SMA SUNNY CENTRAL UP User manual

SMA
SUNNY CENTRAL UP
SC-UP_SCS-UP_EZE-SG-en-10 | Version 1.0ENGLISH
Service Manual for Installers
Test Instructions for the Power-Generating Unit
Protection Test
SUNNY CENTRAL UP / SUNNY CENTRAL
STORAGE UP

Legal Provisions SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-102
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.
Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not
require prior approval.
SMA Solar Technology AG makes no representations or warranties, 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 representations or warranties are
expressly disclaimed. Neither SMA Solar Technology AG 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 product improvements and field usage experience may
cause SMA Solar Technology AG to make changes to these specifications without advance notice or per contract
provisions. SMA Solar Technology AG 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.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
As of: 4/29/2020
Copyright © 2020 SMA Solar Technology AG. All rights reserved.

Table of Contents
SMA Solar Technology AG
Service Manual for Installers 3SC-UP_SCS-UP_EZE-SG-en-10
Table of Contents
1 Information on this Document..................................................................................................... 4
1.1 Validity ............................................................................................................................................................. 4
1.2 Target Group ................................................................................................................................................... 4
1.3 Levels of Warning Messages.......................................................................................................................... 4
1.4 Symbols in the Document................................................................................................................................ 5
1.5 Typographical Elements in the Document...................................................................................................... 5
1.6 Designations in the Document ........................................................................................................................ 5
1.7 Additional Information..................................................................................................................................... 5
2 Safety ............................................................................................................................................ 6
2.1 IMPORTANT SAFETY INSTRUCTIONS......................................................................................................... 6
2.2 Personal Protective Equipment........................................................................................................................ 9
3 Disconnecting and Reconnecting ................................................................................................ 11
3.1 Disconnecting the Inverter............................................................................................................................... 11
3.2 Disconnecting the Medium-Voltage Transformer........................................................................................... 12
3.3 Reconnecting the Medium-Voltage Transformer............................................................................................ 13
3.4 Reconnecting the Inverter................................................................................................................................ 13
4 Power-Generating Unit Protection Test ...................................................................................... 14
4.1 Safety during the Power-Generating Unit Protection Test ............................................................................. 14
4.2 Calculating the Reference Voltage................................................................................................................. 14
4.3 Saving the Test Parameters ............................................................................................................................. 15
4.4 Performing the Power-Generating Unit Protection Test.................................................................................. 16
5 Contact .......................................................................................................................................... 18

1 Information on this Document SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-104
1 Information on this Document
1.1 Validity
This document is valid for:
• SC 4000 UP (Sunny Central 4000 UP)
• SC 4200 UP (Sunny Central 4200 UP)
• SC 4400 UP (Sunny Central 4400 UP)
• SC 4600 UP (Sunny Central 4600 UP)
• SCS 3450 UP (Sunny CentralStorage 3450 UP)
• SCS 3600 UP (Sunny CentralStorage 3600 UP)
• SCS 3800 UP (Sunny CentralStorage 3800 UP)
• SCS 3950 UP (Sunny CentralStorage 3950 UP)
• SCS 3450 UP-XT (Sunny CentralStorage 3450 UP-XT)
• SCS 3600 UP-XT (Sunny CentralStorage 3600 UP-XT)
• SCS 3800 UP-XT (Sunny CentralStorage 3800 UP-XT)
• SCS 3950 UP-XT (Sunny CentralStorage 3950 UP-XT)
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 the product 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 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
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
Indicates a situation which, if not avoided, can result in property damage.

1 Information on this Document
SMA Solar Technology AG
Service Manual for Installers 5SC-UP_SCS-UP_EZE-SG-en-10
1.4 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
✖
A problem that might occur
Example
1.5 Typographical Elements in the Document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• Enter 10 in the field Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or pressed • Select [Enter].
# • Placeholder for variable components
(e.g., parameter names)
• Parameter WCtlHz.Hz#
1.6 Designations in the Document
Complete designation Designation in this document
Medium-voltage transformer MV transformer
SunnyCentralUP SunnyCentral or inverter
1.7 Additional Information
For more information, please go to www.SMA-Solar.com.
Title and information content Type of information
"PUBLIC CYBER SECURITY - Guidelines for a Secure PV System Communication" Technical information
For information on maintenance activities of the DC switchgear and AC disconnect unit please visit www.abb.com:
Component Document number
DC switchgear: T-Max 1SDH000707R0001

2 Safety SMA Solar Technology AG
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2 Safety
2.1 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This section contains safety information that must be observed at all times when working.
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 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.
• Do not touch non-insulated parts or cables.
• Observe all safety information on components associated with the product.
• Disconnect the inverter from the power path and from the control path if no voltage is required for working on
the product.
• After switching off the inverter, wait at least 25minutes before opening the inverter to allow the capacitors to
discharge completely.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
• Always perform all work in accordance with the locally applicable standards, directives and laws.
• Observe all safety information on the product and in the documentation.
• The product must not be operated with open covers or doors.
• Cover or isolate all live components.
DANGER
Danger to life due to electric shock when operating a damaged product
Operating a damaged product can lead to hazardous situations since high voltages can be present on accessible
product parts. Touching live parts and cables results in death or lethal injuries due to electric shock.
• Only operate the product when it is in a flawless technical condition and safe to operate.
• 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 suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.

2 Safety
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DANGER
Danger to life due to electric shock in case of a ground fault
If there is a ground fault, components that are supposedly grounded may in fact be live and components that are
normally ungrounded may be grounded. The PV field is not grounded when the inverter is disconnected or during
the measurement of the insulation resistance. Touching live parts will result in death or serious injury due to electric
shock.
• Disconnect the inverter from the power path and from the control path if no voltage is required for working on
the product.
• Before working on the system, ensure that no ground fault is present.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
WARNING
Danger to life from electric shock when the product is left unlocked
If the product is not locked, unauthorized persons will have access to components carrying lethal voltages. Touching
live components can result in death or serious injury due to electric shock.
• Always close and lock the product.
• Ensure that unauthorized persons do not have access to the closed electrical operating area.
WARNING
Danger to life from electric shock when entering the PV power plant
Lethal ground currents due to damaged insulations of the PV field. Lethal electric shocks can result.
• Ensure that the insulation resistance of the PV array exceeds the minimum value. The minimum value of the
insulation resistance is: 14kΩ.
• Before entering the PV field, switch the PV power plants with ground fault monitoring to insulated operation.
• After entering the PV power plant, immediately ensure that the inverter does not display an insulation error.
• Disconnect the inverter from the power path and from the control path if no voltage is required for working on
the product.
• Wear suitable personal protective equipment for all work on the product.
• Configure the PV power plant as a closed electrical operating area.
WARNING
Danger to life from electric shock when entering the PV power plant outside of the feed-in
operation
With the order option "Backfeed Power", DC voltage can be applied to the inverter outside of the feed-in operation.
Lethal electric shocks can result.
• Before entering the PV power plant, make sure via the user interface that the inverter is not in backfeed power
mode.
• Always disconnect the inverter from the power transmission path and from the control path if no voltage is
required for working on the PV power plant.
• Wear suitable personal protective equipment for all work on the product.
• Configure the PV power plant as a closed electrical operating area.

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WARNING
Danger to life due to electric shock when the internal power supply is switched off
After switching off the internal power supply at the load-break switch -Q62, lethal voltages are still present in the
cables to load-break switch -Q62 Only after the power path has been enabled are all cables of the internal power
supply de-energized. Touching live components can result in death or serious injury due to electric shock.
• Disconnect the inverter from the power path and ensure that it cannot be reconnected.
• Do not touch the orange cables in the inside of the product. These cables are used for connecting the external
supply voltage and can be dangerous to touch.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
WARNING
Danger to life due to electric shock if external supply voltage is not disconnected
When using an external supply voltage, even after disconnecting the inverter, there may still be lethal voltages
present in cables. Touching live components can result in death or serious injury due to electric shock.
• Disconnect the external supply voltage.
• Do not touch the orange cables in the inside of the product. These cables are used for connecting the external
supply voltage and can be dangerous to touch.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
WARNING
Hearing impairment due to high-frequency noises of the product
The product generates high-frequency noises during operation. This can result in hearing impairment.
• Wear hearing protection.
WARNING
Danger to life due to electric arc if there are tools inside the product
When reconnecting or during operation, an electric arc can occur if there are tools in the product creating a
conductive connection between the live components. This can result in death or serious injury.
• Before commissioning or reconnection, verify that no tools are inside the product.
CAUTION
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.

2 Safety
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CAUTION
Risk of injury when using unsuitable tools
Using unsuitable tools can result in injuries.
• Ensure that the tools are suitable for the work to be carried out.
• Wear personal protective equipment for all work on the product.
CAUTION
Danger of crushing and collision when carelessly working on the product
Carelessly working on the product could result in crushing injuries or collisions with edges.
• Wear personal protective equipment for all work on the product.
NOTICE
Damage due to environmental disturbances
The product can be damaged by environmental disturbances e.g. earthquakes, storms or flooding. With a
damaged product, a safe and trouble-free operation is not guaranteed. Considerable damages to the product and
yield losses can result.
• Always disconnect the product from voltage sources as quickly as possible after large-scale environmental
disturbances.
• Once disconnected from voltage sources, perform a thorough 24-month-maintenance check that is not subject
to the maintenance schedule.
• After a dust or snow storm, ensure that the air inlets and outlets are not covered by any objects (e.g., sand).
• Only recommission the product once any damages have been rectified.
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.
• In case of interruption of work or after finishing work, mount all enclosure parts and close and lock all doors.
• Only operate the product when it is closed.
• Store the closed product in a dry and covered location. Observe storage conditions.
• The temperature at the storage location must be in the specified range. The temperature range is: ‒40°C to
+70°C.
2.2 Personal Protective Equipment
Always wear suitable protective equipment
When working on the product, always wear the appropriate personal protective equipment for the specific job.

2 Safety SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1010
The following personal protective equipment is regarded to be the minimum requirement:
☐ In a dry environment, safety shoes of categoryS3 with perforation-proof soles and steel toe caps
☐ During precipitation or on moist ground, safety boots of categoryS5 with perforation-proof soles and steel toe
caps
☐ Tight-fitting work clothes made of 100%cotton
☐ Suitable work pants
☐ Proper hearing protection
☐ Safety gloves
☐ Proper head protection
Any other prescribed protective equipment must also be used.
When carrying out work on live parts of the inverter, protective equipment of the respective hazard risk category is
required. The hazard risk category of the various areas of the inverter are different. The areas are identified with
warning labels. The required protective equipment must comply with the national regulations.

3 Disconnecting and Reconnecting
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3 Disconnecting and Reconnecting
3.1 Disconnecting the Inverter
To ensure that the DC side is de-energized before opening the inverter, the inverter is equipped with measuring points
for determining the DC voltage. The voltage applied on the DC side is displayed in a ratio of 1:10.
A
−X 252
DC+ PE DC-
−X 251
DC+ PE DC-
Figure 1: Position of measuring points in the customer installation location
Position Designation
A-X251 for measuring the PV voltage
For the greatest possible safety during the disconnection process, the DC voltage must be measured before and after
disconnecting the String-Combiners from voltage. Thus, a flawless measuring chain is ensured.
Measuring points Measurement result
DC+ to DC- 10% of PV voltage present
DC+ to PE 10% of PV voltage present
DC- to PE 0 V
Additionally required material (not included in the scope of delivery):
☐ 2 padlocks. Diameter of the shackle: 5mm to 8mm.
Procedure:
1. On the user interface make sure that error 6494 is not present .
2. Turn the key switch -S1 to Stop.
3. Remove the key. This will protect the inverter from inadvertent reconnection.
4. Turn the DC load-break switch -Q61 to the OFF position. Note that the cable to the load-break switch is still
energized.
5. Pull the bracket out of the switch lever.
6. Hook a suitable padlock into the bracket and lock it. This will ensure that the switch lever cannot reconnect
inadvertently.
7. To ensure the correct functioning of the measuring chain, measure the DC voltage at the terminal -X251. Measure
DC+ against DC- and both poles against the grounding conductor.
8. Turn the load-break switch of the supply voltage -Q62 to the OFF position. Note that the cable to the load-break
switch is still energized.
9. Pull the bracket out of the switch lever.

3 Disconnecting and Reconnecting SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1012
10. Hook a suitable padlock into the bracket and lock it. This will ensure that the switch lever cannot reconnect
inadvertently.
11. If external supply voltage is used, disconnect the supply voltage via upstream switching devices.
12. Disassemble the outer panel of the AC switch module
Disassembling and Mounting the Panels.
13. Verify that the switch state display of the AC disconnection unit is in the OPEN position.
14. Mount the outer panel of the AC switch module Disassembling and Mounting the Panels.
15. Ensure that 25minutes have passed after switching off the load-break switch -Q61.
16. Open the hatch on the AC side of the inverter Opening and Closing the Hatches.
17. Ensure that no voltage is present on the -X250 terminal.
−X 371
−X 373
123 123
−X 372
123
−X 540 −X 440 −X 740
−X 416
12
−X 250
1 2 3 4 5
☑ The inverter must be disconnected from all voltage sources on the AC side.
18. Disconnect all poles of the String-Combiner from voltage sources, secure against reconnection and remove fuses.
19. Measure the DC voltage at the terminal -X251. Measure DC+ against DC- and both poles against the grounding
conductor. The DC voltage must be 0V.
20. Open the hatch on the DC side of the inverter Opening and Closing the Hatches.
21. Ensure that no voltage is present for each DC input. Use the measuring points on the bottom of the fuse holders.
Tip: There are drill holes in the protective covers above the fuse holder. Through these drill holes you can
determine the voltage-free status with suitable test probes without having to disassemble the protective covers.
☑ The inverter is completely disconnected from all voltage sources.
3.2 Disconnecting the Medium-Voltage Transformer
Additionally required material (not included in the scope of delivery):
☐ 1 padlock. Diameter of the shackle: 5mm to 8mm
☐ Grounding and short-circuiting equipment
Procedure:
1. Ensure that the inverter is disconnected from all voltage sources (see Section3.1, page11).
2. Switch off the transformer panel of the medium-voltage switchgear (see manufacturer's documentation).
3. Ensure that no voltage is present.
4. Ground the transformer panel of the medium-voltage switchgear (see manufacturer's documentation).
5. Lock the circuit breaker for the medium-voltage switchgear using a padlock. This will protect the switch levers from
inadvertent reconnection.

3 Disconnecting and Reconnecting
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6. Attach magnetic signs indicating the name of the duly authorized person to the transformer panel.
7. Connect the grounding- and short-circuiting equipment to the AC busbars between the inverter and medium-
voltage transformer.
8. Disconnect any additional external voltage.
9. Cover or isolate any adjacent live components.
3.3 Reconnecting the Medium-Voltage Transformer
Connecting and disconnecting medium voltage
Only a duly authorized person trained in electrical safety is allowed to connect and disconnect the medium
voltage.
Requirements:
☐ The protective cover that protects the low-voltage area between the inverter and the MV transformer must be
mounted.
☐ The cover at the medium-voltage connection area on the MV Transformer must be mounted.
Procedure:
1. Remove the grounding- and short-circuiting equipment from the AC busbars between the inverter and MV
transformer.
2. Remove the magnetic signs indicating the name of the duly authorized person from the circuit breaker panel and
the "Do not operate!" magnetic sign. varistor.
3. Remove the padlock from the circuit breaker for the MV switchgear.
4. Open the grounding switch at the transformer panel of the MV switchgear.
5. Close the circuit breaker for the transformer panel of the MV switchgear.
6. Restart the inverter (see Section3.4, page13).
3.4 Reconnecting the Inverter
DANGER
Danger to life due to electric shock when live components are touched
High voltages are present in the live parts of the product. Touching live parts will result in death or serious injury due
to electric shock.
• Before reconnecting, make sure that the panels are mounted Disassembling and Mounting the Panels.
• Before reconnecting, make sure that the protective covers are mounted.
• Before reconnecting, make sure that the hatches are closed Opening and Closing the Hatches.
Procedure:
1. Actuate upstream switchpoint. Insert fuses in the String-Combiners or switch on the circuit breakers of the String-
Combiners.
2. Switch on the disconnection unit of the battery.
3. Ensure that the panel is mounted in front of the AC disconnection unit.
4. Remove the padlocks from the brackets of the DC switches -Q61 and -Q62.
5. Turn the DC load-break switch -Q62 to the ON position.
6. Turn the DC load-break switch -Q61 to the ON position.
7. Turn the key switch -S1 to Start.

4 Power-Generating Unit Protection Test SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1014
4 Power-Generating Unit Protection Test
The power-generating unit protection test is a fundamental part of PV system certification. For existing systems the
protection test is part of the certificate, for new systems it is part of the declaration of conformity. The power-generating
unit protection test helps grid operators and the certifying body to understand the proper parameterization and
function of the protection concept. To this end, the test procedure must be documented completely. The
parameterization specifications and the accuracy class requirements can be found in the grid connection guidelines or
are specified by the grid operator.
4.1 Safety during the Power-Generating Unit Protection Test
DANGER
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or
serious injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• After switching off the inverter, wait at least 25minutes before opening it to allow the capacitors to discharge
completely (see Section3.1, page11).
4.2 Calculating the Reference Voltage
Contractually agreed voltage VC corresponds to parameter VolRtg
The contractually agreed voltage at the grid feed-in point VC corresponds to the parameter VolRtg. VC – the
voltage contractually agreed on with the electric utility company – must be entered for the parameter VolRtg
during commissioning and calculation of the reference voltage.
An appropriate reference voltage must be selected for the testing device when performing the protection test. The
reference voltage can be calculated using the following formula.
Formula Symbol Unit Explanation
V0V Reference voltage of testing device
VCV Voltage at the grid feed-in point, contractually agreed with the grid op-
erator
i - Transmission ratio of the MVtransformer. The transmission ratio is the
ratio of TrfVolExLo to TrfVolExHi.
VolRtg* V Nominal line voltage of the utility grid (parameter)
TrfVolExLo** V Voltage on the low-voltage side of the external transformer (parameter)

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Formula Symbol Unit Explanation
TrfVolExHi** V Voltage on the high-voltage side of the external transformer (parame-
ter)
* This parameter takes the level of the medium voltage into account. ForVolRtg, the voltage at the grid feed-in point as contractually agreed
with the grid operator, must be entered for VRtg.
** These parameters take the transformation ratio of the tap changer of the medium-voltage transformer into account. During commissioning,
the tap changer is adjusted in such way that the terminal voltage of the medium-voltage transformer matches the nominal voltage of the
inverter as closely as possible.
4.3 Saving the Test Parameters
The inverters have 6 relevant parameter pairs each for voltage increase protection and voltage drop protection and 1
relevant pair of parameters for frequency increase protection and frequency drop protection.
Test parameters Set value / disconnection time
Voltage increase protection 1st level: V> / tV> VCtl.Hi1Lim / VCtl.Hi1LimTm
2nd level: V>> / tV>> VCtl.Hi2Lim / VCtl.Hi2LimTm
3rd level: V>>> / tV>>> VCtl.Hi3Lim / VCtl.Hi3LimTm
4th level: V>>>> / tV>>>> VCtl.Hi4Lim / VCtl.Hi4LimTm
5th level: V>>>>> / tV>>>> VCtl.Hi5Lim / VCtl.Hi5LimTm
6th level: V>>>>> / tV>>>> VCtl.Hi6Lim / VCtl.Hi6LimTm
Voltage drop protection 1st level: V< / tV< VCtl.Lo1Lim / VCtl.Lo1LimTm
2nd level: V<< / tV<< VCtl.Lo2Lim / VCtl.Lo2LimTm
3rd level: V<<< / tV<<< VCtl.Lo3Lim / VCtl.Lo3LimTm
4th level: V<<<< / tV<<<< VCtl.Lo4Lim / VCtl.Lo4LimTm
5th level: V<<<<< / tV<<<<< VCtl.Lo5Lim / VCtl.Lo5LimTm
6th level: V<<<<< / tV<<<<< VCtl.Lo6Lim / VCtl.Lo6LimTm
Frequency increase protection 1st level: f> / tV> HzCtl.Hi1Lim / HzCtl.Hi1LimTm
Frequency drop protection 1st level: f< / tV< HzCtl.Lo1Lim / HzCtl.Lo1LimTm
Access to parameters
The parameters needed for the power-generating unit protection test are only accessible after the installer
password has been entered. The installer password is changed during the initial installation. You can obtain the
changed installer password from the PV system operator.
Procedure:
1. Log into the user interface as an Installer.
2. In the main navigation, select and select Parameter from the drop-down list.
3. Save the test parameter values.

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Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1016
4.4 Performing the Power-Generating Unit Protection Test
Materials required for test:
☐ Three-phase testing device with the following properties:
– Trigger function for monitoring the potential-free contact
– Voltage range (depends on the power class, see operating manual) up to 759 VAC (line-to-line) with accuracy
better than 0.1%
– Logging function
☐ Laptop for changing the inverter parameters
☐ Data query sheet TR8
Requirements:
☐ The relevant test parameters have been saved (see Section4.3, page15).
☐ The tap changer setting on the MVtransformer complies with the specifications of the grid operator or the PV
system certificate.
☐ The parameter settings comply with the specifications of the grid operator or the PV system certificate.
Procedure:
1. Identify the measurement and disconnect terminal using the circuit diagram and reference designation.
2. Connect the outputs L1, L2 and L3 of the testing device to the
measurement inputs P1, P2 and P3 on the measurement and
disconnect terminal -X250 of the voltage measurement unit.
−X 371
−X 373
123 123
−X 372
123
−X 540 −X 440 −X 740
−X 416
12
−X 250
1 2 3 4 5
3. Connect the binary input of the testing device to the measurement inputs P4 and P5 on the measurement and
disconnect terminals of the voltage measurement unit.
4. Connect the testing device to the external voltage supply.
5. Connect the laptop to the service interface.
6. Log into the user interface as an installer.
7. Perform the power-generating unit protection test in accordance with the TR8 data request form. Set the test
parameters in accordance with the specifications of the grid operator or the PV system certificate.
• Voltage increase protection V> / tV> with the parameters VCtl.Hi1Lim and VCtl.Hi1LimTm
• Voltage increase protection V>> / tV>> with the parameters VCtl.Hi2Lim and VCtl.Hi2LimTm
• Voltage increase protection V>>> / tV>>> with the parameters VCtl.Hi3Lim and VCtl.Hi3LimTm
• Voltage increase protection V>>>> / tV>>>> with the parameters VCtl.Hi4Lim and VCtl.Hi4LimTm
• Voltage increase protection V>>>>> / tV>>>>> with the parameters VCtl.Hi5Lim and VCtl.Hi5LimTm
• Voltage increase protection V>>>>>> / tV>>>>>> with the parameters VCtl.Hi6Lim and VCtl.Hi6LimTm
• Voltage drop protection V< / tV< with the parameters VCtl.Lo1Lim and VCtl.Lo1LimTm
• Voltage drop protection V<< / tV<< with the parameters VCtl.Lo2Lim and VCtl.Lo2LimTm
• Voltage drop protection V<<< / tV<<< with the parameters VCtl.Lo3Lim and VCtl.Lo3LimTm
• Voltage drop protection V<<<< / tV<<<< with the parameters VCtl.Lo4Lim and VCtl.Lo4LimTm
• Voltage drop protection V<<<<< / tV<<<<< with the parameters VCtl.Lo5Lim and VCtl.Lo5LimTm

4 Power-Generating Unit Protection Test
SMA Solar Technology AG
Service Manual for Installers 17SC-UP_SCS-UP_EZE-SG-en-10
• Voltage drop protection V<<<<<< / tV<<<<<< with the parameters VCtl.Lo6Lim and VCtl.Lo6LimTm
• Frequency increase protection f> / tV> with the parameters HzCtl.Hi1Lim and HzCtl.Hi1LimTm
• Frequency drop protection f<< / tV<< with the parameters HzCtl.Lo1Lim and HzCtl.Lo1LimTm
8. Remove the measurement cables from the measurement and disconnect terminals.
9. Reconnect the inverter (see Section3.4, page13).

5 Contact SMA Solar Technology AG
Service Manual for InstallersSC-UP_SCS-UP_EZE-SG-en-1018
5 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:
• Device type
• Serial number
• Firmware version
• Event message
• Type of communication
• Type and number of PV modules
• Type and size of additional energy sources
• Optional equipment, e.g. communication products
• Detailed description of the problem
Deutschland
Österreich
Schweiz
SMA Solar Technology AG
Niestetal
Sunny Boy, Sunny Mini Central,
SunnyTripower, Sunny Highpower:
+495619522‑1499
Monitoring Systems, SMAEVCharger:
+495619522‑2499
Hybrid Controller:
+495619522-3199
SunnyIsland, SunnyBoyStorage,
SunnyBackup:
+495619522-399
SunnyCentral, SunnyCentralStorage:
+495619522-299
SMA Online Service Center:
www.SMA-Service.com
Belgien
Belgique
België
Luxemburg
Luxembourg
Nederland
SMA Benelux BVBA/SPRL
Mechelen
+3215286730
for Netherlands: +31302492000
SMA Online Service Center:
www.SMA-Service.com
Česko
Magyarország
Slovensko
SMA Service Partner TERMS a.s
+420387685111
SMA Online Service Center:
www.SMA-Service.com
Türkiye SMA Service Partner DEKOM
Telekomünikasyon A. Ş
+902422430605
SMA Online Service Center:
www.SMA-Service.com
France SMA France S.A.S.
Lyon
+33472229700
SMA Online Service Center:
www.SMA-Service.com
Ελλάδα
Κύπρος
SMA Service Partner AKTOR FM.
Αθήνα
+302108184550
SMA Online Service Center:
www.SMA-Service.com
España
Portugal
SMA Ibérica Tecnología Solar, S.L.U.
Barcelona
+34935635099
SMA Online Service Center:
www.SMA-Service.com
United Kingdom SMA Solar UK Ltd.
Milton Keynes
+441908304899
SMA Online Service Center:
www.SMA-Service.com

5 Contact
SMA Solar Technology AG
Service Manual for Installers 19SC-UP_SCS-UP_EZE-SG-en-10
Italia SMA Italia S.r.l.
Milano
+39028934-7299
SMA Online Service Center:
www.SMA-Service.com
Australia SMA Australia Pty Ltd.
Sydney
Toll free for Australia:
1800SMAAUS
(1800762287)
International: +61294914200
United Arab
Emirates
SMA Middle East LLC
Abu Dhabi
+9712234 6177
SMA Online Service Center:
www.SMA-Service.com
India SMA Solar India Pvt. Ltd.
Mumbai
+912261713888
ไทย Service Partner for String inverter:
Solar Power Engineering Co., Ltd.
333/7,8,9 United Tower Building 4th
floor.
Soi Sukhumvit 55 (Thonglor 17), Klong-
ton Nua, Wattana,
10110 Bangkok, Thailand
+6620598220
[email protected]
Service Partner for Utility:
Tirathai E & S Co., Ltd
516/1 Moo 4, Bangpoo Industrial Es-
tate
Sukhumvit Road, T. Praksa, A. Muang
10280 Samutprakarn, Thailand
+631799866
[email protected]
대한민국 Enerone Technology Co., Ltd
4th Fl, Jungbu Bldg, 329,
Yeongdong-daero, Gangnam-gu,
Seoul, 06188, Korea
[phone]
Argentina
Brasil
Chile
Perú
SMA South America SPA
Santiago de Chile
+56228202101
South Africa SMA Solar Technology South Africa
Pty Ltd.
Cape Town
08600SUNNY
(0860078669)
International: +27(0)218260699
SMA Online Service Center:
www.SMA-Service.com
Other coun-
tries
International SMA Service Line
Niestetal
00800SMASERVICE
(008007627378423)
SMA Online Service Center:
www.SMA-Service.com

www.SMA-Solar.com