Delta launches compact M70A solar PV string inverter

They also boost output from arrays that experience partial shade. Compact dimensions (high power density of 750kW/m3 at 400V) make the M70A easy to transport and install. This new Delta inverter is targeted at commercial rooftop installations ranging from 70kW to as much as several MWs.

The M70A provides flexibility for both system engineering and building design. The 6 MPP trackers offer 3 pairs of connectors each to provide more options when arranging module strings. This way, planners can compensate for shading and complex roof geometries by allocating the MPP trackers accordingly. If two strings are attached per DC input, neither external string breakers nor fuses are required. The M70A is also merely one product within the comprehensive Delta portfolio of technologies for green buildings, opening the door to even more possibilities including completely self-sufficient buildings.

"When companies or developers decide to construct a new building now, they frequently pursue some form of environmental certification," said Eric Thorsrud, Marketing Manager PV Inverters BU, Delta EMEA. "The M70A is a great option for smart green buildings designed to achieve net-zero certification, for instance."

The M70HV at a glance:

• 6 MPP trackers
• 77 kVA maximum apparent power
• 98.8% peak efficiency
• Aluminum housing with IP65 protection for indoor or outdoor installation
• iOS and Android App simplifies setup and operation
• Individual string monitoring
• Input voltage from 200 to 1000V
• integrated Type 2 AC and DC surge protection devices, optional Type 1 + 2 AC & DC SPDs
• No electrolytic capacitors for service life of 20 years or more

Additional advances include an I-V curve feature for PV curve recording, Q at Night to supply reactive power to the grid outside standard feed-in periods, and Anti-PID (potential-induced degradation) to protect solar modules from the effects of voltage, heat and humidity.

The M70A also ships with an RS485 interface and wireless communications. This connectivity allows operators to monitor their M70As from the MyDeltaSolar Cloud with a smartphone app. MyDeltaSolar Cloud is free of charge for the first 5 years.

The M70A mounts upright on a roof or base on the ground. It can also mount to a wall with the included mounting brackets.