reserved.
Page 4 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Table of Contents
Table of Contents
1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Device Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.2 External Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.2.1 OptiCool Temperature Management . . . . . . . . . . . . . . . .13
4 Requirements for the Installation . . . . . . . . . . . . . . . . 15
4.1 Requirements: Mounting Place . . . . . . . . . . . . . . . . . . . . . . . .15
4.2 Requirements: PV-Modules. . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3 String sizing of Sunny Mini Central PV plants . . . . . . . . . . . . .18
4.4 Requirements: Grid 230 V (AC) . . . . . . . . . . . . . . . . . . . . . . .18
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.2 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.3 Reverse Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
5.4 Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6 Opening and Closing the Sunny Mini Central . . . . . . 35
6.1 Opening the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . .35
6.2 Closing the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . .35
7 Technical Documentation . . . . . . . . . . . . . . . . . . . . . 37
7.1 Sunny Mini Central 5000. . . . . . . . . . . . . . . . . . . . . . . . . . . .37
7.1.1 Data PV Generator Connection . . . . . . . . . . . . . . . . . . . .37
7.1.2 Data Grid Connection. . . . . . . . . . . . . . . . . . . . . . . . . . .37
7.2 Sunny Mini Central 6000. . . . . . . . . . . . . . . . . . . . . . . . . . . .38
7.2.1 Data PV Generator Connection . . . . . . . . . . . . . . . . . . . .38
7.2.2 Data Grid Connection. . . . . . . . . . . . . . . . . . . . . . . . . . .38
7.3 Description of Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
7.4 Sunny Mini Central Operating Parameters . . . . . . . . . . . . . . .40
8 Checking the heat dissipation . . . . . . . . . . . . . . . . . . 43
8.1 Cleaning the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
8.2 Testing the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
8.3 Cleaning the Fins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
9 Exchanging Varistors . . . . . . . . . . . . . . . . . . . . . . . . 47
10 Sizing of a Circuit Breaker . . . . . . . . . . . . . . . . . . . . 51
11 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Installation Guide SMC50_60-11:SE2006 Page 5
SMA Technologie AG
Page 6 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Introduction
1 Introduction
The installation of the Sunny Mini Central may only be done by
qualified technicians. The installer must be approved by the utility
company. Please read the installation guide carefully before you
begin with the installation. The installation of utility interactive
power sources must be compliant with all applicable regulations of
the utility company and with all applicable regulations and
standards.
The Sunny Mini Central 5000/6000 is equipped with the SMA grid guard. This
is a type of independent disconnection device. It ensures that the Sunny Mini
Central 5000/6000 complies with the VDEW (Verband der
Elektrizitätswirtschaft – German Electricity Industry Association) regulations for
the connection and parallel operation of electrical power units to the lowvoltage grid of the electricity supply company and with DIN VDE 0126 (4.99)
which is a part of these regulations.
This installation manual is intended solely for qualified electricians. Its aim is to help
install and set up SMA Sunny Mini Central 5000/6000 inverters quickly and
correctly.
For detailed information on troubleshooting and on how to use the Sunny Mini
Central 5000/6000, including information about the different communication
options, please see the operating instructions.
The „Sunny Design“ tool will help to dimension and check the size of your strings with
respect to the inverter you intend to use. Further information about „Sunny Design“
is available at www.SMA.dSunny Mini CentralSunny Mini Centrale.
If you require further information, please call the Sunny Mini Central hotline on the
following number:
+49 561 95 22 - 499
Installation Guide SMC50_60-11:SE2006 Page 7
Introduction SMA Technologie AG
Page 8 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Safety Instructions
2 Safety Instructions
Check your plant configuration and the
string sizing with „Sunny Design“ (available at www.SMA.de) or with the Sunny
Mini Central Hotline before you start with
the installation. Exceeding the specifications with the input voltage will destroy
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Work on the Sunny Mini Central with the lid removed must be
carried out by a qualified electrician. Hazardous and even lethal
voltages can be encountered within the enclosure. Before working
on the Sunny Mini Central with the lid removed, the AC and DC
voltages MUST be disconnected from the Sunny Mini Central and it
must be sure that all capacitors are discharged.
the Sunny Mini Central. Overvoltage on
the DC side can even cause dangerous explosions of the Sunny Mini Centrals input
capacitors and explosions of the electrolytes coming from the exploded capacitors.
The Sunny Mini Central must be disconnected from the mains and
precautions must be taken to prevent the grid being reconnected.
In addition, the connections to the PV generator must be
disconnected.
After isolating the AC and DC voltage you must wait approx. 30
minutes for the capacitors in the Sunny Mini Central to discharge.
Only then is it safe to open the unit by removing the lid. You must
also make sure that no voltage is present in the device.
The electronics inside your Sunny Mini Central 5000/6000 is
vulnerable in terms of electrostatic discharge. Be sure to be
connected to ground (e.g. the enclosure of the Sunny Mini Central)
before handling anything within the enclosure of the Sunny Mini
Central.
Installation Guide SMC50_60-11:SE2006 Page 9
Safety Instructions SMA Technologie AG
Page 10 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Overview
3 Overview
3.1 Device Description
The following figure shows the different components and connection areas of an
open Sunny Mini Central 5000/6000 inverter.
Varistors
page 47
Communication socket (RS232,
RS485, NLM Piggy-Back, radio)
Socket for display unit (Sunny
Display)
LEDs indicating
operating state
Communication
terminal
Socket for PLC
(Powerline Communication) power unit
Terminals (PE),
page 27
Terminals (AC),
page 27
PV input plug (DC),
page 29
Installation Guide SMC50_60-11:SE2006 Page 11
Cable gland for com-
munication
Cable gland for AC
connection cable
Overview SMA Technologie AG
3.2 External Dimensions
250 mm
430 mm
600 mm
Page 12 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Overview
3.2.1 OptiCool Temperature Management
With the patented dual compartment cooling system
OptiCool, SMA now offers a technical solution combining both passive and active cooling systems. An "intelligent temperature management” is the result.
In order to achieve maximum efficiency the whole enclosure of the inverter becomes part of the cooling system. It does not only contain and protect the
components but also functions as a “cooling air distributor” and heat distributor.
The actual heat sink, as central component of the passive heat dissipation, is positioned within the enclosure
in such a way as to divide it into two compartments. The
highly sensitive electronics separated from the main
heat sources by the heat sink is securely protected from
external influences, such as moisture and dirt, in the
front waterproof compartment.
In the rear part, the temperature-intensive components,
such as chokes and transformers, which are either separately sealed or are intensive to ambient influences,
are installed.
A specifically designed active cooling system is positioned on the bottom of the rear compartment. Depending on the temperature of the power semiconductors
and the inductive components it is automatically activated and adjusts its speed according to the requirements
of a balanced heat dissipation within the device.
The air stream produced by the fans is effectively canalized through a stream tunnel. It dissipates the waste
heat of the heat sink as well as the components installed in this part.
Using OptiCool reduces the components' temperature in the entire inverter resulting
in high reliability and excellent overload performance. The efficiency of the inverter
and thus of the entire PV plant can therefore be increased.
Using a dual compartment system with a waterproof area for the electronics makes
the inverter suitable for inside as well as outside installation (near the PV generator).
Installation Guide SMC50_60-11:SE2006 Page 13
Overview SMA Technologie AG
Page 14 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Requirements for the Installation
4 Requirements for the Installation
Please make sure to fulfill all conditions below before installing and commissioning
the Sunny Mini Central 5000/6000.
4.1 Requirements: Mounting Place
The Sunny Mini Central 5000/6000 has a relatively high weight of
63 kg. Please keep this in mind when selecting the place where and
how to mount the Sunny Mini Central 5000/6000.
The ambient temperature must be within -25°C and +60 °C.
The Sunny Mini Central 5000/6000 should be installed at a place
where it is not exposed to direct sunlight - otherwise this may reduce
the yield of the PV plant due to the higher temperature.
63 kg
The Sunny Mini Central is designed to be mounted on a vertical wall. For an optimum
energy yield and the most convenient operation, vertical installation at eye-level is
preferable. In case it is absolutely necessary to tilt the Sunny Mini Central to the back
the maximum angle is 45 °. If installing the unit outdoors, make sure that it is not
slanting forwards. We advise against installing the unit in a horizontal position
outdoors.
It is not reccomended to install the Sunny Mini Central lying on the back side with the
lid facing upwards.
Mount the Sunny Mini Central in a vertical
position or with a slight angle to the back.
Installation Guide SMC50_60-11:SE2006 Page 15
Do not mount the Sunny Mini Central with
an angle to the front or on the back.
Requirements for the Installation SMA Technologie AG
Important for the selection of the location:
Unintended removal of the PV plug connectors can damage the
connectors and even result in serious injuries. Install the Sunny
Mini Central 5000/6000 at a place where an unintended removal
of the PV plug connectors (e. g. by children) is not possible.
Individual components in the Sunny Mini Central can reach a temperature of more than 60 °C.
Do not install the Sunny Boy on flammable construction materials,
in areas where highly inflammable materials are stored or in potentially explosive environments!
Please make sure there is a sufficient space for heat dissipation! In a normal environment the following clearances should be provided for the Sunny Mini Central 5000/
6000:
Minimum clearances
Lateral 30 cm
30
cm
Top 30 cm
Bottom 30 cm
Front 5 cm
30 cm
5
cm
30
cm
30 cm
If you decide to install the Sunny Mini Central 5000/6000 in an area with high ambient temperatures, you should enlarge the clearances. Otherwise the Sunny Mini
Central 5000/6000 could take air in from the devices next to it. Ensure sufficient ventilation.
Page 16 SMC50_60-11:SE2006 Installation Guide
SMA Technologie AG Requirements for the Installation
In a living area the Sunny Mini Central 5000/6000
should not be mounted on plaster panels etc. in order
to avoid noises.
We recommend to install the inverter on a firm and sturdy surface.
The Sunny Mini Central 5000/6000 will emit a slight
noise during operation. This noise can be annoying
when the Sunny Mini Central is installed within a living
area.
Installation Guide SMC50_60-11:SE2006 Page 17
Requirements for the Installation SMA Technologie AG
4.2 Requirements: PV-Modules
The Sunny Mini Central 5000/6000 is designed for the connection of large scales
with homogeneous structure (PV modules of the same type, same direction and slant).
The „Sunny Design“ tool will help to dimension and check the size of your strings with
respect to the inverter you intend to use. The „Sunny Design“ tool is available for
download at www.SMA.de.
The device has eight PV plug connectors (two for each string). The connecting cables
of the PV panel therefore have to be equipped with such plug connectors as well. A
connection kit for the connection of loose cable ends in a string can be purchased as
an accessory. In the following you find the SMA order numbers for the different PV
plug connectors:
• Multi-Contact 3 mm: „SWR-MC“
• Multi-Contact 4 mm: „MC-SET“
• Tyco: „TYCO-SET“
Limits for DC input
max. voltage 600 V (DC)
max. input current 26 A (DC)
The strings are connected in parallel inside the Sunny Mini Central 5000/
6000. Check if the cabling of the generator can handle high short-circuit currents. See also chapter 5.3 „Reverse Current” (page 30).
4.3 String sizing of Sunny Mini Central PV plants
Different from the Sunny Mini Centrals you are able to connect three or more strings
in parallel to the Sunny Mini Central 5000/6000. This sounds not very critical, but a
consequence is that failures which are not harmful in string plants have to be considered in plants with big generators: Because of short circuits. See also chapter 5.3
„Reverse Current” (page 30).
4.4 Requirements: Grid 230 V (AC)
The relevant technical regulations as well as specific requirements defined by the local public utility have to be
complied with. The terminals of the Sunny Mini Central
5000/6000 are suitable for cables with a cross-section
of up to 16 mm² . Their outer diameter should be between 11 mm and 25 mm. If you
choose a cable with a diameter less than 14 mm (at least 11 mm), you have to
change the rubber grommet of the connection. A smaller rubber grommet is included
in the shipping box.
The Sunny Mini Central 5000/6000 is connected with three wires (L, N, PE).
Page 18 SMC50_60-11:SE2006 Installation Guide
o
11 ... 25 mm
max. 16 mm²
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