138QUI universal USM INVERTER

Life Suppliers commonly refer to their inverters as being the ‘brain’ of a solar PV system, this may seem like a tag line attempting to sell their products but it is fair to say that any inverter would be the most important component in a grid tied PV system. Commonly the focus is put upon modules when in fact more attention should be paid to the inverter technology employed.

The inverter is responsible for converting the electricity generated by the PV array (DC) to electricity that is usable within the buildings served and by the National Grid. Further to this the unit also monitors the status of the National Grid and controls the PV system in reference to this, shutting down the power output from the PV when required for safety reasons.

The inverter is also required to do this while being as efficient as possible. In a recent “Photon” magazine test of 94 inverters from the top manufacturers the SMA sunny Tripower 20000TLHE-10 topped the chart being the only one to gain an A+ rating.

As well as the commonly string inverter approach (a single inverter for each array), we promote another inverter formation type. The module or micro-inverter uses a single inverter for each module. This allows the modules to act independently from one another meaning a drop in output (through shading or otherwise) from one module will not affect the output of the others. We tend to specify for these inverters where there is more than one source of shading acting on a PV array, maximising output.

We also offer the Nedap Power Router as an option this is an intelligent system which employs a battery store. In essence it measures the output of the PV array and the consumption of the building that it serves and if the PV output exceeds the consumption then the excess is stored within the battery stack for use at a later time. This maximises the financial benefit of the UK Feed-in tariff scheme by ensuring as much energy as possible is used on-site.

Product Description; 138QUI universal USM INVERTER

1000VA/48VDC
Combines the functions of and inverter, MPPT solar charger, AC battery charger and UPS
Pure Sine Wave Inverter
Selectable Input Voltage
Cold Start Function
Short Circuit Protection
Input Voltage Selection
Selectable Charger Current
Configurable AC/Solar Charge Priority
Mains or Generator Power
Overload/Over Temp Protection
Smart Charge for Optimised Performance

INPUT
Rated Power: 5000VA/5000W
Voltage: 230 VAC
Selectable Voltage Range:170-280 VAC(for personal Computers), 90-280VAC (for home appliances)
Frequency Range: 50Hz/60Hz (Auto sensing)

OUTPUT
AC Voltage Regulation(Batt. mode) : 230VAC ± 5%
Surge power: 10000VA
Efficiency (peak): 93%
Transfer Time: 10ms( for personal computers) 20ms ( for home appliances)
Waveform: Pure sine wave

BATTERY & AC CHARGE
Battery Voltage: 48 VDC
Floating Charge Volatage: 54 VDC
Overcharge Protection: 60 VDC
Maximum Charge: 20A/30A/40A/50A/60A

SOLAR CHARGER
Maximum PV Array Power: 3000w
MPPT Range @ Operating Voltage: 60VDC-115VDC
Maximum Charging Current: 60A / 80A
Maximum Efficiency: 98%
Stanby Power Consumption: 2W

PHYSICAL
Dimension, D x W x H (mm) : 140 x 295 x 540
Net weight: 13.5

OPERATING ENVIRONMENT
Humidity: 5% to 95% Relative Humidity (Non- condensing)
Operating temperature: o° C – 55° C
Storage Temperature: -15° C – 60° C