2 Introduction; Valid Model - Delta M70A-262 Operation And Installation Manual

Introduction
2 Introduction
M70A_262 transformerless 3Ø PV inverters are designed to enable the highest
levels of efficiency and provide longest operating life by use of state-of-the-art
high frequency and low EMI switchmode technology. It is suitable for outdoor use.
- This product utilizes a transformerless design, and is not provisioned with an
isolation transformer, and therefore has no galvanic isolation between the DC
and AC sides.
PV array circuits connected must be floating with respect to ground, i.e., must
not be referenced (bonded) to ground.
If grounded PV arrays are connected to the inverter, the inverter will not connect
to the grid and the error message INSULATION (E34) will appear.
- It is prohibited to connect terminals L1, L2, L3 or N to ground.

2.1 Valid Model

The user manual is valid for the following device types:
• M70A_262
This user manual must be followed during installation, operation, and maintenance.
DELTA reserves the right to make modifications to the content and technical
data in this user manual without prior notice.
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