SMA SC 500CP-US User Manual
Installation Manual
SUNNY CENTRAL 500CP-US/CA / 500CP-US/CA 600V /
630CP-US/CA / 720CP-US/CA / 750CP-US/CA /
800CP-US/CA / 850CP-US/CA / 900CP-US/CA
SCCP-US-IA-US_en-41 | 98-118300.02 | Version 4.1 AMERICAN ENGLISH
Legal Provisions SMA America, LLC
Legal Provisions
Copyright © 2014 SMA America,LLC. All rights reserved.
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 America, LLC.
Neither SMA America,LLC nor SMA Solar Technology Canada Inc. makes representations, express or implied, with
respect to this documentation or any of the equipment and/or software it may describe, including (with no limitation) any
implied warranties of utility, merchantability, or fitness for any particular purpose. All such warranties are expressly
disclaimed. Neither SMA America,LLC nor its distributors or dealers nor SMA Solar Technology Canada Inc. nor its
distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.
(The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may
not apply.)
Specifications are subject to change without notice. Every attempt has been made to make this document complete,
accurate and up-to-date. Readers are cautioned, however, that SMAAmerica,LLC and SMA Solar Technology Canada
Inc. reserve the right to make changes without notice and shall not be responsible for any damages, including indirect,
incidental or consequential damages, caused by reliance on the material presented, including, but not limited to,
omissions, typographical errors, arithmetical errors or listing errors in the content material.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. A lack of identification does not mean that a
product or symbol is not trademarked.
®
The Bluetooth
by SMA America, LLC and SMA Solar Technology Canada Inc. is under license.
Modbus
QR Code
®
Phillips
®
Torx
is a registered trademark of Acument Global Technologies, Inc.
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of these marks
®
is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.
®
is a registered trademark of DENSO WAVE INCORPORATED.
and Pozidriv® are registered trademarks of Phillips Screw Company.
SMA America, LLC
3801 N. Havana Street
Denver, CO 80239 U.S.A.
SMA Solar Technology Canada Inc.
2425 Matheson Blvd. E
7th Floor
Mississauga, ON L4W 5K4
Canada
2 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC Important Safety Instructions
'$1*(5
:$5 1,1*
&$87,21
/05*$&
Important Safety Instructions
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the following products:
• SC 500CP-US-10 (Sunny Central 500CP-US/CA)
• SC 500CP-US-10 600V (Sunny Central 500CP-US/CA 600V)
• SC 630CP-US-10 (Sunny Central 630CP-US/CA)
• SC 720CP-US-10 (Sunny Central 720CP-US/CA)
• SC 750CP-US-10 (Sunny Central 750CP-US/CA)
• SC 800CP-US-10 (Sunny Central 800CP-US/CA)
• SC 850CP-US-10 (Sunny Central 850CP-US/CA)
• SC 900CP-US-10 (Sunny Central 900CP-US/CA)
This manual must be followed during installation and maintenance.
The product is designed and tested in accordance with international safety requirements, but as with all electrical and
electronic equipment, certain precautions must be observed when installing and/or operating the product. To reduce the
risk of injury and to ensure the safe installation and operation of the product, you must carefully read and follow all
instructions, cautions and warnings in this manual.
Warnings in this Document
A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not
correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or
other equipment connected to the SMA equipment or personal injury.
Symbol Description
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 is used to address practices not related to personal injury.
Installation Manual SCCP-US-IA-US_en-41 3
General Warnings SMA America, LLC
:$5 1,1*
Warnings on this product
The following symbols are used as product markings with the following meanings.
Symbol Description
Warning regarding dangerous voltage
The product works with high voltages. All work on the product must only be performed as described in
the documentation of the product.
Beware of hot surface
The product can become hot during operation. Do not touch the product during operation.
Electric arc hazards
The product has large electrical potential differences between its conductors. Arc flashes can occur
through air when high-voltage current flows. Do not work on the product during operation.
Risk of Fire
Improper installation of the product may cause a fire.
Observe the operating instructions
Read the documentation of the product before working on it. Follow all safety precautions and instructions
as described in the documentation.
General Warnings
General Warnings
All electrical installations must be made in accordance with the local and National Electrical Code
or the Canadian Electrical Code
provincial, federal or national laws, regulation or codes applicable to the installation and use of the product, including
without limitation applicable electrical safety codes. All installations must conform with the laws, regulations, codes and
standards applicable in the jurisdiction of installation. SMA assumes no responsibility for the compliance or
noncompliance with such laws or codes in connection with the installation of the product.
Before installing or using the product, read all of the instructions, cautions, and warnings in this manual.
Before connecting the product to the electrical utility grid, contact the local utility company. This connection must be
made only by qualified personnel.
Wiring of the product must be made by qualified personnel only.
®
CSA C22.1. This document does not and is not intended to replace any local, state,
®
ANSI/NFPA 70
4 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC Table of Contents
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3 Personal Protective Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.4 Symbols on the Sunny Central Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.5 Labels on the Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.5.1 Inverter without Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
2.5.2 Inverter with Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1 Plant Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2 Design of the Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3 Integrated AC Disconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.4 Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.5 External Fast Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.6 Islanding Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.7 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.8 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4 Scope of Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6 Preparation for Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 Dimensions of the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1.1 Dimensions for Outdoor and Indoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.1.2 Dimensions of the Connection Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.2 Requirements for the Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.2.1 Ambient Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.2.2 Supply Air and Exhaust Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.2.3 Minimum Clearances for Outdoor Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
6.2.4 Minimum Clearances for Installation in Electrical Equipment Rooms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
6.2.5 Requirements for the Cable Routing between MV Transformer and Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . .39
6.3 Preparation for Installation on a Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.3.1 Requirement for Foundation and Cable Arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
6.3.2 Position of the Mounting Holes on the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.3.3 Drilling Mounting Holes in the Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
7 Transporting the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.1 Safety Precautions for Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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Table of Contents SMA America, LLC
7.2 Center of Gravity of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.3 Mounting the Rear Kick Plates for Installation in Electrical Equipment Rooms . . . . . . . . . . . . . . . . . . . . . . . 44
7.4 Transporting the Inverter Using a Crane Fork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.5 Transporting the Inverter Using a Forklift Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.6 Transporting the Inverter Using a Pallet Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.7 Transporting the Inverter Using a Crane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.7.1 Removing the Roof of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
7.7.2 Transporting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.7.3 Mounting the Roof of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
8 Installation of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
8.1 Installing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.1.1 Installing the Inverter on a Foundation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
8.2 Removing the Connection Area Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.3 Mounting the Ventilation Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.4 Mounting the Base Braces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9 Grounding Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
9.1 Requirements for the Cables and Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.1.1 Cable Requirements for the Grounding Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
9.1.2 Requirements for the Cable Connection with Terminal Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
9.2 Grounding Connection Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9.3 Connecting the Grounding Cables with Terminal Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
10 DC Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
10.1 Safety Precautions for the DC Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
10.2 Requirements for the Cables and Cable Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10.2.1 Cable Requirements for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
10.2.2 Requirements for the Cable Connection with Terminal Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
10.3 Overview of the DC Connection for the Option DC Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10.3.1 DC Connection with Negative Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
10.3.2 DC Connection with Positive Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
10.3.3 DC Connection without Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
10.4 Overview of the DC Connection for the Optional DC Busbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
10.4.1 DC Connection with Negative Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
10.4.2 DC Connection with Positive Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
10.4.3 DC Connection without Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
10.5 Connecting the DC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11 AC Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
11.1 Safety Precautions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
11.2 Requirements for the Cables and Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
11.2.1 Cable Requirements for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
11.2.2 Requirements for the Cable Connection with Terminal Lug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
11.3 Overview of the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
11.4 Connecting the AC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12 Cable Connection of External Devices in the Interface Cabinet . . . . . . . . . . . . . . . . . . . . . . . . .76
12.1 Connection Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
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SMA America, LLC Table of Contents
12.1.1 Inverter Without Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
12.1.2 Inverter With Integrated DC Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
12.2 Cable Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.3 Switching off the Circuit Breaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.4 Inserting the Cables into the Interface Cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
12.5 Connecting the Remote Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.6 Connecting the External Setpoint Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.7 Connecting the Transformer Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
12.8 Connecting the External Voltage Supply (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.9 Insulation Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
12.10 Connecting the External Fast Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
12.11 External AC Power Contactor Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
13 Installing the DC Fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13.1 Units without Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13.2 Units with Integrated DC Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
14 Disconnecting the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
15 Setting up a Plant Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
15.1 Setting up a Plant Network with Copper Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
15.2 Setting up a Plant Network with Optical Fiber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
15.3 Connecting the Inverter via the Service Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
16 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
16.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
16.2 Checking the Inverter Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
16.3 Mounting the Protective Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
16.4 Checking the Voltages on the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
16.4.1 Checking the DC Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
16.4.2 Checking the AC Line Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
16.4.3 Checking the External AC Power Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
16.5 Switching the Voltage Supply On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
16.6 Switching the AC Disconnect On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
16.7 Mount the Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
16.8 Switch the Inverter On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
17 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
17.1 Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
17.2 Sunny Central 500CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
17.3 Sunny Central 500CP-US/CA 600V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
17.4 Sunny Central 630CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
17.5 Sunny Central 720CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
17.6 Sunny Central 750CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
17.7 Sunny Central 800CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
17.8 Sunny Central 850CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
17.9 Sunny Central 900CP-US/CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
17.10 Integrated AC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
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Table of Contents SMA America, LLC
18 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
19 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
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SMA America, LLC 1 Information on this Document
1 Information on this Document
This section provides important information on how to use this document and how to work with the Sunny Central inverter.
Among other things, this document specifies the Sunny Central inverters for which this document is valid and the target
group for which it has been written.
1.1 Validity
This document is valid for the following device types:
• Sunny Central 500CP-US/CA (SC 500CP-US-10)
• Sunny Central 500CP-US/CA 600V (SC 500CP-US-10 600V)
• Sunny Central 630CP-US/CA (SC 630CP-US-10)
• Sunny Central 720CP-US/CA (SC 720CP-US-10)
• Sunny Central 750CP-US/CA (SC 750CP-US-10)
• Sunny Central 800CP-US/CA (SC 800CP-US-10)
• Sunny Central 850CP-US/CA (SC 850CP-US-10)
• Sunny Central 900CP-US/CA (SC 900CP-US-10)
The production version is indicated on the type label.
1.2 Target Group
This document is intended for qualified persons. Only qualified persons are allowed to perform the tasks described in this
document.
Qualified persons have received appropriate training and have demonstrated the ability and knowledge to install,
operate, and perform maintenance on the device.
Qualified persons are aware of the obligation to wear Hazard Risk Category 2 personal protective equipment and
always comply with the general safety regulations for dealing with electric voltage.
Qualified persons have been trained in how to deal with the dangers and risks associated with installing electrical
installations as specified in 29 CFR, Chapter XVII, Part 1910 (OSHA), NEC, and NFPA 70E, and possess all the
necessary knowledge for averting danger. There must be written documentation of their training.
1.3 Additional Information
Links to additional information can be found at www.SMA-Solar.com.
Information Document type
Installation requirements for Sunny Central 500CP-US / 500CP-US 600V / 630CP-US /
720CP-US / 750CP-US / 800CP-US / 850CP-US / 900CP-US
Medium-voltage transformers - Important Requirements for Medium-Voltage Transformers
and Transformers for Auxiliary Power Supply for SUNNY CENTRAL CP-US Series Inverters
Sunny Central Communication Controller Technical Information
Technical Information
Technical Information
SC-COM Modbus® Interface (Modbus information including the Zone Monitoring option) Technical description
Q at Night Technical Information
1.4 Symbols
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
Installation Manual SCCP-US-IA-US_en-41 9
1 Information on this Document SMA America, LLC
Symbol Explanation
☐ Indicates a requirement for meeting a specific goal
☑ Desired result
✖ A problem that could occur
1.5 Nomenclature
Complete designation Designation in this document
SMA America Production, LLC SMA
SMA Solar Technology Canada Inc. SMA
Sunny Central Communication Controller SC-COM
1.6 Abbreviations
Abbreviation Designation Explanation
AC Alternating Current ‒
DC Direct Current ‒
GFDI Ground Fault Detection Interruption ‒
MPP Maximum Power Point ‒
MSL Mean Sea Level ‒
OF Optical Fiber ‒
PC Personal Computer ‒
PE Protective Earth Protective conductor
PV Photovoltaics ‒
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2 Safety
In this section, you will find general safety precautions which you must observe whenever working on the Sunny Central
inverter. Pay special attention to these sections to avoid personal injury and property damage.
2.1 Intended Use
The inverter converts the direct current generated in the PV modules into grid-compliant alternating current. An external
MV transformer fitted downstream feeds the alternating current generated into the utility grid.
The inverter is designed for indoor and outdoor installation. The inverter is only licensed for use with a suitable transformer
and providing that the maximum permissible DC input voltage and the permitted ambient conditions are complied with
(see Section17 "Technical Data", page98). The transformer must be designed for voltages that arise during pulsed
mode of the inverter.
The inverter has been evaluated by UL for compliance with UL 1741 / IEEE 1547 requirements at the inverter’s terminals
on the local area side of an interconnection transformer for all IEEE 1547 tests other than for Unintentional Islanding. It
has additionally been evaluated for selected tests for use with UL Recognized Component low-voltage transformers as
noted in the table below:
Test Manufacturer Model Electrical Ratings
Unintentional Islanding Test J. Schneider DLGX
1000F-1016TO1001
Synchronization, Harmonics,
and Open Phase
The inverter has not been evaluated for exporting current into low-voltage electrical power system (EPS) with local loads
present, and must connect to the medium voltage EPS via an externally-provided medium-voltage transformer.
The external medium-voltage transformer shall provide isolated primary and secondary windings rated for the output
voltage and kVA rating of the inverter. The medium-voltage transformer shall be located between the output of the inverter
and the medium-voltage utility power connection.
The Authority Having Jurisdiction (AHJ) must consider the effect of the medium-voltage transformer provided in the field
with respect to electrical ratings, impedance, and the resultant effects on the utility interconnection performance of the
inverter, with respect to the ratings and impedance of the transformer selected.
The inverter has not been evaluated for an installation of multiple inverters connected to one transformer. The Authority
Having Jurisdiction shall determine if any additional evaluation is necessary of such a system.
The inverter can optionally be equipped with an AC power switch for "branch circuit protection". This AC circuit breaker
simultaneously acts as the AC Disconnect in accordance with NEC ANSI/NFPA 70 and CEC. For inverters without an
AC circuit breaker, "branch circuit protection" and an AC Disconnect must be implemented by the installer. Further
information is provided in section 3.1.
The inverter with an integrated AC Disconnect can be optionally ordered with an integrated DC Switch in order to be
able to disconnect the inverter from the PV array. Both devices are designed to be used with a lockout device to secure
the inverter against reconnection during service. If the inverter does not have an integrated DC Switch, an external DC
Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be able to disconnect the
inverter from the PV array.
J. Schneider DLGX
1250F-1001TO1001
Primary 289 V
Secondary 480 V, 1,000kVA
Primary 480 V / 1,500A
Secondary 480 V / 1,500A, 1,250kVA
If the unit is not provided with a GFDI or insulation monitoring device, this inverter must be used with an
external GFDI as required by the Article 690 of the National Electrical Code
an external insulation monitoring device according to UL 1741.
Installation Manual SCCP-US-IA-US_en-41 11
®
for the installation location or
2 Safety SMA America, LLC
The models SC 850CP-US and SC 900CP-US are only provided with transfer trip functionality to meet unintentional
islanding requirements. An external signal is required from the utility (EPS) to cause the inverter to cease-to-energize the
EPS during an island condition. Both inverters have also been tested for automatic unintentional islanding performance
(IEEE 1547.1 chapter 5.7, "Unintentional Islanding") up to 880 kVA AC power.
The outdoor version of the inverter corresponds to UL 1741 "Type 3R" and can also be operated in rain, sleet, and snow.
The indoor version corresponds to UL 1741 "Type 1" and is only licensed for installation in electrical equipment rooms.
Only persons fulfilling all of the skills for the target group may work on or with the inverter.
Intended use also includes reading the product documentation and observing all safety precautions.
All work on the inverter must be performed using appropriate tools and in compliance with the ESD protection regulations.
NFPA 70B Table 130.7(C)(16) Hazard Risk Category 2 personal protective equipment is to be worn by all persons
working on or with the inverter.
Unauthorized persons may not operate the inverter and must keep at a distance from the inverter.
No reconstruction, modification or installation of additional components may be carried out on the inverter without the
express consent of SMA America, LLC.
The inverter must not be operated with its doors open.
The inverter must not be opened when it is raining or when humidity exceeds 95%.
The inverter must not be operated with any technical defects.
For safety reasons, it is forbidden to modify the product or install components that are not explicitly recommended or
distributed by SMA.
Only use the inverter in accordance with the information provided in the enclosed documentation. 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.
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2.2 Safety Precautions
This section contains safety precautions that must be observed at all times when working on or with the product. To
prevent personal injury or property damage and to ensure long-term operation of the product, read this section carefully
and follow all safety precautions at all times.
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the inverter. Touching live components results in death or serious
injury due to electric shock.
• When working in a high contact-risk environment, wear Hazard Risk Category 2 personal protective equipment.
• Do not touch live components.
• Follow the instructions precisely.
• Observe all safety messages on the product and in the documentation.
• Observe all safety precautions of the module manufacturer.
• Before any work on the inverter is performed, always disconnect the following components from voltage sources
if live voltage is not absolutely necessary:
– Power line voltage for grid feed-in
– Internal power supply
– DC voltage from the PV array
– Additional external voltages, e.g. control signals of a control room
• Ensure that no disconnected components can be reconnected.
• After disconnecting the inverter from voltage sources, wait at least 15 minutes for the capacitors of the inverter to
discharge completely.
• Always check that no voltage is present in any of the components before working on the inverter.
• Ground and short-circuit the device.
• Cover or shield any adjacent live components.
Danger to life from electric shock due to live DC cables
DC cables connected to PV modules that are exposed to sunlight are live. Touching live components results in death or
serious injury.
• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
Danger to life from electric shock due to ground fault
If a ground fault has occurred, parts of the plant that are supposedly grounded may in fact be live. Touching incorrectly
grounded components can result in death or very serious injuries from electric shock.
• Ensure that no voltage is present before touching any components of the PV plant.
• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.
Danger to life from electric shock when entering the PV field
The insulation monitoring device with GFDI and Advanced Remote GFDI does not provide protection from injury when
GFDI is activated. PV modules grounded by GFDI discharge voltage to ground. When entering the PV field, lethal
electric shocks may occur.
Installation Manual SCCP-US-IA-US_en-41 13
• Before entering the PV field, switch the PV array to insulated operation.
• Ensure that the insulation resistance of the PV array is greater than 1 k Ω .
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Danger to life from electric shock if the inverter is damaged
Operating a damaged inverter can lead to hazardous situations that result in death or serious injuries due to electric
shock.
• Only use the inverter when it is technically faultless and in an operationally safe state.
• Regularly check the inverter for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.
Danger to life from electric shock even if the inverter is disconnected on the AC and DC sides
The precharge unit of the option "Q at Night" is also live if the AC contactor and the DC switch are open. Touching live
components of this assembly will result in death or serious injury.
• Do not touch live components.
• Do not remove protective covers.
• Observe the warning messages.
• Wear Hazard Risk Category 2 personal protective equipment.
Danger to life from electric shock when the inverter is not locked
If the inverter is not locked, this means that unauthorized persons have access to components carrying lethal voltages.
Touching live components may result in death or serious injury due to electric shock.
• Always close and lock the inverter.
• Remove the keys from the door locks and from the key switch.
• Keep the keys in a safe place.
• Ensure that unauthorized persons do not have access to the PV plant.
Danger to life due to blocked escape routes
In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two inverters
located opposite each other blocks the escape route. It is imperative that the escape route is freely accessible at all
times.
• An escape route of at least 3 ft. (915 mm) width must be available at all times. Make sure the minimum passage
width of the route meets local standards.
• Do not place any objects in the escape route path.
• Remove all tripping hazards from the escape routes.
• If two inverters have been installed facing each other, never open the doors of both inverters simultaneously.
Risk of fire due to failure to observe torque specifications on high-voltage bolted connections
Failure to follow the specified torques reduces the ampacity of the live screw connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that high-voltage bolted connections are always executed with the exact torques specified in this document.
• Use suitable tools when working on the device.
• Avoid repeated tightening of high-voltage bolted connections, as this may result in inadmissibly high torques.
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Risk of burns due to hot components
Some components of the inverter can become very hot during operation. Touching these components can result in burn
injuries.
• Observe safety messages on the components.
• During operation, do not touch any components marked with such messages.
• After disconnecting the plant from voltage sources, wait until any hot components have cooled down sufficiently.
• Wear personal protective equipment for all work on the inverter.
Damage to the components due to dust or moisture penetration
Dust intrusion or moisture penetration can damage the inverter or impair its functionality.
• Do not open the inverter during rainfall or humidity of more than 95%.
• Only maintain the inverter when the environment is dry and free of dust.
• Do not operate the inverter while the door is open.
• If present, connect the external supply voltage after having set up and installed the inverter.
• Switch on the circuit breaker of the external supply voltage as well as the circuit breakers of the 24 V circuits. This
will activate the heating and interior fans, which will then switch on automatically.
• Mount all panels of the inverter when interrupting the installation process or commissioning.
• Close and lock the inverter.
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the device.
• Wear personal protective equipment for all work on the devices.
• Discharge electrostatic charge by touching uncoated, grounded enclosure parts, e.g. at the PE connection on the
doors. Only then is it safe to touch any electronic components.
2.3 Personal Protective Equipment
Always wear the personal protective equipment recommended by SMA America, LLC when working on the inverter. All
clothing should be in accordance with NFPA 70E Section 130.7. Appropriate Insulated gloves for shock protection in
accordance with NFPA 70E Section 130.7(C), rated at least 1000V shall be worn as required.
Any other prescribed protective equipment must also be used. When carrying out work on live parts of the inverter,
protective equipment of at least Hazard Risk Category 2 is required in accordance with NEMA NFPA 70 E, table
130.7(C)(16).
Installation Manual SCCP-US-IA-US_en-41 15
Hazard Risk Category 2 Personal Protective Equipment Required
In accordance with NFPA 70E, an arc flash hazard risk analysis has been performed by SMA, and appropriate Arc
Flash Hazard labels stating the required Personal Protective Equipment (PPE) for exposed, energized interaction with
the equipment, are installed. Hazard Risk Category 2 PPE is the requirement for all routine maintenance, diagnostics,
and commissioning activities as described in the SMA protocols. Areas within the machine also exist that cannot,
under any circumstances, be exposed while energized. These areas are marked accordingly on the machine, and
can only be made accessible after de-energization of the inverter.
For additional information, please contact the SMA Service Line.
2 Safety SMA America, LLC
2.4 Symbols on the Sunny Central Inverter
Symbol Explanation
DC current
Earth Ground
AC current
On position of the AC Disconnect
Off position of the AC Disconnect
Center of gravity
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2.5 Labels on the Sunny Central Inverter
This section describes the positions of the labels on the inverter. The warning labels identify potentially hazardous areas
or components. Familiarize yourself with the warning labels and their positions before working on the inverter.
2.5.1 Inverter without Integrated DC Switch
Figure1: Safety messages on the inverter
Position SMA order number Description
A 86-0043464 Warning label general SC-US EN
86-430042 Warning label Arc Flash Hazard Protection
B 86-00480030 Only with order option AC Disconnect: Photovoltaic System AC
Disconnect
C 86-00480020 Warning label Arc Flash
D 86-0043474 Warning label SC-US external transformer EN
Installation Manual SCCP-US-IA-US_en-41 17
2 Safety SMA America, LLC
Position SMA order number Description
E 86-004300 Warning label, Burn Hazard, Hot surface
F 86-0043472 Only for order option DC fuses: Warning label SC-US DC fuses
EN/ES
86-0043473 Only for order option DC fuses: Warning label SC-US DC fuses
EN/FR
G ‒ Type label
H ‒ Label control supply voltage
I 86-10867027 For positive grounding: 1,000 V PV‒
86-430045 For positive grounding: 600 V PV‒*
86-10867028 For negative grounding: 1,000 V PV+
86-430044 For negative grounding: 600 V PV+*
K 86-0043462 ABC 60Hz
86-101300.1 ABC 50 Hz
L 86-0043470 Warning label SC-US Conductors, EN-FR
86-0043469 Warning label SC-US Conductors, EN-ES
M 86-0043460 Grounding Electrode Terminal
N 86-10867027 For negative grounding or insulated: 1,000 V PV‒
86-430045 For negative grounding or insulated: 600 V PV‒*
86-10867028 For positive grounding or insulated: 1,000 V PV+
86-430044 For positive grounding or insulated: 600 V PV+*
O 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR
86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES
P 86-0043476 Warning label, SC US stack capacitors EN/ES
86-0043477 Warning label, SC US stack capacitors EN/FR
* For Sunny Central 500CP-US 600V
Replacing warning labels
Missing or damaged warning labels m ust be replaced. The warning labels can be ordered from SMA using the SMA
order numbers listed above.
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2.5.2 Inverter with Integrated DC Switch
Figure2: Safety messages on the inverter
Position SMA order number Description
A 86-0043464 Warning label general SC-US EN
86-430042 Warning label Arc Flash Hazard Protection
B 86-0033325 Label "Closed"
C 86-00480030 Label "Photovoltaic System AC Disconnect"
D 86-101400.1 Label "DC-Switch"
E 86-0033324 Label "Open"
F 86-00480020 Warning label Arc Flash
G 86-0043474 Warning label SC-US external transformer EN
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2 Safety SMA America, LLC
Position SMA order number Description
H 86-0033326 Warning label Electric Shock due to Live Voltage EN/ES
86-0033327 Warning label Electric Shock due to Live Voltage EN/FR
I 86-004300 Warning label Burn Hazard
K 86-0043472 Only for order option DC fuses: Warning label SC-US DC fuses
EN/ES
86-0043473 Only for order option DC fuses: Warning label SC-US DC fuses
EN/FR
L 86-0033321 Warning label Electric Shock Hazard EN/FR
86-0033322 Warning label Electric Shock Hazard EN/ES
M 86-0033329 Warning label Danger: Do not pull out fuses under load EN/FR
86-0033328 Warning label Danger: Do not pull out fuses under load EN/ES
N‒ Nameplate
O ‒ Label control supply voltage
P 86-10867027 For positive grounding: 1,000 V PV‒
86-430045 For positive grounding: 600 V PV‒*
86-10867028 For negative grounding: 1,000 V PV+
86-430044 For negative grounding: 600 V PV+*
Q 86-0043462 ABC 60Hz
86-101300.1 ABC 50 Hz
R 86-0043470 Warning label SC-US Conductors, EN-FR
86-0043469 Warning label SC-US Conductors, EN-ES
S 86-0043460 Grounding Electrode Terminal
T 86-10867027 For negative grounding or insulated: 1,000 V PV‒
86-430045 For negative grounding or insulated: 600 V PV‒*
86-10867028 For positive grounding or insulated: 1,000 V PV+
86-430044 For positive grounding or insulated: 600 V PV+*
U 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR
86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES
V 86-0043476 Warning label, SC US stack capacitors EN/ES
86-0043477 Warning label, SC US stack capacitors EN/FR
* For Sunny Central 500CP-US 600V
Replacing warning labels
Missing or damaged warning labels m ust be replaced. The warning labels can be ordered from SMA using the SMA
order numbers listed above.
20 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC 3 Product Description
3 Product Description
This section will give you an overview of the inverter and its components.
3.1 Plant Overview
The inverter converts the direct current generated in the PV modules into grid-compliant alternating current. An external
MV transformer fitted downstream feeds the alternating current generated into the utility grid.
An AC Disconnect and DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC.
The inverter can be optionally ordered with an integrated AC Disconnect and an integrated DC Switch. Both devices are
designed to be used with a lockout device to secure the inverter against reconnection during service. With the AC
Disconnect, the inverter can be disconnected from the utility grid simply and safely. This option does not require an
additional AC Disconnect Unit on the AC side.
With the DC Switch, the inverter can be disconnected from the PV array. If the inverter does not have an integrated DC
Switch, an external DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be
able to disconnect the inverter from the PV array. This allows you to easily and safely disconnect the inverter as needed.
In some jurisdictions, additional external disconnecting means may be required for servicing of the DC input fuses. SMA
recommends an early review with the AHJ to identify their requirements for the PV System.
Sunny Central Inverter with Integrated AC Disconnect and Integrated DC Switch
Figure3: Principle of a grid-tie PV plant with a Sunny Central Inverter with integrated AC Disconnect and DC Switch
Position Description
A PV array
B String Combiner Box
C Inverter with integrated AC Disconnect and DC Switch
E External transformer
F Utility grid
Installation Manual SCCP-US-IA-US_en-41 21
3 Product Description SMA America, LLC
Sunny Central Inverter with Integrated AC Disconnect and External DC Disconnect
Figure4: Principle of a grid-tie PV plant with an external DC Disconnect and a inverter with integrated AC Disconnect
Position Description
A PV array
B String Combiner Box
C Inverter with Integrated AC Disconnect
D DC DisconnectUnit
E External transformer
F Utility grid
Sunny Central Inverter with External AC Disconnect and External DC Disconnect
As an option, the AC circuit breaker can be mounted externally.
Circuit breaker
The unit is provided with a UL listed circuit breaker on the output rated 1,600 A for branch circuit protection. If the
circuit breaker shall be located externally to secure the AC path, you have to use the same type of circuit breaker
(ABB Emax E2B-A with 42kA rated short-circuit current, ABB Emax E2N-A with 65 kA rated short-circuit current or
ABB Emax E2H-A with 85kA rated short-circuit current and 1,600 A continuous current rating each).
Figure5: Principle of a grid-tie PV plant with a Sunny Central inverter and external AC / DC Disconnect Unit
Position Description
A PV modules
22 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC 3 Product Description
Position Description
B String Combiner Box
C Inverter without integrated AC Disconnect and without integrated DC Switch
D AC / DC DisconnectUnit
E External transformer
F Utility grid
3.2 Design of the Sunny Central Inverter
Figure6: Design of the Sunny Central inverter (example)
Position Description
A Inverter cabinet
B Interface cabinet
CTouch display
DKey switch
EService interface
F Integrated AC Disconnect*
G Integrated DC Switch*
*Optional
3.3 Integrated AC Disconnect
Depending on the option ordered, the Sunny Central CP-US may be fitted with an integrated AC Disconnect. The
AC Disconnect enables you to disconnect the inverter from the AC grid in the event an emergency and for service and
maintenance work.
Installation Manual SCCP-US-IA-US_en-41 23
3 Product Description SMA America, LLC
Figure7: AC Disconnect
Position Description
A OFF button
BON button
C Spring status indicator
D Position indicator
3.4 Integrated DC Switch
Depending on the option ordered, the Sunny Central CP-US inverter may be fitted with an integrated DC Switch. The
DC Switch enables you to disconnect the inverter from the PV array in the event an emergency and for service- and
maintenance work. Despite disconnecting the integrated DC Switch, voltages are still present on the DC fuses and the
inverter busbars. Touching the DC fuses or the busbars will result in death or very serious injuries from electric shock.
Figure8: Integrated DC Switch
Position Description
A Green light repeater
The DC Switch is closed.
B DC Switch (lockable with a lockout device)
C Red light repeater
The DC Switch is open.
24 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC 3 Product Description
3.5 External Fast Stop
The external fast stop is to be used if the inverter is to be disconnected via an external signal in accordance with IEEE
1547 (e.g. External Islanding Detection). The inverter is delivered with a fast stop input. It is possible to connect an
external switch to this fast stop input. The external fast stop disconnects the inverter from the utility grid within 100 ms.
The options for configuring the external fast stop are displayed in the following table.
Option Description
The external fast stop is
deactivated.
The external fast stop is
operated via an external 24 V
supply.
Tripping the fast stop function
The fast stop function should only be tripped in the event of immediate danger. Tripping the fast stop will not rapidly
discharge the capacitors. If the inverter is to be switched off and correctly shut down via an external signal, use the
input of the remote shutdown function.
The models SC 850CP-US inverter and SC 900CP-US inverter are only provided with transfer trip functionality to meet
unintentional islanding requirements. An external signal is required from the utility (EPS) to utilize this feature.
The terminals of the active fast stop are bridged ex works. The fast stop function is
thus deactivated.
An external latching switch (break contact) is connected to the inverter terminals via
an external 24 V voltage supply. If the external switch is inactive, the switch relay is
energized and the inverter feeds into the grid. If the external switch is activated, the
relay is de-energized and the fast stop is tripped. The inverter is stopped and no
longer feeds energy into the grid.
Voltage ranges for the relay:
24 V to 30 V: The inverter is in operation.
0 V to 4 V: The inverter is not in operation.
3.6 Islanding Detection
Stand-alone grids form when the following conditions occur simultaneously:
• The medium-voltage grid fails.
• The inverter feeds in an amount x of power. There is an electrical load on the same branch of the grid with a load
equal to that of power x.
There are two methods for islanding detection:
• Active Islanding Detection*
• External Islanding Detection
Active Islanding Detection
The inverter detects the formation of stand-alone grids during a grid failure and disconnects the inverter from the utility
grid.
This function is set via the parameter EnaAID and cannot be active at the same time as the "FRT" function.
External Islanding Detection
In the event of a grid failure, the fo rmation of stand-alone grids is detected at the farm level. If a stand-alone grid is formed,
a signal is transmitted to the fast stop input of the inverter.
If the signal appears at the fast stop input of the inverter while the inverter is in the "MPP load operation" operating state,
the inverter switches to the operating state "Shutdown". Once shutdown is complete, the AC contactor and the DC
switching device open automatically and the inverter switches to the operating state "Stop".
For external islanding detection, a suitable cable must be connected to the inverter fast stop input during installation.
* Not with some models of the SC 850CP-US inverter and the SC 900CP-US inverter
Installation Manual SCCP-US-IA-US_en-41 25
3 Product Description SMA America, LLC
3.7 Type Label
You can identify the Sunny Central CP-US via the type label. Type labels are attached at the top right on the inside of the
interface cabinet and on the top left side of the inverter cabinet. You will find the following information on the type label:
•Device type
• Serial number
•Production version
• Production date
• Device-specific data
Reading the serial number
You can read the serial number without opening the inverter. The serial number can be found on the inverter on the
top left corner of the roof. You can also read the serial number from the display.
Reading the firmware version
You can read the version number of the firmware of the inverter and the display via the user interface of the SC-COM
or on the display.
Symbols on the Type Label
Symbol Description Explanation
Danger to life due to high
voltages
Risk of burns due to hot surfaces The product can become hot during operation. Avoid contact
Observe the documentation. Observe all documentation that is supplied with the product.
The product operates at high voltages. All work on the product
must be carried out by qualified persons only.
during operation. Allow the product to cool down sufficiently
before carrying out any work. Wear personal protective
equipment such as safety gloves.
Evaluated to the requirements of the Underwriters Laboratories
Standard for Safety for Inverters, Converters, Controllers and
Interconnection System Equipment for Use With Distributed
Energy Resources, UL 1741.
The inverter has been additionally evaluated by Underwriters
Laboratories to CAN/CSA C22.2 No. 107.1-1, "General Use
Power Supplies".
3.8 Schematic Diagram
Schematic diagrams in PDF format contain jump marks. By double clicking a jump mark, the display will change to the
corresponding current path or the referenced place in the equipment list.
SMA recommends using schematic diagrams in PDF format during troubleshooting. The schematic diagrams in PDF
format are available on request. Contact the SMA Service Line.
26 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC 4 Scope of Delivery
4 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.
The scope of delivery depends on the order options.
Figure9: Components included in the scope of delivery
Position Number Description
A1Inverter
B 1 Ventilation plate
C4Kick plate
D 6/7/8/9 DC fuse*
E 1 Non-woven abrasive
F 74 Hexagon screw*
G74Hexagon nut*
H 148 Washer*
I148Spring washer*
K 80 Cable tie
L 3 Rubber seal
M 1 each Installation manual, user manual, circuit diagram, commissioning report
*Optional
Installation Manual SCCP-US-IA-US_en-41 27
5 Storage SMA America, LLC
/05*$&
/05*$&
5 Storage
This section gives you information on how to store the inverter correctly. Follow the information in this section if the inverter
is not to be mounted immediately on its foundation or base. This will help prevent damage to the inverter.
Damage to the inverter due to moisture penetration
If the inverter is not stored properly, moisture can penetrate the enclosure and cause damage to electronic components.
• Only store the inverter in its closed state.
• Storage for six months or more permissible in dry locations only.
• Store at a temperature between ‒13°F and +140°F ( − 25°C to +60°C).
Damage to the inverter due to uneven building ground
Storing the inverter on an unsuitable building ground could damage the frame construction. Dust and moisture can
penetrate the inverter and damage electronic components.
• The building ground must be suitable for the weight of the inverter of 4,123 lbs. (1,870 kg).
• The unevenness of the building ground must not exceed 0.25%.
Storage in cold temperatures and high humidity
If, when storing the device, you connect the external voltage supply and switch on the circuit breaker of the external
voltage supply as well as the circuit breakers of the 24 V circuits, the heater is activated automatically in the event
of high humidity. As a result, you prevent condensation water from forming. The connection of the external voltage
supply is described in Section 12.8.
28 SCCP-US-IA-US_en-41 Installation Manual
SMA America, LLC 6 Preparation for Installation
6 Preparation for Installation
This section describes which preparations you need to perform for the various installation options of the inverter. Read
this section and follow the instructions to perform all the necessary preparations prior to transporting the inverter.
6.1 Dimensions of the Inverter
6.1.1 Dimensions for Outdoor and Indoor Installation
Depending on the order option, the inverter will be delivered with the roof for outdoor installation or without the roof for
indoor installation.
Dimensions with Roof
Figure10: Dimensions with Roof
Width Height Depth Weight
8 ft. 4.87 in. (2,562 mm) 7 ft. 5.45 in. (2,272 mm) 3 ft. 1.64 in. (956 mm) 4,123 lb (1,870 kg)
Installation Manual SCCP-US-IA-US_en-41 29
6 Preparation for Installation SMA America, LLC
Dimensions without Roof
Figure11: Dimensions without roof
Width Height Depth Weight
8 ft. 2.59 in. (2,511 mm) 7 ft. 2.78 in. (2,204 mm) 2 ft. 11.83 in. (910 mm) 4,045 lb (1,835 kg)
30 SCCP-US-IA-US_en-41 Installation Manual
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