SolarMax MT A series A reliable solution for commercial PV applications

SolarMax MT A series A reliable solution for commercial PV applications

yields for commercial plants For more than 20 years, SolarMax has been a pioneer in the development of transformerless inverters and our portfolio covers the complete range of grid connected PV applications. In fact, we have installed more than 3.5GW of inverters in major European PV markets and we are now bringing this expertise to the United States. The new SolarMax MT A series has been developed by a corporate team of engineers working in the U.S. and Switzerland. Unlike other PV inverters, our efficient, flexible and reliable inverters for low and medium-voltage grid connections are designed to withstand challenging environmental conditions. Our customers will greatly benefit from the MT A series since it was engineered for maximum energy yields and overall system cost optimization, resulting in the optimal return on the PV investment. «In addition to building high-quality products, SolarMax offers great customer service. Our customers have high expectations when they decide to go PV, and they want to be sure everything will work reliably over an extended period of time. With SolarMax as a partner, we can achieve peace of mind.»

Unleashing new potential The SolarMax MT A series maximize yields of any commercial PV plant when it is connected to the low or medium-voltage grid. input voltages of up to 1000V enable longer PV strings, reducing cable losses and expenses while achieving greater energy harvests. In addition, the high power density of the inverters helps to reduce installation time and cost. Rugged and safe The robust NEMA 4X aluminum housing can withstand extremely challenging weather conditions. The MT A inverters feature DC terminal blocks with pluggable connectors and two conduit connector options for safe and easy installation. Our Multi- MPPT concept also means string fuses are not required to protect DC lines. Ethernet / RS485

Economical and flexible The Multi-MPPT concept of the SolarMax MT A series reduces the distance between the module rows thereby increasing the ground-coverage ratio. As a result, decentralized PV power plants can be implemented at lower cost. The yield optimization of very small PV power units is an additional advantage. This way, different irradiation conditions or asymmetrical divisions of the PV strings are compensated for, and module fields can be adjusted individually to their maximum operation point. Efficiency curve SolarMax 18MT3 A efficiency η [%] 100 98 96 94 92 UDC = 400 V ηcec(400 VDC) = 96.8 % 90 UDC = 720 V ηcec(720 VDC) = 97.0 % 88 UDC = 850 V ηcec(850 VDC) = 97.0 % 86 84 82 80 0 10 20 30 40 50 60 70 80 90 100 output power [%] www Professional plant monitoring Plant monitoring is performed using the MaxWeb Portal via the Internet. The MaxWeb data logger records current readings, yields, data and events. The data logger then transmits this information to the MaxWeb Portal. The portal is compatible with commonly used operating systems and Internet browsers, and the plant data can be retrieved via any Internet connection. Comprehensive configuration The MaxTalk communication and service software is the professional tool for parameterizing commercial PV plants. Specifications of grid operators or state-specific standards can be set individually with an intuitive user interface allowing for targeted navigation. Another option is using a plant wizard to guide you through the program. Ethernet is used for notebook connectivity.

yield Plant operators and investors benefit from low total system costs and high efficiencies. communication The integrated RS485 and Ethernet interfaces can be used to design communication networks easily and quickly. flexibility Three MPP trackers and a broad input voltage range provide the highest level of flexibility, even in the event of asymmetrical divisions of the solar generator or different module types. warranty coverage With warranty extensions of up to 25 years, plant operators and investors minimize their financial risk in the long run. comfort Light-weight construction and easily accessible connections allow for quick and convenient oneman installation. Swiss Quality Development, final assembly, as well as comprehensive testing of our products take place in accordance with Switzerland s highest quality standards.

Specifications SolarMax 12MT2 A SolarMax 15MT3 A SolarMax 18MT3 A Input values MPP voltage range 1) 340 850 V 325 500 V 400 850 V Minimum DC start-up voltage 250 V 250 V 250 V DC voltage 1000 V 600 V 1000 V DC current MPPT1: 18 A / MPPT2: 18 A MPPT1: 18 A / MPPT2: 18 A / MPPT3: 10 A MPPT1: 18 A / MPPT2: 18 A / MPPT3: 10 A Number of independent MPPT 2 3 3 Number of string connections MPPT1: 2 / MPPT2: 2 MPPT1: 2 / MPPT2: 2 / MPPT3: 1 MPPT1: 2 / MPPT2: 2 / MPPT3: 1 Connector type spring terminal block with pluggable connectors (8 10 AWG) Output values Rated output power 12,000 W 15,000 W 18,000 W apparent power 12,000 VA 15,000 VA 18,000 VA AC current 3 x 15 A 3 x 18.5 A 3 x 22 A Rated grid voltage 277 V / 480 V Rated grid frequency / range 60 Hz / 56...64 Hz Power factor (cos ϕ) > 0.98 (adjustable +/- 0.8) THD at rated power < 3 % Connector type spring terminal block with pluggable connectors (8 10 AWG) Grid connection 3 PH / N / G Power consumption at night 0 W Efficiency efficiency 98.0 % 97.6 % 98.0 % CEC efficiency 97.5 % 97.0 % 97.0 % Environmental Ambient temperature range conditions (for rated power) -13 F...+ 140 F (+ 113 F) / -25 C + 60 C (+ 45 C) Relative humidity 0 98% (no condensation) Noise emission level 51 dba (fan off) / 58 dba (fan on) Mechanical Housing material Aluminum specification Enclosure rating NEMA 4X / IP66 (electronics and connections) Conduit connections plain metal plate predrilled metal plate with 1 for DC inputs and 0.5 for AC output Mounting system lockable wall bracket (11.3 x 7.0 ) Mounting angle range 20 90 Cooling active Configuration Display graphic LC display Inverter topology transformerless DC switch integrated Integrated data logging energy yield, peak power and operating hours of the last 31 days, 12 months, 10 years Extended data logging via MaxWeb or selected third party Fault current detection internal, AC/ DC sensitive Surge protectors DC and AC Type 2 (UL 1449) Standards & EMC FCC Part 15 Subpart B, Class A compliances Anti-islanding IEEE 1547 Device safety UL 1741, CSA C22.2 No. 107.1 Ground fault detection NEC 690.5 Safety approval Intertek Interfaces Data communications RS485 / Ethernet Status signaling contact clamp terminal, relay configurable as NO or NC Weight & dimensions Weight 97 lbs 110 lbs 110 lbs Dimensions (W x H x D) 21.5 x 37.0 x 7.9 Warranty Standard warranty 10 years Extended warranty up to 15, 20 or 25 years 1) for rated output power All rights, amendments and errors reserved. 2013/07 en-us