SMA SB3.0-1SP-US-40 User manual

SUNNY BOY
SBxx-1SP-US-40-AT-PU-SG-xx-12 | 102509-00.01 | Version 1.2
SB3.0-1SP-US-40 / SB3.8-1SP-US-40 /
SB5.0-1SP-US-40 / SB6.0-1SP-US-40 /
SB7.0-1SP-US-40 / SB7.7-1SP-US-40
Replacing the Power Unit
ENGLISH Service Manual ESPAÑOL Instrucciones de servicio técnico
FRANÇAIS Manuel de service

Table of Contents SMA Solar Technology America LLC
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-122
Table of Contents
1 Information on this Document................................................. 3
1.1 Validity........................................................................................................................ 3
1.2 Target Group.............................................................................................................. 3
1.3 Content and Structure of this Document ................................................................... 3
1.4 Symbols in the Document .......................................................................................... 3
2 IMPORTANT SAFETY INSTRUCTIONS.................................... 4
3 Overview of the Enclosure Parts............................................. 7
4 Disassembling the Defective Power Unit................................ 8
5 Mounting the New Power Unit ............................................... 11
6 Packaging the Defective Power Unit for Pick-Up .................. 14
7 Contact ...................................................................................... 15
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1 Information on this Document
SMA Solar Technology America LLC
Service Manual SBxx-1SP-US-40-AT-PU-SG-xx-12 3
1 Information on this Document
1.1 Validity
This document is valid for:
• SB3.0-1SP-US-40 (Sunny Boy 3.0-US)
• SB3.8-1SP-US-40 (Sunny Boy 3.8-US)
• SB5.0-1SP-US-40 (Sunny Boy 5.0-US)
• SB6.0-1SP-US-40 (Sunny Boy 6.0-US)
• SB7.0-1SP-US-40 (Sunny Boy 7.0-US)
• SB7.7-1SP-US-40 (Sunny Boy 7.7-US)
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
• Knowledge of how to safely disconnect SMA inverters
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing, repairing and
using electrical devices and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information
1.3 Content and Structure of this Document
This document describes how to replace components.
Illustrations in this document are reduced to the essential information and may deviate from the real
product.
1.4 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
Indicates a requirement for meeting a specific goal
Desired result
A problem that might occur
Example
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2 IMPORTANT SAFETY INSTRUCTIONS SMA Solar Technology America LLC
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-124
2 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This section contains safety information that must be observed at all times when working on or with
the product.
The product has been designed and tested in accordance with international safety requirements. As
with all electrical or electronical devices, there are residual risks despite careful construction. To
prevent personal injury and property damage and to ensure long-term operation of the product,
read this section carefully and observe all safety information at all times.
DANGER
Danger to life due to electric shock when live components or DC conductors
are touched
When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the
DC conductors and the live components of the inverter. Touching live DC conductors results in
death or lethal injuries due to electric shock.
• Disconnect the product from voltage sources and make sure it cannot be reconnected
before working on the device.
• Do not touch non-insulated parts or cables.
• Do not remove the terminal block with the connected DC conductors from the slot under
load.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock when touching live system components in
case of a ground fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Disconnect the product from voltage sources and make sure it cannot be reconnected
before working on the device.
• Touch the cables of the PV array on the insulation only.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
• Ensure that no voltage is present and wait five minutes before touching any parts of the PV
system or the product.
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2 IMPORTANT SAFETY INSTRUCTIONS
SMA Solar Technology America LLC
Service Manual SBxx-1SP-US-40-AT-PU-SG-xx-12 5
CAUTION
Risk of burns from hot surfaces
The surface of the inverter can get very hot. Touching the surface can result in burns.
• Mount the inverter in such a way that it cannot be touched inadvertently.
• Do not touch hot surfaces.
• Wait 30 minutes for the surface to cool sufficiently.
• Observe the safety messages on the inverter.
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the product when temperatures are below freezing, the enclosure seals can be
damaged. Moisture can penetrate the product then.
• Only open the product if the ambient temperature is not below 0°C (32°F).
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,
remove it prior to opening the product (e.g. by melting the ice with warm air). Observe the
applicable safety regulations.
• Do not disassemble the PowerUnit unless the ambient temperature is at least 0°C (32°F)
and conditions are frost-free.
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.
• Only open the product if the humidity is within the thresholds and the environment is free of
sand and dust.
• Do not open the product during a dust storm or precipitation.
• Close tightly all enclosure openings.
• Only use listed rain-tight or liquid-tight conduit fittings to attach the conduits to the product.
• Only disassemble the PowerUnit if a new PowerUnit is already available.
NOTICE
Damage due to cleaning agents
The use of cleaning agents may cause damage to the product and its components.
• Clean the product and all its components only with a cloth moistened with clear water.
NOTICE
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through
electrostatic discharge.
• Ground yourself before touching any component.
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2 IMPORTANT SAFETY INSTRUCTIONS SMA Solar Technology America LLC
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-126
Electrical installations (only applies to North America)
All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1.
• Before connecting the inverter to the utility grid, contact your local grid operator. The
electrical connection of the inverter must be carried out by qualified persons only.
• Ensure that no cables used for electrical connection are damaged.
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3 Overview of the Enclosure Parts
SMA Solar Technology America LLC
Service Manual SBxx-1SP-US-40-AT-PU-SG-xx-12 7
3 Overview of the Enclosure Parts
Figure 1 : Overview of the enclosure parts
Position Designation
A Power Unit
B Connection Unit
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4 Disassembling the Defective Power Unit SMA Solar Technology America LLC
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-128
4 Disassembling the Defective Power Unit
Prior to disassembling the defective Power Unit, all connections between the Power Unit and the
Connection Unit must be severed. Only then can the Power Unit be removed from the Connection
Unit. All cables connected to the communication assembly can remain plugged in and do not need
to be removed to disassemble the PowerUnit.
Procedure:
1. DANGER
Danger to life due to high voltages
• Disconnect the inverter from voltage sources (see inverter manual).
2. Remove the terminal block with the connected DC
conductors from slot DC-in. To do this, unscrew the
screws using a flat-blade screwdriver (blade width:
4mm (5⁄32in)) and pull the terminal block out of
the slot. While doing so, only touch the terminal
block on the black enclosure.
3. Remove the terminal block with the connected AC
conductors from slot AC-out. To do this, unscrew the
screws using a flat-blade screwdriver (blade width:
4mm (5⁄32in)) and pull the terminal block out of
the slot.
4. If there is a switch and an outlet for secure power
supply operation connected, remove the terminal
block with the connected cable from the SPS slot. To
do this, unscrew the screws using a flat-blade
screwdriver (blade width: 3.5mm) and pull the
terminal block out of the slot.
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4 Disassembling the Defective Power Unit
SMA Solar Technology America LLC
Service Manual SBxx-1SP-US-40-AT-PU-SG-xx-12 9
5. Pull the ribbon cable connecting the communication
assembly to the PowerUnit out of the
communication assembly.
COM SPS
AC-out
D-IN SPS
A B
M1
X1 X2 M2
ANT.
FCC ID: SVF-KP20
IC: 9440A-KP20
6. If the inverter is fitted with a padlock for theft
protection, open the padlock and remove it.
7. Unscrew the screw M5x60 that fastens the inverter
to the wall mounting bracket (TX25).
8. Unscrew the two screws on the right and left side of
the PowerUnit (TX25) and retain together with the
washers for later use.
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4 Disassembling the Defective Power Unit SMA Solar Technology America LLC
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-1210
9. Lift to remove the Power Unit out of the wall
mounting bracket, thus separating the Power Unit
from the Connection Unit.
TOP
10. If necessary, remove residual insulation material
from the two connection openings at the top of the
Connection Unit.
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