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Summary of Contents for SMA MULTICLUSTER-BOX 12
- Page 1 Operating manual MULTICLUSTER-BOX 12 S U N N Y I M U L S L A N T I C L U S T E R B O X ENGLISH MC-BOX-12-3-20-BE-en-13 | Version 1.3...
- Page 2 Legal Provisions The information contained in these documents is the property of SMA Solar Technology AG. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.
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Page 3: Table Of Contents
SMA Solar Technology AG Table of Contents Table of Contents Information on this Document..................... Validity ................................Target Group ..............................Levels of Warning Messages.......................... Symbols in the Document..........................Typographies in the Document ........................Designation in the document .......................... Additional Information............................. Safety ............................ - Page 4 Table of Contents SMA Solar Technology AG Removing the Protective Cover ........................32 Inserting Power and Control Cables ......................33 Inserting Data Cables............................34 Connecting Power Cables to Spring-Cage Terminals ................... 35 Connecting Control Cables to Spring-Cage Terminals ................. 36 Mounting the Protective Cover ........................
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Page 5: Information On This Document
1 Information on this Document 1 Information on this Document Validity This document is valid for: • MC-BOX-12.3-20 (Multicluster-Box 12) Target Group The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills: •... -
Page 6: Typographies In The Document
Multicluster-Box NA-Box 12 NA-Box Sunny Island 6.0H / 8.0H Sunny Island, battery inverter Additional Information For more information, please go to www.SMA-Solar.com. Title and information content Type of information SUNNY ISLAND 4.0M / 6.0H / 8.0H Operating manual NA-BOX 12 Operating manual... -
Page 7: Safety
Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such changes. -
Page 8: Important Safety Instructions
This document does not replace and is not intended to replace any local, state, provincial, federal or national laws, regulations or codes applicable to the installation, electrical safety and use of the product. SMA Solar Technology AG assumes no responsibility for the compliance or non-compliance with such laws or codes in connection with the installation of the product. - Page 9 SMA Solar Technology AG 2 Safety NOTICE Damage to the product due to sand, dust and moisture ingress Sand, dust and moisture penetration can damage the product and impair its functionality. • Do not open the product during a dust storm or precipitation.
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Page 10: Scope Of Delivery
3 Scope of Delivery SMA Solar Technology AG 3 Scope of Delivery Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope of delivery is incomplete or damaged. Figure 1: Components included in the scope of delivery... -
Page 11: Product Overview
4 Product Overview Product Description The Multicluster-Box is an SMA multicluster technology device for off-grid systems, battery-backup systems, and systems for increased self-consumption. The Multicluster-Box is a main AC distribution board to which you can connect up to four clusters. Each three-phase cluster is made up of three DC-side, parallel-switched Sunny Island 6.0H / 8.0H inverters with firmware version 3.5 or higher. -
Page 12: Symbols On The Product
4 Product Overview SMA Solar Technology AG Position Designation Residual-current device Protects against electric shock and is always used in addition to existing protective measures such as insulation or protective grounding. As soon as a dangerous touch voltage occurs, the residual-current device switches the loads off at all poles. This is achieved by means of a summation current transformer in the residual-current device which detects the electric currents in the conductors L1, L2, L3, and N. -
Page 13: Mc-Box-12-3-20-Be-En
SMA Solar Technology AG 4 Product Overview With TN-S, TN-C-S, and TT systems, the neutral conductor must be grounded for protection against indirect contact with live components. The following conditions apply to grounding the neutral conductor in the multicluster system: •... -
Page 14: System Structure
4 Product Overview SMA Solar Technology AG System Structure PV MODULES PV INVERTERS PV main distribution box (not included in the delivery) NA BOX / MULTICLUSTER BOX GRID CONNECT (Main AC distribution board) LOAD UTILITY GRID Load contactor GENERATOR Generator contactor... -
Page 15: Mounting
SMA Solar Technology AG 5 Mounting 5 Mounting Requirements for Mounting WARNING Danger to life due to fire or explosion Despite careful construction, electrical devices can cause fires. • Do not mount the product in areas containing highly flammable materials or gases. -
Page 16: Preparing The Mounting Location
5 Mounting SMA Solar Technology AG Recommended clearances: Figure 5: Recommended clearances (dimensions in mm) ☐ There must be sufficient space at the mounting location to ensure compliance with the recommended clearances. ☐ There must be a distance of at least 300 mm between the Multicluster-Box and the Grid-Connect-Box or NA-Box. -
Page 17: Transporting And Mounting The Product
SMA Solar Technology AG 5 Mounting Transporting and Mounting the Product WARNING Danger to life if raised or suspended loads tip over, fall or sway Vibrations or careless or hasty lifting and transportation may cause the product to tip over or fall. This can result in death or serious injury. - Page 18 5 Mounting SMA Solar Technology AG CAUTION Risk of injury if the Multicluster-Box tips over The Multicluster-Box is heavy and may tip over if not properly fastened to the support surface. This can result in crushing injuries. • Attach the product to the support surface using four suitable screws.
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Page 19: Electrical Connection
SMA Solar Technology AG 6 Electrical Connection 6 Electrical Connection Overview of the Connection Area 6.1.1 Interior View Figure 7: Components and terminals inside the Multicluster-Box Position Designation Fuse switch-disconnector F101 for LV/HRC size 1 fuse links of the generator terminal... -
Page 20: View From Below
6 Electrical Connection SMA Solar Technology AG Position Designation Spring-cage terminals X106 to X113 for connecting the control cables of the Sunny Island invert- ers, battery fuse, Grid-Connect-Box or NA-Box Grounding busbar X100 for connecting the grounding conductors of the generator, the loads, and... -
Page 21: Installing The Multicluster-Box Without Grid-Connect-Box Or Na-Box
SMA Solar Technology AG 6 Electrical Connection Installing the Multicluster-Box without Grid-Connect-Box or NA-Box If the Multicluster Box is installed without Grid Connect Box or NA Box, the terminals of the grounding contactor and the generator contactor must be equipped with a jumper wire. -
Page 22: Utility Grid Connection
6 Electrical Connection SMA Solar Technology AG 3. Connect the neutral conductor to the spring-cage terminal N at terminal X102:4 (see Section 9.4, page 35). 4. Connect the line conductors to the spring-cage terminals L1, L2, and L3 at the terminals X102:1 to X102:3. -
Page 23: Connecting The Loads
SMA Solar Technology AG 6 Electrical Connection Cable requirements: ☐ Conductor material: copper ☐ Conductor cross-section: 50 mm² to 150 mm² ☐ The power cables must be ground-fault and short-circuit protected. ☐ The AC conductors and DC conductors must always be routed in separate cables. -
Page 24: Connecting The Pv System
6 Electrical Connection SMA Solar Technology AG 4. Connect the line conductors to the spring-cage terminals L1, L2, and L3 at the terminals X103:1 to X103:3. 5. Ensure that a right-hand rotating magnetic field is present at the load terminal. -
Page 25: Connecting The Sunny Island
SMA Solar Technology AG 6 Electrical Connection Connecting the Sunny Island L1 L2 L3 L1 L2 L3 L1 L2 L3 L1 L2 L3 Main Cluster Extension Cluster 1 Extension Cluster 2 Extension Cluster 3 Figure 10: Overview of the spring-cage terminals for connecting the power cables of the Sunny Island inverters... -
Page 26: Connecting The Control Cables
6 Electrical Connection SMA Solar Technology AG Procedure: 1. If connecting a generator to the multicluster system, the neutral point of the generator must be grounded. All standards and directives applicable to the installation site must be observed. 2. If the utility grid is only connected to the multicluster system, the neutral point of the utility grid must be grounded. -
Page 27: Connecting The Control Cables Of The Sunny Island Inverters
SMA Solar Technology AG 6 Electrical Connection 6.9.2 Connecting the Control Cables of the Sunny Island Inverters The Sunny Island inverters of the main cluster must be connected to the Multicluster-Box via several control cables. These control cables transmit measurement and control signals between the Sunny Island inverters of the main cluster and the Multicluster-Box. -
Page 28: Connecting The Control Cables To The Na-Box
6 Electrical Connection SMA Solar Technology AG • X110:1 and X110:2: block of grounding contactor of Multicluster-Box • X110:4 and X110:5: feedback from AC contactor of Grid-Connect-Box • X111:1 to X111:4: voltage measurement of Grid-Connect-Box • X111:6 and X111:7: block of generator contactor of Multicluster-Box •... - Page 29 SMA Solar Technology AG 6 Electrical Connection Requirements: ☐ The total length of the communication bus must not exceed 30 m. Keep in mind that the communication bus can connect several nodes. ☐ Make sure that the data cables are always routed separately from the power cables.
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Page 30: Preparing For Commissioning
7 Preparing for Commissioning SMA Solar Technology AG 7 Preparing for Commissioning Load shedding in the first two operating hours The state of charge (SOC) recorded by battery management and the available battery capacity (SOH) will deviate strongly from the actual values of SOC and SOH for a newly connected battery. During operation, the values recorded by battery management will gradually approach the real values. -
Page 31: Disconnect From Voltage Sources
SMA Solar Technology AG 8 Disconnect from voltage sources 8 Disconnect from voltage sources CAUTION Risk of burns due to hot components Some components and terminals inside the product can become hot during operation. Touching hot components or terminals can result in burn injuries. -
Page 32: Periodic Actions
9 Periodic Actions SMA Solar Technology AG 9 Periodic Actions Removing the Protective Cover DANGER Danger to life due to electric shock when live components or cables are touched High voltages are present in the conductive components or cables of the product. Touching live parts and cables results in death or lethal injuries due to electric shock. -
Page 33: Inserting Power And Control Cables
SMA Solar Technology AG 9 Periodic Actions 2. Remove the protective cover forwards. 3. Retain the protective cover and the fastening screws for later use. In this way, the protective cover can be mounted at a later time and thus the Multicluster-Box recommissioned. -
Page 34: Inserting Data Cables
9 Periodic Actions SMA Solar Technology AG • Insert each cable through the membrane of the selected enclosure opening into the Multicluster-Box. Ensure that the cable is tightly enclosed by the membrane. • Strip the insulation of each cable . -
Page 35: Connecting Power Cables To Spring-Cage Terminals
SMA Solar Technology AG 9 Periodic Actions 5. Lay the data cables into the half with the T-shaped fastening pieces, and secure with cable ties. Ensure sufficient cable length from the cable feed-through to the desired connection point. 6. Screw the two halves back together. Fasten screws hand-tight. -
Page 36: Connecting Control Cables To Spring-Cage Terminals
9 Periodic Actions SMA Solar Technology AG 2. In the clamping contact, press the screwdriver upwards in two stages as far as the stop. This pretensions the spring of the spring- click cage terminal. The spring-cage terminal emits an audible click when the clamping contact is sufficiently pretensioned. -
Page 37: Mounting The Protective Cover
SMA Solar Technology AG 9 Periodic Actions 2. Insert the stripped insulated conductor into the spring-cage terminal until it reaches the stop. Ensure that no insulation is trapped in the terminal. 3. Pull the screwdriver out of the clamping contact. - Page 38 9 Periodic Actions SMA Solar Technology AG 2. Tighten all fastening screws (TX30, torque: 4 Nm). MC-BOX-12-3-20-BE-en-13 Operating manual...
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Page 39: Maintenance
SMA Solar Technology AG 10 Maintenance 10 Maintenance 10.1 Inspection of Residual-Current Devices Inspection interval for residual-current devices The inspection interval for residual-current devices depends on the prevailing operating temperature. • At prevailing operating temperatures of up to 40°C: inspect every 6 months. -
Page 40: Checking The Surge Arresters
10 Maintenance SMA Solar Technology AG Procedure: 1. Stop the multicluster system at the master of the main cluster (see Sunny Island operating manual). 2. On the residual-current device F141 press the [TEST] button. 3. If the residual-current device does not trip after pressing the button, perform the following steps: •... -
Page 41: General Maintenance Work
• If the product is subject to adverse ambient conditions, a reduction of the maintenance intervals is recommended. Above all, the intervals between cleaning work and corrosion protection should be reduced. • SMA recommends a monthly optical inspection to determine the maintenance requirement. Required maintenance materials and tools Only those consumables and maintenance materials not normally included in the standard equipment of an electrically qualified person are listed. - Page 42 10 Maintenance SMA Solar Technology AG 8. Check all insulated conductors, terminals and fuse elements in the product for discoloration or changes in the appearance of the insulation. 9. If any insulated conductors, terminals or fuse elements in the product are discolored or have changed in appearance, contact Service (see Section 14, page 51).
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Page 43: Decommissioning The Product
SMA Solar Technology AG 11 Decommissioning the Product 11 Decommissioning the Product DANGER Danger to life due to electric shock when live components or cables are touched High voltages are present in the conductive components or cables of the product. Touching live parts and cables results in death or lethal injuries due to electric shock. -
Page 44: Technical Data
12 Technical Data SMA Solar Technology AG 12 Technical Data Connection of loads Number of terminals 1 x three-phase Rated power 138 kW Rated grid voltage between L and N 230 V Rated grid voltage between L1 and L2 400 V AC voltage range between L1 and N 172.5 V to 265 V... - Page 45 SMA Solar Technology AG 12 Technical Data Rated operating voltage between L1 and L2 400 V Rated grid input power 138 kW AC input current 3 x 200 A Terminals for connection N, PE, L1, L2, L3 Spring-cage terminals Maximum connectable conductor cross-section 150 mm²...
- Page 46 12 Technical Data SMA Solar Technology AG Maximum connectable conductor cross-section 150 mm² Minimum connectable conductor cross-section 50 mm² Unaffected short-circuit current / relative rated short-circuit current at the terminals ≤ 10 kA Maximum permitted rated current of the back-up fuse 200 A gG Short-circuit current breaking capacity of the back-up fuse ≥25 kA...
- Page 47 SMA Solar Technology AG 12 Technical Data DC auxiliary circuit via X113:3 and X113:4: maximum permitted rated current 0.5A mT of the back-up fuse DC auxiliary circuit via X113:3 and X113:4: forward current of the back-up ≤ 10 kA fuse...
- Page 48 12 Technical Data SMA Solar Technology AG Protection class (as per IEC 417) Overvoltage category (as per IEC 60664) Overvoltage category 3 EMC environment, emission (as per IEC 61439-1:2011) Electromagnetic interference, environment B (EMC directive, Article 5 – Annex I.1.b) EMC environment, interference immunity (as per IEC 61439-1:2011)
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Page 49: Multicluster Technology Terms
SMA Solar Technology AG 13 Multicluster Technology Terms 13 Multicluster Technology Terms Stand-alone grid A stand-alone grid is a utility grid which is independent of the public energy supply. A stand-alone grid with Sunny Island is designed as a single-phase or three-phase AC grid which integrates various kinds of power generators (e.g., PV systems, small wind turbine systems and diesel generators). - Page 50 13 Multicluster Technology Terms SMA Solar Technology AG • Communicating with the Multicluster-Box If the master of the main cluster stops operation, the entire multicluster system shuts down. If a diesel generator is integrated in the stand-alone grid, it will take over the power supply to the loads in this case.
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Page 51: Contact
SMA Solar Technology AG 14 Contact 14 Contact If you have technical problems with our products, please contact the SMA Service Line. The following data is required in order to provide you with the necessary assistance: • Box – Device type – Serial number •... - Page 52 14 Contact SMA Solar Technology AG France SMA France S.A.S. Ελλάδα SMA Service Partner AKTOR FM. Lyon Κύπρος Αθήνα +33 472 22 97 00 +30 210 8184550 SMA Online Service Center : SMA Online Service Center: www.SMA-Service.com www.SMA-Service.com España SMA Ibérica Tecnología Solar, S.L.U.
- Page 54 www.SMA-Solar.com...
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