Products - Solar inverters - Delta EMEA

M50A / M70A / M100A Flex

Three-phase string inverters without transformer for large commercial roof systems.

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Product Introduction

Features & Benefits

Area of application

Compact, efficient inverters with rugged IP66 housing for large roof-mounted and ground-mounted installations in demanding environments. Can be installed in a suspended or standing position.

AC connection

The inverters are certified according to VDE-AR-N 4105, 4110 and 4120 and are suitable for all types of grid. The grid connection is via screw terminals. Type 2 interchangeable AC surge protection devices are integrated at the factory. Type 1+2 combined AC surge protection devices are optionally available for the M50A and M70A.

DC-side components

The inverters have two mechanical DC disconnectors, Amphenol H4 DC connectors and Type 2 DC surge protection devices. Optionally, Type 1+2 combined DC protection devices are available. The M50A Flex 6 MPP trackers for 2 module strings each, the M70A Flex 6 MPP trackers for 3 module strings each and the M100A Flex 8 MPP trackers for 2 module strings each.

Safety features

In addition to the integrated Type 2 AC and DC surge protection devices, the inverters also offer safety functions such as arc detection and reverse polarity protection. All internal components are easily accessible through the large front door.

Built-in Bluetooth interface

Quick installation and commissioning with a smartphone and the DeltaSolar app. This also allows local monitoring of the inverter. Remote monitoring is performed via the MyDeltaSolar Cloud or a third-party monitoring system (via RS485 connection).

Applications
Technical data

A complete overview of the technical data can be found in the data sheet.
 

Input (DC) M50A Flex M70A Flex M100A Flex
Maximum input power (per MPP tracker/total) 58.0 kW 78.5 kW 110.0 kW
Operating voltage range 200 to 1000 VDC
MPP voltage range with maximum power 390 to 900 VDC 460 to 900 VDC 520 to 800 VDC
Maximum current (per MPP tracker/total) 26 A/132 A 26 A/156 A 30 A/240 A
Maximum number of MPP trackers 6 x 2 module strings 6 x 3 module strings 8 x 2 module strings
  DC connector panel M50A DC connector panel M70A DC connector panel M100A
Output (AC) M50A Flex M70A Flex M100A Flex
Number of phases 3
Maximum apparent power 55 kVA 77 kVA 110 kVA
Maximum active power 55 kW 77 kW 110 kW
Rated apparent power 50 kVA 70 kVA 100 kVA
Voltage range 230/400 VAC -20%/+30%; 3 phases + PE (Δ) or 3 phases + N + PE (Y) 230/400/480 VAC -20%/+30%; 3 phases + PE (Δ) or 3 phases + N + PE (Y)
Power factor adjustment range 0.8 cap to 0.8 ind
AC surge protection devices Type 2 (EN 61463-11), replaceable; for M50A and M70A optional combined Type 1+2 AC surge protection devices
General specifications M50A Flex M70A Flex M100A Flex
Delta model name M50A_260 M70A_260 M100A_280
Peak efficiency 98.7% 98.8% 98.7%
Operating temperature range -25 to +60°C
Topology Without transformer
Mechanical details M50A Flex M70A Flex M100A Flex
Dimensions (H x W x D) 699 × 629 × 264 mm
Weight 64 kg 69 kg 77 kg
Cooling Natural convection, without fans
Connection type AC side Screw terminals
Connection type DC side 12 pairs of Amphenol H4 connectors 18 pairs of Amphenol H4 connectors 16 pairs of Amphenol H4 connectors
Communication M50A Flex M70A Flex M100A Flex
Communication interfaces Bluetooth, 2 x RS485, 1 x dry contact, 1 x external power-off, 6 x digital inputs
Safety and standards M50A Flex M70A Flex M100A Flex
Degree of protection IP66
Safety class I
Islanding protection/grid regulation VFR 2019 (Enedis-PRO-RES_10E, Enedis-PRO-RES_64E), VDE-AR-N 4105 / 4110 / 4120, EN 50549-1



 
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