STATCON ENERGIAA HBD Series, Руководство по эксплуатации продукта

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6. BATTERY AND BATTERY CHARGING
Although Batteries are not a part of the equipment supplied in this consignment, but since this machine works
only with the Batteries connected, it's important to discuss about their selection and usage.
Please note that the SSSI range of inverters are designed for:
 Flooded LM Batteries
 Sealed Maintenance VRLA Batteries
 Sealed Maintenance Tubular Gel VRLA Batteries
All the SSSI machines supplied have been configured for a common battery type, and in case of mismatch; the
settings need to be checked at the time of installation. So, it's always recommended to check the battery
charging parameters at the time of installation for better performance.
Before we proceed, let's discuss a few important things about batteries and their connections in any storage-
based installation. These are standard Industrial practices and inverter manufacturer shall not be responsible
for any conflict in opinion with the recommendations of the battery manufacturer:
1. Never select the battery blindly as it is very important to study the application to which the battery is
subjected. Main points of consideration include discharging rate, depth of discharge, rate of charging,
ambient temperature, source of charging, etc.
2. Do not ignore or bypass any recommendations of the battery manufacturer as battery life is very specific to
the conditions under which it can survive the said life.
3. Interconnection method of various cells is very important and preferably copper bus bars should be used for
interconnections.
4. Battery bank should always be insulated to avoid an electrical shock.
5. In case of flooded batteries, regular top up of suitable (as per battery recommendation) water is very
important.
6. Specific Gravity check should be a part of regular maintenance and whenever required an equalized charging
cycle should be initiated.
7. Batteries should always be placed in a separate room to avoid acidic fumes.
8. Length of cables from the Battery to the PCU should be kept to minimum to avoid the losses. Cable sizing
should also be done to minimize the losses.
9. Never connect more than 2 battery banks in parallel to a single system. This may lead to imbalanced charge
discharge cycles of the 2 banks ultimately causing stress to one of the banks.
10. Never discharge your batteries beyond 70% DOD as it may damage your batteries permanently.
11. A battery designed to give back up of 10 hours and discharge rate D, will not give a backup of 20 hours at
discharge rate of 0.5 D. The relationship is never linear.
12. Always charge the batteries at the voltages prescribed by the battery manufacturer. Always double check
the charging voltages in the inverter machine during installation.
13. Battery is passive but very demanding in nature. Use battery only as recommended to get the full life of the
battery.
6.1 BATTERY CHARGING TECHNIQUE IN HBD RANGE OF INVERTERS
Entire range of HBD range of inverters have inbuilt Solar Charger as well as Grid charger. These chargers can
charge the battery connected at the rated voltage and current. These battery charging sources have been
discussed below:
6.2 MPPT-BASED SOLAR CHARGE CONTROLLER
This is used to charge the batteries using Solar Power. This Solar Charger works on MPPT Algorithm which is
better as compared to the conventional PWM charging method. Not only does it perform the MPPT (Maximum
Power Point Tracking) function but also carry out the proper 3 stage charging cycle on the connected batteries.
Unlike the battery-less Inverters, here, in storage-based machines, separate power electronic switching
device performs the function of charging through PV power. This has inbuilt reverse polarity protection in form
of a series diode to avoid damages in case of wrong polarity connections. Input of Solar Charger also has Surge
Protection device in form of Metal Oxide Varistors (MOVs).