Grant AS 1.0 Montageanleitung
Grant Grid-Connected Inverter
For Grant Solar PV Systems
Installation & User Instructions
Doc. 92. Rev. 00 August 2010
PROVISIONAL COPY
2
Contents
Contents
1Introduction &
General Requirements 3
1.1 Installation Requirements 3
1.2 Signs used in this manual 3
1.3 Safety instructions 3
1.4 Disposal information 3
2Product information 4
2.1 Product description 4
2.2 Technical specification 5
3System Design 6
3.1 Guidance 6
4Installation 7
4.1 Siting 7
4.2 Mounting 8
4.3 Electrical wiring 9
4.4 Energising the system 10
4.5 De-energising the system 10
5Inverter Display and Indicators 11
5.1 ED indicators 11
5.2 CD panel 11
5.3 Normal operation 12
5.4 System operating modes 13
5.5 Fault displays 14
5.6 Power generation data 15
6Fault Finding 16
6.1 Grid volt error 16
6.2 TVS/Over power 16
6.3 DC supply issue 16
6.4 Inverter defect 16
7Warranty information 17
7.1 Grant Grid Connected Inverter Warranty 17
8Notes 18/19
1 Introduction & General Requirements
1.1 Installation Requirements
Thank you for purchasing a Grant grid-
connected Inverter from our Solar PV
Range. This installation manual must be
read carefully before you begin installing
the inverter.
This inverter must be installed by a
competent person in compliance with
all current legislation, codes of practice
and local by-laws covering the
installation of electrical equipment.
Please also make sure that any
installation complies with the
instructions contained in this installation
instruction manual.
1.2 Signs used in this manual
WARNING - This sign
indicates that the
following instructions
must be read and
complied with. Failure to
do so may result in Fire,
Injury and death.
CAUTION - This sign
indicates that the
following instructions
must be read and
complied with. Failure to
do so may result in
damage to property.
1.3 Safety instructions
All electrical installations must be
carried out in accordance with the
Electricity at Work Regulations 1989
and BS. 7671:2008 – IEE Wiring
Regulations 17th Edition (including any
amendments).
Isolate and disconnect both the AC
and the DC connections to this inverter
before commencing any maintenance.
High power capacitors inside the
inverter may be storing high voltages
even with the AC/DC connections
isolated.
The inverter must be mounted onto a
solid fire resistant wall. The inverter
weighs between 22.5 and 42.5kg
(depending on the model) and will
require two people to lift it into position.
Do not touch any part of the inverter
whilst in operation as the casing
temperature may exceed 60ºC.
Do not disconnect the AC or the DC
plugs from the inverter unless power
has been removed from both the AC
and DC sides. Doing so will damage
the inverter and may result in
electrocution.
Introduction &
General Requirements
3
Please leave this manual with the householder after installation.
1.4 Disposal information
Waste Electrical
and Electronic
Equipment (WEEE)
& Restriction of
the Use of Certain
Hazardous
Substances in
Electrical and
Electronic Equipment (RoHS) Directives.
The Waste Electrical and Electronic
Equipment Directive (WEEE) is an EU
initiative to protect the environment by
reducing the amount of electrical
equipment including PCs, servers,
printers, laptops and other electrical
products going into landfill sites.
This product is classed as Electrical
and Electronic Equipment (EEE) and
should not be disposed of with your
general waste.
2 Product Information
roduct
Information
4
2.1 roduct Description
The Grant range of PV grid-connected
inverters are designed for small to
medium power grid-connected PV
generation systems.
Features of the Grant inverter range
include:
* Sealed stainless steel enclosure
designed and certified for IP65
protection.
* Isolation transformer for safety and
reliability without compromising
conversion efficiency
* Plug-in connections for AC , DC and
communication (optional accessory)
cables.
* Power size and input voltage range for
each input MPPT channel
* Transient voltage suppressor at both
input and output terminals to protect
the inverter from transient high voltages
induced by lightening or other sources.
roduct
Information
5
2.2 Technical Specification
System
Design
6
3 System Design
3.1 Guidance
Incorrect system design could cause
damage to the inverter.
Non-optimal design will lower the
efficiency of the system and waste
inverter power capacity.
A guide matrix is provided below for
each inverter model when using the
Grant GPV180M Solar PV modules.
CAUTION:
On no account must
these values be
exceeded.
Installation
7
4 Installation
4.1 Siting
The Grant range of inverters can be
installed either indoors or outdoors.
When siting the inverter, ensure that:
1) Sunlight cannot fall directly onto the
inverter enclosure.
2) The inverter is installed on a concrete
or brick wall.
3) The wall will not have a tilt angle
greater than 30º.
The inverter should be mounted a
minimum of 1.2m from ground level.
There must be a minimum space of
500mm above the top of the inverter
and 200mm on both sides – Figure 1.
CAUTION:
Do not install the
inverter in an explosive
or flammable
environment.
The site of the
installation will be dry,
clean from dust and
sufficient room to allow
free air to circulate.
CAUTION:
The site of the
installation should not
be an area that is in
constant use by people
or animals.
Do not touch the
enclosure while the
inverter is in operation.
The temperature of the
casing may exceed
60ºC. Risk of burns.
WARNING:
The inverter m st not be
covered or partially
covered at any time, d e
to risk of fire!
Figure 1: Clearances around inverter, viewed
from the front.
Installation
8
4 Installation continued...
WARNING:
The inverter m st not be
installed on a flamable
s rface, d e to risk of
fire!
4.2 Mounting
Using the two holes on the mounting
bracket as a guide, mark and drill two
12mm holes.
Assemble the expansion bolt set as
shown in Figure 2, and secure the
mounting plate to the wall.
ift the inverter (with two people) and
hang on the top edge of the mounting
plate.
Fix the positioning bolt to the bottom
hole of the mounting bracket.
Fasten the positioning bolt under the
inverter. See Figure 3
1) Mounting Bracket
2) Nut
3) Spring washer
4) Flat washer
5) Expansion tube
6) Bolt
Figure 2: Bolt Assembly
Figure 3: Bolt Positioning
Installation
9
4.3 Electrical wiring
Before connecting the AC and DC
cables to the inverter, check the data
plate on the inverter matches the
installation requirements for both AC
and DC. (Voltage, power, frequency,
etc). Failure to do so could damage
the inverter or cause a malfunction
during operation.
The Grant range of inverters are
designed only for Solar PV Grid-
Connected installations only. It is
forbidden to connect this inverter to a
public DC network or an island (battery)
system.
Only Grant Solar PV modules
(GPV180M) are permitted to be fitted to
this inverter. Do not connect any other
type of DC generating device to this
inverter.
DC CONNECTION
The length of the cable between the PV
array and the inverter should not
exceed 10m. This includes any DC
isolators that are fitted between the
array and the inverter.
onger cables could lower the overall
system efficiency and could cause
electromagnetic interference.
* The inverter uses a MC Type4 DC
plug and socket for connecting the PV
array cables.
* The cross section of the cable must
not be less than 4mm².
* The DC array cable must be rated for
1000VDC
A C CONNECTION
The flex used for each inverter is as
follows:
* For Grant AS1.0 and AS1.5 inverters,
heat resistant 1.5mm² flex must be
used.
* For AS2.0 and AS3.0 inverters, heat
resistant 2.5mm² flex must be used.
The connection of the wires to the AC
plug is shown on Figure 4.
Figure 4: AC Plug Wiring diagram
Installation
10
4.5 De-energising the system
Irrespective what condition the inverter
is in, carry out the following instructions
In the order they appear to safely
isolate the inverter.
Turn off and lock off the DC isolator(s).
Turn off and lock off the AC isolator(s).
If maintenance on the DC side is
required, disconnect the DC MC Type4
plugs from the inverter. If maintenance
on the AC side of the inverter is
required, disconnect the DC MC Type4
plugs and then disconnect the AC plug
from the inverter.
4.4 Energising the system
CAUTION
Check that the voltage of
the completed PV string
does not exceed 400V and
note the polarity of the
MC4 connectors is correct.
Check the AC isolator(s)
are in the ‘off’ position and
that there is no power
being supplied to the
inverter.
Connect the AC plug to the inverter and
screw the securing ring hand tight. Isolate
the DC isolator(s). Connect the MC Type4
connecters to the inverter. Turn on the DC
isolator(s). Note that the CD display on
the inverter reads ‘ Grid Volt Error – Grid
Frequency Error’.
Turn on the AC isolator(s). The inverter now
takes approximately 1 minute to carry out
self-diagnostic checks on the DC and AC
conditions. Check the operation status by
scrolling through the CD displays one by
one. Make sure the system is now in
normal operation mode.
For references to the LCD display see
section 4.
4 Installation continued...
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