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Summary of Contents for SMA CU 1000-US-11
- Page 1 Installation Manual SMA CONNECTION UNIT 1000-US CU1000-US-11-IA-en-13 | Version 1.3...
- Page 3 All such warranties are expressly disclaimed. Neither SMA Solar Technology 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.
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Page 4: Important Safety Instructions
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... - Page 5 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 non-compliance with such laws or codes in connection with the installation of the product.
- Page 6 General Warnings SMA Solar Technology America LLC CU1000-US-11-IA-en-13 Installation Manual...
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Page 7: Table Of Contents
SMA Solar Technology America LLC Table of Contents Table of Contents 1 Information on this Document......9 2 Safety . - Page 8 Table of Contents SMA Solar Technology America LLC 9 Troubleshooting ........38 9.1 Replacing the String Fuses .
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Page 9: Information On This Document
(see Section 2.2 "Skills of Qualified Persons", page 11). Additional Information Links to additional information can be found at www.SMA-Solar.com: Document title Document type Sunny Tripower 12000TL-US / 15000TL-US / 20000TL-US /... -
Page 10: Safety
Section 690.35 of the National Electrical Code , ANSI/NFPA 70. The Connection Unit is intended for use with the following transformerless SMA inverters: • STP 12000TL-US-10 / 15000TL-US-10 / 20000TL-US-10 / 24000TL-US-10 / 30000TL-US-10 The installer is responsible for determining the appropriateness and safety of any modifications to the product or any installed components that are not explicitly recommended for this product or distributed by SMA. -
Page 11: Skills Of Qualified Persons
SMA Solar Technology America LLC 2 Safety 2.2 Skills of Qualified Persons The tasks described in this document must be performed by qualified persons only. Qualified persons must have the following skills: • Knowledge of how electrical devices and plants work and are operated •... -
Page 12: Safety Precautions
2 Safety SMA Solar Technology America LLC 2.3 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. -
Page 13: Scope Of Delivery
SMA Solar Technology America LLC 3 Scope of Delivery 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 2: Components included in the scope of delivery... -
Page 14: Product Description
4 Product Description SMA Solar Technology America LLC 4 Product Description 4.1 Connection Unit The Connection Unit is a String-Combiner to which up to eight strings can be connected. n Un ec tio Co nn Figure 3: Design of the Connection Unit... -
Page 15: Type Label
• Device-specific characteristics You will require the information on the type label to use the Connection Unit safely and when seeking customer support from the SMA Service Line. The type label must be permanently attached to the Connection Unit. Symbols on the Type Label... -
Page 16: Dc Switch-Disconnector
The Integration Kit included in the scope of delivery of the Connection Unit contains components that may be used to integrate the Connection Unit with the SMA Sunny Tripower inverter. The use of Integration Kit components is not mandatory and it is the responsibility of the system designer and installer to determine the appropriateness of Integration Kit components for any particular installation. -
Page 17: String Fuses
SMA Solar Technology America LLC 4 Product Description Item Quantity Description 1-inch conduit sections Liquidtight Flexible Non-Metallic Conduit (LFNC-B) 1-inch conduit fittings Non-metallic Liquidtight (NMLT) with locknuts 1-inch conduit fitting sealing washers (for sealing conduit fittings at top Connection Unit openings) -
Page 18: Mounting
5 Mounting SMA Solar Technology America LLC Example: calculating the minimum size of the string fuses For example, if the Isc of the PV module equals 8.2 A, then the size of the string fuses is determined as follows: 1.56 x 8.2 = 12.8 The nearest standard size for string fuses would be a 15 A fuse. - Page 19 SMA Solar Technology America LLC 5 Mounting Dimensions for mounting: 466 mm (18.35 in) 20 mm (0.79 in) 20 mm (0.79 in) Figure 6: Dimensions of the mounting points Installation Manual CU1000-US-11-IA-en-13...
- Page 20 5 Mounting SMA Solar Technology America LLC Information on mounting the Connection Unit below a Sunny Tripower • You can mount the Connection Unit directly below the Sunny Tripower. The output openings of the Connection Unit can be aligned directly below the openings for the DC connection of the Sunny Tripower.
- Page 21 SMA Solar Technology America LLC 5 Mounting Example: Mounting the Connection Unit below the Sunny Tripower; clearance measurements for use with Integration Kit conduits and fittings Installation Manual CU1000-US-11-IA-en-13...
- Page 22 5 Mounting SMA Solar Technology America LLC Recommended clearances: ☐ Observe recommended clearances to the walls or other objects. so that the type label can be read at all times. ☐ The clearances to the front must be chosen in such a way that the DC switch-disconnector is accessible at all times.
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Page 23: Mounting The Connection Unit
SMA Solar Technology America LLC 5 Mounting Permitted mounting positions: ☐ The Connection Unit must be mounted in a permitted position. max. 75° 90° Figure 8: Permitted and prohibited mounting positions 5.2 Mounting the Connection Unit Damage to the Connection Unit due to moisture and dust intrusion Dust or moisture intrusion can damage the Connection Unit. - Page 24 5 Mounting SMA Solar Technology America LLC Procedure: 1. Position the Connection Unit on the mounting location. Danger of electric shock if electric cables and other supply lines are damaged by drilling • Before drilling, ensure that there are no electric cables and supply lines in the wall that could be damaged.
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Page 25: Electrical Connection
SMA Solar Technology America LLC 6 Electrical Connection 6 Electrical Connection 6.1 Safety during Electrical Connection Danger to life due to high voltages in the Connection Unit High voltages that can cause fatal electric shocks are present in the live components of the Connection Unit. -
Page 26: Overview Of The Connection Area
6 Electrical Connection SMA Solar Technology America LLC Electrical installations All electrical installations must be made in accordance with the local electrical standards and ® ®. the National Electrical Code ANSI/NFPA70 or the Canadian Electrical Code CSA C22.1. • Use only +194°F (+90°C) copper wire for all DC wiring connections to the screw terminals between the PV modules and the Connection Unit and between the Connection Unit and the inverter. -
Page 27: Interior View
SMA Solar Technology America LLC 6 Electrical Connection 6.2.2 Interior View A− B− Figure 10: Components and connection areas in the interior of the Connection Unit 1000-US Item Description Shaft of the DC switch-disconnector Terminals for connecting the DC output cables (INPUT B) -
Page 28: Connecting Conduits To The Connection Unit
6 Electrical Connection SMA Solar Technology America LLC 6.3 Connecting Conduits to the Connection Unit Required materials: ☐ Conduits of matching trade size as the openings of the Connection Unit ☐ UL-listed rainproof or wet location conduit fittings complying with UL514B of matching trade size as the openings of the Connection Unit ☐... -
Page 29: Connecting The Grounding Conductor
SMA Solar Technology America LLC 6 Electrical Connection Risk of injury when pressing out the filler plugs • To connect the conduits to the input openings of the Connection Unit, gently press out one filler plug for each conduit opening from the inside with a blunt object (e.g screwdriver handle). - Page 30 6 Electrical Connection SMA Solar Technology America LLC Procedure: Danger to life due to electric shock • Make sure all devices connected to the Connection Unit (e.g inverter) are switched off and protected against reconnection (see manual of the respective device).
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Page 31: Connecting The Pv Array
SMA Solar Technology America LLC 6 Electrical Connection 6.5 Connecting the PV Array Cable requirements: ☐ The DC cables of the PV array must be designed in accordance with the installation requirements applicable on site and for temperatures of +194°F (+90°C). -
Page 32: Connecting The Output Cables
6 Electrical Connection SMA Solar Technology America LLC 5. Check the positive DC cables for correct polarity and connect them to the terminals with the plus sign (+). 6. Tighten the screw terminals with a screwdriver (Philips size: 2) (torque: 30 in-lb (3.4 Nm)). - Page 33 SMA Solar Technology America LLC 6 Electrical Connection Procedure: Connect the DC output cables for connecting the Connection Unit to the inverter for INPUT A and INPUT B as follows: Danger to life due to electric shock • Make sure all devices connected to the Connection Unit (e.g inverter) are switched off and protected against reconnection (see manual of the respective device).
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Page 34: Commissioning
7 Commissioning SMA Solar Technology America LLC 7 Commissioning 7.1 Inserting the String Fuses Insert the string fuses before commissioning the Connection Unit. Requirements: ☐ Only UL-listed string fuses according to UL 2579 are permitted. ☐ The fuse size must be 10 mm x 38 mm (midget format). - Page 35 SMA Solar Technology America LLC 7 Commissioning 5. Insert 1 string fuse into each fuse holder. 6. Close all fuse holders. ☑ The fuse holders audibly click when closed completely. 7. Mount the lid of the Connection Unit: • Position the lid in such a way that the protruding...
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Page 36: Commissioning The Connection Unit
7 Commissioning SMA Solar Technology America LLC 7.2 Commissioning the Connection Unit The Connection Unit is part of the PV system. All parts of the PV system must be mounted and set up prior to commissioning the Connection Unit. Commissioning occurs via the inverter circuit breaker (see inverter installation manual). -
Page 37: Disconnecting The Connection Unit From Voltage Sources
SMA Solar Technology America LLC 8 Disconnecting the Connection Unit from Voltage Sources 8 Disconnecting the Connection Unit from Voltage Sources Danger to life due to electric shock • Make sure that all devices (e.g. inverter) connected to the Connection Unit are switched off and protected against reconnection (see manual of the respective device). -
Page 38: Troubleshooting
9 Troubleshooting SMA Solar Technology America LLC 9 Troubleshooting 9.1 Replacing the String Fuses Each string fuse is assigned to one string. If one or several string fuses are blown or defective, you have to replace the respective string fuses. - Page 39 SMA Solar Technology America LLC 9 Troubleshooting 5. Remove blown or defective string fuses from the fuse holders. 6. Insert one new string fuse into each fuse holder. 7. Close all safety levers all the way. ☑ The safety levers audibly click into place.
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Page 40: Decommissioning
10 Decommissioning SMA Solar Technology America LLC 10 Decommissioning 10.1 Disassembling the Connection Unit 1. Disconnect the PV system from voltage sources (see inverter installation manual). 2. Remove all cables from the Connection Unit: • Disconnect the Connection Unit from voltage sources (see Section 8). -
Page 41: Technical Data
SMA Solar Technology America LLC 11 Technical Data 11 Technical Data DC Input CU 1000-US-11 Maximum number of incoming strings Strings for INPUT A Strings for INPUT B Maximum input voltage 1000 V DC Output CU 1000-US-11 Maximum number of outgoing strings... -
Page 42: General Data
11 Technical Data SMA Solar Technology America LLC General Data Width x height x depth ⁄ in x 15 ⁄ in x 5 ⁄ (466 mm x 398 mm x 136 mm) Weight 22 lb (10 kg) Length x width x height of packaging ⁄... -
Page 43: Contact
SMA Solar Technology America LLC 12 Contact 12 Contact If you have technical problems concerning our products, contact the SMA Service Line. We require the following information in order to provide you with the necessary assistance: • Device type of the Connection Unit •... - Page 44 SMA Solar Technology www.SMA-Solar.com SMA Solar Technology America LLC www.SMA-America.com...
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