RCT Power Storage DC 8.0 User manual

MANUAL
Power Storage DC 8.0 / 10.0
EN

I
Copyright
Copyright © 2016 RCT Power GmbH. All rights reserved.
Any form of reproduction of this document in whole or in part without the written permission of RCT Power GmbH
constitutes a violation of EU and international copyright laws and will be prosecuted. This includes but is not limited to
duplication, distribution, translation or transmission by electronic or mechanical means, photocopying, recording or storage
on data carriers.
We explicitly reserve the right to make technical changes to improve the device or increase its safety standard. These
changes do not require a separate notification.
Responsible content editor: RCT Power GmbH
In this user manual, we refer to products and product names that are registered trademarks. This is done for information
purposes only and does not constitute a misuse of trademark regulations and laws.
The passages in the user manual referring to these products do not represent the product's original documentation.
About us:
RCT Power GmbH
Line Eid Str. 1
D - 78467 Konstanz, Germany
Tel.: [phone]
Mail: info[at]rct-power.com
Internet: www.rct-power.com
Document number: 03/2021

II
Table of contents
1ABOUT THIS MANUAL.........................................................................................................................................1
1.1 Validity, purpose and scope of this document and legal regulations.........................................................................1
1.2 Explanation of Symbols and References.....................................................................................................................1
2SAFETY INSTRUCTIONS........................................................................................................................................2
2.1 Personnel and Qualifications......................................................................................................................................2
2.2 Safety Procedures.......................................................................................................................................................3
3PRODUCT PRESENTATION ...................................................................................................................................4
3.1 Intended use...............................................................................................................................................................4
3.2 Product specification ..................................................................................................................................................5
3.2.1 Scope of supply...........................................................................................................................................................5
3.2.2 Component description..............................................................................................................................................5
3.2.3 Type plate and warning signs .....................................................................................................................................7
4MECHANICAL INSTALLATION...............................................................................................................................8
4.1 Select mounting location............................................................................................................................................8
4.2 Mounting ..................................................................................................................................................................10
5ELECTRICAL INSTALLATION................................................................................................................................11
5.1 Connections overview ..............................................................................................................................................11
5.2 AC connection...........................................................................................................................................................11
5.3 Configuration of the PV inputs .................................................................................................................................12
5.4 DC connection ..........................................................................................................................................................13
5.4.1 DC connector assembly ............................................................................................................................................14
5.4.2 DC Battery connection..............................................................................................................................................16
5.5 Disconnecting voltage sources .................................................................................................................................17
5.6 Additional Protective Conductor Connection...........................................................................................................18
5.7 Connection –Power Switch......................................................................................................................................18
5.8 Connection –Power Sensor......................................................................................................................................20
6COMMUNICATION PORTS.................................................................................................................................21
6.1 I/O circuit board .......................................................................................................................................................21
6.1.1 RS485 - X102 Interface .............................................................................................................................................22
6.1.2 Multifunction relay X100 Interface...........................................................................................................................22
6.1.3 Ripple control signals X101 Interface .......................................................................................................................23
6.1.4 Digital Inputs and Outputs X103 Interface ...............................................................................................................23
6.2 Connection Ethernet Interface.................................................................................................................................24
6.3 RJ45 connections for Power Battery, Power Sensor and Power Switch...................................................................25
6.3.1 Wiring the RJ45 interfaces........................................................................................................................................25
7COMMISSIONING..............................................................................................................................................26
7.1 Commissioning .........................................................................................................................................................26
7.1.1 Switch on the Inverter ..............................................................................................................................................26
7.1.2 Accessing the inverter ..............................................................................................................................................27
7.1.3 Configuring the Inverter ...........................................................................................................................................28
7.1.4 Setting Solar plant peak power and External power reduction................................................................................29
7.1.5 Configuring the Battery ............................................................................................................................................30
7.1.6 Configuring the Power Sensor (during operation) ...................................................................................................31
7.1.7 Expert Settings Battery.............................................................................................................................................32
7.1.8 Connecting the inverter to a network via a Wi-Fi connection..................................................................................34
7.1.9 Connecting the inverter to a network via an Ethernet connection..........................................................................37

III
7.1.10 Internet based remote access to the inverter..........................................................................................................39
7.1.10.1 Remote access via a FRITZ!Box with port forwarding and DynDNS .........................................................................39
7.1.10.2 Remote access via a FRITZ!Box by port forwarding and a MyFRITZ! account..........................................................46
7.1.10.3 Remote access via VPN using DynDNS or a MyFRITZ! account ................................................................................55
7.2 RCT Power APP Description......................................................................................................................................66
7.2.1 Overview of the RCT Power APP Menu ....................................................................................................................66
7.2.2 Detailed Description of the RCT Power APP Menu Items.........................................................................................67
7.2.2.1 Online .......................................................................................................................................................................67
7.2.2.2 History ......................................................................................................................................................................67
7.2.2.3 Device .......................................................................................................................................................................67
7.2.2.4 Network....................................................................................................................................................................69
7.3 Display ......................................................................................................................................................................70
7.4 Exporting RCT Power APP log data to MS Excel for further processing ...................................................................72
7.4.1 Abbreviations of the individual data records and their definitions..........................................................................72
7.4.1.1 Data records "Day” ...................................................................................................................................................72
7.4.1.2 Data records "Week" and "Month"..........................................................................................................................73
7.4.1.3 Data records "Year" and "Total"...............................................................................................................................73
7.4.2 Exporting Data records.............................................................................................................................................74
7.4.3 Importing RCT Power APP log data to an MS Excel spreadsheet .............................................................................78
8CONFIGURATION ..............................................................................................................................................81
8.1 Power reduction .......................................................................................................................................................81
8.1.1 Dynamic power reduction at the house connection point.......................................................................................82
8.1.2 Power reduction using a ripple control receiver ......................................................................................................83
8.2 Multifunction Relay ..................................................................................................................................................84
8.2.1 Multifunction Relay deployed in "Load" mode ........................................................................................................84
8.2.2 Multifunction Relay deployed in "Alarm" mode ......................................................................................................84
8.3 Configuration of the Emergency Stop Switch...........................................................................................................85
8.4 Configuration of the External Display.......................................................................................................................86
8.5 Networking ...............................................................................................................................................................87
8.5.1 Connecting a Power Storage DC and a Power Inverter to the same network..........................................................87
8.5.2 Connecting a Power Storage DC and third-party inverter to the same network .....................................................89
8.5.3 Connecting multiple RCT Power inverters in a LAN / WLAN network......................................................................91
8.5.3.1 Integration Master device ........................................................................................................................................92
8.5.3.2 Integration Slave device ...........................................................................................................................................94
8.5.3.3 System Visualisation.................................................................................................................................................96
8.5.3.4 Firmware update over network connection.............................................................................................................98
8.6 Increase battery capacity with additional battery modules (series connection) .....................................................99
8.6.1 Preparing the existing battery system....................................................................................................................100
8.6.2 Adding additional battery modules ........................................................................................................................103
8.6.3 Calibrating the new system ....................................................................................................................................103
8.7 Connecting a ModBus meter to the Power Storage DC (with or without radio transmitter module) ...................105
8.8 Software updates for inverter and battery ............................................................................................................107
9ERROR MESSAGES AND TROUBLESHOOTING ..................................................................................................107
10 MAINTENANCE................................................................................................................................................111
11 EXCLUSION OF LIABILITY .................................................................................................................................111
12 TECHNICAL DATA ............................................................................................................................................112

IV
PREFACE
Thank you for choosing the RCT Power Storage DC!
You have purchased an innovative, high-quality product with unique features and consistently high efficiency.
RCT Solar Inverters are transformerless, highly flexible and robust. With this device, you will always achieve the highest
possible yield from your PV system.
Solar modules, inverters, cables and other components of the photovoltaic system are
electrical devices. During installation, wiring, grid connection, operation, maintenance and
service they can cause various hazards.
Please read the documents supplied with the product carefully and follow the instructions
and device information to avoid material damage and personal injury.
Keep this manual in a safe place for future reference.
Declaration of conformity
RCT Power GmbH confirms that the Power Storage DC inverter described in this document is in compliance with the essential
requirements and provisions of the following European Union directives:
• RED Radio Equipment Directive (RED) 2014/53/EU
• Electromagnetic Compatibility Directive (EMC) 2014/30/EU
• Low Voltage Directive (LVD) 2014/35/EU
• Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (RoHS2)-2011/65/EU
The detailed declaration of conformity can be found under:
www.rct-power.com

1
1About this Manual
1.1 Validity, purpose and scope of this document and legal regulations
This document is valid for the Power Storage DC models 8.0 and 10.0.
Power Storage DC 8.0 and Power Storage DC 10.0 are referred to as "Inverter", "Hybrid Inverter", "Device" or "Product"
unless otherwise stated.
This installation manual provides general instructions for installing, wiring, commissioning and operating the inverter and the
battery.
The content of this manual is regularly updated and revised as a part of the continuous product development.
The current document version can be found at: www.rct-power.com.
We explicitly reserve the right to make technical changes which improve the device or increase its safety standard. These
changes do not require a separate notification. RCT Power GmbH is not liable for damages resulting from the use of this
document.
This manual does not supersede existing laws, regulations, rules, standards or conventions.
The warranty conditions are enclosed with the device. No further warranty claims can be derived from this document.
1.2 Explanation of Symbols and References
It is important to follow the references in the manual during the installation, operation and maintenance of the Power
Inverter. The table below shows the warning signs and symbols used in the manual.
Symbols and
References
Description
This symbol indicates a direct imminent danger. If the safety regulations are not observed,
this may result in death, personal injury or serious damage to property.
This symbol indicates a direct imminent danger of medium risk. If the safety regulations are
not observed, this may result in death, personal injury or serious damage to property.
This symbol indicates a direct imminent danger of low risk. If the safety regulations are not
observed, it might result in minor or moderate material damage.
This symbol indicates a potentially hazardous situation which, if not avoided, could result in
material damage to equipment or property.
This symbol indicates important information and hints. They will help you to better
understand the functionality of the Power Storage DC.

2
2Safety Instructions
2.1 Personnel and Qualifications
The inverter and the battery must only be installed, wired, connected, commissioned and
serviced by qualified personnel to prevent material damage or personal injury.
Qualified personnel authorised to perform the tasks described in this manual must have the following skills and technical
expertise:
• They are trained to install electrical equipment.
• They understand the technical functionality of an inverter
• They are familiar with lithium iron phosphate (LiFeP04) accumulators.
• They have read and understood the documents shipped with the unit.
• They know and use the appropriate tools and equipment to perform the tasks described in the manual.
• They are familiar with all current laws and applicable regulations, standards and directives for electrical equipment.
• They are familiar with the safety requirements and guidelines for electrical equipment.
• They are familiar with occupational health law and safety regulations.
• They know and use appropriate personal protective equipment.

3
2.2 Safety Procedures
The Power Storage DC was developed and tested in strict accordance with international safety regulations.
All safety instructions relating to electrical and electronic equipment must be complied with during installation, operation
and maintenance.
Danger to life or serious injury due to electric shock! High voltages are present in cables and
inner parts of the inverter if it is connected to the grid (AC / AC voltage source) or the solar
generator (DC / DC voltage source) is exposed to sunlight.
• Qualified personnel must perform any work that involves wiring, connecting or opening
the inverter case.
• Important: Both voltage sources (DC / solar generator and AC / grid) must be switched
off before any electrical work is carried out on the inverter.
• Turn the DC Switch into the 0 position to disconnect the DC voltage.
• Activate the circuit breaker or remove the fuse to disconnect the mains voltage (AC). Do
not reconnect until the work has been completed.
• To disconnect the battery voltage, both voltage sources (DC / solar generator and AC /
mains) must be switched off and the battery switch on the master must be set to "0".
• Allow a minimum of 10 minutes for the capacitors to fully discharge and then check the
voltage with a suitable measurement device.
• Ensure that other persons stay away from cables and internal components.
Risk of injury due to electric shock!
Installation, service and maintenance work must only be carried out by a qualified electrician.
• Do not drop the device. Do not expose it to knocks or pressure.
• Only switch on again after all electrical work has been completed.
Risk of burns on hot parts of the inverter enclosure.
Parts of the inverter enclosure can become hot during standard operation.
• Use care when touching the enclosure while the inverter is operating.
• Do not cover the Power Storage DC (especially not the top).
• All electrical installations must be carried out according to local and national standards
and guidelines.
• Contact your local energy supplier or grid operator before connecting the inverter to
the grid.
• Ensure that electrically conductive surfaces of the entire PV system are grounded to
prevent personal injury.
• A malfunction can impair inverter safety. Do not operate or start the inverter if it shows
visible damage or if the displayed error message is unclear.
• The inverter does not contain any parts to be serviced by the owner. Please contact
qualified personnel locally for servicing work on the inverter.
• Only use devices and accessories approved by the manufacturer. Do not make any
changes to the device. Do not remove the type plate.

4
3Product Presentation
3.1 Intended use
Power Storage DC 8.0 and 10.0 are stationary 3-phase inverters with integrated battery charging unit.
The energy received from the connected solar generator and the battery is converted into grid-compliant AC current and fed
into the grid. PV energy can also be charged directly into the battery on the DC side.
Please note:
The Power Storage DC is not designed for other use cases or connections to other devices.
Any deployment of the device that is different from the intended use is considered a misuse.
RCT Power GmbH is not liable for damages resulting from misuse of the device.
Any misuse terminates the warranty, guarantee and general legal liability of the manufacturer.
Fig.
3-1 Intended use of the Power Storage DC with the Power Battery in the PV system.
Pos
Description
Comment
A
PV Generator
Monocrystalline silicon; polycrystalline silicon and thin film without
grounding and protection class II
B
Battery
Power Battery 3.8, 5.7, 7.6, 9.6, 11.5
C
Inverter
Power Storage DC 8.0, 10.0
D
Household
Domestic electricity consumers
E
Power Switch
Switches to island operation mode in the event of a power failure.
F
Power Sensor
Current sensors for AC power measurements
G
Public grid
TT, TN-C, TN-S, TN-C-S

5
3.2 Product specification
3.2.1 Scope of supply
Our products are inspected for proper condition before shipment. Despite careful packaging, transport damage can occur.
The transport company usually has to take responsibility for this damage.
Please inform the transport company immediately if you notice any damage to the packaging or the Power Storage DC. Your
specialist dealer will be happy to assist you if necessary.
Do not install, wire or operate the Power Storage DC if any damage has been detected.
Check the contents of the shipment for completeness according to Fig. 3-2.
Fig. 3-2 Scope of supply
Pos.
Description
1
1x Power Storage DC
2
1x Inverter wall mounting bracket
3
4x PV Stick + (Weidmüller) , 4x PV Stick –(Weidmüller)
4
1x Setup manual
3.2.2 Component description