SMA MULTICLUSTER BOX 36 User Manual

Operating Manual

MULTICLUSTER BOX 36

MC_BOX_36-BE-en-20 | Version 2.0 ENGLISH

Legal Provisions SMA Solar Technology AG

Legal Provisions

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.

SMA Factory Warranty

The current warranty conditions come enclosed with your device. These are also available online at www.SMA-Solar.com and can be downloaded and 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 SMA Solar Technology AG is under license.

QR Code

SMA Solar Technology AG

Sonnenallee 1 34266 Niestetal Germany

Tel. +49 561 9522-0 Fax +49 561 9522-100 www.SMA.de E-mail: info@SMA.de

word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by

is a registered trademark of DENSO WAVE INCORPORATED.

2 MC_BOX_36-BE-en-20 Operating Manual

SMA Solar Technology AG Table of contents

Table of contents

1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Skills of Qualified Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Additionally Required Materials. . . . . . . . . . . . . . . . . . . . . . . . 11

5 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.1 Multicluster Box 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.2 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1 Choosing a Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.2 Preparing the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.3 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3.1 Transport Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3.2 Attaching the Lifting Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3.3 Transporting and Mounting the Multicluster Box . . . . . . . . . . . . . . . 18

7 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.1 Overview of the Connection Area. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.1.1 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7.1.2 Cable Entries in the Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.1.3 Grounding Busbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.2 Opening the Multicluster Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.3 Removing Protection against Contact . . . . . . . . . . . . . . . . . . . . . . . . 23

7.4 Inserting and Preparing the Connection Cables . . . . . . . . . . . . . . . . 24

7.5 Connecting the Generator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7.6 Connecting the Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.7 Connecting the PV Plant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.8 Connecting the Sunny Island Inverters. . . . . . . . . . . . . . . . . . . . . . . . 31

Operating Manual MC_BOX_36-BE-en-20 3

Table of contents SMA Solar Technology AG

7.9 Grounding the Multicluster System . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.10 Connecting the Control, Measuring and Data Cables . . . . . . . . . . . 34

7.11 Mounting the Contact Hazard Protection Cover. . . . . . . . . . . . . . . . 35

7.12 Protecting the Door Seals from Freezing . . . . . . . . . . . . . . . . . . . . . . 35

7.13 Mounting the Kick Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8 Commissioning the Multicluster Box. . . . . . . . . . . . . . . . . . . . . 36

9 Disconnecting the Multicluster System from

Voltage Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

11 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.1 Disassembling the Multicluster Box . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.2 Storing the Multicluster Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11.3 Disposing of the Multicluster Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

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SMA Solar Technology AG 1 Information on this Document

1 Information on this Document

Validity

This document is valid for the device type MC-BOX-36.3-11 (Multicluster Box 36).

Target Group

This document is intended for qualified persons. Only persons with the appropriate skills are allowed to perform the tasks described in this document (see Section2.2 "Skills of Qualified Persons", page8).

Additional Information

You can find more information on the SMA multicluster technology and the configurable parameters of the Sunny Island in the documentation of the Sunny Island 5048 / 6.0H / 8.0H.

Symbols

Symbol Explanation

Indicates a hazardous situation which, if not avoided, will result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury

Indicates a situation which, if not avoided, can result in property damage

Information that is important for a specific topic or goal, but is not

safety-relevant ☐ Indicates a requirement for meeting a specific goal ☑ Desired result ✖ A problem that might occur

Nomenclature

Complete designation Designation in this document

Multicluster Box 36 Multicluster Box Sunny Island multicluster system Multicluster system

Operating Manual MC_BOX_36-BE-en-20 5

1 Information on this Document SMA Solar Technology AG

Abbreviations

Abbreviation Designation Explanation

AC Alternating Current DC Direct Current EMC Electromagnetic Compatibility MSL Mean Sea Level PV Photovoltaics SOC State of Charge State of charge of the battery SOH State of Health Battery capacity available for consumption

6 MC_BOX_36-BE-en-20 Operating Manual

SMA Solar Technology AG 2 Safety

2 Safety

2.1 Intended Use

The Multicluster Box is a component of the SMA multicluster technology for off-grid systems. The Multicluster Box is a main AC distribution board to which you can connect up to twelve three-phase clusters. Each cluster consists of three Sunny Island inverters of the same device type with parallel DC-side connection.

Figure1: Circuitry principle

Connection requirements

The Multicluster Box is designed for connection to TN systems. The Multicluster Box must be grounded prior to commissioning (see Section7.9, page33).

Operating Manual MC_BOX_36-BE-en-20 7

2 Safety SMA Solar Technology AG

Do not exceed the maximum AC connection power of the Multicluster Box. Only operate the Multicluster Box in conjunction with Sunny Island inverters of type Sunny Island

5048 / 6.0H / 8.0H. Always take the maximum AC connection power and the permitted Sunny Island combinations into account.

Permitted Sunny Island combinations

• Only Sunny Island inverters of the same device type are permitted to operate in one cluster.

• Different clusters may be equipped with different device types.

The Multicluster Box is designed for use at altitudes of up to 2,000 m above mean sea level. If you wish to use the Multicluster Box at altitudes above 2,000 m, contact SMA Solar Technology AG (see Section13 "Contact", page44).

The product is designed for indoor use only. The product is designed for EMC environment A* . In EMC environment B*, the product can cause

undesired electromagnetic interference.

• If the product is operated in EMC environment B, take protective measures against electromagnetic interference in accordance with the locally applicable standards and directives.

For safety reasons, it is not permitted to modify the product or install components that are not explicitly recommended or distributed by SMA Solar Technology AG for this product.

The type label must be permanently attached to the product. Use this product only in accordance with the enclosed documentation and with the local standards

and directives. Any other application may cause personal injury or property damage. The enclosed documentation is an integral part of this product.

• Read and observe the documentation.

• Keep the documentation in a convenient place for future reference.

2.2 Skills of Qualified Persons

The tasks described in this document must be performed by qualified persons only. Qualified persons must have the following skills:

• Training in off-grid systems from SMA Solar Technology AG

• Training in how to deal with the dangers and risks associated with installing and operating electrical devices and batteries

• Training in the installation and commissioning of electrical devices

• Knowledge of and adherence to the local standards and directives

• Knowledge of and adherence to this document and all safety precautions

* in accordance with IEC 61439-1:2011

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SMA Solar Technology AG 2 Safety

2.3 Safety Precautions

This section contains safety precautions that must be observed at all times when working on or with the product.

To pre ven t pe rsona l in jur y or prope rty dam age and to ens ure lon g-term operation of the product, read this section carefully and follow all safety precautions at all times.

Danger to life due to electric shock

High voltages are present in the Multicluster Box. Touching live components results in death or serious injury due to electric shock.

• Disconnect the Multicluster Box from all voltage sources before carrying out any work.

• Switch off all loads.

• Switch off the master of the main cluster.

• Disconnect all Sunny Island inverters in the Multicluster Box and secure against reconnection.

• Disconnect the PV main distribution board and secure against reconnection.

• Shut down the generator and secure against unintentional reconnection.

Operating Manual MC_BOX_36-BE-en-20 9

3 Scope of Delivery SMA Solar Technology AG

3 Scope of Delivery

Check the scope of delivery for completeness and any external damage. Contact your distributor if the scope of delivery is incomplete or damaged.

Figure2: Components included in the scope of delivery

Object Number Description

A1Multicluster Box B 1 Switch cabinet key C4Lifting lug D 1 Data cable: 10 m, black E 3 Control and measuring cable: 10 m, red F 15 Cable clamp with counter sleeve (26 mm to 30 mm) G 3 LV/HRC fuse link 500 A H 1 Operating manual I 1 Document "Installation - Circuitry Overview" K 2 Set with adhesive web for marking the cables

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SMA Solar Technology AG 4 Additionally Required Materials

4 Additionally Required Materials

Material Number of units Explanation

Screws and screw anchors 4 For securing the base of the

Multicluster Box

Terminal lugs M12 12 For connecting the generator, PV plant

and loads

Connection cables, installation and cable-laying material

Distribution board with protection units

LV/HRC fuse link, as required 6 The fuse links for the generator and the

Cable tie ‒ To retain the Sunny Island connection

Agent to counteract freeze damage to seals (e.g., talcum, petroleum jelly or wax)

‒ For connecting the generator, PV plant

and loads

2 One distribution board each for the PV

plant and the loads

load s must be dimensi oned to mat ch the system. 500 A LV/HRC size 3 fuse links are installed in the fuse switch by default.

cables

‒ To protect door seals from freezing

Operating Manual MC_BOX_36-BE-en-20 11

5 Product Description SMA Solar Technology AG

5 Product Description

5.1 Multicluster Box 36

Functions of the Multicluster Box:

• Main AC distribution board for the Sunny Island inverters, one generator and one PV plant

•Load shedding

• Automatic bypass for the generator

• Active anti-islanding

• Reverse current monitoring

5.2 Type Label

The type label clearly identifies the product. The type label is located on the right-hand outside of the enclosure. You will find the following information on the type label:

• Address of SMA Solar Technology AG

• Date of manufacture (Date)

• Standards underlying the CE marking

• Device type (Type)

• Serial number of the Multicluster Box (Serial No.)

• Article number (Art No.)

• Device-specific characteristics

Yo u wi ll r equ ire the inf ormat ion on t he t ype lab el t o us e th e product safely and when seeking customer support from the SMA Service Line.

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SMA Solar Technology AG 5 Product Description

Symbols on the Type Label

Symbol Explanation

Danger to life due to high voltages The product operates at high voltages. All work on the product must be

carried out by qualified persons only. Risk of burns due to hot surfaces

The product can get hot during operation. Avoid contact during operation. Allow the product to cool down sufficiently before carrying out any work. Wear personal protective equipment such as safety gloves.

Observe the documentation. Observe all documentation that is supplied with the product.

CE marking The product complies with the requirements of the applicable EU

directives. WEEE designation

Do not dispose of the product together with the household waste but in accordance with the locally applicable disposal regulations for electronic waste.

Degree of protection The product is protected against interior dust deposits and splash water

from all angles.

Operating Manual MC_BOX_36-BE-en-20 13

6 Installation SMA Solar Technology AG

6 Installation

6.1 Choosing a Mounting Location

Requirements for the mounting location:

Danger to life due to fire or explosion

Despite careful construction, electronic devices can cause fires if they are not installed properly. This may result in death or serious injury.

• Do not install the Multicluster Box on flammable construction materials.

• Do not store any highly flammable materials or products in the vicinity of the Multicluster Box.

• Do not install the Multicluster Box in potentially explosive areas.

Optimum mounting location

The ambient temperature of the Multicluster Box influences the tripping threshold of the circuit breakers for the Sunny Island inverters. The higher the temperature, the earlier the circuit breakers will trip. At high ambient temperatures, the derating function of the Sunny Island inverters inhibits premature tripping of the circuit breakers.

• To ensure optimum operation, mount and install the Multicluster Box and the Sunny Island inverters at the same location.

☐ A firm, even foundation, e.g., a concrete surface, must be available for mounting. ☐ The mounting location must be suitable for the weight and dimensions of the Multicluster Box

(see Section12 "Technical Data", page41).

☐ The mounting location must be clear and safely accessible at all times without any need for

auxiliary equipment. ☐ The mounting location must not hinder access to disconnection devices. ☐ All local requirements concerning minimum passage widths and escape routes must be

observed. ☐ Climatic conditions must be met (see Section12 "Technical Data", page41). ☐ The mounting location must be below 2,000 m above MSL. For altitudes over 2,000 m above

MSL, contact the SMA Service Line.

14 MC_BOX_36-BE-en-20 Operating Manual

SMA Solar Technology AG 6 Installation

Observe minimum clearances:

Figure3: Minimum clearances

Observe the permitted mounting position:

Figure4: Permitted and prohibited mounting positions

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