RCT Power 63/25 User manual

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MANUAL
Power Switch
suitable for
RCT Power Storage DC

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Copyright
Copyright © 2018 RCT Power GmbH. All rights and modifications reserved.
This document may not be reprinted or copied in whole or in part without the explicit written permission of RCT
Power GmbH.
Any reproduction, distribution, translation or transmission in any form, electronic or mechanical, including
photocopying, recording or storage on data carriers without the permission of RCT Power GmbH is a violation of the
applicable copyright laws and will be prosecuted.
We expressly reserve the right to make technical changes which serve to improve the device or which increase the
safety standard - even without separate notification.
Publisher responsible for the content: RCT Power GmbH
This user manual refers to products and product names that are registered trademarks. The mention of products
and product names is for information purposes only and does not constitute misuse of goods.
The passages in this user manual referring to these products do not constitute original documentation for the
respective product.
About us:
RCT Power GmbH
Line Eid Str. 1
78467 Konstanz, Germany
Tel.: [phone]
Mail: info[at]rct-power.com
Internet: www.rct-power.com
Document number: 01/22

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TABLE OF CONTENT
1 ABOUT THIS DOCUMENT ........................................................................................31
1.1 Validity, purpose and scope of the document and legal provision .........................................................31
1.2 Target group ........................................................................................................................................32
1.3 Symbols used.......................................................................................................................................32
2 SAFETY...................................................................................................................33
2.1 Personnel and qualifications................................................................................................................33
2.2 Safety measures ..................................................................................................................................33
2.3 Type plate - Symbols and characteristic values....................................................................................34
3 USE AND FUNCTION OF THE POWER SWITCH .........................................................35
3.1 Intended use ........................................................................................................................................35
3.1.1 System approvals.................................................................................................................................35
3.1.2 Permitted grid systems........................................................................................................................35
3.1.3 Country approvals................................................................................................................................35
3.2 Function...............................................................................................................................................36
3.2.1 Tasks of the Power Switch....................................................................................................................36
3.2.2 Selection aid for determining the appropriate version..........................................................................37
3.2.3 Mode of operation of the backup power switchover .............................................................................38
4 SCOPE OF DELIVERY...............................................................................................39
5 CIRCUIT DIAGRAM..................................................................................................40
5.1 RCT Power Switch 63/25, Art.-No. 310-0003 .......................................................................................40
5.2 RCT Power Switch 63/25-3, Art.-No. 310-0004....................................................................................41
6 INSTALLATION........................................................................................................42
6.1 Requirements for the installation site ..................................................................................................42
6.2 Minimum distances..............................................................................................................................42
6.3 Dimensions and fastening....................................................................................................................43
6.4 Cable entry and cable / conductor types ..............................................................................................44
6.5 Connection of the Power Switch...........................................................................................................45
7 THROUGHPUT POWER............................................................................................46
8 COMMISSIONING THE POWER SWITCH...................................................................47
8.1 General................................................................................................................................................47
8.2 Commissioning procedure Power Battery System with Power Switch..................................................47
8.3 Configuration and activation of the Power Switch ................................................................................47
8.3.1 Configuration island mode...................................................................................................................47
8.3.2 Activation of the Power Switch via the APP...........................................................................................48
8.3.3 Final works ..........................................................................................................................................48
9 DISCONNECTING THE POWER SWITCH FROM THE POWER SUPPLY........................49
10 MAINTENANCE AND CLEANING..............................................................................49

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11 STORAGE................................................................................................................49
12 DISPOSAL...............................................................................................................49
13 DISCLAIMER ...........................................................................................................50
14 TECHNICAL DATA....................................................................................................51

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1 About this document
1.1 Validity, purpose and scope of the document and legal provision
These instructions apply to the RCT Power Switch according to the following type designations:
RCT Power Switch 63/25, Art.-No. 310-0003
All-pole disconnection
Suitable for one or more Power Inverters up to a total of max. 24A/phase
Standard version DE /AT /CH, especially DE /CH
RCT Power Switch 63/25-3, Art.-No. 310-0004
3-pole disconnection
Suitable for one or more power inverters up to a total of max. 24A/phase
Buffered mains contactors enable a FRT or TOR Erzeuger (type A)
Standard version AT (for most grid operators, e.g. Netz OÖ and Netz NÖ)
Please observe the relevant system accompanying documentation for these installation instructions, such as
Technical data RCT Power Storage DC
Manual RCT Power Storage
Setup RCT Power Storage
Manual RCT Power Sensor
The content of the manual is regularly updated or revised due to ongoing product development.
The latest version can be found at www.rct-power.com.
RCT Power GmbH reserves the right to make changes to specifications or documents without prior notice.
RCT Power GmbH is not liable for any damages resulting from the use of this document.
This document does not replace any laws, regulations, rules, standards or conventions.
The warranty conditions are enclosed with the unit. No guarantees can be derived from this document.
Please pass on these operating and installation instructions and related documents to the system
operator to be kept in a suitable place.
The documents should be available at all times for future reference or to clarify technical problems.

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1.2 Target group
These instructions are for qualified electricians. Only qualified electricians may carry out the activities described in
this manual.
1.3 Symbols used
This symbol indicates an imminently hazardous situation which, if the safety
regulations are not followed, will result in death, serious injury or severe damage to
property.
This symbol indicates an imminently hazardous situation with medium risk which, if
the safety regulations are not followed, will result in death, serious injury or severe
damage to property.
This symbol indicates an immediate danger with a low risk, which - if the safety
regulations are not followed - will result in minor or moderate damage to property.
This symbol indicates a potentially hazardous situation which, if not avoided, may
result in equipment damage or property damage.
This symbol indicates important information and tips to help you better understand the
Power Switch
DANGER
WARNING
CAUTION
ATTENTION

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2 Safety
2.1 Personnel and qualifications
To prevent damage to property and personal injury, the Power Switch must only be installed, commissioned and
maintained by qualified personnel.
Qualified personnel authorised to perform the tasks described in this document have the following knowledge:
You are trained to install electrical equipment.
You understand the operation of the Power Switch.
You have read and understood the documents supplied with the unit.
You know and use the appropriate tools and equipment to perform the work.
They are familiar with all applicable laws, regulations, standards and directives for electrical equipment.
You are aware of the safety requirements and safety-relevant guidelines for electrical equipment.
You are aware of the occupational health and safety laws and guidelines.
You know and use the appropriate personal protective equipment.
2.2 Safety measures
The Power Switch has been designed and tested strictly in accordance with international safety regulations.
All safety instructions relating to an electrical and electronic device must be observed during installation, operation
and maintenance.
Danger to life or serious injury due to electric shock!
If the Power Switch is connected to the mains or the inverter, dangerous voltages
are present in cables and parts of the Power Switch interior.
Work involving wiring, connecting or opening the Power Switch enclosure must be
carried out by qualified personnel.
Important: both voltage sources (inverter / grid) must be switched off and secured
against being switched back on before any work is carried out on the Power Switch.
Ensure that other persons stay away from cables and internal components.
Risk of injury from electric shock!
Installation, service and maintenance work may only be carried out by a qualified
electrician.
Do not expose the product to shocks or pressure and do not drop it.
Do not switch on again until the electrical work has been completed.
The Power Switch is designed in such a way that miniature circuit breakers and residual current circuit
breakers can be operated by laymen.
This means that, for example, prescribed checks of the residual current circuit breaker can also be carried
out by laypersons by means of its test button.
DANGER
WARNING

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• All electrical installations must be carried out in accordance with local and national standards and
guidelines.
• To avoid personal injury, ensure that electrically conductive surfaces of the entire PV system are
earthed.
• A malfunction may affect the safety of the Power Switch. Do not operate the Power Switch if it shows
visible damage.
• The Power Switch does not contain any parts to be maintained by the system operator. Please contact
the relevant qualified personnel for maintenance work.
• Only use equipment approved by the manufacturer. Do not make any modifications to the product and
do not remove the type plate.
2.3 Type plate - Symbols and characteristic values
Protection class II
The Power Switch has reinforced insulation and is therefore protected against direct and indirect
contact.
CE marking
The Power Switch complies with the requirements of the applicable EC directives.
WEEE marking
Do not dispose of the Power Switch and its components in household waste!
Rated operating voltage Ue[V]
Do not operate the Power Switch at any other operating voltage than specified!
Rated operating frequency fn[Hz]
Do not operate the Power Switch at any other operating frequency than specified!
Rated power Pn[kW]
The Power Switch is designed for this throughput power - or rated thermal power.
Peak current Ip[A]
The Power Switch may be operated up to this peak current.
Max. Ambient temperature ta[°C]
The Power Switch may be operated up to this max. ambient temperature.
Ingress protection IP65
The Power Switch is completely protected against dust and water jets.
IEC/EN standard specification
The Power Switch complies with the standards for low-voltage switchgear and controlgear
assemblies: IEC/EN 61439-1 IEC/EN 61439-2 IEC/EN 61439-3

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3 Use and function of the Power Switch
3.1 Intended use
3.1.1 System approvals
The Power Switch may only be installed in the configuration with an RCT Power Storage DC. The components used
and the electrical wiring are approved by the manufacturer RCT Power.
3.1.2 Permitted grid systems
Depending on the version, the RCT Power Switch is permitted for the following grid structures:
RCT Power Switch 63/25, Art.-No. 310-0003
TN(C)-SGrid operator 4 wire PE and N common
Customer system 5 wire PE and N separated
TN-SGrid operator 4 wire PE and N separated
Customer system 5 wire PE and N separated
TT Grid operator 4 wire no PE, only N
Customer system 4 wire only N; PE only local, without grid connection
RCT Power Switch 63/25-3, Art.-No. 310-0004
TN(C)-SGrid operator 4 wire PE and N common
Customer system 5 wire PE and N separated
TN-SGrid operator 5 wire PE and N separated
Customer system 5 wire PE and N separated
A TN-C system on the consumer side is not permitted with any version !
3.1.3 Country approvals
The final decision on the conformity of the respective version of the Power Switch with the specifications of the grid
operator is, of course, the responsibility of the respective grid operator itself.
German low-voltage grid operators generally require all-pole disconnection (VDE application rule „Stationary
electrical energy storage systems intended for connection to the low-voltage grid“ - VDE-AR-E 2510-2; 6.410.2.2
Island operation with TN system).
It is essential to clarify the respective version with the Austrian grid operators before installation. For example, in
some supply areas only a 3-pole disconnection in the TN-(C)-S network is permitted! In some cases, FRT capability
is also a prerequisite. In this case, clarification with the network operator is absolutely necessary in advance!
If the network operator requires an FRT-supporting Power Switch, the Power Switch 63/25-3 must be used! The all-
pole disconnecting Power Switch 63/25 does not support FRT!
Please note that the system constructor/installer is responsible for the correct use. In case of doubt, it is always
advisable to consult the grid operator (especially during initial installation).
ATTENTION

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3.2 Function
3.2.1 Tasks of the Power Switch
Measurement and transmission of parameters required for energy management via integrated RCT Power
Sensor
Disconnection from the grid in the event of a grid failure/grid disturbance
Reconnection on grid return/grid fault clearance
Establishment of the safety-relevant earth connection in backup power operation (only Power Switch
63/25!)
Separation of the consumer circuits into „normal“ consumer loads (without backup power functionality) and
into backup power loads.
In island mode, the total load of the backup power circuits must not be higher than the nominal power of
the inverter
Power Storage DC 4.0 3 x 1,33kVA /4kVA!
Power Storage DC 6.0 3 x 2,00kVA / 6kVA!
Power Storage DC 8.0 3 x 2,66kVA
Power Storage DC 10.0 3 x 3,30kVA

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3.2.2 Selection aid for determining the appropriate version
As explained in the section „Country approvals“, very different requirements apply to the design of the RCT Power
Switch depending on the country and region.
Please be sure to check the requirements of the respective grid operator before installation!
All types listed below are designed for a maximum feed-in power of 30 kW.
(applied to X2 and X3) (Ta25°C)
YES / NO
YN
Grid structure customer
POWER SWITCH 63/25
ART.-NO.: 310-0003
All-pole disconnection?
TT TN-C
TN-(C)-S
TN-S
X
YES / NO
Y
N
Additional grid and plant protection required?
(Requirement from the grid operator!
e.g. Tiroler Netze / Wiener Netze)
XX
X
FRT capability required? FRT capability required?
POWER SWITCH 63/25-3
ART.-NO.: 310-0004
YES / NO
Y
N YES / NO
Y
N
YES / NO
Y
N
Additional grid and plant protection required?
(Requirement from the grid operator!
e.g. Tiroler Netze / Wiener Netze)

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3.2.3 Mode of operation of the backup power switchover
Switchover from grid operation to backup power operation
Failure or disruption of the public grid
The Power Storage detects a grid failure and disconnects the internal mains relays. Only with Power
Switch 63/25-3, short-term grid interruptions do not cause a grid disconnection!
Relay K5* is activated by the Power Switch Board.
The mains contactors K1, K2 and K3 drop out.
The mains contactor K1 disconnects the Power Storage and the backup loads at all poles** from the public
grid.
The Power Storage remains connected to the backup loads.
The contactor K3 connects the neutral conductor of the Power Storage with the protective conductor and
ensures a safe „PEN“ connection for backup power operation**. The phase coupling contactor K3 enables
activation of the phase coupling via F2.
Provided that the single-phase backup power operation is secured via F2, the phase coupling is activated.
The Power Storage receives additional information from the Power Switch Board and starts its internal
procedure for setting up the backup power operation.
After checking all available parameters and additional safety information (feedback signals from K1/K2/
K3/F2), the active feed-in is started by the Power Storage after a defined measuring time. Now all backup
loads are supplied with electrical energy.
Switchover of backup power operation to grid operation
Return of the public grid
The Power Switch Board measures a grid voltage and transmits this information to the Power Storage.
After a defined measuring time, the public grid is considered „stable“ again.
The Power Storage synchronises itself with the restored grid and switches back to grid operation
without interruption.
Attention: If 1-phase island mode is selected, there is a short interruption when the grid is
restored !
The Power Storage deactivates the relay K5, which practically simultaneously activates
-the mains contactor K1 (connection to the public mains is restored at all poles)
-the contactor K3 (thus disconnecting the „PEN“ connection**)
-the contactor K2 (thereby disconnecting the phase coupling activated by F2)
The backup loads and the Power Storage are thus reconnected to the public grid.
The Power Storage, in turn, starts its active feed-in after checking all normatively required grid
parameters by means of its grid parameters by means of its internal grid and plant protection.
* The relay K5 is installed as an additional safety device and prevents the activation of K1, K2 and K3 with its normally closed contact when the
grid is restored. This means that it is not possible to switch back to grid operation without the additional „consent“ of the Power Storage, even
though a grid is already present.
** Only all-pole disconnecting versions.

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4 Scope of delivery
A B C D E F G
H I J K L M
N O P Q R S
T U V W
Position Quantity Designation
A1 Power Switch
B3 Cable gland M40
C4 Cable gland M32
D2 Cable gland M25
E1 Cabel gland M20
F2 Extension -M32 to M40-
G1 Extension - M25 to M32-
H1 Reduction -M50 to M40-
I1 Reduction -M50 to M32-
J1 Reduction -M20 to M12- (for pressure equalising valve)
K1 Locknut M50
L2 Locknut M32
M3 Locknut M25
N2 Locknut M20
O2 Splitted sealing insert M25 (for RJ45 cable)
P1 Pressure equalising valve
Q4 Cover caps for fastening screws
R1 RJ45-cable 10m white for the Power Sensor
S1 RJ45-cable 10m black for the Power Switch Board
T1 Warning label - dangerous voltage
U1 Lable - Indication of an off-grid storage system
V1 Manual Power Switch
W1 Manual Power Sensor
PV
+
Battery

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5 Circuit diagram
5.1 RCT Power Switch 63/25, Art.-No. 310-0003
X2
NOT buffered
house load
/ additional
generators*
* max. total power of
generators connected
to X2 and X3:
30kW (25°C)
X4
Buffered consumers,
NO producers!
X3
Power Storage DC*
(responsible for backup power)

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5.2 RCT Power Switch 63/25-3, Art.-No. 310-0004
X2
NOT buffered
house load
/ additional
generators*
* max. total power of
generators connected
to X2 and X3:
30kW (25°C)
X4
Buffered consumers,
NO producers!
X3
Power Storage DC*
(responsible for backup power)

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6 Installation
6.1 Requirements for the installation site
Danger to life due to fire and explosion
Do not mount the Power Switch on a combustible surface!
Do not mount the Power Switch in areas where highly flammable substances are
present!
Do not install the Power Switch in areas where there is a risk of explosion!
Do not install the Power Switch if you have noticed any damage to the product after
delivery.
DSubstrate consists of solid material
DSubstrate is suitable for weight and dimensions
DInstallation site is accessible at all times
DClimatic conditions are met (see technical data)
DThe installation site is not exposed to direct sunlight or weathering.
DThe installation site is protected from splash water
DThe technical connection requirements of the grid operator are met.
Mounting position
6.2 Minimum distances
The minimum distances apply to all versions of the Power Switch!
All values
in [mm]
DANGER

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6.3 Dimensions and fastening
Enclosure openings for fastening: 4 x oblong hole Ø 5.5
Select a suitable type of fastening depending on the substrate, e.g. using 4 x expansion dowel S8 and 4 x
chipboard/wood screw Ø5.5
Power Switch 63/25
Power Switch 63/25-3

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6.4 Cable entry and cable / conductor types
Use the pre-embossings on the bottom!
M40
16 - 28 mm
M32
13 - 21 mm
M25
9 - 17 mm
M20
6 - 13 mm
Pressure
equalising
valve
M12
Terminal strip Connection Recommended cable type /
cross-section Remark
X1 Meter
NYY-J
NYY-J
NYY-O
NYY-O
5x10mm²
5x16mm²
4x10mm² #
4x16mm² #
max. pre-fuse 50A
max. pre-fuse 63A
max. pre-fuse 50A
max. pre-fuse 63A
PE Main equipotential bonding #NYM
NYM
1x10mm²
1x16mm²
max. pre-fuse 50A
max. pre-fuse 63A
X2 Loads not backuped NYY-J
NYY-J
5x10mm²
5x16mm²
max. pre-fuse 50A
max. pre-fuse 63A
X3 Power Storage NYY-J
NYY-J
5x4mm²
5x6mm²
short / medium distance
long distance
X4 Backup loads NYY-J
NYY-J
5x10mm²
5x16mm²
max. pre-fuse 50A
max. pre-fuse 63A
Power Sensor Cat5e*white Included in the
scope of delivery
Power Switch Board Cat5e*black Included in the
scope of delivery
# TT-system
* Requirement for the data line if the provided cable is not used:
Cat5e - Quality
Minimum cross-section AWG21
Max. length for data cable 25m!

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6.5 Connection of the Power Switch
The Power Switch is connected by means of spring-loaded terminals (Wago Cage Clamp ®).
Only the Power Sensor and the Power Switch Board are connected to the RJ45 connector via the enclosed data
cables.
Terminal strip Wire type Max. cross-section
[mm²]
Stripping length
[mm]
X1 / X2 / X4
solid
finely stranded
finely stranded with end sleeve
16
25
16
18 - 20
X3
solid
finely stranded
finely stranded with end sleeve
10
10
6
13 - 15
If several units are connected to the „Power Storage“ connection, it must be ensured that only one unit
sets up an off-grid system.
Furthermore, each unit must be additionally protected separately.
If only one unit is connected, additional protection can be omitted if a minimum cross-section of 4mm² for
the connection is used.

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7 Throughput power
The thermal throughput power (rated power) and the maximum permissible ambient temperature are decisive
for the maximum heating of the components within the Power Switch. In order not to cause unwanted tripping
of miniature circuit breakers and residual current circuit breakers, these two parameters must remain within the
permissible limits.
Power Switch 63A (= grid connection value max. 63A fuse)
max. permissible ambient temperature: 40°C
max. permissible throughput power: 30KW (Ta25°C)
Pthroughput max. = ∑ P max. supply + P max. feed-in
In grid operation, a consumer load drawn from the public grid is „passed through“ the Power Switch. In grid
operation, a consumer power drawn from the public grid is „passed through“ the Power Switch. Conversely,
a surplus of energy can in turn be fed back into the grid. The mathematical sum of both powers is called the
throughput power. The averaged (average to be expected) throughput power is also referred to as „thermal
throughput power“. A momentary peak power of the consumer / PV system can and may be higher!