CA 630V 615V 600V 585V 570VUS 504V 492V 480V 468V 456VEU 420V 410V 400V 390V 380V

871kW 851kW 830kW 809kW 788kW

CA 590V 575V 570V 570V 570VUS 470V 460V 456V 456V 456VEU 395V 385V 380V 380V 380V

826kW 795kW 788kW 788kW 788kW

The Problem – Line Loss Resistance & Peak PoweR

Power SubSTaTion

Power SubSTaTion

The SoluTion – VoLtage oPtimization with an inteLLigent tRansfoRmeR

the electrical harmonizer–automatic Voltage Regulator• Reduced energy cost, consumption & Peak Power by up to 12% • Reduced greenhouse gas emissions• increase life expectancy of electrical equipment • measurement & Verification with an accuracy of ±4%95% of the time

abouT The Technology

the electrical harmonizer–automatic Voltage Regulator is an on-load automatic electronic tap changer with a high efficiency autotransformer that regulates voltage to the optimal level.

there is an optimal minimum voltage level below the primary level (600VCA,480VUS,400VEU) where lights, motors, etc, will operate comfortably with no effect on their practical performance. at 5% below the primary voltage (570VCA,456VUS,380VeU) these loads are still within manufacturer’s specifications but will work with less waste heat, longer life, a lower carbon foot print and less energy. however, there are two factors preventing the power company from delivering the minimum

optimal voltage to commercial and industrial facilities: line loss resistance and peak power. Power is distributed from a utility substation at a higher than necessary voltage level to ensure that the last building on the grid receives power above the minimal voltage level.

if a facility measured their incoming voltage and found that it was quite high, they could install a transformer that would step down the incoming voltage by a certain percentage. this “hard tap” transformer solution has been available for decades. however, if the grid power fluctuated down, the percentage reduction is “fixed” and the voltage can drop too low, causing a brown out.

Legend Power systems provides a simple and effective technology solution that allows qualified commercial and industrial facilities to reduce their voltage to the optimal minimum in-spec level, without any worry about going too low when the power grid fluctuates.

the automatic Voltage Regulator continually monitors a facility’s incoming voltage level and automatically selects the correct tap setting on the autotransformer to ensure power is always entering the facility at an optimal level. if grid voltage levels drop below the minimum optimal, the system is immediately bypassed ensuring that the energy flow to your building is never negatively affected.

ProducT SPecificaTion SheeT

PRodUct nUmbeR 400 500 600 700 800 900 1000maximum Primary Voltage options 600,480,400*frequency (hz) options 60,50*taps –2%–4%–6% automatic bypass (0%) Yestap change method zero crossing, on-Load, fully automatic, Processor controlled, electronicthd (v) on tap change <0.5%thd (current) on tap change <2.0%efficiency 99.89%ambient temperature 0°c to 40°c – relative humidity 0–95%cooling method convectionsystem configuration 3 phase, 4 wire input/outputswitching speed (msec) <100Repetitive full Range tap changing interval (sec) 30non Repetitive tap changing interval (sec) 10coil construction forminsulation class 180 (h)installation methods floor mount, ceiling mount, seismic frame, split module maximum system Load current Rating (amps) 400* 500 600* 700* 800 900* 1000*harmonizer current Rating (amps) 400,300* 400 500 750 750 750 750,1000*system / breaker current (amps) 400 500 600 700 800 900 1000Reg coil Ω @ 25°c / 6% 0.105 0.094 0.084 0.049 0.049 0.049 0.032% impedance @ 115°c 0.16 0.16 0.17 0.18 0.18 0.18 0.22temp rise @ full Load 38 38 39 42 42 42 43

mechanicaL (approximate – will vary with installation configuration)weight (kg/lbs) 355/783 355/783 380/838 604/1332 604/1332 604/1332 604/1332, 702*/1548width (mm/in) 813/32 813/32 813/32 813/32 813/32 813/32 813/32depth (mm/in) 660/26 660/26 660/26 660/26 660/26 660/26 660/26height (mm/in) 915/36 915/36 915/36 1219/48 1219/48 1219/48 1219/48

harmonizer – aVR is classified as industrial control equipment UL 508.component certification is under UL 1561 Us standards, and c22.2 no 47, canadian standards. UL file number e228073.*available in400V50hz

UTILITY PAD MOUNTTRANSFORMER LEGEND POWER

HARMONIZER

UTILITY FEED

347 / 600 V (CA)277 / 480 V (US)230 / 400 V (EU)

800 AMP

AVR

RATED AT 800A CONT.600/347V MAIN DISTRIBUTION PANEL

HVAC & FANS

LIGHTINGWAREHOUSE & WORKSHOP

208VDISTRIBUTION PANEL

300 KVA208/120VTRANSFORMER

SPARE ELEVATOR

LIGHTING

POWER

LIFESYSTEMS

TRANSFER SW

EMERGENCY GEN

800A 800A

600A

200A

400AMAIN SW. F DISCONNECT

UTILITYMETERING C/B

M

legend power systems inc.www.legendpower.comelectrical energy conservation

Single line diagram

otheR instaLLation sPLice/cUt-in Locations aRe aVaiLabLe