Surge protection for LED street lighting

Bro Anwendung ÜSS für LED DE.indd   1 05.02.16   09:01 Surge protectionfor LED street lighting Application example   

2 1 PHOENIX CONTACT Bro Anwendung ÜSS für LED DE.indd   2 05.02.16   09:01 Surge protectionfor LED street lighting Application  In Germany, approximately 9,000,000 light points are installed for street and urban lighting. Increasingly, many municipalities and operators are relying on the use of LED lamps for their future lighting needs. Compared to conventional lighting, LED lamps can reduce energy consumption by up to 70% at the same light output. A signifi cantly higher proportion of the energy used is now converted into light rather than generating unwanted heat. As a result, the reduced energy costs are a key factor for reducing amortization time to a signifi cant degree. That has never before been possible with previous technology. Modern LED post lamps boast an electric strength of 4 kV. However, the surge currents and surge voltages generated in the grid can signifi cantly exceed this value. Due to their exposed location, the lamps are also particularly susceptible to direct eff ects of lightning. Additional high costs are incurred to pay for personnel to perform repairs on defective lamps and for the necessary elevated work platform. This signifi cantly increases the amortization time. A suitable protection concept allows users to protect LED street lighting eff ectively. General technical designTypically, the supply cables for a post lamp are guided through the soil and into the post from below.The lower area of the lamp post includes a wiring space that houses a cable junction box for holding the fed-in cables and for securing the lighting. GroundingIdeally, in newly planned lighting systems that are being installed, the supply cable  (2) should be laid using a corrosion-resistant grounding cable (1) located above. Street lamp with LED technology Cable junction box for a street lamp with integrated surge protective element Laying the grounding cable and supply cable

PHOENIX CONTACT   Bro Anwendung ÜSS für LED DE.indd   3 05.02.16   09:01 Solution Phoenix Contact off ers you surge protection solutions that reliably protect your LED street lighting from the direct and indirect eff ects of lightning.Surge protective devices should be included in the planning process of new systems, either in the street lighting distributor, cable junction box or directly in the LED lamp head. If surge protection is not taken into account in the planning stages, solutions can easily be retrofi tted in the relevant areas of existing systems. Your advantages Reduced maintenance costs for lighting due to a decrease in premature failures Ensuring amortization times thanks to higher availability Optimally tailored protection concept for the whole street lighting installation Quick maintenance thanks to pluggable and testable protective elements Can be used in devices with protection classes I und II Overview of surge protective devices and installation location The distance between the grounded supply cable and the grounding cable must be 0.5 meters in accordance with DIN EN 62305-3 (Supplement sheet 2). The grounding cable equalizes the potential and prevents possible fl ashovers to the supply cable.A risk assessment must be conducted to create a suitable surge voltage and lightning protection concept. The  purpose of this assessment is to evaluate the potential direct and indirect eff ects from lightning.Lightning current pulses and resulting surge voltages can be caused by a wide variety of events:• By direct eff ects of lightning to the  lamp, supply cable or periphery of the street lighting • By indirect eff ects of lightning due to  capacitive or inductive coupling in the street lighting supply cable • By switching operations, which are  caused by ground faults, short circuits or when the fuses are triggered VALVETRAB Type 1 / Type 2 BLOCKTRAB Type 2 / Type 3

Bro Anwendung ÜSS für LED DE.indd   4 05.02.16   09:01 Products Surge voltage protective element in the lamp head Type Order number Device protection for lamps with an insulated connection (L, L´, N),  protection class II BLT-T2-320-UT 2906100 Surge voltage protective element in the lamp head or cable junction box Type Order number Device protection for lamps with a grounded connection (L, L´, N, PE) or cable junction box, protection class I BLT-T2-1S-320-UT 2906101 Surge voltage protective element in the street lighting distributor Type Order number T1/T2 lightning current/surge protective device, with remote indication contact,  5-conductor system (TN-S or TT) VAL-MS-T1/T2 335/12.5/3+1-FM 2800183 T1/T2 lightning current/surge protective device, with remote indication contact,  4-conductor system (TN-C) VAL-MS-T1/T2 335/12.5/3+0-FM 2800644 Type 1 + type 2 lightning current/surge protective device, with remote indication contact, for the highest requirements up to 100 kA,  4-conductor system (TN-C) FLT-SEC-T1+T2-3C-350/25-FM 2905469 Type 1 + type 2 lightning current/surge protective device,  with remote indication contact, for the highest requirements up to 100 kA,  5-conductor system (TN-S or TT) FLT-SEC-T1+T2-3S-350/25-FM 2905470 PHOENIX CONTACT GmbH & Co. KGFlachsmarktstraße 832825 Blomberg, GermanyPhone: + 49 5235 3-00Fax:  + 49  5235 3-41200E-mail: [email protected] PXD 15-16.001.L2  Print ed in German y MNR 52007828/2016-02-15/00  © PHOENIX CONT A CT 2016