Technical Specifications for Solar LED Road Lighting ... · PDF fileOptics DME/ DMMP1 Materials and Finish Housing: Die-cast aluminium Gasket: Heat resistant silicone rubber Glass:

Solar Street Light Specification Solarbeam (Pty) Ltd

Technical Specifications for Solar LED Road Lighting Solutions

Single Luminaire and Double Luminaire

Pole Specification:

9m Hot Dipped Galvanized with powder coating

Luminaire mounting: 8m, 1m outreach

Withstand 180Kmph Wind factor

Controller mounted in Pole with inspection window, facing walkway

Top mounted with bolts set in concrete

Battery must be mounted in ground with provision for cabling. (IP65 Battery Box)

Concrete Design


Pole Specification


Technical Specifications for Solar LED Road Lighting Solutions

Typical technical specifications and recommended documentation requirements for solar‐powered LED road lighting

solutions. Requirements for the different key parts are listed separately. For solar, the key concerns include ensuring the

highest efficiency of each part, and how the parts are connected to each other in the most efficient manner, thereby losing

the least amount of energy.

Technical Specifications Luminaire

I. 40W Luminaire and LED Driver (Luminaire Test Standards: IEC/EN 60598‐1, IEC/EN 60598‐2‐3, IEC/EN 62471, IEC 62471‐2, IEC 62778, EN 62493, EN 55015, EN 61547, EN 61000| LED Driver Test Standards : IEC 61347‐1, EN 61347‐2‐13, EN 62384, EN 55015, EN 61547, EN 61000)

Parameters Ideal Specifications Reason/Justification for Recommendation Proof of Technical Compliance

Light Quality and

These parameters will ensure sufficient levels of light

– LM79 Test Report As per CIE standard for – Data Sheet

1 Overall on the road for safety purposes, per end‐user road

road type – Luminaire Supplier Uniformity Ratio specification

Declaration

All quality suppliers today offer ≥100 lm/W system

efficacy for DC‐based luminaires, at which level one

can ensure more than 50% energy savings at the

system level compared to existing HPSV solutions of

even 85 lm/W efficacy. (LEDs provide directional light

resulting in higher light levels on targeted surface for

the same lumen output).

2 System Efficacy ≥100 lm/W There is a difference in efficacy values between AC

– LM79 Test Report and DC luminaires, with the former having lower

efficiency to optimize cost. Meanwhile, DC luminaires

have higher efficacy to optimize the system (i.e. more

efficient luminaires need less energy and hence, will

require smaller solar panel and battery)

NB. Efficacy values of LEDs are rapidly evolving. It is always recommended to consult with a reliable

manufacturer for the latest efficacy levels.

A crisp neutral white colour creates a more inviting

environment

4000 ± 500 K (Neutral In a survey conducted by The Climate Group, the – LM79 Test Report CCT and Colour White) public showed preference for the white light provided

3 – LED Manufacturer Consistency by LEDs over the colour of conventional road lighting,

Declaration <7SDCM as it allowed them to feel safer.36

Better colour consistency prevents visual colour differences between light points

Colour Rendering

A CRI of ≥70 is specified to ensure enhanced ability – LM79 Test Report 4 ≥70 over HPSV (with CRI of 25 to 30) to show true colours of – LED Manufacturer

Index

objects.

Declaration

High pressure die‐cast The specified housing should be long lasting, robust,

– Luminaire Manufacturer’s aluminium w/ heat

5 Housing and with good heat management. Declaration management system in

– Visual inspection of sample light grey colour

Glass has better light transmittance over its lifetime. – Luminaire Manufacturer’s Tempered glass is safer to use; when broken, it

6 Cover Tempered glass cover declaration disintegrates into small pieces. It also protects against

– Visual inspection of sample entry of dust/water & UV rays from the sun

7 Maintenance Tool‐less opening For maintenance cost‐saving, specify for a fixture that

– Visual inspection of sample Replaceable gear tray is easy to open and replace components.


Luminaire Specification


Description Specification

Luninaire LED 40W

Input Voltage 12V/24V DC; 24V DC

System Lumen Output NW: up to 14200lm

CW: up to 14200lm

System Efficacy Up to 120lm/W

CCT:CRI 75 ± 5

Colour Temperature 4000K(NW),5700K(CW)

Optics DME/ DMMP1

Materials and Finish Housing: Die-cast aluminium

Gasket: Heat resistant silicone rubber

Glass: Tempered Glass

Frame: Grey Paint RAL7040

Luminaire Working temperature -40°C< Ta< 45°C

Lifetime 50,000 hours

(70% lumen maintenance @ Ta = 35°C)

Installation Ø148-160mm pole, side entry

Dimensions (LxBxH) SB371: 422 x 318 x 136mm

SB372: 522 x 318 x 136mm

SB373: 853 x 318 x 136mm

Weight SB371=7kg; SB372=9kg; SB373=15kg

Windage area SB371 0.134m2SBP372 0.166m2; SB373 0.271m2

Recommended mounting height 6-11m

Classifications IP66; IK08; Class I

Surge protection SPD: 2KV

Controls Standalone dimming program

Maintenance Tool-less opening of housing;

Tool-less gear tray change

Certifications CE; CB; IEC 62471

Cable length 9.5m-12.5m

Run Time Extension Optional

Motion Sensor Mode Optional


2x 90Wp per Luminary Solar Photovoltaic Module (Test Standards: IEC 61215, IEC 61730)

Parameters

Ideal Specifications

Reason/Justification for Recommendation

Proof of Technical Compliance

Crystalline silicon has a higher charging efficiency than − Data sheet

Solar PV Modules made of

− Panel supplier declaration other current solar cell technologies, thus requiring

poly or mono‐crystalline

− Certificate of testing 1

General smaller solar panels.

silicon solar cells,

showing product

Requirements

The weatherproof connectors provide safe and long

equipped with weather conforming to relevant IEC

lasting connection between the module and other

proof connectors standards.

components.

It is important to have a panel large enough to

− Data sheet

Rated Output

100 -250Wp with tolerance of +- 5W

− PV panel supplier 2 generate electricity that will ensure the actual power

Power

Declaration needed for the luminaire to be operational at night.

− IEC61215 Test Report

Voltage at Rated Output Power is a necessary technical

Voltage at Rated

parameter to identify the panel feature. This − Test report

3 17.5V for each module specification is important to ensure that the battery

Output Power

− Data sheet will be charged. Typical Voltage at Rated Output Power

is 17.5V for solar panels.

Open Circuit Voltage is a necessary technical data to

identify the panel feature. If the open circuit voltage of

Open Circuit

the solar panel exceeds the maximum amount of − Test report

4 22.0V for each module voltage that can be applied to an electrical equipment

Voltage

− Data sheet (e.g. luminaire), the equipment will be damaged or

destroyed. Typical value for open circuit voltage is

22.0V per module.

5 IP Rating

IP 65 for junction box Water‐proof and dust‐proof specifications make the − Test report

IP67 for cable connector

panel and connectors more reliable and last longer.


Module Type (Pmax W) Pmax (lmp) Pmax (Vmp) SCC (Ics) (Voc) OpTemp.°C

Wind Load(Pa) Eff

35W 17.5V 35 1,94 18 2,08 22,3 -40 to 85 2.4K 12,80%

45W 17.5V 45 2,53 17,8 2,72 22 -40 to 85 2.4K 12,60%

55W 17.5V 55 3,08 17,8 3,28 22,1 -40 to 85 2.4K 13,20%

70W 17.5V 70 3,89 18 4,15 22,3 -40 to 85 2.4K 13,80%

85W 17.5V 85 4,71 18,1 4,99 22,4 -40 to 85 2.4K 14,30%

95W 17.5V 95 5,23 18,2 5,59 22,5 -40 to 85 2.4K 14,30%

120W 17.5V 120 6,8 17,7 7,36 22,7 -40 to 85 2.4K 14,30%

145W 17.5V 145 7,99 18,2 8,47 22,5 -40 to 85 2.4K 14,50%

175W 35V 175 4,8 36,4 5,06 45,07 -40 to 85 2.4K 15,00%

190W 35V 190 5,23 36,4 5,59 45 -40 to 85 2.4K 14,70%

285W 35V 285 8,02 35,5 8,5 45,3 -40 to 85 5.4K 14,60%

290W 35V 290 8,1 36,3 8,62 45,3 -40 to 85 5.4K 14,90%

295W 35V 295 8,12 36,3 8,63 45,3 -40 to 85 5.4K 15,10%

Module Type Cell Capsulate Weight (Kg) a mm b mm c mm d mm e mm t mm

35W 17.5V 36/78x78 EVA 3,27 510 535 476 295 900 25

45W 17.5V 36/156x52 EVA 4,23 660 540 626 280 900 25

55W 17.5V 36/156x62.4 EVA 4,79 660 630 626 315 900 25

70W 17.5V 36/156x78 EVA 6,2 660 770 626 390 900 25

85W 17.5V 36/156x93.6 EVA 6,61 660 900 626 450 900 25

95W 17.5V 36/156x104 EVA 7,65 660 1010 626 510 900 25

120W 17.5V 36/124.8x156 EVA 9,31 660 1270 631 630 900 25

145W 17.5V 36/156x156 EVA 10,81 680 1470 646 870 900 25

175W 35V 72/156x93.6 EVA 13,5 990 1182 956 682 900 35

190W 35V 72/156x104 EVA 14,1 990 1310 946 680 900 40

285W 35V 72/156x156 EVA 26,8 990 1970 946 577 1200 50

290W 35V 72/156x156 EVA 26,8 990 1970 946 577 1200 50

295W 35V 72/156x156 EVA 26,8 990 1970 946 577 1200 50

Cable Specification

Maximum working voltage DC1000V

Rated Current 30A

Flame class UL94-V0

Shell Protection degree IP67

Cable 4mm2

Ambient temperature range -40~+85。C

Safety Level Class II

Insertion force 50N

Withdrawal force 50N

Cable length 12.5m/11m/

7.5m


20amp MPPT Charge Controller (Test Standards: EN 62109‐1, EN 55015, EN 61547, EN 61000)

The Charge Controller is considered the “heart of the system” that regulates the flow of current in the system and starts the light when it detects darkness. It controls power harvested from the PV panel to charge the battery, with the intent of safely and reliably maintaining battery life and a high state of charge. Multiple stages of battery charging protect the battery from over‐discharging, thereby extending battery life. The charge controller also controls the power available from the battery, with the intent of limiting the depth of battery discharge to prolong battery life.


Charge controllers affect the energy efficiency of the system as well as the life of the battery, a key and

Designed to match the expensive component. It is important to ensure that

the controller is compatible with the system (panel,

− Test certificates from proposed solar PV module,

battery, luminaire) to achieve optimal performance.

battery, and LED drivers. international accredited

General Controllers are not typically bought off the shelf.

1 testing and certification

Low‐quality charge controllers that are not properly

Requirements To have a clear and reliable

organization providing

LED or Liquid Crystal configured with other components could result in multiple stages of battery Display that indicates early failures of the solar lighting installation. charging. operating status. The operating status indication is important and

convenient for field installation, monitoring, and

debugging.

Nominal Auto voltage detection offers the customer the

− Datasheet 2 Charge 12/24V DC Auto flexibility to put it into 12V or 24V system without

Voltage pre‐configuration.

Operating

A wide range of operating temperature provides

− Datasheet 3 ‐40°C to 60°C stable performance for aggressive outdoor

Temperature

applications in different locations.


250Ah Battery per Luminary (4 day Autonomy) (Test Standard: IEC 61427)

Parameters


Reason/Justification for Recommendation Proof of Technical

Compliance

Shall be sealed

Lead‐acid and gel batteries are commonly used types of batteries for solar road lighting installations.

maintenance‐free lead‐

However, Gel batteries have longer cycle lifetime,

− Test certificates from acid or gel type battery.

longer storage time, and better deep discharge

international accredited General recovery ability.

1 Fully‐sealed testing and certification Requirements

Maintenance‐free gel organization Maintenance‐free batteries allow for savings in

battery

− Datasheet maintenance costs. The make, type, nominal voltage,

and nominal capacity must be available from battery

manufacturer/ recognized test lab.

Specifying for maximum capacity ensures that the

battery can store enough power to support the

operation of the lighting system.

In addition, when evaluating bidders with similar capacity (i.e. 250Ah), consider the rate of discharge

(CX, where x is the number of hours before the battery

gets discharged). Usually, discharge rates are C10 or

C20. Thus, a 250Ah C10 battery discharges 25A every

2

Rating Capacity Maximum capacity hour for 10 hours.

− Datasheet 12V/250Ah or 24V/250Ah

To illustrate, suppose a load profile of a road lighting

tender is 10A for 10 hours and the tender only indicate

the rating capacity (e.g. 100Ah). Then, Manufacturer A

offered a 105Ah C10 battery (10.5A/hour discharge

rate) and Manufacturer B offered a 109Ah C20 battery

(5.45A/hour discharge rate). Evidently, while both

meet the required rating capacity, only manufacturer

A is capable of supporting the load profile of the

tender.

Average Self‐

Average self‐discharge rate should be as specified to

− Data sheet/ test report 3

≤3% per month at 25°C

minimize the impact on the remaining capacity of the

Discharge Rate

battery

Batteries to be supplied

Dust and water ingress will impact the battery capacity

Protection Class

in a box with protection − 3rd party test report /

4 A Class of at least IP68, and lifetime. Sufficient IP protection will prolong battery

(Under or above which ensures batteries

capacity and lifetime.

certification ground)

not damaged if 1.3m

underwater for 30 days.


Parameters


Reason/Justification for Recommendation

Proof of Technical Compliance

Batteries to be supplied Dust and water ingress will impact the battery capacity − 3rd party test report /

4B 4B Protection Class in a box or a suitable and lifetime. Sufficient IP protection will prolong battery

enclosure with protection

capacity and lifetime.

certification

(on the pole)

Class of at least IP65

Higher temperatures impact the battery’s service

Operating

Charge (‐22°C to 55°C) lifetime while lower temperatures impact the battery’s

5

Discharge (‐10°C to 55°C)

actual capacity. A wider range of operating

− Datasheet

Temperature Storage (‐22°C to 55°C) temperature can prolong battery lifetime and

guarantee battery performance.

As batteries charge and discharge, a small amount of − Graphical information on

Cycle life of the battery

damage is done to them. The amount of damage

6 cycle life versus depth of

must exceed 700 cycles depends on the type of battery and how deep the

discharge (at specified

Cycle Life when discharged down discharge is. Batteries are lab‐tested to determine how

temperatures)

to an average depth of many cycles the battery can experience before it

discharge (DOD) of 50% reaches its residual life. These cycle test results are an − Datasheet

excellent way of comparing batteries.

Battery Capacity at 77°F (25°C) 100Ah 120AH 150Ah 200AH 250AH

Rated Voltage 12v 12v 12v 12v 12v

Cells 6 6 6 6 6

Discharge rate @ 10hrs 10.0A,10.8V 12.0A,10.8V 15.0A,10.8V 20.0A,10.8V 25.0A,10.8V

Working Temperature Range

Charge ‐20° ‐̴50°C

Discharge ‐10° ‐̴50°C

Storage ‐20° ‐̴50°C

Average-Self discharge Rate, p/m (25°) ≤2%

Max Charge Current 20A 24A 30A 40A 62.5A

Temperature Compensation 18 ~ 24 mV/ºC/pcs


V. Other Specifications


Shall be provided with complete set of wiring

Waterproof accessories especially for outdoor − 3rd party lab

1

Accessory and terminals with a

minimum of IP67 applications will ensure longer lifetime and enhance report/certification

system mechanical and electrical performance.

protection class, mast‐

arms, and brackets.

Any system

2

Wind Load Rating

equipment/component The system should be able to endure the critical – 3rd party lab

in the pole shall conditions in outdoor environment. report/certification

withstand a max wind load of 2.0Pa (57 m/s).

3 Battery capacity 4 days autonomy The battery last at 4days in case of inclement weather Warranty

Min. of 5 years from date

of delivery. Warranty

for the full Warranty gives customers good service within a

− Warranty paper 3 Warranty

system (luminaire,

guaranteed period of time.

charge controller, PV

panel, battery, and other

accessories.


Documents

Technical Specifications for Solar LED Road Lighting ... · PDF fileOptics DME/ DMMP1 Materials and Finish Housing: Die-cast aluminium Gasket: Heat resistant silicone rubber Glass: