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Battery maintenance operators shall have the knowledge and technical skill for battery maintenance;
All batteries connected in parallel should be of the same model and have same firmware version. This is a design
issue needs to be considered by designer/installer, particularly when replacing batteries or modifying an existing
energy storage system.
HYD-ES inverter is transformer-less, therefore the positive pole and negative pole of the PV array are NOT
grounded. Otherwise it will cause inverter failure. In the PV system, all non-current carrying metal parts (such as:
PV module frame, PV rack, combiner box enclosure, inverter enclosure) should be connected to earth.
Warning: Do not disassemble or break the battery. Its electrolyte can be toxic and damage your skin and eyes.
Warning: follow the following rules during battery installation/maintenance.
a) Take off your watch, ring, and other metal objects.
b) Only use tools with insulated handles.
c) Wear rubber gloves and shoes.
d) Do not put tools or metals above the battery.
e) Switch off HYD-ES inverter & batteries before connecting / disconnecting battery terminals.
f) Battery positive/negative poles should be isolated from ground.
2.3. Signs on the inverter
There are some symbols which are related to security on the inverter. Please read and understand the content of the
symbols before system installation.
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