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Introduction
1.1 System Introduction
URE MA1-INV can be applied in DC-coupled systems (mostly new installation), AC-
coupled systems (mostly retrofit) and Hybrid-coupled systems (mostly retrofit, and PV
capacity-increase), as the following scheme:
Figure 1 DC- and AC-/ Hybrid-coupled Storage System - Scheme
CAUTION:
For the AC-/ Hybrid-coupled system, unlike DC, two power meters are to be
mounted.
MA1-INV is only to be connected with MA1-BAT, a LFP battery. No other battery
can be connected to MA1-INV.
1.2 General Precautions
DANGER
Danger to life due to high voltages of the PV array, battery and electric shock.
When exposed to sunlight, the PV array generates dangerous DC voltage which
will be present in the DC conductors and the live components of the inverter.
Touching the DC conductors or the live components can lead to lethal electric
shocks. If you disconnect the DC connectors from the system under load, an
electric arc may occur leading to electric shock and burns.
➢ Do not touch uninsulated cable ends.
➢ Do not touch the DC conductors.
➢ Do not open the inverter and battery.
➢ Do not wipe the system with damp cloth.
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United Renewable Energy Co., Ltd.
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