detailed note on solar street lighting system · solar street lighting system 1.3 lighting dome the...

SOLAR STREET LIGHTING SYSTEM

DETAILED NOTE ON SOLAR STREET LIGHTING SYSTEM

General Information

A Solar Module produces electricity when exposed to the Sun,

then it charges a battery and releases to a load when required.

There are Charge Controller and

electronics which functions in the

following manner.

� Regulates charging input to the

Battery � Prevents Over charging of the

Battery � Prevents Low discharging of the

Battery � Automatic Switch ON & OFF of

the Load ( in this case it is the Lamp)

DIFFERENT TYPES OF SOLAR STREET LIGHTING SYSTEM

Four different types of Solar Street Lighting Systems are available , namely,

1. STAND ALONE STREET LIGHTS

2. CENTRALISED STREET LIGHTS

3. PORTABLE STREET LIGHTS

4. RETROFIT STREET LIGHTS


1. SPECIFICATIONS OF SYSTEM COMPONENTS

1.1. SOLAR MODULE

This is a very important source for power generation and

the solar modules supplied by SOLKAR are made by

under strict quality standards and specifications.

We supply only SINGLE/MULTI CRYSTALLAINE silicon

cells based modules which have long life of 25 years and

our modules are available only with above 15% efficiency

solar cells. This assures a greater power generation at

less space needs and longer life cycles.

1.2 BATTERY

Many a times , a solar street light fails because of

improper selection of battery type and specifications. As

you are aware , power is generated only in day time but

load is used only in night time. Therefore , battery is a

crucial component of the solar street lighting system.

After considerable experience from field and trying of

different battery spec and makes , we have zeroed in on

LEAD ACID , TUBULAR , LOW MAINTAINENCE , C 10

RATED BATTERY ( INSTEAD OF C 20 ) to make sure the

battery has longer life cycles and charges faster and

discharges longer.


1.3 LIGHTING DOME

The most important aspect to choose on these is the light fitting.

Primarily the source of light can be as below

Tube Lights

CFL LED

Metal Halide

Sodium Vapour

It is very important to have low power consumption, high

brightness light source. We manufacture only LED type Solar

Street Lighting system.

Quality of LED used is very very important to ensure proper

brightness, lower power consumption and longer life. There are

plenty of unbranded Chinese LED available in the market which

costs almost one fifth of a branded product. We use only OSRAM

/ PHILIPS LED in our product. The casing is also very important

because it should be water proof , Heat proof and easy to clean

and having high transparency .

1.4. CHARGE CONTROLLER AND ELECTRONICS

SOLKAR – manufacturing CHARGE CONTROLLER for

different applications since 1992. These are made with

latest designs , components and easy to service and

replace with highest reliability.


SPECIFICATION OF SOLKAR LED LUMINAIRE

Luminaire power 6W 12W 24W

Light Source High Power LED High Power LED High Power LED

Input Voltage 12V DC 12V DC 230V AC

No of LED 6 12 10

Wattage per LED 1 1 1.6

Lumen /WATT 100 100 120

Light Output per fitting

(Lumens) 600 ± 5% 1200 ± 5% 1920 lm ±5%

LED Make Osram/Nichia/Philips Osram/Nichia/Philips Philips

Color Temperature(K)

Pure White: 5000-

7000k, Warm White:

3000-4000k

Pure White: 5000-

7000k, Warm White:

3000-4000k

Pure White: 5000-

7000k, Warm White:

3000-4000k

CRI >70 >70 >70

Driver Efficiency >85% >85% >85%

Driver Constant Current Constant Current Constant Current

LED life

40 000 hours 70%

lumen

maintenance @

Ta=36°C:

40 000 hours 70%

lumen

maintenance @

Ta=36°C:

40 000 hours 70%

lumen

maintenance @

Ta=36°C:

Light Output –LUX 12 Lux at 3 mtr ht 14 Lux at 4 mtr ht 19 Lux at 4.2 mtr ht

Suggested Pole to Pole

pitch 6 mtr 10 mtr 15mtr

Net Wt of luminaire Kg 1 1.5 1.5

INGRESS PROTECTION –

IP 65 65 65

Light Body& Lampshade PC with integrated

Heat sink

Aluminium Die Cast

and PC

Aluminium Die Cast

and PC


COMPARISON OF BRIGHTNESS VS HEIGHT FOR 3 DOMES

6 W DOME BRIGHTNESS

12 W DOME BRIGHTNESS

24 W DOME BRIGHTNESS


2. STAND ALONE SOLAR STREET LIGHTING SYSTEM

Basically Stand alone systems are installed in the field. There is a

pole which has Solar Module on the top, a Dome with light fitting, a

Battery box with electronics and Battery in it. These products are

commonly seen in decentralised light applications such as Road

lights and Lighting at un-electrified locations etc.,

In stand alone street lights – all the components of the street lights

such as SOLAR MODULE , BATTERY BOX , CHARGE

CONTROLLER, LIGHT DOME are fixed in a single pole itself.

The battery is Charged only by SOLAR MODULE.

There is no connection of EB power to this pole. The poles are installed

at site and civil works foundations are required to ensure their rigidity.

We have Stand alone system in 2 models, which is with 6W LED Dome

and 12W LED Dome.

The specification of Solar Module and Battery depends upon the

Wattage of light dome and number of hours of illumination required

every day.


The detailed specification of Stand Alone – Solar Street Lighting system

manufactured by us are given below.

Sl No

Description

Sun Divine

Sun Divine +

1 LAMP POWER 6 W 12 W

2 Hrs. of Operation/Day

12 Hours 12 Hours

3 Days of Autonomy 1 day 1 day

4 Solar Module 37W 12V

75W 12V

5 Battery 12V 20AH

12V 40AH

6 Charge Control Unit Auto On / Off

Charge Control Low Cut Off

Auto On / Off Charge Control

Low Cut Off

7 Pole – Ref drawing

MS 2” DIA

MS 2” DIA

8

Application-suitable for

Private Road / Peripheral Lights

Private Road / Peripheral Lights

9 Price-Each Rs.15,000.00 Rs.26,000.00

• The above Price does not include GST @ 5%, Transportation , Installation and Civil work charges . Includes POLE , SOLAR MODULES , BATTERY , DOME , CHARGE CONTROLLER

• WARRANTY :

The solar Modules are warranted for 10 years , Lamp Dome – 1 year , Battery – 3 years , Electronics and charge controller – 3 years


The Main Concerns of the Stand Alone Solar Street Lighting system are

i. Cleaning of the Solar Modules needs careful attention as it is

mounted on a single pole at a height of 12/15 feet and must be done every month as it is mounted in the field and dust accumulations can be fast.

ii. Battery is charged only by Solar Module and therefore during

rainy season this product will not work beyond 1 day of Autonomy and the light must be manually switched OFF during rainy season. If not the battery will be dead immediately

iii. If the above 2 procedures are not done , then the life of the battery is not more than one rainy season

iv. Even small level of dust on the Solar Module affects the performance.

v. Being a fixed model in future shadow may fall on the Solar Module if any adjacent tree grows or building comes up.

vi. These are fixed products which cannot be shifted or modified.


3. CENTRALISED SOLAR STREET LIGHTING SYSTEM This is a very unique product which is suitable when you have number

of lights one after another, for eg; Road lights, Compound wall lights,

Roof top lights, etc. And when you need brighter lights , taller pole

heights and easy maintenance and future upgrades are required.

We have successfully innovated and developed this product in a

manner addressing all the drawbacks of Stand Alone Street Lighting

system which are as follows

� Cleaning of the Solar Module is easy as it is located in one

location. � Battery is charged both by Solar and in rainy days by normal

EB supply – thereby ensuring 365 days working and better Battery life .

� We have combined energy conservation by making all the

Street Lights burn in full brightness between 6.00 pm to 10.00 pm and only alternate lights works from 10.00 pm to 6.00 am. It is also possible to make all the lights work with full brightness from 6.00 pm to 10.00 pm and 1/3 brightness from 10.00 pm to 6.00 am .

� It is possible to have display banners on each street light poles as shown in the picture and have them convey message or sponsorship of corporate companies.

� The systems are supplied with complete – solar system with battery back up , inverter , Poles with light domes , wiring of the each pole with the main inverter , Trenching and closing, Training and back up service .

We manufacture these Centralised system with a 24W LED dome. We have package of 25 lights, 50 lights & 100 lights.


Uninterrupted Power Earth

Centralised Solar Street Lighting System


• WARRANTY :



4. PORTABLE SOLAR STREET LIGHTING SYSTEM These are first of its kind in India which enables the user to have portable solar street lights which can empower at any location either outdoor or indoor or roof top. The Advantages of this product is as below

� Light weight and it is ON wheels and can be positioned at any usage point

� The height can be adjusted as required

� The number of lamp fitting can be additional if more brightness required. For example you can have one or two Domes on the same pole.

� Dual Charging facility by both Solar and EB

� Ideally suitable for – Road construction projects, Builders, Municipalities, Colleges, Schools, Factories, Flat/Apartments, etc.,

� Easy to maintain the Solar Module, as it is within reachable height.

� Great advantage is cleaning of the module/ top up of the battery are very easy in this model.


ALL HEIGHTS – SINGLE DOME FRONT & BACK – SINGLE DOME

ALL HEIGHTS – TWO DOME

BATTERY BOX WITH TROLLEY BATTERY BOX WITH EB SWITCH MODULE FRONT / SIDE

TWO DOMES DOMES ALL SIDES WITH OUT MODULE


Different Models

Model A B C D E F

Luminaire 6W x 1 6W x 1 6W x 2 12W x 1 12W x 1 12W x 2

No Of hours 12 6 6 12 6 6

Solar Module

Rating 37W 12V 15W 12V 37W 12V 75W12V 37W 12V 75W12V

Battery

Type Lead Acid

Tubular

Lead Acid

Tubular

Lead Acid

Tubular

Lead Acid

Tubular

Lead Acid

Tubular

Lead Acid

Tubular

Rating 12V 20Ah -

C10

12V 20Ah -

C10

12V 20Ah-

C10

12V40Ah-

C10

12V 40Ah-

C10

12V40Ah-

C10

Solar charge controller

Rating 6A 6A 6A 10A 6A 10A

Type PWM PWM PWM PWM PWM PWM

Efficiency >95% >95% >95% >95% >95% >95%

Mode Manual Manual Manual Manual Manual Manual

PRICE Rs. 18,000/ Rs. 15,000/ Rs. 19,500/ Rs. 30,000/ Rs. 24,000/ Rs. 32,000/

Protection Short Circuit protection ,Reverse polarity ,Battery Over charging and deep discharging

The above price does not include GST @ 5% , Transport cost and no installation is required

SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE DUE TO CONSTANT DEVELOPMENT TO IMPROVE IN DESIGN,FUNCTION

OR FOR ANY OTHER REASONS

• WARRANTY :


SPECIAL REMARK

You can purchase one sample and use it to know how

many you will need.


5. RETRO FIT MODEL - SOLAR STREET LIGHTING SYSTEM

In this model , we retro fit to an existing street lighting pole – solar lights . They are

equivalent to stand alone models or Central lighting system models as described

above.

You can select the model from the Stand alone or Central system and have them fitted

on to your existing poles. This will save – additional cost of pole , civil work ,

transport and wiring for back up working .

It is possible to use this pole as in dual modes – only solar during summer months and

on normal electricity with existing street light dome during winter or rainy months.

To design and offer cost , we need to know the following details

1. Layout of the existing poles and contour of present

positioning with pitch distances

2. Dimensional details of the pole , lamp load etc

3. Preference of stand alone or centralised solar portion


WORD OF CAUTION

The biggest concern of Solar Street Lighting system is proper

selection of the lamp brightness. Even in LED there is so

much of varieties manufactured from China, though the

specification are same, the brightness varies and life of LED

are much lower.

� Select reliable Solar Module with a minimum efficiency of

16%, which will give you a life of 20 years. � Proper selection of Battery and Electronics. � Most of Battery companies including popular brands

offer 5 years warranty – many time free replacement under warranty is not given on account of poor charging and discharging. Please note that a Simple warranty card of 5 years does not assure the consumer free replacement for 5 years.

� Do not purchase street light – just blindly – only based on cost aspect.

� Be specific , analyse the design aspects of solar module capacity , lamp shade , battery aspects.

� Many supply sub standard design with improper solar module ( keeping it very less ) , give higher rated battery


SOLKAR SOLAR INDUSTRY LIMITED

# 13/2 , Jayalalakshmipuram I st Street, Nungambakkam

Chennai-600 034. INDIA

Tel: +91 44 28274142,28271819 , Fax : +91 44 28273435

Email : [email protected]. Webmail: www.solkar.in

– which means the product will die after few months of working at field

HOW TO ORDER

Please select the model and quanity required and

Mail the details to [email protected] Our normal delivery time is 4 – 6 weeks. Confirm your Order with your requirement with 50% advance payment and balance against delivery Our Bank Details for - NEFT/RTGS - TRANSFER CITY UNION BANK LTD , THIRUMUDIVAKKAM BRANCH, CHENNAI - 600 044 A/c Name : SOLKAR SOLAR INDUSTRY LIMITED Current A/c No. : 4 0 0 1 0 9 0 0 0 2 1 0 2 8 8 IFSC CODE NO. C I U B 0 0 0 0 4 0 0

detailed note on solar street lighting system · solar street lighting system 1.3 lighting dome the...

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