Siliken SE3.3Ni User manual
Siliken Electronics S.L. Ronda Isaac Peral y Caballero,14 - Parque Tecnológico E-469 0 Paterna - Valencia - Spain
Phone: (+34) 902 41 22 33 - Fax.: (+34) 96 070 92 65 [email protected] - www.silikenelectronics.com
SE3.3Ni - 3. Ni - 4.6Ni
Date: 05/10/2010
Single-phase power grid-connected inverters
User's manual
SILIKEN appreciates your support for our products.
We recommend that you read this instruction manual carefully in its entirely before handling the Inverter.
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
Safety
SAVE THESE INSTRUCTIONS This manual contains important instructions of models SE3.3Ni, SE3. Ni & SE4.6Ni that shall be followed
during installation, application and maintenance of the PV inverter.
Safety Precautions/Safety Notes
Only training-qualified personnel are allowed to perform the electrical installation, wiring, opening and repair of the SE inverters. Even if no
external voltage is present, the SE inverters may still contain high voltage and the risk of electrical shock.
The temperature of the heat sinks outside of the device could exceed 70°C (15 °F) in normal operation. There is the risk of burn injury by
inadvertent contact.
The following general safety precautions must be observed during all phases of operation, service, installation and repair of this device. Failure
to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and
intended use of the device. The manufacturer assumes no liability for the customers failure to comply with these requirements.
Safety Sym ols
To reduce the risk of injury and to ensure the continued safe operation of this product, the following safety instructions and warnings are marked
in this manual.
!
Warning, risk of electric shock
Presents safety information to
prevent injury or death to users
and/or installers.
Caution (refer to accompanying
documents)
Presents information to prevent damage
to this product.
Earthground symbol
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
General Safety Precautions
Training-qualified personnel are allowed to mount, reconfigure or repair this PV inverter. Also, licensed electricians are allowed to install and
inspect the permanently-wired system.
Remove all conductive jewelry or personal equipment prior to installation or service of the device, parts, connectors, and/or wirings.
Ensure there is no grounding path through the human body. Well-insulated guards, e.g. insulated mat or shoes, are necessary when working
the operating device.
Use safety guard against risks of electrical shock or personal injury by any sudden component failure.
Follow the instructions manual and all information on cautions or warnings must be adhered to.
Use proper lifting techniques when handling enclosure, equipment or parts.
The list does not contain all measures pertinent to the safe operation of the device. If special problems arise which are not described in
sufficient detail for the purposes of the buyer, contact your specialized dealer or technician.
Safety Installation and Operation
Installation of the device must be in accordance with the relevant electrical installations stipulated by local distribution network operator (DNO).
Correct grounding, short-circuit and/or overcurrent protection must be provided to ensure operational safety.
Read all instructions and cautionary remarks in the manual before installation.
Switch off the circuit breakers before installation. Keep dry when working the inverter.
It energizes when the PV arrays are exposed to light. Cover the arrays with opaque (dark) material before installation.
Check both AC and DC connections with a digital voltmeter prior to any installation or removal procedures.
Install the inverter out of direct sunlight.
Risk of electrical shock may be contained even if no external voltage is present.
Allow at least 5 minutes for the inverter to discharge completely after disconnecting the AC and DC sources from the inverter.
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
The temperature on the external heat sink may be high in normal operation and cause skin burn injury when touched. Pay attention to high
temperature components.
Prevent the risk of fire hazard, do not cover or obstruct the heat sink.
Allow modification in your electrical system to be carried out only by the training-qualified electricians.
Repair and Maintenance
The SE inverter contains no user serviceable parts. Only personnel trained and authorized by SILIKEN ELECTRONICS are allowed to carry
out internal repair and maintenance of the unit. Please return the device for overhaul if some fault is caused.
WARNING!
Not to make alterations or use tampering assembly in the inverter without manufacturers authorization unless specified elsewhere
in this Manual. They may result in injury, electric shock, or fire and void the warranty.
Wiring the inverter
Input/Output Terminals: Use wire size #10 AWG to #6 AWG, 90°C (194°F) Copper Wire.
Reconfirm all connections and screws have been made correctly and tightened properly.
WARNING!
All electrical installation and the wiring methods shall be done according to the relevant electrical installations stipulated by local
distribution network operator (DNO) and should follow the important safety instructions in this manual.
Connection of the AC ca le
WARNING!
Reconfirm the circuit breaker connected to the main utility is switched OFF before connecting the power cable from the breaker
to the AC connector.
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
Connection of the DC ca le
CAUTION!
Identify the different polarity of DC voltage on each PV string and connect respectively to the input terminals. Make sure the DC
voltage that PV arrays generate is equal to or less than 500 VDC in any case.
WARNING!
Route the DC connection cables to the SE inverters away from any possible hazards that could damage the cables.
WARNING!
Hazardous voltage is still present on the device after disconnection of all PV DC inputs. Allow five (5) minutes for the inverter to
discharge the energy stored in capacitors completely.
WARNING!
PV arrays will be energized when exposed to light. Cover the arrays with opaque (dark) materials during installation and wiring.
!
Introduction
1.1 General
1.2 Specifications
1.3 Accessories
Installation
2.1 Placement
2.2 Mounting
2.3 Wiring the Inverter
2.3.1 Connection of the AC cable
2.3.2 Connection of the DC cable
2.3.3 Connection of the communication cable
2.4 Wiring Inverter in Parallel
Operation
3.1 Overview
3.2 Operation Feature
3.3 LED Indication
3.4 LCD Display
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users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
Table of Contents
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
3.6 Communication
3.7 Explanations of Error Messages
Warranty Information
Technical Documentation
5.1 Outline Drawing
5.2 Technical Specifications
5.3 Efficiency
5.4 De-Rating Operation
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Introduction
8
1.1 General
The SE Inverters product family is a series of grid-connected photovoltaic inverters with FLEX-MPPTs that is a method for flexible MPPTs
management. SE inverters utilize the FLEX-MPPTs technology to efficiently absorb more energy from the PV panels. The SE Inverter is
designed to convert DC power produced by photovoltaic arrays to AC voltage that is then fed into the 230V/50Hz or 230V/60Hz mains utility.
The SE family currently contains three (3) members which are SE4.6NI, SE3. NI and SE3.3NI. The overview of the grid-tied solar energy
system with a three (3) panel strings inverter is shown in Figure 1.1.1. SE inverters comply with all VDEW (Association of German Electricity
Producers) regulations for supplementary grid feeding to low voltage electricity grid of the utility. Additionally, SE inverters are also certified to
comply with the latest regulations of the DIN VDE 0126-1-1 and the according harmonized standards and the low voltage regulations described
in the CE declaration.
The SE inverter is designed to support up to three (3) PV strings and operate automatically without any configuration once it is installed and
commissioned according to the technical specifications. When at least one of the DC input voltages generated by the photovoltaic module
goes above the minimum MPP voltage setting and under the pre-set threshold value, the embedded controller is then waked up and goes
through the system check mode and then stay at monitoring mode because the pre-set threshold value is not reached yet. At this time, the
SE inverter would not feed the AC power to the mains utility; instead, it keeps watching the input DC voltage. Once the input DC voltage goes
up above the pre-set threshold value and all other conditions necessary for grid connection are checked and fulfilled for a certain period of
time, the SE inverter goes into the grid feeding mode that turns the AC relays on and begins feeding the AC voltage into the grid steadily. When
all of the input DC voltages fall below the minimum MPP voltage setting which is 100Vdc, the SE inverter will then shut itself down. The SE
inverter will be waked up automatically when one or more of the input DC voltages go up above the minimum MPP voltage setting.
It is very much appreciated that you choose Siliken SE inverters as your power conversion devices in the solar power system. This document
contains the information you need for the installation and settings of the SE inverters. Therefore, it is strongly recommended to read this manual
carefully before the SE inverter installations and settings.
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
Introduction
9
users manual inverter SE3.3Ni - SE3. Ni - SE4.6Ni
Fig. 1.1.1 Grid Connected Solar System Overview
1.2 Specifications
100-450 V
DC
500 V
DC
Maximum DC power
MPP Voltage range
Maximum voltage range
Maximum current
Number of MPPTs
Maximum number of Strings
DC Input
4,5 kWp 5 kWp
20 A (2x10A)
SE3.3Ni SE3. Ni SE4.6Ni
6 kWp
20 A (2x10A) 30 A (3x10A)
1-2 1-2 1-3
22 3
AC Output
Nominal power
Maximum power
Maximum effective current
Nominal voltage
Nominal frequency
Harmonic distortion (THD)
Power factor
Galvanic insulation
Number of phases
3,3 kW
3, kW
16,52 A
3, kW
4,4 kW
19,13 A
230 VAC
50 Hz
<3%
>0,99
Assured by RCMU*
Single phase
4,6 kW
5,1 kW
22 A
SE3.3Ni SE3. Ni SE4.6Ni
General characteristics
IP 65
<1 W
Forced ventilation
LED / LCD
RS232C / RS4 5
5 0 x 422 x 1 2 mm.
-20ºC to +55ºC (without derating)
Maximum 95%
MC4
RST25i3
22,5 Kg. 23 Kg.
Yield maximum
Yield UE
Level of protection
Own consumption (stand by)
Cooling system
Display
Comunications
Dimensions
Weight
Operating temperature
Ambient humidity
Type of DC connection
Type of AC connection
SE3.3Ni SE3. Ni SE4.6Ni
22,5 Kg.
96,3%
95,1% 95,1% 95,4%
96,3% 96,2%
Utility Grid
Load
SE Inverter
String A
String B
String C
Fuse box
º¾
Ä
Ê
This manual suits for next models
2
Table of contents
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