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SOLAR STREET LIGHT    SOLAR LANTERN     SOLAR HOME LIGHTING     SOLAR GARDEN LIGHT     SOLAR WATER PUMP       SOLAR CHARGE CONTROLLER

 

SOLAR STREET LIGHT :

SED  Solar Street Lights are immensely useful as stand alone source of light on streets and in premises, gardens and industrial complexes. 

• It conforms to MNRE specifications.
• It is a packaged solar powered outdoor lighting system which provides easy and quick way of tapping the solar power.
• The system is very easy to install needing no special skills, tools or expertise.
• It provides a steady source of light in areas where conventional sources of mains utility are erratic, unreliable or unobtainable.
• It is independent and self-contained and hence needs no extra wiring or cables.
• It saves on costly transmission losses.

           NEW INTRODUCTION:

•  Solar street light is also available in Power LED version. The all-weather fixture comes equipped with 6/9/12 LEDs of 1W each. It comes equipped with dusk to dawn charge controller and high efficiency power saving LED drivers inside.
• Automatic dimming after preset time in the evening is optionally provided. LEDs are automatically put on dimming mode after 4/5/6 hours after dusk. This saves on panel and battery cost.              

        SALIENT FEATURES :

•  Bright light of 900 Lumens from 11W CFL.

• Weatherproof enclosure.

• Automatic on-off at dusk and dawn respectively.

• Special solar grade battery of 12V/75Ah.

• High efficiency inverter with preheat circuitry for 4
   pin CFL..

• Charge controller suitable to pump in up to 6A of
   charging current.

• Protections against reverse connection of 
   battery/panel, over charge and deep discharge.

• Two solar panels of 37W each

• 2 No-Sun days autonomy
  

SOLAR LANTERN :

A Solar Lantern from SED is an excellent solution for light at homes where mains utility is unavailable. Based entirely on MNRE specifications, it has the following salient features.

       NEW INTRODUCTION:

    The Kits are available for OEMs which are suitable for LED lanterns operating on 6V/12V. These are with full protections and additional mobile charging output is provided. Kits come in ready-to-use conditions with terminals. No soldering needed.

          SALIENT FEATURES:

1. Entire electronics housed on a single PCB     with connectors for easy replacement without any need of desoldering.
 2.It contains a high frequency, 27KHz, pure sine wave inverter to drive 4-pin, 7 W CFL with pre-heat technique to avoid the blackening of ends.
 3. Inverter is protected against accidental short or open circuit conditions.
 4. Charge controller is shunt type regulating with temperature compensation.
 5. Very low drop out voltage to utilize the full potential of solar panel is achieved by a Schottky diode which also prevents reverse current from battery to panel at night.
 6. Protections are provided against reverse battery connection, over charge and deep discharge of battery and short circuits.
 7. Idle current is less than 1 mA for prolonged shelf storage.
 8. Lumen output is constant over entire operating range of battery voltage.
 9. Two indicators are provided to show the charging state and battery low condition by two LEDs.
 10. Sealed maintenance free battery of 12V /7 Ah is fitted inside to give over 4 hours of backup every day.
 11. 10W solar panel with suitable cable for connection is provided.
 12. Over 90 % of rated Lumen output is guaranteed after 1000 cycles of operations with 2 minutes on followed by 4 minutes off period as is mandatory by MNRE.
 13. CFL is fitted in base down configuration with 360 degrees orientation.

SOLAR HOME LIGHTING:

In standard package, two fans and two CFL of 11/9W supplied as electrical gadgets. 2x37W SPV panels for charging 70Ah/12V battery. The system can be custom made as per requirement by employing solar grade inverter of very high efficiency upto 1KW capacity. The number of batteries and panels depending upon the individual load requirement and back-up time desired on daily basis. Very useful for places where mains supply is erratic or unavailable. A SOLAR UPS   operating entirely on solar energy and suitable to drive the loads like PCs, Lights, Fans, TV and such gadgets is also available in different capacities.

NEW INTRODUCTION:

A very economical solution is available for remote areas. It employs LED lighting. A control box houses 12V/7Ah SMF battery, 10Wp SPV,   3 to 4 LED bulbs 1.5W. The box has mobile charging output as well. Available in total package in ready to use form.

      SOLAR GARDEN LIGHT:

•  Self contained unit . No need for wiring.

•  Automatic on at dusk.

•  Adjustable height to suit individual requirement

•  Uses 10 W panel. Mounted on the pole.

•  12V/7.2Ah SMF battery.

•  7 W CFL

•  Weather proof luminary fixture housing CFL

•  Electronics and battery housed in weather proof enclosure. 

•   Full protections against reverse battery, reverse panel, overcharge and deep discharge of battery.

•  Three LED indications. “Charging”, “Stand by”, “Battery  Low”.

•    On off switch with three positions, Dim, Bright and Off

•    Built-in provision for mains charging when sunlight is not available during dark monsoon days.

•  Modular construction for ease of installation.

           SOLAR WATER PUMP: 

• If you need to supply water beyond the reach of the power lines, then solar power can solve the problem.  Photovoltaic powered pumps provide a welcome alternative to fuel burning engines, windmills, and hand pumps.  Thousand of solar powered pumps are working throughout the world.  These produce best results during sunny weather when  the need for water is greatest.

CHARGE CONTROLLERS: 

Charge Controllers play the most important part in PV systems as they decide the conditioning of raw power from solar panels. These are normally available in two modes of operation, Series and Shunt. There are distinct advantages of both the types. In smaller power system, Shunt versions are found to be efficient and cost-effective. Whatever be the mode of control, these can be either simple on-off type with panel disconnect and reconnect set points or the latest PWM type. The later is found to be extremely efficient in maintaining SOC and life of battery. See advantages of PWM CHARGING .

By default, all our Charge controllers are of PWM type. On-off versions are available on request. 

In higher capacity versions, temperature compensation is provided for better charging of the battery. While charging, battery should not be over-charged and while discharging (supplying current to the loads) it should not be deep discharged. To have these protections, all our controllers come with presets provided on kits to fine tune the requirement depending upon the application and type of battery used. Additional protections against reverse current flow from battery to panel during night, reverse connection of battery or panel and overloads at output are all provided as standard feature.

Some controllers come with built-in LED drivers as well. For systems using LEDs as lighting source, these controllers are cost effective and easy to implement balance of system. This is especially useful for LED based solar street lights. 

The charge controllers are available with Dusk to Dawn operation with programmable auto-dimming after a preset time. The time delay for dimming and percentage of dimming can be set as per requirement. This feature saves on cost of panel and battery in stand-alone LED based solar street lighting systems.

To have better efficiency, the drop between PV panel and Battery while charging should be negligible. So also the drop between battery and load while battery being used to supply the power to the load.  Additional, quiescent current (NLC) of the controller should be extremely small as it is continuous drain on battery. All our controllers, by default, use MOSFETs with totally circuitry have the lowest quiescent current.

For OEMs, we have all the kits in ready to use form. The kits has easy interconnection features to make connections to Panel, Battery and Load. Terminals and relimates are provided everywhere so that no soldering is needed to implement BOS. Replacement of kit can be done by any non technical person as plug and play arrangement is found everywhere.

Some standard kits are available in moulded housing to be used directly as independent unit.

Taking into the need of the hour, most of our controllers come with MOBILE CHARGING output as well. Mobile charging cricuitry provided on board is of smps type with controlled charging current and full protections against short circuits. The mobile sets are thus fully protected against any overcharge while kit efficiency is maintained high.

     McHM5i  / McH10Si / McDD5i  McH21Si 

5A/10A   12V/24V Charge Controller for Home   Lighting                                                     5A Charge Controller for Street Lighting

McHM5i    McH10Si      McH21Si                                                                                                 McDD5i

McH1i (uses McH1 kit inside)

(Most Compact Charge Controller in moulded housing.)

•  Most Compact PWM solar charge controller for low power application
•  Suitable for 12V system
• 2A current handling capacity for both charging and supply to load
• MOSFET based design for quiescent current less than 1mA
• Ultra low input and output voltage drop 
• True indicators for Battery Low and Charging
• Housed in compact ABS moulding with accessible cables for connections to Panel, Battery and Load
• Can be directly used in OEM box as well

REPLACED BY McH1

(Solar lantern kit, 6V)

(Solar home lighting kit. Economy. 6V)

(Box)

(Box)

(Interested in detailed technical operation of this kit? Click here.

(Box)

Tel: +91-20-24391151         email:    info@sadhana.co.in

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