Wilo Control SC-L User manual

2537058 Ed.03/B1-05/2016 WH
Pioneering for You
Wilo-Control SC-L
de Einbau- und Betriebsanleitung
en Installation and operating instructions
fr Notice de montage et de mise en service
es Instrucciones de instalación y funcionamiento
it Istruzioni di montaggio, uso e manutenzione
pt Manual de Instalação e funcionamento
nl Inbouw- en bedieningsvoorschriften
no Monterings- og driftsveiledning
sv Monterings- och skötselanvisning
hr Upute za ugradnju i uporabu
sr Uputstvo za ugradnju i upotrebu

Fig. 2BFig. 2A
Fig. 1
1
2
3
4
1
2
33
4
5
6
6
7
1
2
33
4
6
5
7

Fig. 4Fig. 3
Fig. 5
dry run
4
all OFF
3
P1 ON
1
P2 ON
2
high water
5
5
P1 OFF 2
P1 ON 1
P2 ON 3
P2 OFF 4
67*
8*
low water 4
dry run
(Ext.OFF)
5
OFF
3
ON 1
2
high water

Installation and operating instructions Wilo-Control SC-L 31
English
1. Introduction 32
1.1. About this document 32
1.2. Personnelqualications 32
1.3. Copyright 32
1.4. Subject to change 32
1.5. Warranty 32
2. Safety 32
2.1. Instructions and safety instructions 33
2.2. General safety information 33
2.3. Electrical work 33
2.4. Conduct during operation 33
2.5. Standards and guidelines used 34
2.6. CE marking 34
3. Product description 34
3.1. Intendeduseandeldsofapplication 34
3.2. Set-up 34
3.3. Function description 34
3.4. Operating modes 34
3.5. Technical data 34
3.6. Type key 35
3.7. Options 35
3.8. Scope of delivery 35
3.9. Accessories 35
4. Transportation and storage 35
4.1. Delivery 35
4.2. Transport 35
4.3. Storage 35
4.4. Return delivery 36
5. Installation 36
5.1. General 36
5.2. Installation types 36
5.3. Installation 36
5.4. Electrical connection 37
6. Operation and function 39
6.1. Operating modes and operation principle 40
6.2. Menu control and structure 41
6.3. Initial commissioning 41
6.4. Setting the operating parameters 41
6.5. Forced switching of the pumps in case of dry run
or high water 45
6.6. Standby pump 45
6.7. Operation in case of a fault to the level sensor 45
6.8. Factory settings 45
7. Commissioning 46
7.1. Level control 46
7.2. Operation in potentially explosive areas 46
7.3. Activating the switchgear 46
7.4. Rotation control of connected three-phase AC
motors 46
7.5. Automatic mode on the unit 47
7.6. Emergency operation 47
8. Shutdown/disposal 47
8.1. Deactivating automatic mode on the unit 47
8.2. Temporary decommissioning 47
8.3. Final shutdown 47
8.4. Disposal 48
9. Maintenance and repair 48
9.1. Maintenance intervals 48
9.2. Maintenance tasks 48
9.3. Repairs 48
10. Troubleshooting and possible solutions 48
10.1. Fault indication 48
10.2. Fault acknowledgement 49
10.3. Fault memory 49
10.4. Error codes 49
10.5. Further steps for troubleshooting 49
11. Appendix 50
11.1. Overview of individual symbols 50
11.2. System impedance tables 51
11.3. Spare parts 52

32 WILO SE 05/2016 V05 DIN A4
English INTRODUCTION
1. Introduction
1.1. About this document
The language of the original operating instruc-
tions is German. All other languages of these
instructions are translations of the original oper-
ating instructions.
This manual is divided into individual sections,
which are listed in the table of contents. Each
section has a heading which clearly describes its
content.
A copy of the EC declaration of conformity is a
component of these operating instructions.
Ifatechnicalmodicationismadeonthedesigns
named there without our agreement, this decla-
ration loses its validity.
1.2. Personnel qualications
All personnel who work on or with the switchgear
mustbequaliedforsuchwork;electricalwork,
forexample,mayonlybecarriedoutbyaqualied
electrician. All personnel must be of legal age.
Operating and maintenance personnel must also
observe national accident prevention regulations.
It must be ensured that personnel have read and
understood the instructions in this operating and
maintenance handbook; if necessary, this manual
must be ordered from the manufacturer in the
required language.
This switchgear is not intended for use by persons
(including children) with reduced physical, senso-
ry or mental capabilities, or lack of experience and
knowledge, unless they have been given supervi-
sion or instruction concerning use of the switch-
gear by a person responsible for their safety.
Children should be supervised to ensure that they
do not play with the switchgear.
1.3. Copyright
This operating and maintenance manual has been
copyrighted by the manufacturer. The operating
and maintenance manual is intended for use by
installation, operating and maintenance person-
nel. It contains technical regulations and drawings
which may not be reproduced or distributed,
either completely or in part, or used for purposes
of competition, or shared with others without the
express consent of the manufacturer. Illustrations
may differ from the original and serve only as
example illustrations of switchgears.
1.4. Subject to change
The manufacturer reserves the right to make
technicalmodicationstosystemsand/orcom-
ponents. This operation and maintenance manual
refers to the switchgear indicated on the title
page.
1.5. Warranty
Ingeneral,thespecicationsinthecurrent“Gen-
eral Terms and Conditions” apply to the warranty.
Youcanndthesehere:www.wilo.com/legal
Any deviations must be contractually agreed and
shall then be given priority.
1.5.1. General
The manufacturer is obliged to correct any de-
fects found in the switchgears it sells, provided
thattheoneormoreofthefollowingisthecase:
• The defects are caused by the materials used
or the way the product was manufactured or
designed.
• The defects were reported in writing to the man-
ufacturer within the agreed warranty period.
• The switchgear was used only as prescribed.
1.5.2. Warranty period
The duration of the warranty period is stipulated
in the “General Terms and Conditions”.
Any deviations must be contractually agreed.
1.5.3. Spare parts, add-ons and modications
Only genuine spare parts from the manufacturer
may be used for repairs, replacements, add-ons
andmodications.Unauthorisedadd-onsand
modicationsortheuseofnon-originalspare
parts can seriously damage the switchgear and/or
injure personnel.
1.5.4. Maintenance
The prescribed maintenance and inspection
work should be carried out regularly. This work
mayonlybecarriedoutbyqualied,trainedand
authorised personnel.
1.5.5. Damage to the product
Damage and malfunctions that endanger safety
must be eliminated immediately by trained per-
sonnel. The switchgear may only be operated if it
is in proper working order.
In general, repairs should only be carried out by
Wilo customer service.
1.5.6. Exclusion from liability
No liability will be assumed for damage to the
switchgearifanyofthefollowingisthecase:
• Inadequatecongurationbythemanufacturer
due to the information provided by the operator
orcustomerbeinginsufcientorincorrect
• Non-compliance with safety instructions and
workinginstructionsasspeciedinthisoperating
and maintenance manual
• Improper use
• Incorrect storage and transport
• Improper assembly/dismantling
• Insufcientmaintenance
• Incorrect repairs
• Inadequate construction site or construction work
• Chemical,electrochemicalandelectricalinu-
ences
• Wear
This means the manufacturer’s liability excludes
all liability for personal injury, material damage or
nanciallosses.
2. Safety
This section lists all the generally applicable
safety instructions and technical information. In

Installation and operating instructions Wilo-Control SC-L 33
SAFETY English
addition,alltheothersectionscontainspecic
safety instructions and technical information. All
instructions and information must be observed
and followed during the various phases of the
switchgear life cycle (installation, operation,
maintenance, transport, etc.)! The operator is
responsible for ensuring that all personnel follow
these instructions and guidelines.
2.1. Instructions and safety instructions
This manual uses instructions and safety in-
structions for preventing injury and damage to
property. To clearly identify them for personnel,
the instructions and safety instructions are dis-
tinguishedasfollows:
• Instructions appear in bold and refer directly to
the preceding text or section.
• Safety instructions are slightly indented and bold
and always start with a signal word.
• Danger
Serious or fatal injuries can occur!
• Warning
Serious injuries can occur!
• Caution
Injuries can occur!
• Caution (instruction without symbol)
Substantial property damage can occur. Irrepa-
rable damage is possible!
• Safety instructions that refer to personal injury
appear in black and are always accompanied by a
safety symbol. Danger, prohibition or instruction
symbols are used as safety symbols.
Example:
Dangersymbol:Generalhazard
Danger symbol, for example, electrical current
Symbol for prohibited action, e.g. No entry!
Instruction symbol, for example, wear protec-
tive clothing
The safety symbols used conform to the generally
applicable directives and regulations, such as DIN
and ANSI.
• Safety instructions that only refer to materi-
al damage are printed in grey, without safety
symbols.
2.2. General safety information
• The electricity network must be switched off
before any work is performed (installation, dis-
mantling, maintenance). The switchgear must be
disconnected from the electricity network and
secured against reactivation.
• The operator must report any faults or irregulari-
ties that occur to a line manager immediately.
• Where damage occurs to electrical components,
cables and/or insulation, the switchgear must be
shut down immediately by the operator.
• Tools and other objects should be kept in their
designated places.
• The switchgear may not be installed in potentially
explosive areas. There is a risk of explosion.
These instructions must be strictly observed.
Non-observance can result in injury or substan-
tial material damage.
2.3. Electrical work
DANGER due to electrical voltage!
Improper procedures during electrical work
may result in fatal injuries caused by electrical
voltage! This work may only be carried out by
a qualied electrician.
BEWARE of moisture!
Ingress of moisture will result in damage to
the switchgear. During installation and opera-
tion, pay attention to the permissible humid-
ity and ensure the switchgear is installed so it
is overow-proof.
The switchgears are operated with alternating
or three-phase current. The governing national
directives, standards and regulations (e.g. VDE
0100) as well as the requirements of the local
energy supply company must be observed.
The person operating the switchgear must know
where it is supplied with power and how to cut off
the supply. A residual-current device (RCD) must
be provided by the customer.
The section entitled ‘Electrical connection’ must
be observed when connecting the product. The
technicalspecicationsmustbeobservedstrictly.
The switchgear must always be grounded. To do
this, connect the protective earth conductor at
the earth terminal indicated (;). The cross-sec-
tion of the cable for the protective earth conduc-
tor must comply with the local regulations.
If the switchgear has been switched off by a
protective device, it must not be switched on
again until the fault has been corrected.
Use of electronic devices such as soft starters
or frequency converters is not possible with this
switchgear. Pumps must be connected directly.
2.4. Conduct during operation
When operating the switchgear, always follow
the locally applicable laws and regulations for
work safety, accident prevention and handling
electrical products. To help ensure safe working
practice, the responsibilities of employees should
beclearlyspeciedbytheoperator.Allpersonnel
are responsible for ensuring that regulations are
observed.
An interactive menu and a rotary knob on the
front of the housing are used to operate the

34 WILO SE 05/2016 V05 DIN A4
English PRODUCT DESCRIPTION
switchgear, display the operating state, and signal
faults. The housing cover must not be opened
during operation.
DANGER due to electrical voltage!
When performing work on the uncovered
switchgear, there is a risk of fatal electric
shocks occurring. Only operate the switch-
gear with the cover closed!
2.5. Standards and guidelines used
The switchgear is subject to various European
directives and harmonised standards. Refer to the
EC declaration of conformity for precise informa-
tion about these.
Also, various regulations are used as a basis
for operating, installation and dismantling the
switchgear.
2.6. CE marking
The CE marking is attached to the rating plate.
3. Product description
The switchgear has been manufactured with
great care and is subject to constant quality con-
trols. Trouble-free operation is guaranteed if they
are installed and maintained correctly.
3.1. Intended use and elds of application
DANGER - explosive atmosphere!
If the connected pumps and signal transmit-
ter are used in potentially explosive areas,
the Ex-version of the switchgear (SC-L...-Ex)
must be used. Use of the standard switchgear
can lead to fatal injury due to explosions!
Connection must always be carried out by a
qualied electrician.
The SC-Lift switchgear is designed for
• automatic control of 1 to 4 pumps with approval
for potentially explosive areas (SC-L...-Ex variant)
in lifting units and sewage shafts for delivery of
water/sewage.
The switchgear must not
• be installed in potentially explosive areas.
• beooded.
Intended use includes compliance with this man-
ual. Any other use is regarded as non-compliant
with the intended use.
NOTE
For automatic control, suitable signal trans-
mitters(oatswitchorlevelsensor)mustbe
provided by the customer.
3.2. Set-up
Fig. 1: Overview of operating components
1 Main switch 3 Operating knob
2 LC display 4 LED indicators
The switchgear comprises the following main
components:
• Mainswitch:forswitchingtheswitchgearon/off
• Controlpanel:
• LEDs for displaying the current operating state
(operation/fault)
• LC display for displaying the current operating
data and individual menu items
• Operating knob for menu selection and param-
eter input
• Contactor combinations for activating the
individual pumps in direct-on-line start-up and
star-delta start-up, including thermal triggers
for protection against excessive current and time
relays for star-delta changeover.
3.3. Function description
The microcontroller-controlled Smart Control
switchgear is designed for control of up to 4 sin-
glepumpswithaxedspeedcapableoflevel-de-
pendent switching.
Level measurement is via corresponding signal
transmitters, which need to be provided by the
customer. Level measurement is via a two-posi-
tioncontrolforeachpump.Dependingonlllev-
el, base-load and peak-load pumps are switched
on or off automatically. The relevant operating
parameters are set via the menu.
When dry run level or high water level is reached,
a visual signal is output and forced switch-off of
the relevant pumps occurs. Forced switch-on of
the corresponding pumps only occurs if the level
isrecordedbyaseparateoatswitch.Faultsare
recorded and stored in the error log.
The current operating data and operating states
are indicated on the LC display and via LEDs on
the front side. These are controlled via a rotary
knob on the front side.
3.4. Operating modes
The switchgear can be used for two different
operatingmodes:
• Empty
• Fill
Selection is via the menu.
3.4.1. “Empty” operating mode
The reservoir or pump chamber is drained. The
connected pumps are activated when the level
rises and switched off when the level falls.
3.4.2. “Fill” operating mode
Thereservoirislled.Theconnectedpumpsare
activated when the level falls and switched off
when the level rises.
3.5. Technical data
3.5.1. Inputs
• 1x analogue input for the level sensor
• 5xdigitalinputsforoatswitches
• Base-load pump ON
• Peak-load pump(s) ON
• Pumps OFF

Installation and operating instructions Wilo-Control SC-L 35
TRANSPORTATION AND STORAGE English
• High water
• Dry-running protection/water level too low
• 1x input/pump for thermal winding monitoring via
a bimetal or PTC temperature sensor
• 1x input/pump for leakage detection via a mois-
ture probe
• 1x digital input (External OFF) for remote activa-
tion and deactivation of automatic mode
3.5.2. Outputs
• 1x potential-free contact for SSM and SBM
• 1x potential-free contact for the high water alarm
• 1x potential-free contact for starting an external
consumer (e.g. submersible mixer) depending on
standstill times of the connected pumps
• 1xanalogueoutput0-10V,fordisplayofthe
actual level value
3.5.3. Switchgear
Mainsconnection: See rating plate
Max.currentconsumption: See rating plate
Max.switchingcapacity: See rating plate, AC3
Max. fuse protection on
mainsside: See rating plate
Activationtype: See rating plate
Ambient/operating temper-
ature: 0...40 °C
Storagetemperature: -10...+50 °C
Max.relativehumidity: 50%
Protectionclass: IP54
Controlvoltage: 24 VDC, 230 VAC
Alarm contact switching
capacity: max. 250 V, 1 A
Housingmaterial: Steel sheeting, pow-
der-coated exterior
Electricalsafety: Pollution degree II
3.6. Type key
Example: Wilo-Control SC-L 2x12A-M-DOL-WM-Ex
SC
Version:
SC=SmartControlswitchgearforxed-speed
pumps
LLevel-dependent control of pumps
2x Max. number of pumps that can be connected
12A Max. rated current in ampere per pump
M
Mainsconnection:
M = alternating current (1~230 V)
T4 = three-phase current (3~ 400 V)
DOL
Pumpactivationtype:
DOL = direct-on-line starting
SD = star-delta activation
WM
Installationtype:
WM = wall-mounted installation
BM=oormodel
OI = outdoor installation with pedestal
Ex Version for pumps and signal transmitters used
in potentially explosive areas
3.7. Options
• Connection for 3 or 4 pumps
• Customer-specicadjustmentsforspecialappli-
cations
3.8. Scope of delivery
• Switchgear
• Wiring diagram
• TestprotocolinaccordancewithEN60204-1
• Installation and operating instructions
3.9. Accessories
• Float switch for wastewater and sewage free of
faeces
• Float switch for abrasive sewage containing
faeces
• Level sensors
• Printed circuit board for ESM and EBM
• Horn230V,50Hz
• Flashlight230V,50Hz
• Signallamp230V,50Hz
Accessories have to be ordered separately.
4. Transportation and storage
4.1. Delivery
On delivery, check immediately that the ship-
ment is complete and undamaged. If any parts
are damaged or missing, the transport company
orthemanufacturermustbenotiedontheday
of delivery. Claims made after this date cannot be
recognised. Damage to parts must be noted on
the freight documentation.
4.2. Transport
Only the packaging used by the manufacturer or
supplier may be used for transport. This normally
precludes the possibility of damage occurring
during transportation and storage. The packaging
should be stored in a safe place for reuse if the
product is frequently used at different locations.
4.3. Storage
On delivery, switchgears may be placed into tem-
porary storage for up to 1 year until use providing
the details below are observed.
The following should be taken into consideration
forstorage:
• Placethepackagedswitchgearonarmsubsur-
face.
• Our switchgears may be stored at -10 °C to
+50°Catamax.relativehumidityof50%.
The store room must be dry. We recommend a
frost-protected room for storage with a tem-
perature between 10 °C and 25 °C and a relative
humidity of 40% to 50%.
Avoid condensation!
• Seal the threaded cable connections securely to
prevent ingress of moisture.
• Connected power supply cables should be pro-
tected against kinking, damage, and moisture.

36 WILO SE 05/2016 V05 DIN A4
English INSTALLATION
BEWARE of moisture!
Ingress of moisture will result in damage to
the switchgear. During storage, pay attention
to the permissible humidity and ensure the
switchgear is stored so it is overow-proof.
• The switchgear must be protected from direct
sunlight, heat and dust. Heat or dust can cause
damage to electrical components!
• Following a longer period of storage, the switch-
gear should be cleaned of dust before commis-
sioning. If condensate has formed, check the
individual components are working properly.
Defective components must be replaced imme-
diately.
4.4. Return delivery
Switchgears which are returned to the plant must
be clean and correctly packaged. The packaging
must protect the switchgear from damage during
transportation. If you have any questions, please
contact the manufacturer!
5. Installation
In order to prevent damage to the switchgear or
serious injury during installation, the following
pointsmustbeobserved:
• Installation work – assembly and installation
of the switchgear – may only be carried out by
qualiedpersons.Thesafetyinstructionsmustbe
followed at all times.
• The switchgear must be inspected for transport
damage before carrying out any installation work.
5.1. General
For design and operation of technical sewage sys-
tems, observe the pertinent local regulations and
directives for sewage technology (such as those
of the German Association for Water, Wastewater
and Waste).
When adjusting level control devices, make sure
that connected pumps have the minimum water
coverage.
5.2. Installation types
• Wall mounting
• Floor model
• Outdoor installation with pedestal
5.3. Installation
DANGER from installation within potentially
explosive areas!
The switchgear is not approved for potentially
explosive areas and must always be installed
outside of such areas! Non-observance may
lead to fatal injury due to explosion! Always
have the connection carried out by a qualied
electrician.
The following information must be observed
wheninstallingtheswitchgear:
• Theworkmustbecarriedoutbyaqualied
electrician.
• The installation location must be clean, dry and
free of vibrations. Avoid exposing the switchgear
to direct sunlight.
• The customer must provide the power supply
cables.Thesemustbeofsufcientlengthsothat
connection to the switchgear is possible with-
out any problems (no tugging on the cable, no
kinking, no crushing). Check whether the cable
present is long enough for its cross-section and
its installation type.
• Structural components and foundations must be
ofsufcientstabilityinordertoallowtheproduct
tobexedsecurelyandfunctionally.Theoperator
or the supplier is responsible for provision of
the foundations and their suitability in terms of
dimensions, stability and strength.
• The following ambient conditions must be ob-
served:
• Ambient/operatingtemperature:0...+40°C
• Max.relativehumidity:50%
• Overow-proofinstallation
• Check the available consulting documentation
(installation plans, design of installation location,
wiring diagram) is complete and correct.
• Please also observe the applicable national acci-
dent prevention regulations and trade association
safety provisions.
5.3.1. Basic advice on xing the switchgear
The switchgear can be installed on various
structures (concrete wall, mounting rail etc.).
Forthisreason,thexationmaterialprovidedby
the customer must be suitable for the relevant
construction.
Observethefollowinginstructionsforthexation
material:
• Ensure the proper edge clearance in order to
prevent the construction material from tearing or
chipping.
• The depth of the borehole depends on the length
of the bolts. The borehole should be 5 mm deeper
than the bolt length.
• Drilling dust impairs holding strength. Therefore,
Always blow or vacuum out the borehole.
• Makesurethexationmaterialisnotdamaged
during installation.
5.3.2. Assembling the switchgear
Wall mounting
Fix the switchgear to the wall using 4 screws and
4 anchors.
1. Open the cover on the switchgear and place this
on the intended assembly area.
2. Mark out the 4 holes on the mounting surface and
placetheswitchingdeviceontheooragain.
3. Drilltheholesusingaccordingtothexation
information using screws and anchors. If you are
usingdifferentxationmaterials,observethe
information on usage!

Installation and operating instructions Wilo-Control SC-L 37
INSTALLATION English
4. Fix the power supply cable to the wall.
Floor model
Theoormodelissuppliedasstandardwitha
100mmhighpedestalwithacableinlet.Itis
installed free-standing on a level surface with
sufcientbearingcapacity.
Other supports are available on request.
Outdoor installation
The standard mounting pedestal with cable inlet
must be buried as far as the marking or recessed
inaconcretebase.Theswitchgearisthenxedto
this pedestal.
1. Position the pedestal at the desired mounting
location.
2. Insert the pedestal into the ground as far as the
marking.Werecommendxingthepedestalusing
a concrete base as this guarantees the greatest
possible stability.
Ensure the pedestal is plumb-vertical.
3. Secure the switchgear on the pedestal using the
enclosedxationmaterial.
5.3.3. Positioning of signal transmitters
For automatic control of the connected pumps,
a corresponding level control device must be
installed. This needs to be provided by the cus-
tomer.
Float switches or level sensors may be used as
signal transmitters. The corresponding signal
transmitters must be installed according to the
unit's installation plan.
DANGER - explosive atmosphere!
If the connected signal transmitters are used
in potentially explosive areas, the Ex-version
of the switchgear (SC-L...-Ex) must be used.
Use of the standard switchgear can lead to
fatal injury due to explosions! Connection
must always be carried out by a qualied
electrician.
Notethefollowing:
• Whenusingoatswitches,ensurethatthesecan
move unobstructed in the operating space (pump
chamber, reservoir).
• The water level of the connected pumps must not
fall below the minimum.
• The maximum switching frequency for the con-
nected pumps must not be exceeded.
5.3.4. Dry-running protection
Dry-running protection can be provided via a
separateoatswitchorviathelevelsensor.
When using the level sensor, the switching point
must be set via the menu.
A forced switch-off of the pumps always
occurs, irrespective of the selected signal
transmitter.
5.3.5. High water alarm
Thehighwateralarmcanbeviaaseparateoat
switch or via the level sensor.
When using the level sensor, the switching point
must be set via the menu.
Forced activation of pumps only occurs if the
high water alarm is realised via a oat switch
however.
5.4. Electrical connection
POTENTIALLY fatal danger due to electrical
voltage!
Incorrect electrical connections can cause fa-
tal electric shocks! Electrical connections may
only be carried out by a qualied electrician
approved by the local energy supply company,
in accordance with locally applicable regula-
tions.
DANGER - explosive atmosphere!
If the connected pumps and signal transmit-
ter are used in potentially explosive areas,
the Ex-version of the switchgear (SC-L...-Ex)
must be used. Use of the standard switchgear
can lead to fatal injury due to explosions!
Connection must always be carried out by a
qualied electrician.
NOTE
• Depending on the system's impedance and the
connected consumers' max. no. of connections/
hour,voltageuctuationsorvoltagedropsmay
occur. Always have the electrical connections
carried out by an electrician authorised by the
local energy supply company.
• When using shielded cables, the shielding must
be attached to the earthing rod on one side of
the switchgear!
• Observe the installation and operating in-
structions for the connected pumps and signal
transmitters.
• The mains connection current and voltage must
be as stated on the rating plate.
• Fuse protection on the mains side must be in
accordance with the data in the wiring diagram.
All-pole disconnecting, K-type circuit breakers
must be installed!
• A residual-current device (RCD, type A, sinusoidal
current) must be installed in the supply line. Ob-
serve the local laws and regulations on this too!
• Route the power supply cable in accordance with
the valid norms and regulations and according to
the wiring diagram.
• Ground the system (switchgear and all electric
consumers) in accordance with the regulations.