SF STANTUBULARHome -> Sf Industrial

Features

  • Tubular Technology
  • Resistance to Abuse
  • High Acid Volume per AH
  • Electrolyte level indicator
  • Deep Cycle Design
  • Tower type Design
  • Common Side Venting
  • Conforms to IS 13369 - 1992

Advantages

  • Very Long Life
  • Suited for use in areas of Frequent Power-cuts (800 to 1000 cycles of Deep Discharge as against 300/400 cycles of other Batteries)'
  • User Friendly
  • Can withstand Overcharge Better
  • Acid volume per AH is 30% more than ordinary Tubular Battery, acts as a Coolant and ensures Very Low Maintenance
  • Occupies Less Floor Space, totally new Look
  • Ensures Consistent Quality
  • Less Polluting, Environment Friendly

Applications

  • Home UPS & Inverters

Technical Specification for SF STANTUBULAR

SPECIFICATIONS CHART
Battery
Type
Nominal
Volts
Rated Capacity (Ah) at 27°C (1.280 sp.gr.) Dimensions (mm) ± 3 mm Weight ± 5%, (Kg)
20 Hr @ 1.75V/Cell 10 Hr @ 1.75V/Cell 5 Hr @ 1.75V/Cell 3 Hr @
1.75V/Cell
1 Hr @
1.75V/Cel
Length Width Height* Dry Filled
ST500 12 150 120 100 86 60 500 187 430 31.00 56.80
ST550 12 165 135 112 97 68 500 187 430 35.33 57.50
ST650 12 200 160 133 115 88 500 187 430 45.00 72.00

* the height mentioned is up to terminal top.

BATTERY CHARGING SCHEDULE
Battery
Type
Nominal
Volts
Rated Capacity (Ah)
at 27°C, 20 Hr @ 1.75V/Cell
Initial Charge at Constant Current (A) Minimum Ah Input During Initial Charge Approx. Acid Qty (1.220 Sp. Gr.) in ltr Constant Potential Limiting Current (A) Trickle Charge Current (mA)
Start (upto 2.36 vpc) Finish (upto 2.75 vpc) Min Max
ST500 12 150 14.4 7.2 540 23.80 30 120 480
ST500 12 165 16.0 8.0 610 20.00 34 135 540
ST650 12 200 19.2 9.6 720 21.60 40 160 640

Initial Charging Instructions

  • Filling in specific gravity 1.220 ± 0.005 at 27°C
  • Rest period 12 hrs.
  • Minimum Ah input as per above chart.
  • In order to reduce the charging time, the initial charging current would be as specified till 2.35 Volts/Cell followed by finishing current as specified till 2.75 Volts/Cell.
  • However in both cases, Minimum Ah input to be given. Under no circumstances, battery temperature should exceed 50°C.
  • In case the temperature exceeds 50°C, adequate rest to be given till the electrolyte temperature comes to ambient temp. and charging to be continued
  • Condition of fully charged
    • 3 consecutive hourly readings of specific gravity and voltage become constant.
    • Top of charge voltage will be around 16.2V - 16.5V
    • All cells should gas freely.
    • Minimum Ah has been given
  • Specific gravity at fully charged condition - 1.250 ± 0.005 at 27°C

Normal Recharging Instructions

Battery should be re-charged through an Inverter at constant potential mode of 14.4V with limited current as specified. After battery potential reaches 14.4V, the battery should continue in float charge mode at constant potential of 13.8V.