SMA VOLTAGE STABILIZER User Manual
EN
Accessories for Central Inverter
VOLTAGE STABILIZER
Installation Guide
Ukonstanter-IEN103610 | 98-4042110 | Version 1.0
SMA Solar Technology AG Table of Contents
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Check for Transport Damage . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Scope of Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Choosing an Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Mounting the Voltage Stabilizer . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Overview of External Components for Internal Power Supply . 14
5.2 Line Circuit Breaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3 Inserting the Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Connecting the Cables Inside the Voltage Stabilizer . . . . . . . . 16
5.5 Connecting the Cables in the Sunny Central . . . . . . . . . . . . . . 20
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . 24
8 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Installation Guide Ukonstanter-IEN103610 3
Table of Contents SMA Solar Technology AG
4 Ukonstanter-IEN103610 Installation Guide
SMA Solar Technology AG 1Notes on this Manual
1 Notes on this Manual
Area of Validity
This manual is valid for the voltage stabilizer.
This manual supplements the installation manual of the following inverters:
• Sunny Central 400HE-11 (SC 400HE-11)
• Sunny Central 500HE-11 (SC 500HE-11)
• Sunny Central 630HE-11 (SC 630HE-11)
These inverter types will be referred to as "Sunny Central" in the following.
Combining the voltage stabilizer with other inverter types is not possible and is explicitly not
recommended.
Target Group
This guide is for electrically skilled persons. A qualified electrically skilled person is conversant with
the practices of installing electrical systems as well as the dangers and risks involved.
Additional Information
You can find further information on special subjects in the download area at www.SMA.de/en.
There are many items available for download including the following information:
•SunnyCentralxxxHE-11 installation manual
• technical information on the Sunny Central
Installation Guide Ukonstanter-IEN103610 5
1Notes on this Manual SMA Solar Technology AG
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Symbols Used
The following types of safety notes and general information are used in this manual:
"DANGER" indicates a hazardous situation which, if not avoided, will result in death or serious
injury.
"WARNING" indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or moderate
injury.
"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.
✖ This symbol indicates a possible error.
6 Ukonstanter-IEN103610 Installation Guide
SMA Solar Technology AG 2Safety
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SUNNY CENTRAL 630HE
2Safety
2.1 Appropriate Usage
The voltage stabilizer connects the Sunny Central with the public power distribution grid in order to
secure the internal power supply of the inverter. The voltage stabilizer reduces fluctuating grid
voltages in order to ensure a constant power supply to the SunnyCentral.
The voltage stabilizer may only be used with a specially adapted Sunny Central xxxHE-11 device.
If a voltage stabilizer is installed later as an upgrade, SMA Solar Technology AG must be contacted
about the modification of the inverter.
Figure1:Principle of the voltage stabilizer
Position Description
A Power distribution grid
BVoltage stabilizer
C Sunny Central
Any other usage or installation of components and modifications than described in the usage
regulations jeopardize the operational safety of the device and void all warranty claims as well as
the operation permission.
Installation Guide Ukonstanter-IEN103610 7
2Safety SMA Solar Technology AG
2.2 Safety Instructions
Following Handling Instructions
High voltages are present in the voltage stabilizer. Failure to follow this manual, the operating
instructions and the safety notes may lead to severe injury from electric shock. Only perform work as
described in this manual. Observe all safety notes.
Disconnecting the Device
Work on the inverter is only allowed if the power is disconnected and in compliance with the
guidelines that apply at the installation location.
• Disconnecting the device:
–grid voltage
• Ensure that the device cannot be reconnected.
• Ensure that no voltage is present in the system.
• Ground and short-circuit.
• Cover or safeguard any adjacent live components.
Error-Free Operation of the Voltage Stabilizer
In case of a ground fault, assume that grounded plant components are still live. Ensure there is no
voltage present before touching.
The operation of a damaged voltage stabilizer can lead to serious injuries through electric shock.
Operate the voltage stabilizer only if it is in a technically proper and operationally safe status.
Operate the voltage stabilizer only if there is no visible damage and check regularly for visible
damage. Ensure that all external safety equipment is freely accessible at all times and is checked for
proper functioning at least once a year.
Protective Conductor Connection
Also connect the grounding bridge when replacing the voltage stabilizer.
Warning Signs
Warning signs must be easily readable at all times and must be replaced in the event of
damage.
Storing the Documentation
Keep this documentation within close reach of the voltage stabilizer. It must be accessible to
service and maintenance personnel at all times.
8 Ukonstanter-IEN103610 Installation Guide
SMA Solar Technology AG 2Safety
2.3 Personnel
All work on the voltage stabilizer may only be carried out by qualified technical personnel.
Qualified means that the personnel has the relevant training for the tasks.
The personnel must be familiar with the contents of this guide and the Sunny Central manual in order
to commission and operate the voltage stabilizer. Especially the safety notes must be observed.
Installation Guide Ukonstanter-IEN103610 9
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