SolarMax TS-SV Guide

Installation manual
SolarMax TS-SV
330TS-SV / 360TS-SV

SolarMax Produktions GmbH
Zur Schönhalde 10
D-89352 Ellzee
E-Mail: [e-mail]
© SolarMax Produktions GmbH 2015

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Contents
1 About this installation manual 6
1.1 Field of applicability 6
1.2 Target group 6
1.3 Where to keep this manual 6
1.3 Symbols used in this manual 6
2 Safety 7
2.1 Safety instructions 7
2.2 Appropriate use 8
3 Description of the station components 9
3.1 SolarMax TS-SV inverter 9
3.1.1 Block diagram of the TS-SV inverter 10
3.1.2 External operating elements and dimensions 11
3.1.3 Scope of delivery 11
3.2 TS-SV master control unit (MCU) 12
3.2.1 Exterior view and dimensions of the MCU 12
3.3 Configuration variants of the station 13
3.3.1 Multi MPPT operation mode 14
3.3.2 Single MPPT operation mode 15
3.4 Additional station components 16
3.4.1 DC fuse unit 16
3.4.2 Autonomous power supply transformer 16
3.4.3 Medium-voltage transformer 17
3.4.4 Medium-voltage switchgear 18
4 Installation 19
4.1 Transport & storage of the inverter 19
4.1.1 Means of transport 19
4.1.2 Storage conditions 20
4.2 Site selection and operating conditions of the inverter 20
4.2.1 Specifications and instructions for site selection 20
4.2.2 Operating conditions at the site 21
4.2.3 Cooling system of the inverter 22
4.3 Recommendations for station construction 22
4.3.1 Heating 23
4.3.2 Excavating the construction site 23
4.4 Lightning protection 24
4.5 Montage 24
4.5.1 Inverters 24
4.5.2 MCU 24

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5 Electrical connection 25
5.1 Guidelines for electrical installation 25
5.2 Earthing of the station components 25
5.3 Connecting the inverter 26
5.3.1 Interior view of the inverter 26
5.3.2 Connecting the inverters to the PV plant 27
5.3.3 Connecting the inverters to the medium voltage transformer 30
5.3.4 Connecting the inverters to the modular bus 32
5.3.5 Assigning addresses to the power units 33
5.3.6 Connecting the shutdown contact 1 (optional) 34
5.4 Connecting the MCU 36
5.4.1 Interior view of the MCU 36
5.4.2 Connecting the DC feed line to the MCU 37
5.4.3 Connecting the AC feed line to the MCU 37
5.4.4 Connecting the MCU to the modular bus 38
5.4.5 Connecting the protective earth (PE) line to the MCU 38
5.4.6 Interface and contacts of the MCU 38
5.5 Configuring the MCU 41
5.6 Connecting the other station components 42
5.7 Application examples for single-MPPT operation 43
5.7.1 DC fuse unit with several DC bus bars 44
5.7.2 DC Fuse unit with common DC bus bar 46
6 Commissioning 48
6.1 Inspections prior to startup 48
6.1.1 Identification and characteristics 48
6.1.2 Station 48
6.1.3 Inverters 49
6.1.4 Operational configuration and MCU 49
6.1.5 DC wiring in general 49
6.1.6 DC wiring for multi MPPT operation 49
6.1.7 DC wiring for single MPPT operation 50
6.1.8 AC wiring 50
6.1.9 Data communication 50
6.1.10 Ear thing 50
6.2 Commissioning (Initial Setup) 51
7 Technical data 53
7.1 Efficiency curve 55
7.2 Temperature-dependent output reduction 57
7.3 Individual country settings 58
7.3.1 SM330TS-SV 58
7.3.2 SM360TS-SV 60
8 Warranty 63

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1 About this installation manual
1.1 Field of applicability
This installation manual describes how to install and commission the inverters
SM330TS-SV, SM360TS-SV (TS-SV inverters) and the control unit TS-SV Master Control
Unit (MCU).
1.2 Target group
This installation manual is intended for the station outtter (responsible qualied elec-
trician) who is responsible for building the station and designing the project-specic
components.
1.3 Where to keep this manual
The system operator must ensure that this installation manual is available to those
responsible for the power plant at all times. If this original manual is lost, an up-to-date
version can be downloaded from our website at all times (www.solarmax.com).
1.3 Symbols used in this manual
From time to time you will see the following symbols when reading this installation manual:
DANGER
This symbol indicates that ignoring this instruction can lead directly to serious
injury or death.
CAUTION
This symbol indicates that ignoring this instruction can lead to damage to your
inverter or your PV power plant.
NOTE
This symbol indicates information which is especially important for operating
the inverter.

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2 Safety
2.1 Safety instructions
DANGER
 In daylight the PV generator supplies the inverter with a dangerously high DC
voltage.
 Only qualied electricians who have already completely read and understood this
manual in advance may install and open SolarMax inverters and the MCU.
 The inverter has to be installed in an enclosed electrical plant room.
 The qualied electrician is responsible for adhering to the valid local application
installation and safety instructions.
 Ignoring the installation and safety instructions shall cancel any and all warranty
and liability claims.
 Touching live parts is life-threatening.
 The inverters and the MCU must remain closed at all times during operation.
 The DC and AC feed lines must be disconnected according to the instructions and
secured against being reconnected accidentally before you open the inverter or
the MCU.
 After disconnecting the inverter wait at least 5 minutes before opening the device
to permit internal capacitors to discharge.
NOTE
 This document cannot take the place of support from the distributor. For assis-
tance please get in touch with your personal contact.
 Check that you have the current version of the document by visiting our website.

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2.2 Appropriate use
The SolarMax TS series inverters are designed exclusively to convert the direct current
generated by PV modules into alternating current which conforms to the parameters of
the public grid. Any other use is contrary to the purpose for which the inverters were
designed.
The inverter may only be connected to a suitable medium-voltage transformer. It is not
permitted to connect the unit directly to a medium-voltage switch circuit or to the power
grid.
SolarMax Produktions GmbH accepts no liability for damages resulting from using
inverters for purposes other than this. Any modications to the inverter performed by the
system operator or the electrician without a review and approval by SolarMax Produktions
GmbH are prohibited.

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3 Description of the station
components
This chapter describes the station components.
3.1 SolarMax TS-SV inverter
The main component of a station is the SolarMax TS-SV central inverter. It converts
the PV generator’s direct current into alternating current which conforms to public grid
parameters. The output of a station depends on the number of installed TS-SV inverters.
One to four TS-SV inverters together with an MCU make up an inverter system that is
connected to a medium-voltage transformer.
The TS-SV inverter consists of three independent power units. Each power unit has its
own MPP tracker, DC-end overvoltage conductors, power switches on the DC and AC end
(Q1 to Q6), a contactor at the AC end (K1 to K3) and EMV lters. All power switches are
accessible from outside when the inverter casing is closed.
The control units of the power units have two digital signal processors (DSP) which
assume all the monitoring, controlling and regulating tasks. All the safety-relevant values
are continuously monitored and compared by both processors. The result is greater oper-
ating safety and reliability. The DSP’s high performance enables precise and rapid identi-
cation of the maximum power points (MPP) of the PV generator and, combined with the
low-loss power unit, delivers maximum yields. The completely digital regulation ensures
outstanding quality of the current fed into the grid which means extremely negligible grid
reactions.
The inverters of the TS-SV series are capable of delivering reactive power if necessary to
actively support the mains during short blackouts, to reduce output in response to rising
mains frequency and to receive and implement remote control commands (power output
reduction, etc.).
The inverter comes from the factory congured for multi-MPPT operation. All the DC
inputs of the installed inverters must be connected in parallel and tted with fuses for the
single MPPT operating mode. A short description of these operating modes can be found
in section 3.3 “Conguration variants of the station”.
The inverter is not tted with potential separation. This is provided by the medium-voltage
transformer.

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3.1.1 Block diagram of the TS-SV inverter
U
PU1
K1
SolarMax TS-SV
U
PU2
K2
U
PU3
K3
ModuarBus (MCU)
23 23 23
DC Input 1
DC power switch Q4 AC power switch Q1
AC output 2 AC output 3 AC output 1
DC power switch Q5 AC power switch Q2 DC power switch Q6 AC power switch Q3
DC Input 2
DC Input 3
EMC lter
EMC lter EMC lter
EMC lter
EMC lter EMC lter

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3.1.2 External operating elements and dimensions
1970
1090
690
80
1200
80640
800
80
80 493 54 493
4 x ø 20
4 x
M16 threaded
cylinder
(Fastening nuts for
lift assembly)
DC power switch
AC power switch
Type plate
Opening for the
modular bus cable
3.1.3 Scope of delivery
The scope of delivery may vary depending on the project specications. But as a rule,
along with the inverter or the MCU, the following parts are supplied:
 Inverters:
– 4 x short perforated grid front/back
– 2 x long perforated grid side
– Hardware (screws, spring washers, etc.)
– Phase separation elements
– 1 Network cable RJ45 Cat. 6 S/FTP (2 m)
– 4 eye bolts M16
 MCU:
– 1 Network cable RJ45 Cat. 6 S/FTP (5 m)
– 1 Network cable RJ45 Cat. 6 S/FTP (10 m)
– Fastening elements
– Operating manual

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3.2 TS-SV master control unit (MCU)
The TS-SV master control unit (MCU) is the control and operating unit for as many as
four TS-SV inverters. The interfaces and contacts of the MCU enable innumerable com-
munications and monitoring variants, see 5.4.6 “Interfaces and contacts of the MCU”.
The MCU is connected to the TS-SV inverter via a modular bus interface. The MCU is
powered both from the AC end (from the autonomous power supply transformer) as well
as from the DC end. This enables the MCU to operate around the clock. The MCU has a
switch that you can use to congure the single or multi MPPT operating mode see 5.5
“Conguring the MCU”.
The MCU has a mounting rail that enables the installation of the MaxWeb xp web-based
data logger and the potential equalization set (PAS).
3.2.1 Exterior view and dimensions of the MCU
600 150
520
550
470
Graphics display
status LED
Main switch

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3.3 Conguration variants of the station
Using the TS-SV inverter as basic module, stations with the following output powers can
be built:
Number of SM330TS-SV Max. apparent output [kVA]
1 340 kVA
2 680 kVA
31 020 kVA
41 360 kVA
Number of SM360TS-SV Max. apparent output [kVA]
1 370
2740
31 110
41 480
The TS-SV inverter enables the realisation of stations in either a multi or single MPPT
operating mode.
NOTE
 The station must be designed for either the multi MPPT or for the single MPPT
operating mode. It is not possible to mix operating modes.
 The combination of SM330TS-SV and SM360TS-SV inverters in the same station
is neither permitted nor technically possible.

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3.3.1 Multi MPPT operation mode
In the multi MPPT operating mode each power unit operates its own MPP tracker, allowing
the connection of as many as three mutually independent PV generators to each TS-SV
inverter.
Station with three TS-SV inverters in the multi MPPT operating mode
TS-SV
3
3
PU1
PU2
PU3
PU1
PU2
PU3
TS-SV
TS-SV
PU1
PU2
PU3ModularBus
ModularBus
3
MCU
DC input
1
DC input
2
DC input
3
DC input
4
DC input
5
DC input
6
DC input
7
DC input
8
DC input
9
MV transformer
AC output
For this variant, the MCU assumes the master control of the TS-SV inverter, and also
acts as a joint user interface and enables the integration of the station into a MaxComm
communications network.

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3.3.2 Single MPPT operation mode
In single MPPT operating mode all the DC inputs of the inverters are wired parallel inside
the station. The shared MPP tracker is monitored for all the power units by the MCU.
Station with three TS-SV inverters in the single MPPT operating mode
PU1
PU2
PU3
PU1
PU2
PU3
PU1
PU2
PU3
3
3
3
MCU
TS-SV
TS-SV
TS-SV
ModularBus
ModularBus
DC input
1
DC input
2
DC input
3
DC input
4
DC input
5
DC input
6
DC input
7
DC input
8
DC input
9
AC output
DC fuse units
MV transformer
DC fuse units
DC fuse units
For this variant, the MCU acts as a master MPP tracker control unit for all the TS-SV
inverters, and also acts as a joint user interface and enables the integration of the station
into a MaxComm communications network.
The DC inputs are connected in parallel outside the inverters, usually as part of the DC
fuse box.

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3.4 Additional station components
The following station components are not supplied by SolarMax Produktions GmbH:
 DC fuse box
 Autonomous power supply transformer (transformer for the station‘s own power
supply)
 Medium voltage transformer and 400 V low-voltage installation
 Medium voltage switchgear
 AC fuses between each inverter and the medium-voltage transformer
The design of these components is in the hands of the station outtter. The details con-
tained in the following sections are only standard values and typical characteristics.
3.4.1 DC fuse unit
The DC fuse unit is only needed if the intention is to operate the station in single MPPT
operating mode. The station outtter is responsible for constructing the DC fuse unit.
When you dimension the DC fuse unit keep in mind the connection conditions for the
single MPPT operating mode, see 5.3.2 “Connect inverter to the PV plant”.
3.4.2 Autonomous power supply transformer
The autonomous power supply transformer powers the MCU and other, project dependent
consumers (lighting, MaxWeb xp, fans, etc.) inside a station. The use of an autonomous
power supply transformer is necessary if no local 230 V / 400 V mains are available. The
selection and dimensioning of the transformer is in the hands of the station outtter.
Typical characteristics
The actual size of the autonomous power supply transformer (if necessary) depends on
the number and type of the additional consumers inside the station.
Technical data
Type 3 phases, 50 Hz
Power output ≥ 5 kVA
Number of 3-phase windings 2
Voltage 1 SM330TS-SV: 280 V (D)
SM360TS-SV: 320 V (D)
Voltage 2 400 V (yn)
Vector group Dyn0
Protective class IP22

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Technical data
Max. ambient temperature 40 °C
3.4.3 Medium-voltage transformer
The medium-voltage transformer is the link between the local 280 V network within a sta-
tion and the medium-voltage network. The inverter may only be connected to the power
grid via a medium-voltage transformer. The medium-voltage transformer provides the
potential separation between the PV power plant and the medium-voltage switch system
or the power grid. The inverter does not have its own potential separation. The medium-
voltage transformer is not included in the scope of supply.
Determining the size
The dimensioning of the medium-voltage transformer depends on the number of TS-SV
inverters used. Dimension the medium-voltage transformer in such a way that its no-
load losses remain as low as possible. The following reference values are applicable to a
maximum ambient temperature of 40 °C.
Number of SM330TS-SV inverters Size of the medium-voltage transformer [kVA]
1400
2630
31000
41 250
Number of SM360TS-SV inverters Size of the medium-voltage transformer [kVA]
1400
2800
31000
41 600
Requirements
The requirements are listed in the following table, using a 1 000 kVA medium-voltage
transformer as example:
1 000 kVA medium-voltage transformer
Type 3 phases / 50 Hz (on rollers)
Power output 1 000 kVA
Number of 3-phase windings 2 (1 MV, 1 LV)

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1 000 kVA medium-voltage transformer
Primary voltage (MV) 20 kV (depending on project and site)
Insulation level 24 kV
Primary (MV) tapping ±2.5 % and ±5 %
Secondary voltage (LV) SM330TS-SV: 0.28 kV
SM360TS-SV: 0.32 kV
Standard IEC60076
Vector group Dd (no start point, phase is irrelevant)
Short circuit voltage UK 4 %…6 %
No-load losses < 1 300 W (oil) / < 2 000 W (dry) CC
Load losses (@75 °C) < 11 000 W CC
Environment Internal application (no air conditioning
required)
Max. ambient temperature 40 °C
Max. installation altitude < 2 000 meters above sea level
Relative humidity 5 %…95 %
Insulation Basic insulation designed for pulse operation
of an inverter
Test voltages 50 kV (medium voltage to low voltage) / 8 kV
(low voltage to protective conductor PE)
In addition, the medium-voltage transformer must have a test record of the nal test that con-
tains details about the insulation measurements, no-load and full-load losses.
Requirements for oil-based medium-voltage transformers
In addition to the details in the “1000 kVA medium-voltage transformers” table, oil-based
medium-voltage transformers must have the following specication:
 Design Art IP00 NV / IP54 medium-voltage transformer and medium-voltage con-
nector with hermetically closed tank
 Accessories: DGPT2 (full transformer protection)
3.4.4 Medium-voltage switchgear
The correct installation of the medium-voltage switchgear is in the hands of the station
outtter. The local regulations and guidelines must be followed.

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4 Installation
4.1 Transport & storage of the inverter
DANGER
 The inverter is a heavy device which, if not handled properly, can tip over during
transport and cause serious personal injuries.
 The inverter must be transported upright.
4.1.1 Means of transport
Forklift trucks
The inverter has openings in its base to allow it to be transported by a forklift truck.
Secure the devices against falling.
Crane
At the upper corner struts the inverters have four M16 threaded cylinders (weld nuts). You
can screw M16 eye bolts into these cylinders. These allow the inverter to be lifted by a
crane or forklift truck.
DANGER
 If you use a forklift or some other lifting equipment take extreme caution. Make
sure the lifting equipment has adequate lifting capacity.
 Secure the inverter against falling while it is being moved by a forklift truck.
 Whenever this is done always make sure that the inverter’s weight is correctly
distributed on the lifting equipment (ensure that centres of gravity are properly
distributed).
 Ropes or strips must have an angle of > 60° to the inverter top.
 Necessary minimum lifting capacity of the transport vehicle or lifting equipment:
950 kg (weight of the inverter).

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4.1.2 Storage conditions
Store the inverter in a dry, enclosed space.
CAUTION
Possible damage to the device! Never store the inverter outdoors. Not even for a short
time.
4.2 Site selection and operating conditions of the inverter
4.2.1 Specications and instructions for site selection
Choosing a suitable location for the inverter is decisive for its operating safety as well as
its expected service life and efciency. An ideal location is indoors or in a container with
the following characteristics:
 The site must be dry to prevent any condensation from collecting in the inverter: no
puddles, no damp masonry walls, no openings where snow or rain can enter.
 The ambient air of the inverter must be free from dust, salt, and ammonium vapours.
If required (e.g. for installations near the sea or in desert areas), the ambient air of the
inverter must be ltered (e.g. with an air conditioning unit or a lter).
 Do not install the inverter in rooms or work areas which contain or are made of com-
bustible materials. Follow the local re safety regulations.
DANGER!
Fatal electric shock hazard! – The inverter must be installed in an enclosed electrical
plant room so that unauthorized persons have no access.
CAUTION
Fire hazard! - Suitable for mounting on concrete or other non-combustible surface
only!
 Because the inverter is a source of noise, do not install it near residential spaces.
 Make sure that the oor of the installation site is level and its bearing capacity is
adequate.
 The inverter must be installed on the entire contact face of the 6 bases.