REFU SolaR ElEctRonIcS
REFU SolaR ElEctRonIcS
REFU Solar Electronics, Inc., the U.S. sub-sidiary of REFUSOL Gmbh, provides sales, customer support, service, application engi-neering and logistics for innovative 3-phase grid-tied PV inverters for commercial and utility scale applications.
REFU Solar Electronics wide product port-folio ranges from 12 kW up to 1.3 mW PV inverters, which can be aggregated for multi-megawatt projects.
By setting new performance standards with the most efficient and reliable solar PV in-verters in the market, REFU Solar Electronics has enjoyed faster growth than the overall solar industry. the company is committed to
supporting the economic success of distribu-tors, installers, utilities, and developers by ensuring that its products are highly efficient, of utmost reliability, and easy to install and maintain.
With our U.S. sales, production, field service and other related functions, REFU Solar Electronics can quickly respond to customer demands for innovative photovoltaic product and design solutions with the support of our experienced engineering resources.
REFUSOL GmBh
REFUSOL GmBh
headquartered in metzingen (near Stuttg-art), Germany, REFUSOL Gmbh is a global developer and manufacturer of highly effi-cient solar inverters and monitoring systems for residential, commercial and utility scale photovoltaic applications . Founded in 1965, REFUSOL’s sophisticated inverter design and reliability benefits from more than four de-cades of energy conversion experience for drive system applications.
REFUSOL has sales and service subsidiaries in Europe, asia and the U.S., and offers one of the most established solar power inverter brands to the market. REFUSOL is a reco-gnized leader in solar inverter design and technology.
REFUSOL InVERtER SERIES
REFUSOL 012-024K-Ul
For residential and commercial systems from 12 kW up to multi-megawatt. See pages 7 & 11 for technical data.
REFUSOL 500K/630K
For commercial and utility-scale systems from 500 kW up to multi-megawatt. See pages 8 & 12 for technical data.
REFUSPB 1.0m/1.3m
For commercial and utility-scale systems from 1 mW upwards. See pages 8 & 13 for technical data.
toP EFFIcIEncy maxImIzES REVEnUE Eliminating energy loss and maximizing performance were REFU Solar Electronics primary goals when designing the REFUSOL inverter series. With our highly innovative circuit topology, the REFUSOL series delivers impressive efficiency over a wide input vol-tage range achieving over 98% maximum efficiency and more than 97% European efficiency. combine this efficiency with our innovative mPP tracking, optimal PV power harvest, and outstanding part-load effici-ency and you will achieve remarkably high yields on each PV installation.
FaSt and PREcISE mPP-tRacKInG In order to achieve the highest possible po-wer yields, an excellent mPP tracking is of crucial importance. For the REFUSOL series we developed an extremely fast working and precise mPP tracking algorithm reaching a top tracking efficiency of 99.9%.
our new “active Shadow Sweep” function detects partial shadow conditions more pre-cisely and our controller adapts accordingly.
BESt In claSS EFFIcIEncy
these features have been tested and con-firmed by several independent institutes including Photon magazine, which gave the REFUSOL an ”a +“ performance rating. hIGhESt EFFIcIEncy InVERtERS
We have developed a highly efficient circuit topology which provides very high efficiency over a wide input voltage range. the highest efficiency zone is exactly at the main opera-ting point of the solar generator, so that peak yields are always guaranteed.
at low irradiation REFUSOL inverters achie-ve a achie-very high partial load efficiency grade. Even at 2.5% of nominal performance, more than 90% of the solar current is fed into the grid!
REFUSOL 012K, 016K, 020K and 024K-Ul REFUSOL´s commercial scale inverters offe-ring includes Ul-listed inverters with 12 to 24 kW power classifications. these innovative 3-phase, transformerless inverters feature a bi-polar design to maximize efficiency. low power losses across the complete input voltage range allow for convection cooling, which enhances the inverter’s compact de-sign.
this low power loss reduces heat dissipation, which prevents overheating in indoor instal-lations. Furthermore, should indoor or out-door temperatures exceed ambient tempera-ture ranges, the REFUSOL will automatically reduce output to avoid overheating.
aPPlIcatIon aREaS: thIn FIlm to oUtdooR USE
due to the negligible voltage fluctuations to ground, REFUSOL´s family of transformerless inverters can easily be connected to numerous thin-film module strings.
all of our 012K to 024K solar inverters are equipped with IP65 protection, including IP67 plug connectors routed to all connec-tions. this offers ideal applications for out-door use, such as rooftop, ground mount and non-central solar power installations.
UtIlIty ScalE InVERtERS
REFUSOL 500K and 630K
In higher power classes we offer our REFUSOL 500K and 630K utility scale inverters. these inverters incorporate several years of design and engineering experience from other
REFU-SOL product lines such as switch control
cabi-nets and traction drives. In these power classes a top efficiency of up to 98% and a European efficiency of 97% (without transformer) can be reached. REFUSOL utility scale inverters are equipped with differentiated cooling (control-led cooling through external water/air heat exchangers). We also use our same innovative mPPt technology for our larger power class inverters.
REFUSPB
For our solar utility scale customers, we also offer our REFUSOLPowerBox – REFUSPB – with power ranges from 500 kW to 1.3 mW. REFUSOL 500K and 630K inverters within the REFUSPB are equipped with two alternative cooling systems: a standard cooling system or a hermetically sealed system. thanks to the high degree of protection that our cooling options provide in extreme temperatures, the REFUSOL utility scale inverters and the RE-FUSPB are especially suitable for use in large PV systems in any environment with deman-ding climate conditions.
UnlImItEd commUnIcatIon
REFULOG, REFU Solar Electronics own moni-toring and analysis internet-portal, delivers PV system operators extensive evaluation and display features. We also offer integrated automatic capacity control status monitoring and error reporting with data recorded over extended time periods.
Each REFUSOL inverter allows for a direct connection to your local network and the in-ternet. the installation is plug & play and let you evaluate data from an unlimited number of REFUSOL inverters.
our monitoring and analysis system is also compatible with any number of third-party providers and can easily be integrated into your existing system for monitoring and yield analysis.
SUnSPEc allIancE
REFU Solar Electronic is a member of the Sunspec alliance, which is comprised of so-lar power components companies, service providers, regulatory agencies and consu-mers. SunSpec’s mission is to accelerate solar energy growth by driving data and communications interoperability standards. as a Sunspec alliance member, REFUSOL inverters can connect with well known third party monitoring systems providing greater PV system data monitoring flexibility. REFULOG
We know that yield and performance system monitoring with real time data is of utmost importance to PV system operators.
the integrated data logger in every REFUSOL inverter records and tracks all of the necessary operating parameters to ensure proper data analysis.
InStallatIonS and REFEREncES
InStallatIonS
Since introducing the REFUSOL series, we have completed more than 1 GW of installations globally in diverse climates and geographic environments, which underscores REFUSOL’s proven technology, superior design and dura-bility and high customer satisfaction.
From smaller (12 to 24 kW) to larger power classes, our inverters work in a broad range of applications in many diverse settings.
REFEREncES
the spectrum of installations ranges from resi-dential and commercial rooftop systems to lar-ge utility-scale solar parks. our products are being used worldwide and can be deployed under the most diverse climatic and geogra-phic conditions.
We would be happy to meet with you to discuss which REFUSOL solution best suits your solar application.
tEchnIcal data
REFUSOL 012K-Ul REFUSOL 016K-Ul REFUSOL 020K-Ul REFUSOL 024K-Ul
dc data
maximum PV power 13.6 kW 17.4 kW 21 kW 25.5 kW
mPPt-range 2 x 185 ... 450 V 2 x 215 ... 450 V 2 x 240 ... 450 V 2 x 263 ... 450 V
maximum dc voltage 2 x 500 V
maximum dc current 34.2 a 37.5 a 41.7 a 45 a
mPP tracking one fast, precise mPP tracker with active Shadow Sweep
number of dc-connections 2 x 6 2 x 6
dc fuses 12 x type KlKd 15 a
Internal overvoltage protection Surge protected device (SPd) type 2
ac data Rated ac-power 12.4 kW 15.8 kW 19.6 kW 23.2 kW maximum ac-power 12.4 kW 15.8 kW 19.6 kW 23.2 kW ac grid connection 3 ac 480 V+n ± 10%, 60 hz cos phi 1 maximum ac current 16.5 a 21 a 26 a 29 a
circuit breaker: mcB (characteristic: B) 20 a 32 a
distortion factor thd < 3%
maximum efficiency 98.2% 98.2% 98.2% 98.2%
European efficiency 97.8% 97.8% 97.8% 97.8%
Infeed starting at 20 W
Internal consumption for night operation < 0.5 W
Internal overvoltage protection SPd type 2
cooling, ambient conditions, Emc
cooling natural convection
ambient temperature -4 ... +131°F (-25 ... +55°c)
Elevation Up to 3,300 ft (1,000 m) above sea level
Emitted interference Fcc part 15 subpart B, class B
certification cE (Ul and cSa Q1 2011)
Interference immunity IEEE c37.90.2
Environmental classif. 4K4h acc. to dIn IEc 721-3-3 ; Stationary use in weather protected area
SzS or grid protection acc. to VdE 0126-1-1: 2006-2
mechanical
tEchnIcal data
REFUSOL 500K REFUSOL 630K dc data maximum PV power 575 kW 725 kW mPPt range 460 ... 850 V 460 ... 850 V maximum dc voltage 950 V 950 V maximum dc current 1,000 a 1,300 amPP tracking one fast, precise mPP tracker
number of dc connections 12 16
overvoltage protection option: type 2 type 2
ac data
Rated ac power 500 kW 630 kW
maximum ac power 500 kW 630 kW
ac grid connection 3ac 315V, 50 - 60 hz use external transformer
cos phi 1 (± 0.9 on demand)
maximum ac current 920 a 1,220 a
distortion factor thd ≤ 3%
maximum efficiency 98.1% without transformer
European efficiency 97.6% without transformer
Infeed starting at 5,000 W 5,000 W
Internal consumption in night operation 50-600 W 50-600 W
overvoltage protection type 1 + 2
cooling, ambient conditions, Emc
cooling Standard cooling or hermetic closed system with liquid cooling hermetic closed system with liquid cooling
ambient temperature 14 ... 122°F (-10 ...+50°c) 1) 14 ... 113°F (-10 ...+45°c) 1)
Elevation Up to 3,300 ft (1,000 m) above sea level, with power derating up to 6,600 ft (2,000m)
Emitted interference En 61000-6-4: 2007
certification cE (Ul and cSa in preparation)
Interference immunity En 61000-6-2: 2005
Environmental classif. 3K3 acc. to dIn IEc 721-3-3
anti-islanding protection Prevents back-feeding inverter-generated power to the grid in the event of breakdown
Voltage monitoring VdEW requirements in accordance with directive
mechanics
type of protection IP43 or IP54 (option) as per En 60529 IP54 as per En 60529
dimensions Width / height / depth
110 / 79 / 24 inches additional cooling unit:
24 / 79+8 2) / 31+6 inches 3)
110 / 86 / 24 inches additional cooling unit:
tEchnIcal data
REFUSPB 500K REFUSPB 630K REFUSPB 1.0m REFUSPB 1.3m
dc data
maximum PV power 575 kW 725 kW 2 x 575 kW 2 x 725 kW
mPPt-range 460 ... 850 V
maximum dc voltage 950 V
maximum dc current 1,000 a 1,300 a 2 x 1,000 a 2 x 1,300 a
disconnection system dc dc-contactor
ac data
Rated ac power 500 kW 630 kW 2 x 500 kW 2 x 630 kW
maximum ac power 500 kW 630 kW 2 x 500 kW 2 x 630 kW
ac grid connection 3 ac 315 V, 50 - 60 hz, use external transformer
maximum ac current 920 a 1,220 a 2 x 920 a 2 x 1,220 a
Box dimensions
Width / height / depth 119 x 140 x 213 inches (3,020 mm / 3,560 mm / 5,400 mm)
options: cooling – technical data
REFUSOL 500K, REFUSPB 500K, REFUSPB 1.3m
model Standard option hermetic closed system
type of cooling Power stage: liquid cooled with internal water/air heat
exchanger, Electronic: aircooling Power stage and electronic: liquid cooled with internal water/air respectively air/water heat exchanger
ambient temperature +14 ... +122°F (-10 ... +50°c), P-derating
from 113°F (45°c) +14 ... 122°F (-10 ... +50°c), up to 122°F (50°c) full range of rated Power
Elevation Up to 3,300 ft (1,000 m) above sea level, with power derating up to 6,600 ft (2,000 m)
dimensions water/air heat exchanger
Width / height / depth 24 x 87 x 38 inches (600 mm x 2,200 mm x 960 mm)
Weight 880 Ibs (400 kg) 992 Ibs (450 kg)
REFUSOL 630K, REFUSPB 630K, REFUSPB 1.3m
ambient temperature -10 ... + 45°c
dimensions water/air heat exchanger
Width / height / depth 28 x 87 x 38 inches (700 mm x 2,200 mm x 960 mm)
tEchnIcal data
REFULOG BASIC
Performance spectrum
configuration of plants and sub-plants Easy to integrate inverters using a unique activation code, location information, plant specific data, pictures
display of current parameter values per plant
and per inverter total yields, daily yield (absolute and normalized), ac/dc power rating (absolute and normalized), ac/dc voltage, ac frequency, device temperature, radiation values, module temperature
display of plants and inverters In clearly laid out lists for easier comparisons
Error management overview of all error messages of all inverters
Graphical analysis of historical data day, month, year- and total view, display of every plant- and inverter-parameter, combination of various channels in a diagram through a free configurable statistic view
administration User administration supported
overview of the plant locations Via interactive map
Foreign languages multilingual application with accordingly localized displayal of number formats, date and other data.
technical data
maximum number of inverters no limitation
Protocol IP
display of inverter data in the online portal yes
REFUSOL 012K - 024K firmware package 22-xx
Further advantages
access direct connection to the local network/internet. Usually no additional hardware necessary.
datalogger no additional data logger necessary
Installation Plug & Play installation through the use of standard ethernet network
Evaluation possibilities complex evaluation possibilities for intelligent equipment monitoring
Examples for the connection of REFUSOL inverters with the monitoring System REFULOG
