RCT Power DC 8.0 User manual

SETUP
Installation
Power Storage DC 8.0 / 10.0
This setup manual contains a short instruction required for
installing, wiring, commissioning and operating the inverters.
For further instructions on installing or operating, please refer
to the detailed user manual, which you can access via
www.rct-power.com.
RCT Power GmbH reserves the right to make changes to
specifications or documents without prior notice.
RCT Power GmbH shall not be responsible for any damages
resulting from use of this document.
This document does not replace any applicable laws,
regulations, standards or codes.
Warranty conditions come enclosed with the device. No
warranties can be derived from this document.
Intended Product Usage
To prevent personal injury or property damage,
the inverter must only be installed, wired,
connected, commissioned, maintained and
serviced by qualified personnel:
•
Trained in installing electrical devices.
•
Familiar with all applicable laws, regulations, standards and
codes for electrical devices.
•
Familiar with safety requirements and safety-related
guidelines for electrical devices.
•
Familiar with work protection laws and regulations.
•
Using the appropriate personal protective equipment.
Power Storage DC 8.0 and 10.0 are stationary 3-phase string
inverters with integrated battery charger. They convert direct
current (DC) supplied by the PV array and the battery into
alternating current (AC), which can be fed into the electricity
grid.
They are not designed for any other application or connection
to other devices.
Any use that differs from or goes beyond the intended usage is
considered misuse. RCT Power GmbH shall not be liable for any
damage resulting from misuse.
Any misuse will terminate warranty, guarantee and general
liability of the manufacturer.
In 7 Steps to the installed system
EN
Symbols
Level of risk
Explanation
high
medium
low
Immediate danger
of death or serious
injury
Immediate danger
of minor or
moderate injury
Danger of
equipment or
property damage

2
Assembly and mounting.
(Section 2, p.3).
Electrical connection of the devices.
(PV, grid, battery section 3, p.4-5 /
Communication section 4&5, p.7-8 and section 7, p-11 /
Power Switch, Power Sensor section 6, p.9-10).
Switch on Inverter (switch on fuses).
(Section 8.1, p.12).
Access to the inverter via APP.
(Steps 1 to 7 under section 8.2, p.13).
Configure the Power Switch, if available.
(See Manual, Power Switch).
Configure the inverter, select the land and norm.
(Steps 8 to 11 in the setup section 8.3, p14).
Configure the battery and Power Sensor classification.
(Steps 12 to 16 in the setup section 8.3, p.14-15).
The configuration of the battery is now complete.
After the inverter has checked the specifications, it starts charging the battery.

3
[1] Scope of Delivery
Fig.1
Look over
user manual.
Wait 10 minutes after
disconnection before
touching inner parts.
Hot surface
Electrical device:
grounding necessary
[2] Inverter Mounting
Item
Description
A
Setup manual
B
PV input- and battery connectors (Weidmüller
PV-Stick)
C
Wall bracket
D
Inverter
a
LCD display for information on inverter operation
b
DC switch
c
DC PV plugs
d
Cable entries for communication ports
e
Cable entry for AC cable
f
Screw hole for additional protective grounding
g
Name plate with technical data, serial number, symbols
h
DC battery plugs
i
RJ45 connectors:
Battery, Power Sensors and Power Switch
Item
Description
A
Select non-flammable, firm wall. Room may not contain
highly flammable goods, liquids or gas.
B
Protect from snow, rain, direct sunlight and dust.
Observe allowed ambient temperature (-25 … 50°C).
Maximum degree of pollution PD2.
C
Mount in upright position. Ensure enough space for easy
access. Make sure wall supports inverter weight.
D
Minimum clearance: half of inverter width at both sides
and half of height at top and bottom.
E
Do not place inverter in closed cabinet.
Step
Description
1
Attach wall bracket firmly to wall with 3 to 6
screws (ø 6 to 8 mm), matching wall plugs and
washers (outer ø min. 18 mm). Material not
included in delivery.
2
Take out locking screw of inverter at the top
left and right sides.
Hook inverter onto wall bracket and fix
locking screw back.

4
[3] Electrical Connection
[3.1] Overview Connection Parts
Fig. 2
The electrical connection for a second parallel battery is provided.
The function for a second parallel battery is currently not integrated.
A parallel battery cannot be operated at present.
[3.2] AC Connection
Risk of death or injury due to electric shock!
While the inverter is connected to grid (AC voltage
source), to PV array which is exposed to sunlight (DC
voltage source) or to the battery (DC voltage source),
high voltage is present in cables and inner parts of
inverter.
•
Important: All voltage sources (DC / PV-generator, DC /
battery and AC / utility grid) must be disabled before any
electrical work.
To disable PV-generator DC voltage connection turn DC
switch to 0-position and wait 10 minutes before continuing.
To disable AC voltage connection turn off AC switch, main
breaker or fuse. Make sure, other persons don’t switch back.
Do not enable voltage connections until work is finished.
•
To disable DC battery voltage connection both voltage
sources (DC / PV-generator and AC / utility grid) must be
disabled.
•
During AC connection: Do not exchange L, N and PE wires!
•
Make sure other persons keep away during electrical work.
Risk of death or injury due to electric arc!
Disconnecting DC plugs under load can cause
electric arcs.
Risk of damage due to improper installation
and operation or misuse.
•
Contact local utility company or grid operator before
connecting inverter to grid.
•
Provide for an AC disconnection device
(typical miniature circuit breaker 3 pole 6kA, B-
characteristic 25A).
•
If required in country or installation, install a
residual-current device (RCD), or residual-current
circuit breaker (RCCB).
•
Inverter contains no owner serviceable parts.
Contact local authorized personnel for service.
•
Do not remove name plate.
•
Only RCT Power certified batteries complying with
the demands of the certain region are allowed to be
used.
Item
Description
A
AC terminal block for L1, L2, L3, N and PE phases.
B
Clamps for parallel DC mode.
C
Communication board.
D
RJ45 Connectors for
Battery, Power Sensor and Power Switch.
E
RJ45 socket for
connection of the Ethernet interface.

5
[3.3] DC Connection
[3.4] DC Parallel Mode
Material not included in delivery.
This section applies only, if several Strings with an equal
amount of modules are to be connected in parallel and the
maximum input current per input therefore exceeds 14A.
Step
Description
1
Remove cover of inverter.
2
Connect clamps X101 and X104.
(Show Fig. 2, B).
To prevent personal injury or property
damage, make sure that there is no
PV-DC connector plugged and DC-switch is
“0” in during this installation.
[3.5] DC Battery Connection
Step
Description
1
Remove cover of inverter.
Locate AC terminal block (Fig. 2, A).
2
Feed cable through AC entry (Fig. 1, e). Push
down clamps to insert L1, L2, L3, N and PE.
3
Tighten swivel nut of cable entry.
Step
Description
1
Do not turn plug parts before inserting the cable.
Select correct plugs for polarity of PV and battery
strings.
2
Push cable into plugs straight until the spring
clamp locks.
3
Turn lower part of plug shut.
4
Make sure DC switch is “0”.
Plug corresponding plus and minus poles into
adjacent PV plugs of inverter (Fig. 1, c).

6
Make sure the DC switch of the inverter is set to “0”, the battery ON/OFF switch set to “0” and AC through the main breaker or fuse
is disconnected.
Plug the battery connectors to the inverter.
(The connection cables from the inverter to the battery is not included).
[3.6] Second Protective Inverter Grounding
Material not included in delivery.
If required in the country of installation, attach a second protective earth connection to the housing.
[4] I/O-Board Communication Connection
Fig.3
Communication Ports
[4.1] Connection of Communication Ports
Item
Description
1
X102: serial RS485 interface.
2
X100: Multifunctional Relay, max. 24 V,1A.
3
X101, Power management: 4 digital inputs for
potential free relay contacts.
4
X103: Digital in/out (S0-signals),
max. Input 24 V,
max. output 5 V, 10 mA.
DC cable -
DC cable +

7
[4.2] Wiring of Communication Ports
[5] RJ45 Connectors for Power Battery, Power Sensor and Power Switch communication
The inverter communicates with the batteries via the CAN-Bus.
If the inverter is delivered with an optional Power Sensor or Power Switch please refer to user manual of these items for
further detailed commissioning information.
Fig. 4
RJ45 –Communication Ports
Select correct port (see Fig. 4 ) and insert cables in RJ45 connectors labeled with the suitable port .
[5.1] Wiring of RJ45 –Communication Ports
Description
CAN:
Battery communication connector.
Power Sensor:
Current sensor communication connector.
Power Switch:
Power Switch communication connector.
Step
Description
1
Use the feed cables for the corresponding cable entry (Fig. 1, d).
2
Select correct port (see next section), press down spring clamp, insert cables and release.

8
Standard communication with Power Battery
Additional Power Switch communication
Additional Power Sensor communication
[6] Connection - Power Switch

9
Step
Description
1
Switch off the system (show section 9).
2
Install the Power Switch in the service connection box or
in the near.
3
Connect the Power Sensor and Power Switch via patch cable with the
correspondending RJ45-connectors at the Power Storage DC.
4
For further configurations please refer to user manual.
[6.1] Connection - Power Sensor
This Section applies only in use with a RCT Power Switch and battery system.
Please note for a correct function of the Power Switch is only possible if the entire installation is as TN-
C-S- or TN-S system!

10
Step
Description
1
Place the Power Sensor in the service entrance
box.
2
Click the three current sensors around the
phases L1, L2 and L3 wires in the service
entrance box.
(The order and direction of installation is not
important).
3
Connect the Power Sensor via Patch cable to
the Power Storage DC at the RJ45 connector
X403 “Power Sensor”
(see fig. 4).
4
For further configurations please refer to user
manual.
[7] Connection –Ethernet-Interface
The Power Storage DC system functionality depends on energy consumption measurement. This section
applies only in use with a Power Sensor.

11
In addition to Wi-Fi-communication, the Power Storage DC offers the option to communicate via an Ethernet
interface after initial start-up.
For this, a network cable (at least Cat5e) must be connected to the Power Storage DC (see Fig.2, E) and the
corresponding terminal (preferably a router).
The configuration of this connection is made via the menu item “network settings” in the RCT Power App and is
explained in the manual.
[8] Commissioning
Ensure proper mechanical an electrical installation before commissioning the solar inverter.
Check the cables to ensure, that they are in sound condition.
Always disconnect the mains connection first by switching off the corresponding mains fuse and before disconnecting
the solar generator side by opening the DC load break switch.
The DC-connectors on the solar generator side must not be disconnected under load.
First turn the DC load break switch to position “0” and always switch off battery first!
To ensure proper function of the DC system a RCT Power Sensor is required which transmits the
grid feed-in power to the inverter.
If a storage system already exists this information can also be transmitted by networking via
LAN / WLAN and thus dispenses with the RCT Power Sensor.
Further configuration inter alia for the networking of RCT Power devices via LAN / WLAN can be found in the manual
on our website www.rct-power.com.
[8.1] Switch on Inverter

12
Step
Description
1
Establish grid connection via the external circuit breaker.
2
Switch on the solar generator voltage by closing the DC load
break switch (position 1).
The solar inverter starts operating, when the input voltage level and
power is adequate.
[8.2] Access to the inverter
The Solar Inverter is equipped with an internal Wi-Fi unit. To set up Solar inverter you need to access via Wi-Fi due
to the suitable Android APP.
The Android APP is the central user interface for commissioning.
It ensures easy data collection and troubleshooting.
Obtaining Android App: Go to Google Play Store, search for “RCT Power App”, and install.
Step
Description
1
Activate Wi-Fi on your smartphone (or tablet
computer).
2
Connect with SSID identical with the name of the
Power Storage on inverter display via Wi-Fi.
(e.g. PS 6.0 2FQR).
If the Inverter is already in a network via Wi-Fi,
connect to the network.
3
If you connect the first time with a device to the
inverter you need a password.
The password corresponds to the serial number of your
device (see display or name plate).
Please note that the inverter is powered by PV modules.
Accordingly a start of the power supply and thus commissioning only with sufficient
irradiation is possible.
Only an example!

13
4
Start “RCT Power APP”.
5
Switch to tab “Network” and press “Scan”.
6
Activate “10.10.100.254“ (or if you have renamed the
device choose this) by choosing radio button.
7
If the connection is made with an inverter, the name is
displayed on the head and the icon is edged.
[8.3] Configure inverter
8
Press “ ”.
9
Enter setup procedure by “Login” with suitable
password for installer-level
10
Choose “Land and Norm”, select appropriate norm
and “apply”.
11
Wait during parameters are synchronizing and stored.
When finished press “Finish”.
Return to the main menu.

14
[8.4] Configure plant peak power and power reduction
In order to obtain the maximum yield from the solar system, it is possible to configure a dynamic power reduction.
There is no additional equipment required for this configuration apart from the Power Sensor. The feed-in power is
measured at the mains connection point and is only capped if the excess power exceeds the set value.
1
Switch to „Device“ and tap on „Settings“ and in
following on „Device settings“.
2
Enter your system peak power and the required limiting
factor in the following screen.
Please note that after entering the value you confirm it
on the keyboard (depending on the device "Enter" or
"Ok").
The corresponding field then briefly turns red and white
again.
Please note: If your system contains several devices you must the enter peak power of the combined system..
Changes to settings are only saved permanently if they are flashed to the inverter's memory!
It is therefore essential to press "FLASH" to confirm your settings changes. They will otherwise be lost when the
inverter is switched off.
[8.5] Configure battery
1
Go to “Device” and click on “Settings”, then click
“Battery”.
2
Click on “Battery type” and select
“Li-Ion RCT Power” or your corresponding battery type.
3
Turn on the battery (or if available the batteries) by
setting the battery /the batteries ON / OFF switch to “1”.
External power reduction based on solar plant
peak power: e.g. 70% (≙0,70)
Solar plant peak power [Wp]
Resulting max. allowed grid feed-in power
[W]

15
15
The inverter now connects to the battery ( If 2 batteries
are available the inverter first connects to one and then
to the other).
After the inverter checked the specifications and
connected to the battery / the batteries, it starts to
arrange the current sensor.
Once this is done, the inverter resets and flashes the
settings.
After that he starts to calibrate the battery / batteries).
The battery / batteries will be charged to 100%, this may
take several hours.
(When calibrating, power may be used out from the grid
to speed up the process if the power is insufficient.)
When calibration is complete, the system automatically
switches to compensation mode.
16
Check if the Power Sensor has been arranged.
Go to the homepage “online” and press the
“ “ symbol and check the display.
Current sensors are tuned = 1
Note: For further information on installation and operation, please refer to the detailed user manual, which can be
obtained from our website www.rct-power.com .
[9] How to switch off the system
Step
Description
1
Locate DC switch (Fig. 1, b) and turn to “0” position and switch off the battery with the ON/OFF switch to “0”.
2
Switch off circuit breaker, main breaker or fuse for disconnecting inverter from utility grid.
3
Wait min. 10 minutes until capacitors have discharged.
4
Remove the battery- and DC connectors(Fig. 1, c & h).
Press latches of male plug together to unlock and pull off DC plugs.
[10] Technical Data

16
Power Storage DC 8.0 10.0
Order Number IHP080N1AE0 IHP100N1AE0
DC-INPUT
Max. recommended DC power 13200 W 16500 W
MPPT 2 (paralleling possible)
Input per MPPT 1
Maximum DC current per MPPT 14 A ( 24 A in parallel mode)
Rated DC voltage 700 V
DC start up voltage / power 150 V / 40 W
DC voltage range 140 V ... 1000 V
MPP voltage range 380 V ... 800 V 380 V ... 800 V
Maximum voltage DC 1000 V
Connector type Weidmüller PV-Stick (MC4 compatible)
BATTERY-INPUT
DC voltage range 120 V … 600 V
Maximum charge / discharge current 25 A / 25 A
Connector type Weidmüller PV-Stick (MC4 compatible)
AC-OUTPUT
Rated AC output power 8000 W 9900 W
Maximum active power 8000 W 9900 W
Maximum apparent power 10500 VA 10500 VA
Nominal AC current per phase 11,6 A 14,5 A
Maximum AC current per phase 15,2 A 15,2 A
Rated frequency 50 Hz / 60 Hz
Frequency range 45 Hz ... 65 Hz
Max. switch-on current Ik’’ 15,2 A, 0,1ms
Max. fault current (RMS) 285 mA
Rated AC voltage 230V / 400 V (L1, L2, L3, N, PE)
AC voltage range 180V ... 290V
Total harmonic distortion (THD) < 2% at rated power
Reactive power factor (cos phi) 1 (adjustable range 0,8 cap….0,8 ind )
Earth fault protection RCD
DC-current injection < 0,5% In
Required phases, grid connections 3 (L1, L2, L3, N, PE)
Number of feed-in phases 3
Type of AC connection Spring clamps
PERFORMANCE
Standby consumption when battery storage
is empty 2) 6 W
Maximum efficiency (PV2AC) 98,60% 98,60%
European efficiency (PV2AC) 98,33% 98,35%
Medium efficiency PV2AC 1) 97,78% 97,89%
Medium efficiency PV2Bat 1) 98,00% 98,00%
Medium efficiency AC2Bat 1) 97,33% 97,44%
Medium efficiency Bat2AC 1) 97,36% 97,48%
Medium Dead time / settling time 2) 0,1s / 0,4s
Topology Transformerless
1) Medium efficiencies in combination with PowerBattery 11.5 and UmppNenn
2) Measurement results according to „Effizienzleitfaden”for PowerStorage 6.0 with PowerBattery 11.5
OTHER

17
PV –DC-switch Integrated
DC overvoltage category II
AC overvoltage category III
Data interface WIFI, LAN, RS485, Multifunctional dry contact, 4 x digital in, 2 x digital in/out
Display LCD dot matrix 128 x 64 with backlight
Cooling Convection
IP degree of protection IP 42
Max. operating altitude 2000 m
Max. relative humidity 5 - 85% (non condensing), Indoor
Typical noise < 35 dB
Operating temperature range -25°C … 50°C (40° at full load)
Type of installation Wall mounting
Dimensions (height x width x depth) 570 x 585 x 200 mm
Weight 32 kg
SAFETY / STANDARDS
Protection class 1
Overload behavior Working point adjustment
Certificates CE, VDE-AR-N 4105:2018-11, EN 50549
Further certificates : www.rct-power.com
EMC EN61000-6-2, EN61000-6-3, EN61000-3-2, EN61000-3-3
Safety EN/IEC62109-1, EN/IEC62109-2
BLOCK DIAGRAM

RCT Power GmbH
Line Eid Str. 1
78467 Konstanz, Deutschland
Tel.: [phone]
Mail: info[at]rct-power.com
Internet: www.rct-power.com
01/2021