Steca coolcept User manual
Installation and operating instructions
Notice d'installation et d'utilisatio
EN
coolcept coolcept-x
747.431 | Z09 | 2015-09-30
747.431 | Z09 | 2015-09-30
Table of contents
1 Preface.................................................................................................................................. 5
2 General information............................................................................................................. 6
2.1 General safety notices................................................................................................... 6
2.2 Identification................................................................................................................. 7
2.3 Scope of delivery........................................................................................................... 9
2.4 Intended use................................................................................................................. 9
2.5 About this manual....................................................................................................... 11
3 Structure and function...................................................................................................... 14
3.1 Housing....................................................................................................................... 14
3.2 Operating buttons....................................................................................................... 16
3.3 Display......................................................................................................................... 16
3.4 Cooling........................................................................................................................ 25
3.5 Grid monitoring........................................................................................................... 25
3.6 Data communication................................................................................................... 25
4 Installation.......................................................................................................................... 33
4.1 Safety measures for the installation ............................................................................ 33
4.2 Mount the inverter ..................................................................................................... 35
4.3 Prepare AC connection ............................................................................................... 36
4.4 Prepare DC connections .............................................................................................. 39
4.5 Prepare the data connection cable ............................................................................. 39
4.6 Connect inverter and switch on AC ............................................................................ 39
4.7 Initial commissioning of the inverter .......................................................................... 40
4.8 Feed-in management................................................................................................... 47
4.9 Switch DC on .............................................................................................................. 48
4.10 Dismount the inverter................................................................................................ 48
5 Operation............................................................................................................................ 50
5.1 Overview of operating functions................................................................................. 50
5.2 General operating functions ....................................................................................... 51
5.3 Important operating functions.................................................................................... 51
5.4 Internet portal............................................................................................................. 53
6 Self test............................................................................................................................... 61
7Fault rectification............................................................................................................... 63
8 Maintenance and disposal................................................................................................. 69
8.1 Maintenance............................................................................................................... 69
8.2 Disposal....................................................................................................................... 69
9 Technical data.................................................................................................................... 70
9.1 Inverter........................................................................................................................ 70
9.2 AC cable and line circuit breakers................................................................................ 82
9.3 Table of countries........................................................................................................ 82
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1 Preface
Thank you for choosing inverters from the coolceptproduct line of Steca Elektronik GmbH . By using
solar energy, you are making a significant contribution to environmental protection; by reducing the
amount of carbon dioxide (CO2) and other harmful gases that burden the earth's atmosphere.
Maximum efficiency with a long service life
The innovative inverter topology is based on a single-stage transformer-less circuit concept and is
integrated into all devices in the coolcept series. This unique technology allows peak efficiencies of
98,0 % or 98,6 % to be achieved. Depending on the type, the European efficiency of the devices is
also significantly greater than 98 % and sets new standards in photovoltaic grid-feed systems.
A new and unique cooling concept inside the inverter ensures an even distribution of heat and a
long service life.
Designer casing and easy installation
For the first time, the very high efficiency allows the use of a designer casing made of plastic for the
coolcept inverters. This offers many advantages. The surface temperatures of the devices overall
remains extremely low. In addition, there are clear benefits for the installation. The coolcept-x
inverters have a sturdy metal casing that allows them to be also used outdoors.
The lightweight devices weigh only 9 or 12 kg and can be easily and safely mounted on a wall. The
supplied wall bracket and practical recessed grips for right and left handed installers make
mounting of the device simple and convenient. All connections and the DC circuit breaker are
externally accessible.
Visualization and accessories
The devices have a graphic display, with which the energy load values, actual capacities, and
operating parameters of the photovoltaic system can be visualized. The innovative menu offers the
possibility of individual selection of the different measured values.
See www.stecasolar.com for further information on accessories. Your installer can, of course, also
give you more information about the options and accessories that are available.
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2 General information
2.1 General safety notices
nThis document is part of the product.
nInstall and use the device only after reading and understanding this document.
nAlways perform the measures described in this document in the sequence specified.
nKeep this document in a safe place for the entire service life of the device. Pass the document
on to subsequent owners and operators of the device.
nThe yield of the system can be reduced through improper operation
nIf the housing is damaged, do not connect the device to the DC or AC lines
nTake the device out of service immediately and disconnect it from the mains supply and the
solar modules if one of the following components is damagedM
–Device (not functioning, visible damage, smoke, penetration of liquid etc.)
– Lines
– Solar modules
Do not switch the system on again before
– the device has been repaired by a dealer or the manufacturer,
– damaged cables or solar modules have been repaired by a technical specialist.
nNever cover the device
nDo not open the casing: Risk of death. Invalidation of the guarantee.
nFactory labels and markings must never be altered, removed or rendered unreadable.
nComply with the instructions of the respective manufacturer when you connect an external
component that is not described in this document (e. g. external data loggers) Components
that are incorrectly connected can damage the device.
Safety information on the device (coolcept Indoor)
①Dangerous voltages can remain present on the
components up to 10 minutes after switching off the DC
circuit breaker and the line circuit breaker.
②Comply with the instructions in the manual!
③Serial number as a bar code and in plain text
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Safety information on the device (coolcept Indoor)
①Caution: Surface may be hot
②Dangerous voltages can remain present on the
components up to 10 minutes after switching off the DC
circuit breaker and the line circuit breaker.
③Comply with the instructions in the manual!
④Serial number as a bar code and in plain text
2.2 Identification
Feature Description
Types coolcept (Plastic housing): StecaGrid 1500, StecaGrid 2000,
StecaGrid 2500, StecaGrid 3010, StecaGrid 3600, StecaGrid 4200
coolcept-x (stainless steel housing): StecaGrid 1500x,
StecaGrid 2000x, StecaGrid 2500x, StecaGrid 3010x,
StecaGrid 3600x, StecaGrid 4200x
Version status of the
manual
Z09
Manufacturer's address See
Ä
Contact, p. 84
Certificates See Appendix ⇒ Certificates and
www.stecasolar.com ⇒ coolcept – coolcept-x
Optional accessories nExternal data loggers:
–WEB‘log from Meteocontrol
–Solar-Log from Solare Datensysteme
nTermination plug for RS485 bus
–IP21: 752,856
– IP65: 740,864
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Rating plate
1
7
2
3
4
5
6
8
⑨
①Bar code for internal purposes
②Protection class
③Technical data of the DC input
④Article number and product designation
⑤Manufacturer's address
⑥Symbol Protection class II and CE mark
⑦Country of manufacture
⑧Technical data AC output
⑨Standard for grid monitoring
Notes
–For Australia only: Mask off the Protection Class IIsymbol on the type plate, as described
on
Ä
p. 35 .
–For the serial number, see
Ä
p. 6 and
Ä
p. 7
–For the position of the rating plate, see
Ä
3.1, S. 14f.
EU Declaration of Conformity
The products described in this document comply with the applicable European directives.
Certificates for the products are provided at www.stecasolar.com ⇒ PV GRID CONNECTED ⇒
Grid inverters
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2.3 Scope of delivery
nInverter ①, type coolcept (plastic housing) or coolcept-x (stainless steel housing, IP65)
nMounting plate ② for type coolcept or coolcept-x
nAC plug ③
n1 pair SUNCLIX plug-in connectors ④
n3 sealing caps (for RJ45 socket; only coolcept-x) ⑤
nBrief installation and operating instructions⑥
①②
③④⑤
⑥
2.4 Intended use
nThe inverter must only be used in grid-coupled photovoltaic systems. The inverter is suitable for
all solar modules with connections that do not need to be grounded.
nSolar modules must be used that have an IEC 61730 class A rating because the inverter does
not have electrical isolation.
nIf the maximum AC operating voltage is higher than the maximum system voltage of the
photovoltaic generator, then solar modules must be used that have a maximum system voltage
that is higher than the AC grid voltage.
Note
An overview of suitable solar modules is available at www.stecasolar.com
Þ
PV GRID
CONNECTED
Þ
Service and support.
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Potential curves of the plus (+) and minus (–) DC connections with respect to PE
UPV = Potential between the plus (+) and minus (–) DC‑connections
StecaGrid 1500/2000 and 1500x/2000x
375 V
−350 V
DC (+)
DC (−)
U
t
0 V
UPV= 350 V
375 V
−75 V
DC (+)
DC (−)
U
t
0 V
UPV= 75 V
Fig. 1: Potential curves of UPV at 75 V (left) and 350 V (right)
StecaGrid 2500/3010 and 2500x/3010x
125 V
−160 V
DC (+)
DC (−)
U
t
0 V
−320 V
UPV = 125 V
180 V
−180 V
−250 V
250 V
320 V
0 V
−320 V
U
t
UPV = 500 V
DC (+)
DC (−)
Fig. 2: Potential curves of UPV at 125 V (left) and 500 V (right)
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