RCT Power DC 6.0 SP User manual

MANUAL
Power Storage DC 6.0 SP
Single phase hybrid inverter
EN
EN
EN
EN
EN
EN
EN
EN

II
Table of Contents
1ABOUT THIS MANUAL.........................................................................................................................................1
2SAFETY INSTRUCTIONS........................................................................................................................................3
3UNPACKING AND STORAGE ................................................................................................................................5
4PRODUCT PRESENTATION ...................................................................................................................................7
5MECHANICAL INSTALLATION.............................................................................................................................13
6ELECTRICAL INSTALLATION................................................................................................................................17
7COMMUNICATION PORTS.................................................................................................................................28

III
8COMMISSIONING..............................................................................................................................................38
9RCT RESS APP....................................................................................................................................................40
10 SYSTEM CONNECTION DIAGRAM ......................................................................................................................70

IV
11 SYSTEM DECOMMISSIONING ............................................................................................................................72
12 LED INDICATORS ...............................................................................................................................................73
13 ERROR MESSAGES AND TROUBLESHOOTING ....................................................................................................74
14 MAINTENANCE..................................................................................................................................................78
15 EXCLUSION OF LIABILITY ...................................................................................................................................79
16 TECHNICAL DATA ..............................................................................................................................................80
17 CONTACT ..........................................................................................................................................................83

V
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 confirms that the 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 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, Scope of this document and Legal Regulations
This document is applying to the Power Storage DC 6.0 SP.
Power Storage DC 6.0 SP is referred to as "Inverter", " Power Storage DC ", "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 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 inverter.
This symbol indicates that the user manual must be read and understood before the
device is put into operation.
HIGH VOLTAGE WARNING! Indicates hazardous high voltagesare present, which, if
not avoided, will result in death or seriousinjury. Thus, only authorized and trained
personnel should installand/or maintain this product.

2
Symbols and
References
Description
After disconnecting the electrical connections, wait a minimum of 5 minutes before
opening the unit.
Hot surface!
Equipment grounding conductor (PE).
This product must not be disposed of as normal household waste.
CE mark
The inverter complies with the requirements of the applicable
CE guidelines

3
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 and safety regulations.
They know and use appropriate personal protective equipment.
Before starting installation or commissioning, read through the entire manual and note all DANGER! WARNING! CAUTION!
and NOTICE! statements.
2.2 Safety Procedures
The inverter 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.

4
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 housing.
During standard operation of the inverter, some parts of the inverter's housing can become hot.
•Use care when touching the housing while the inverter is operating.
•Do not cover the inverter (especially not the top).
•All electrical installations must be carried out in accordance with 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.

5
3Unpacking and Storage
3.1 Unpacking and Inspection
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.
•Check the packing case for any visible damage.
•Check the scope of delivery for completeness according to the packing list.
•Check the inner contents for damage after unpacking.
Please inform the transport company immediately if you notice any damage to the packaging or the inverter. Your specialist
dealer will be happy to assist you if necessary.
Do not install, wire or operate the inverter if any damage has been detected.
Do not dispose of the original packing case. It is recommended to store the device in the original packing case when the
product is decommissioned.
3.2 Scope of Supply
Check the contents of the shipment for completeness in accordance with Fig. 3-1.
Fig. 3-1 Scope of supply
Pos_No
Description
1
1x inverter
2
1x Inverter wall mounting bracket
3
1x Documentation
4
3x DC connector *
5
1x AC connector
6
1x WIFI antenna
7
1x Screw accessory
8
COM Cable Gland
9
Loading Guide
10
PE OT Terminal

6
11
LAN to USB cable
*Note：3 sets DC Connector.
3.3 Inverter Storage
If the equipment is not to be installed or used immediately, please ensure that the storage environment meets the following
requirements:
•Do not unpack the outer package or throw the desiccant away, and check it regularly (every three months is
recommended). If the package is damaged due to moth bites, please replace the package in time. If the inverter is
unpacked and not immediately put into use, place the inverter in its original package, retain the desiccant, and seal it
with tape.
•Make sure the temperature and humidity of the storage environment are appropriate and no condensation. The
ambient air must not contain corrosive or flammable gases.
•Store the equipment in a clean place and prevent dust and water vapor erosion. Do not suffer from rain or ground
water erosion.
•The height and direction of the stacking inverters should follow the instructions on the packing box.
•The inverters must be stacked with caution to prevent them from falling.
•If the inverter has been long term stored, it should be checked by professionals before being put into use.

7
4Product Presentation
4.1 Intended Use
The inverter is stationary 1-phase inverter 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 inverter 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 is not liable for damages resulting from misuse of the device.
Any misuse terminates the warranty, guarantee and general legal liability of the manufacturer.
4.2 System solution
The energy received from the connected solar generator and the battery is converted into grid-compliant AC current and
feed into the grid. PV energy can also be charged directly into the battery on the DC side.
Fig. 4-1 Intended use of the inverter with the Power Battery in the PV system.
Item
Description
Comment
A
PV Panel
Monocrystalline silicon; polycrystalline silicon
B
Battery
RCT Power Battery 3.8 ~ 11.5kWh, 5 ~ 15kWh
C
Inverter
RHS-6K-H
D
Dwelling
Domestic electricity consumers
E
Power Switch Box
OFF Grid Mode optional part. In the event of a power failure, the system
switches to back-up operation mode.
F
Power Sensor
Current sensors to collect AC power measurements
G
Public grid
230V, L/N/PE
H
Back-up
Connect to domestic back-up load

8
4.3 Working Mode
There are four working modes of the inverter, Back-up, Self-Consumption, TOU, Storm watch.
4.3.1 Backup-reserve
In this mode, battery is as a backup power supply and always keep sufficient energy. The inverter monitors the grid, and
when the grid is down it automatically switches to backup mode, disconnecting from the grid and supplying power to
backed-up loads.
1) Load priority: charging the Battery -> Load consumption -> feeding to the GRID
When the PV energy is sufficient, first charges the battery, then supply power to the load, finally feed to the Grid.
2) Power priority: PV -> GRID, NONE from battery
When the load power consumption is too large, first from the PV energy, then from the Grid. Under normal conditions, the
battery does not supply energy to the load, only when the grid is down the battery as a backup power supply to the backup
load.
Fig. 4-2 Back up mode
4.3.2 Self-power
In this mode, the PV energy is preferentially used by local load (main load and backup load) to improve the self-consumption
rate and self-sufficiency rate. The battery is automatically charged and discharged to meet consumption needs and reduce
the amount of electricity purchased from the grid.
1) Load priority: Load consumption -> charging the battery ->feeding to the GRID
When the PV energy is sufficient, first supply power to the load, then charges the battery, finally feed to the Grid.
2) Power priority: PV -> battery -> GRID
The PV energy is as the main energy to supply the load, if the PV energy cannot satisfy the needs of local load, then the
battery will discharge to the load, and finally use the power from GRID. In the same time, the inverter monitors the grid, and
when the grid is down it automatically switches to backup mode, disconnecting from the grid and supplying power to
backed-up loads.

9
Fig. 4-3 Self-Consumption
4.3.3 TOU
In this mode, users can manage the energy according to their own needs, and set the daily regular charging and discharging
configurable profile on the app. The system operates according to a configurable charge/discharge profile - a Time-of-use
(TOU) arbitrage profile, in which the battery is charged from the PV system or grid when tariffs are low, and discharged
when tariffs are high.
Fig. 4-4 Time-of-use (TOU)
4.3.4 Weather watch
In this mode, the system will allow battery charging from Grid in case it can be charged fully as soon as possible to against
the grid outage. Battery is as a backup power supply and always keep sufficient energy.

10
4.4 Product Specification
4.4.1 Component Description
Fig. 4-5 Product Specification
Pos_No
Component
Description
A
PV Terminal
Three separate Solar generator inputs (PV1 & PV2 & PV3)
B
BAT Terminal
2 x BMS input (BAT1 &BAT2)
C
Communication Port
EU version: ANT /ETH/ Power switch / Power sensor / BMS1 / BMS2 /
RCR /RS485/ IO/S0 / MFR
AUS version: ANT /ETH/ Power switch / Power sensor / BMS1 / BMS2 /
DRM /RS485
D
AC Terminal
230V (L, N, PE)
E
PE Terminal
PE connection bar
F
LED Indicators
3 x LED Indicators
G
DC Switch
1 x DC Switch

11
4.4.2 Type Plate and Warning Signs
Fig. 4-6 Type plate
Pos_No
Description
1
Trademark and model
2
Technical data
3
Compliance symbols
4
Serial number, company name and country of origin
Warning! High leakage currents. It is essential to establish an earthing connection
before connecting to the power supply circuit (AC mains)!
Hot surface! The housing can heat up during operation.
After disconnecting the electrical connections, wait a minimum of 5 minutes before
opening the unit.
CE mark
The inverter complies with the requirements of the applicable
CE guidelines
②
③
④
①

12
TUV Rheinland certified.
This product must not be disposed of as normal household waste.
This symbol indicates that the user manual must be read and understood before the
device is put into operation.

13
5Mechanical Installation
5.1 Pre-installation inspection
Check the outer package
Before unpacking the outer package of the inverter, check the outer package for visible damage, such as holes, cracks or
other signs of possible internal damage, and check the inverter type. If there is any abnormal packaging or inverter type
does not match, do not open, and contact your dealer as soon as possible.
Check delivery
After unpacking the inverter, check that the deliverables are complete and there is no obvious external damage. If anything
is missing or damaged, contact your dealer.
5.2 Installation tool preparation
Category
Tool
Installation
Diagonal pliers
Wire stripper
Hammer drill
Vacuum cleaner
RJ45 crimping tool
Rubber hammer
Multimeter
Marker
Level
Heat shrink tube
Cable tie
Scissors
Straight insulated
torque screwdriver
Phillips insulated
torque screwdriver
Terminal crimping
Personal protective
articles
Insulating gloves
Goggles
Goggles
Safety shoes

14
Category
Tool
Safety helmet
Reflective vest
Protective gloves
5.3 Select mounting location
Danger to life or serious injury from fire or explosions!
•Do not mount the inverter on a flammable surface.
•No combustible materials must be stored within 3m (9.84ft) of the inverter.
•The inverter must not be installed in areas and rooms subject to explosion
hazards.
The mounting surface must be made of flame-
retardant material.
Flammable and explosive materials are not allowed in
the installation environment.
The location of the Inverter must be free of
obstructions and protected from dust, snow, rain and
direct thermal radiation (e.g. solar radiation, central
heating radiators, etc.).
The following requirements must be met:
Relative humidity 5 ... 95 % (non-condensing).
Ambient temperature -25℃~ 60℃(-13 ... 140 °F).
The mounting surface must be solid and able to
permanently support the weight of the inverter unit.
The selected- location must be accessible easily and
safely at all times. Ensure no additional aids (e.g.
ladder, scaffolding) are required for access.
Mount the inverter in an upright or slightly backward
inclined position.

15
Required minimum distances to allow sufficient free
convection of air for cooling the unit.
To prevent mutual heating, inverters must not be
mounted on top of each other.
It is very important to ensure that the inverter is
ventilated and dissipated well. Please install the
inverter in a ventilated environment
•Ensure sufficient air convection for the inverter. Overheating of the inverter
due to poor cooling will result in reduced performance.
•The inverter can produce noise levels of up to 30db during operation. Ensure
the inverter is mounted in a way that people cannot be disturbed by the
operating noise.
5.4 Handling Inverter
•During transportation, turnover, installation and other operations, you must meet the laws, regulations and
relevant standards of the country or region where you are located.
•Before installation, move the inverter to the installation site. To avoid personal injury or equipment damage, pay
attention to the following:
1. Assign personnel according to the weight of the device. Otherwise, personnel may be injured if the device exceeds
the weight that can be carried by the human body.
2. Wear safety gloves to avoid injury.
3. Ensure that the device is balanced to avoid falling.
4. If the inverter is placed directly on the hard ground, it will cause damage to the metal shell, so the sponge pad or
foam should be laid under it.
5.5 Wall Mounting
Procedure:
Step 1. Place the locating guide plate to a proper on the wall. Mark the hole position, then drill holes in the wall.