SMA VOLTAGE STABILIZER User Manual

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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 1Notes 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

1Notes 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 2Safety

S M A

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.

Figure1: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

2Safety 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 2Safety

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

3Delivery SMA Solar Technology AG

3Delivery

3.1 Check for Transport Damage

Despite the robust packaging, damage can occur during shipping and transport. Check the voltage stabilizer visually before installation. Should you detect any external defects, contact your supplier.

3.2 Scope of Supply

Figure2:Components of the supply

Position Description

AVoltage stabilizer

10 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 4Mounting

100 mm

500 mm

4Mounting

4.1 Choosing an Installation Site

Requirements:

☐ Installation site is located inside a closed building. ☐ The foundations must be level and solid. ☐ The installation site is not in close proximity to a source of heat. ☐ Minimum clearances have been observed.

Minimum Clearances:

Fi gur e3 :M ini mum cle ara nce s be twe en t he v olt age sta bil ize r an d non-electronic components in its close proximity.

Figure4:Minimum clearances between the voltage stabilizer and electronic components in its close proximity.

Installation Guide Ukonstanter-IEN103610 11

4Mounting SMA Solar Technology AG

500 mm

SUNNY CENTRAL 630

SMA

Figure5:Minimum clearance to the Sunny Central

4.2 Mounting the Voltage Stabilizer

Additional Material:

☐ The screw anchors, screws and washers required for mounting must be provided by the

customer.

Figure6:Position of the mounting rail and measurements of the hole in the mounting rail

12 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 4Mounting

1. Mark the position of the drill holes.

2. Drill the holes and insert suitable screw anchors.

3. Attach the voltage stabilizer to the floor using appropriate screws and washers.

4. Check that the voltage stabilizer is securely in place.

Installation Guide Ukonstanter-IEN103610 13

5Electrical Connection SMA Solar Technology AG

5 Electrical Connection

5.1 Overview of External Components for Internal Power Supply

Figure7:Connection area of the inverter and the voltage stabilizer

Position Description

AInverter

B Line circuit breaker (type D)

C Station sub-distribution

DVoltage stabilizer

E 415 V circuit (unstable input voltage)

F 230 V circuit (stabilized output voltage)

G Temperature monitoring

The temperature circuit monitors the operating temperature of the voltage stabilizer. If the operating temperature of the voltage stabilizer exceeds 50 °C, the Sunny Central will shut down since the voltage stabilizer will no longer be able to ensure a stable power supply.

5.2 Line Circuit Breaker

In order to operate the voltage stabilizer, it is necessary to secure the power supply of the Sunny Central with a 16 A type D line circuit breaker. The line circuit breaker is located in the station sub-distribution.

• Check which line circuit breaker is installed.

☑ A 16 A type D line circuit breaker is installed. ✖ There is no 16 A type D line circuit breaker installed?

14 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 5Electrical Connection

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• Replace it with a matching type D line circuit breaker.

5.3 Inserting the Cables

Required cables:

☐2x1.5mm2 cable for temperature monitoring ☐3x4mm ☐2x4mm ☐1x4mm

Flashover along the surface of the cable insulation.

• Use separate cable channels for the 230 V circuit and the 415 V circuit in order to ensure

cable for the 230 V circuit, maximum cable length: 7 m

cable for the 415 V circuit

PE cable for the enclosure

sufficient insulation between the two circuits.

Figure8:Cable glands on the side

Position Description

A Cable gland for temperature monitoring

B Cable gland for 415 V circuit and the protective conductor cable

C Cable gland for the 230 V circuit

Installation Guide Ukonstanter-IEN103610 15

5Electrical Connection SMA Solar Technology AG

/05*$&

1. Unscrew the screws on the cover and remove the cover.

2. Insert the protective conductor cable through the cable gland.

3. Insert the temperature monitoring cables through the cable gland.

4. Insert the cable of the 415 V circuit through the cable gland.

5. Insert the cable of the 230 V circuit through the cable gland.

6. Attach the cable inside the voltage stabilizer in such a manner as to ensure proper strain relief.

5.4 Connecting the Cables Inside the Voltage Stabilizer

There will be no proper protection if the protective conductor cable is connected incorrectly.

Check if the grounding bridge matches the circuit diagram.

Circuit Diagram

For all electrical connections, it is imperative that you use the provided Sunny Central circuit diagram.

16 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 5Electrical Connection

Overview of the Connection Area in the Voltage Stabilizer

Figure9:

Object Description

A 415 V circuit

B 230 V circuit

C Temperature monitoring

Connection to Terminals

• All connection terminals that are not being used must be screwed tightly.

• Strip 5 mm from the cable insulation.

• Observe the following torques when connecting the cables to the terminals:

M3 0.6 … 0.8 Nm

M4 1.5 … 1.8 Nm

M6 3.2 … 3.7 Nm

Procedure:

• Connect the protective conductor cable.

• Connect the temperature monitoring.

• Connect the 230 V circuit.

• Connect the 415 V circuit.

• Close the voltage stabilizer.

Installation Guide Ukonstanter-IEN103610 17

5Electrical Connection SMA Solar Technology AG

415

230

Connecting the Protective Conductor Cable

1. Check if the protective conductor bridge is available at the terminal strip according to the circuit diagram.

☑ Protective conductor bridge is available. ✖ Protective conductor bridge is not available?

• Establish protective conductor bridge according to the circuit diagram.

2. Strip the cable insulation.

3. Attach a terminal lug to the cable.

4. Connect the protective conductor cable to the protective conductor grounding point in the voltage stabilizer.

5. Connect the protective conductor cable to the protective conductor rail in the station subdistribution outside of the voltage stabilizer.

Connecting the Temperature Monitoring

1. Strip the cable insulation.

2. Connect the cables to the terminals. Use wire sleeves for this.

3. Tighten the cable screw connections.

18 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 5Electrical Connection

415

230

415

230

415

230

415

Connecting the 230 V Circuit

1. Strip the cable insulation.

2. Connect the cables to the terminals. Use wire sleeves for this. Also connect the protective conductor cable according to the circuit diagram.

3. Tighten the cable screw connections.

Connecting the 415 V Circuit

1. Strip the cable insulation.

2. Connect the cables to the terminals. Use wire sleeves for this.

3. Tighten the cable screw connections.

Closing the Voltage Stabilizer

1. Put on the cover and tighten the screws.

Installation Guide Ukonstanter-IEN103610 19

5Electrical Connection SMA Solar Technology AG

Z120-X120

Z121-X121

5.5 Connecting the Cables in the Sunny Central

Circuit Diagram

For all electrical connections, it is imperative that you use the provided Sunny Central circuit diagram. The exact position of the terminal strip can be determined with the help of the reference designation.

Overview of the Connection Area in the Sunny Central

Figure10:Connection terminal strip in the Sunny Central, examples shown here are for options 2/0 and 5/5

Object Description

A Temperature monitoring

B 230 V circuit

C 415 V circuit

Connection to Terminals

• All connection terminals that are not being used must be screwed tightly.

• Strip 5 mm from the cable insulation.

• Observe the following torques when connecting the cables to the terminals:

M3 0.6 … 0.8 Nm

M4 1.5 … 1.8 Nm

M6 3.2 … 3.7 Nm

20 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 5Electrical Connection

S M

Procedure:

• Insert the cables into the inverter (see inverter documentation).

• Connect the temperature monitoring.

• Connect the 230 V circuit.

• Connect the 415 V circuit.

Connecting the Temperature Monitoring

1. Strip the cable insulation.

2. Insert a screwdriver into the square-shaped opening next to the terminal and open the terminal lock by pressing it.

3. Connect the cables to the terminals. Use wire sleeves for this.

4. Pull the screwdriver out of the terminal.

5. Tighten the cable screw connections.

Installation Guide Ukonstanter-IEN103610 21

5Electrical Connection SMA Solar Technology AG

S M

Connecting the 230 V Circuit

1. Strip the cable insulation.

2. Insert a screwdriver into the square-shaped opening next the terminal and open the terminal lock by pressing it.

3. Connect the cables to the terminals. Use wire sleeves for this.

4. Pull the screwdriver out of the terminal.

5. Tighten the cable screw connections.

Connecting the 415 V Circuit

1. Strip the cable insulation.

2. Insert a screwdriver into the square-shaped opening next the terminal and open the terminal lock by pressing it.

3. Connect the cables to the terminals. Use wire sleeves for this.

4. Pull the screwdriver out of the terminal.

5. Tighten the cable screw connections.

22 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 6Commissioning

6Commissioning

Sunny Central Installation Manual

Follow all instructions in the Sunny Central installation manual.

Requirements for Commissioning

☐ There is a protective conductor connection between the voltage stabilizer and the

Sunny Central.

☐ All screws and cable glands are tight. ☐ The line circuit breaker is working properly.

The voltage stabilizer is started up as soon as the Sunny Central is started up.

Installation Guide Ukonstanter-IEN103610 23

7Maintenance and Service SMA Solar Technology AG

7 Maintenance and Service

Maintenance Intervals

Observe the information in the Sunny Central maintenance guide. The maintenance guide describes all relevant safety notes and maintenance intervals.

Maintenance Work:

• Press the test button on the residual current device in the Sunny Central every 2 years. This ensures that the residual current device is working properly.

☑ The residual current device will trip and the indicator light on the service socket will go out. ✖ The residual current device does not trip or the indicator light on the service socket does not

go out?

• Replace the residual current device.

• Check that the connection cable is securely in place.

• Check the voltage stabilizer for dirt every 6 months.

• Always ensure that the vents are free of dirt or foreign objects.

• Check if the fan is functioning correctly every 12 months.

Service Work:

• Replace the capacitors after expiration of their service life. The service life of the capacitors is limited to 100 000 hrs.

24 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG 8Technical Data

8 Technical Data

Electrical Data

Maximum rated output power P

Nominal input voltage U

Input voltage range of the nominal input

nom

5kVA

415 V

−20%…+15%

voltage

Output voltage U

Output voltage range of the nominal

230 V

−10%…+10%

output voltage

Mechanical Data

Width x height x depth 740 mm x 620 mm x 550 mm

Weight 100 kg

Ambient Conditions

Permissible ambient temperature for installation at altitudes of up to 1 000 m

Permissible ambient temperature for installation at altitudes of up to 2 000 m

Maximum altitude above sea level 2 000 m

Degree of protection IP20

Insulation class ta55/F

−20°C…+50°C

−20°C…+40°C

Installation Guide Ukonstanter-IEN103610 25

9Contact SMA Solar Technology AG

9Contact

If you have technical problems concerning our products, contact the SMA Serviceline. We need the following information in order to provide you with the necessary assistance:

•inverter type

• serial number of inverter

• type and number of PV modules connected

• type of communication

• display information of the inverter

• error or warning number of the inverter

SMA Solar Technology AG

Sonnenallee 1 34266 Niestetal, Germany www.SMA.de

SMA Serviceline

Tel. +49 561 9522 299 Fax +49 561 9522 3299 E‑Mail: SunnyCentral.Service@SMA.de

26 Ukonstanter-IEN103610 Installation Guide

SMA Solar Technology AG Legal Restrictions

The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission.

Exclusion of liability

The general terms and conditions of delivery of SMA Solar Technology AG shall apply. The content of these documents is continually checked and amended, where necessary. However, discrepancies cannot be

excluded. No guarantee is made for the completeness of these documents. The latest version is available online at www.SMA.de or from the usual sales channels.

Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following:

• Damages during transportation

• Improper or inappropriate use of the product

• Operating the product in an unintended environment

• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location

• Ignoring safety warnings and instructions contained in all documents relevant to the product

• Operating the product under incorrect safety or protection conditions

• Altering the product or supplied software without authority

• The product malfunctions due to operating attached or neighboring devices beyond statutory limit values

• In case of unforeseen calamity or force majeure The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions:

• SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.

• Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements of the manufacturer.

SMA Factory Warranty

The current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be downloaded or are available on paper from the usual sales channels if required.

Trademarks

All trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand is not a registered trademark.

The Bluetooth Solar Technology AG is under license.

SMA Solar Technology AG

wor d mark an d logos are registe red trademar ks owned by Bluetoo th SIG, Inc . and any use o f such marks by SMA

Installation Guide Ukonstanter-IEN103610 27

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SMA VOLTAGE STABILIZER User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Notes on this Manual

2Safety

2.1 Appropriate Usage

2.2 Safety Instructions

2.3 Personnel

3Delivery

3.1 Check for Transport Damage

3.2 Scope of Supply

4Mounting

4.1 Choosing an Installation Site

4.2 Mounting the Voltage Stabilizer

5 Electrical Connection

5.1 Overview of External Components for Internal Power Supply

5.2 Line Circuit Breaker

5.3 Inserting the Cables

5.4 Connecting the Cables Inside the Voltage Stabilizer

5.5 Connecting the Cables in the Sunny Central

6Commissioning

7 Maintenance and Service

8 Technical Data

9Contact