Subject to change | © 2020 SOLARWATT GmbH | AZ-TM-PME-1787 | Rev 000 | Version: 03/2020
Page 33
Firefighting measures
In the event that the battery is exposed to excessive heat
such as an external fire, observe the following:
The battery’s primary products of combustion are carbon
dioxide (CO
2
) and water vapor (H
2
O). Significantly smaller
quantities of carbon dioxide (CO), hydrofluoric acid (HF)
and other gaseous intermediate products are released as
well. Dusts of nickel oxide, cobalt oxide, manganese oxide
(with NMC cells) must also be taken into account.
Unsuitable extinguishing agent: Water jets, Type D extin
-
guishers
Suitable extinguishing agents: Sand, dry extinguishing
powder, carbon dioxide, Type PM12i metal fire extinguish
-
ers.
If the battery is exposed to fire but is not yet burning, water
is a suitable extinguishing and cooling agent. However be
aware of using water on anything still conducting electrici-
ty otherwise there is a risk of electrocution.
Instructions for firefighting measures
1. As long as the battery has not yet overheated, the sys-
tem can be cooled down using carbon dioxide or a jet
of water, provided that the following warnings are kept
in mind.
2. When extinguishing with water or other electrically
conductive extinguishing agents avoid direct contact
with exposed metal parts and cable cores, there is a
risk of electric shock from DC voltage of up to 1.000 V
and AC voltage of up to 230 V.
3. Do not inhale fumes, or use a self-contained breathing
apparatus. If possible, wear a full protection suit.
4. The battery’s heating value is approximately 140 MJ.
FAQ
What do I do once the battery modules reach the end of
their lifespan?
Contact your local SOLARWATT certified installer or
SOLARWATT office. SOLARWATT will then take care of dis
-
posing of the batteries.
Important:
The battery modules should not be disposed of
as household waste.
Can the MyReserve specifically store PV energy genera
-
ted during midday peak production hours?
The MyReserve battery storage system uses a self-learning,
intelligent algorithm to analyze household energy produc-
tion and consumption, and uses that information to learn
when and how much surplus electricity will be available
to charge the battery. The charging process is distributed
over the course of the day and completed at sunset, which
is particularly gentle on batteries and thus maximizes their
service lifespans. If additional surplus energy is available,
as is typically the case around midday, it is advisable to ac-
tivate the intelligent infeed optimizer on the EnergyMana-
ger and automatically switch on electricity consumers such
as immersion heaters or pool pumps.
If the MyReserve fails, will the photovoltaic system stop
producing electricity?
No. In most cases, the photovoltaic system will continue
operating as usual. The PV system and PV inverter will only
be disconnected from one another if and when you acti-
vate the DC circuit breaker integrated into the MyReserve.
In some circumstances, however, overcurrents (due to un-
der-load activation of the DC circuit breaker, for example)
may trigger the MyReserve’s internal fuse, which will cut
the power supply to the PV inverter.
What does MyReserve initialization involve?
After the MyReserve has undergone initial commissioning/
recommissioning and the battery relay has been opened,
the system will be initialized to check whether minimum
switch-on conditions are in place. Initialization is com-
pleted when the following conditions are fulfilled simul
-
taneously without interruption for 30 seconds: Voltage
on connected PV string >120 V, current on connected PV
string >0.3 A.
The MyReserve will only be permitted to begin CHARGING
or DISCHARGING following successful initialization. This
‘Commissioning’ validation occurs each day.
What algorithm is used to determine how the MyReserve
is charged?
Li-ion batteries age more quickly when fully charged. To
optimize battery life, the MyReserve uses a self-learning
charge algorithm under which the batteries only finish
charging shortly before sunset. In some circumstances, this
may mean that the MyReserve does not use the first energy
surpluses in the morning to charge the battery.
Does MyReserve sometimes show no clear operating state?
The CHARGE/DISCHARGE operating status is indicated by
a sequential light of the PERFORMANCE LED. At 0% - 20%
charge level, only the first PERFORMANCE LED is lit so no
sequential light can visualize the CHARGE/DISCHARGE state.
