Engineeing esign uiance

ntegal phase capabilit

or high loa alications anotiise nction
le hasee haseellow hase 3-phase conductors are built into the standard TECTONtrack, and can be picked up byevery standard TECTON lumi- naire without any modification – the selector tab in the turnbuck-le allows simple phase selec-tion. Use of 3-phase allows TECTONto be built in very long uninter-rupted runs, making it a unique aesthetic solution for transportinterchanges and other largebuildings. Up to 80 pcs. 28 W T5 lamps can be supplied by asingle TECTON system.The technical benefits of 3-phase power are persuasive a balan-UK customers need to take careto ensure that the installationfully complies with IEE Wiring Regulations BS 7671:1992. All UK electrical circuits withmore than 1 Live supply arerequired to be effectively single circuit.This means three separatelyswitched live supplies can be used sharing a single neutral so At any time, the sum of the currents on thethree phases 0, therefore for a balanced load, the return current down the commonneutral is also zero. ced 3-phase load minimises thereactive power (kA) drawn from the supplier, and can thereforereduce both the standing char-ge and consumption charge for electricity.Load shedding in the case ofoperation by a generator can easily be planned to maintainadequate illumination of keyareas in the case of supply fai- lure. 3-phase also allows switch-offof most luminaires at night orduring periods of low require- ment, while maintaining suffi-cient illumination for closed circuit television or routine se- curity inspection.
Voltage (V) ------ Time (milliseconds)

C single cicuit phase sstem

long as they share a single iso-lating fuse (as per the above diagram which is a single cir-cuit, 3 Live system).It is not acceptable to have three separate isolating fuses in the UK.Using this type of circuit there isa maximum installed load to ensure the neutral does not getoverloaded, in this case 16 A.The voltage drop on the TECTON track-system (2,5 mm
MainsOptional phaseL1 L2 L3N 16ANL1 L2 L3

oltage op

2 with 16 A and 1,5 mm
2 with 10 A)is less than 3 at a systemlength of 70 m. Dependent on load the TECTON system canreach over 100 m. ower ergenc iing