SMA NA-BOX 12 Operating Manual
  1. Manuals
  2. Brands
  3. SMA Manuals
  4. Inverter
  5. NA-BOX 12
  6. Operating manual
SMA NA-BOX 12 Operating Manual

SMA NA-BOX 12 Operating Manual

Hide thumbs Also See for NA-BOX 12:
Table of Contents

Advertisement

Quick Links

Operating manual
NA-BOX 12
S U N
N Y I
S L A N
D
ENGLISH
NA-BOX-12-3-20-BE-en-12 | Version 1.2

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NA-BOX 12 and is the answer not in the manual?

Questions and answers

Related Manuals for SMA NA-BOX 12

Summary of Contents for SMA NA-BOX 12

  • Page 1 Operating manual NA-BOX 12 S U N N Y I S L A N ENGLISH NA-BOX-12-3-20-BE-en-12 | Version 1.2...
  • 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.

  • 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 12 Technical Data ..........................35 13 Contact ............................38 NA-BOX-12-3-20-BE-en-12 Operating manual...

  • Page 5: Information On This Document

    1 Information on this Document 1 Information on this Document Validity This document is valid for: • NA-BOX-12.3-20 (NA-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 12 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 MULTICLUSTER-BOX 12 Installation – circuitry overview MULTICLUSTER-BOX 12 Operating manual...

  • Page 7: Safety

    2 Safety Intended Use The NA-Box is an automatic transfer switch and enables the operation of an SMA multicluster system on a utility grid in accordance with the VDE-AR-N 4105 application regulations. Do not exceed the maximum AC connection power of the NA-Box. Cables with copper conductors must be used for the installation.
  • Page 8 2 Safety SMA Solar Technology AG 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 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.

  • 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 NA-Box is an automatic transfer switch. It enables the operation of an SMA multicluster system on a utility grid in accordance with the VDE-AR-N 4105 application regulations. In the event of a grid failure, the NA-Box disconnects the SMA multicluster system from the utility grid via a redundant tie switch.

  • Page 12: Symbols On The Product

    4 Product Overview SMA Solar Technology AG Position Designation Test button for the tie switch The tripping mechanism of the tie switch must be tested regularly for correct operation (see Section 10.3, page 30). Fuse holder 1 A Used as receptacles for cylindrical thermal fuses (1 A, tripping characteristic gG). The thermal fuses protect the connected conductors from excessive heat build-up due to overload or short circuits.

  • Page 13: System Structure

    SMA Solar Technology AG 4 Product Overview System Structure PV MODULES PV INVERTERS PV main distribution box (not included in the delivery) MULTICLUSTER BOX (Main AC distribution board) NA-BOX UTILITY GRID LOAD Load contactor GENERATOR Generator contactor SUNNY ISLAND BATFUSE BATTERY Figure 3: Circuitry principle of a multicluster system –...

  • Page 14: Mounting

    5 Mounting SMA Solar Technology AG 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 15: Preparing The Mounting Location

    SMA Solar Technology AG 5 Mounting 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 NA-Box and the Multicluster-Box. This will ensure adequate heat dissipation for each product.

  • Page 16: Transporting And Mounting The Product

    5 Mounting SMA Solar Technology AG 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 17 SMA Solar Technology AG 5 Mounting 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.

  • Page 18: Electrical Connection

    6 Electrical Connection SMA Solar Technology AG 6 Electrical Connection Overview of the Connection Area 6.1.1 Interior View Figure 7: Overview of the connection area Position Designation Terminal X210, X211 with spring-cage terminals to connect the control cables De-energized surge arrester...

  • Page 19: View From Below

    SMA Solar Technology AG 6 Electrical Connection 6.1.2 View from Below Figure 8: Position of the enclosure openings Position Designation Enclosure openings for the control cables Enclosure openings for the power cables of the Multicluster-Box Enclosure openings for the power cables of the utility grid...

  • Page 20: Connecting Control And Measuring Cables Of The Multicluster-Box

    6 Electrical Connection SMA Solar Technology AG 2. Connect the grounding conductor to the spring-cage terminal PE at terminal X201:5 (see Section 9.3, page 26). 3. Connect the neutral conductor to the spring-cage terminal N at terminal X201:4 . 4. Connect the line conductors to the spring-cage terminals L1, L2, and L3 at the terminals X201:1-3.

  • Page 21: Mounting The Kick Plates

    SMA Solar Technology AG 6 Electrical Connection • X210:1,2: Multicluster-Box grounding contactor interlock • X210:4,5: NA-Box AC contactor feedback • X211:1-4: NA-Box voltage measurement • X211:6,7: Multicluster-Box generator contactor interlock • X211:8,9: NA-Box AC contactor 2 interlock • X211:11,12: NA-Box AC contactor 1 interlock...

  • Page 22: Preparing For Commissioning

    7 Preparing for Commissioning SMA Solar Technology AG 7 Preparing for Commissioning CAUTION Injury to persons or property damage due to unauthorized access to the grid and PV system protection of the NA-Box Unauthorized access or incorrect settings on the grid and PV system protection device in the NA-Box can cause grid failures, yield losses, damage to the multicluster system or the NA-Box and injuries to persons.

  • Page 23: 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 24: 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 25: 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 NA-Box recommissioned.

  • Page 26: Connecting Power Cables To Spring-Cage Terminals

    9 Periodic Actions SMA Solar Technology AG • Strip the insulation of each cable . Cable typ Stripping length Power cable 40 mm Control cable 20 mm 4. Ensure that the seal at the edge of the base plate is firmly attached.

  • Page 27: Connecting Control Cables To Spring-Cage Terminals

    SMA Solar Technology AG 9 Periodic Actions 4. Press down the screwdriver in the clamping contact and pull it out of the contact. click 5. Make sure that the insulated conductor is securely attached and that no insulation is trapped.

  • Page 28: Mounting The Protective Cover

    9 Periodic Actions SMA Solar Technology AG Mounting the Protective Cover 1. Insert the protective cover into the product. 2. Tighten all fastening screws (TX30, torque: 4 Nm). NA-BOX-12-3-20-BE-en-12 Operating manual...

  • Page 29: 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 30: Checking The Surge Arresters

    10 Maintenance SMA Solar Technology AG • Disconnect the NA-Box and multicluster system from voltage sources (see Section 8, page 23) • Contact the Service (see Section 13, page 38). This will trigger the requisite spare parts order. 4. If the residual-current device has tripped, wait at least five seconds.
  • Page 31 SMA Solar Technology AG 10 Maintenance To test the functionality of the tie switch and therefore to ensure that islanding detection is functioning, the tripping function of the tie switch must tested every six months. Both impact chains must be tested since the islanding detection function is redundant.

  • Page 32: 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 33 SMA Solar Technology AG 10 Maintenance 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 13, page 38).

  • Page 34: Decommissioning The Product

    11 Decommissioning the Product SMA Solar Technology AG 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 35: Technical Data

    SMA Solar Technology AG 12 Technical Data 12 Technical Data Connection to utility grid Number of terminals 1 x three-phase Rated grid input power 138 kW Rated operating voltage between L and N 230 V Rated operating voltage between L1 and L2 400 V...
  • Page 36 12 Technical Data SMA Solar Technology AG Auxiliary electric circuits Rated operating voltage of the AC auxiliary circuits 230 V Rated operating voltage of the DC auxiliary circuits 48 V Fuse 10x38 cylinder fuse Maximum permitted fuse rating for F223 to F227 1 A gG...
  • Page 37 SMA Solar Technology AG 12 Technical Data Enclosure degree of protection (as per IEC 60529) IP55 Degree of protection with open enclosure door (as per IEC 60529) IP20B Pollution degree at the mounting location (as per IEC 61439-1:2011) Pollution degree in the enclosure (micro-environment) Protection class (as per IEC 417)

  • Page 38: Contact

    13 Contact SMA Solar Technology AG 13 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 39 SMA Solar Technology AG 13 Contact 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 40 www.SMA-Solar.com...

Table of Contents