power distribution - Siemens

Busway SystemsTechnical DataTechnicalBUSWAYSYSTEMS14R, X, Z and Ohms, Voltage DropVoltage Drop - Concentrated Loads, Line-to-Line per 100 feet at 100%Bus Bar Width Ohms x 10.3 per 100 feet Rated Load, 35°C Ambient x 0.25 in. Line to Neutral Power FactorAmpere Rating (6.4mm) Thick R X Z 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0AL L-Rated 225 — 1.75 (44.5) 3.94 1.13 4.10 0.88 1.02 1.15 1.27 1.39 1.49 1.57 1.54400 — 1.75 (44.5) 4.08 1.23 4.26 1.66 1.91 2.15 2.38 2.58 2.77 2.91 2.83600 — 1.75 (44.5) 4.26 1.32 4.46 2.64 3.03 3.40 3.75 4.08 4.37 4.58 4.43800 400 2.38 (60.5) 3.42 1.06 3.58 2.82 3.24 3.64 4.02 4.36 4.67 4.90 4.741000 600 3.25 (82.6) 2.45 0.74 2.56 2.50 2.88 3.24 3.57 3.89 4.17 4.38 4.241200 800 4.38 (111.3) 1.86 0.59 1.95 2.32 2.66 2.99 3.29 3.58 3.82 4.01 3.871350 1000 5.38 (138.7) 1.39 0.24 1.41 1.50 1.81 2.10 2.39 2.67 2.93 3.17 3.251600 1200 6.50 (165.1) 1.21 0.48 1.29 2.19 2.48 2.75 3.00 3.23 3.43 3.56 3.352000 1350,1600 8.75 (222.3) 0.91 0.35 0.98 2.11 2.38 2.64 2.87 3.08 3.26 3.37 3.162500 2000 (2) 5.63 (143.0) 0.68 0.29 0.74 2.09 2.34 2.57 2.78 2.97 3.12 3.21 2.953000 2500 (2) 6.75 (171.5) 0.54 0.28 0.61 2.24 2.47 2.67 2.85 3.01 3.12 3.16 2.803200 2000 (2) 7.50 (190.5) 0.48 0.33 0.58 2.53 2.73 2.91 3.06 3.17 3.23 3.20 2.684000 3000,3200 (2) 9.00 (228.6) 0.62 0.21 0.51 2.34 2.61 2.85 3.08 3.27 3.43 3.51 3.20CU M-Rated 225 — 1.75 (44.5) 2.34 1.13 2.60 0.69 0.77 0.84 0.90 0.95 0.99 1.01 0.91400 — 1.75 (44.5) 2.44 1.13 2.69 1.26 1.40 1.52 1.64 1.74 1.82 1.86 1.69600 — 1.75 (44.5) 2.58 1.16 2.83 1.96 2.18 2.39 2.58 2.74 2.87 2.94 2.68800 400 1.75 (44.5) 2.71 1.17 2.95 2.67 2.98 3.28 3.55 3.78 3.97 4.08 3.761000 — 2.25 (67.2) 2.12 0.98 2.30 2.58 2.88 3.17 3.44 3.67 3.86 3.98 3.671200 600 2.88 (73.2) 1.66 0.77 1.83 2.56 2.85 3.11 3.35 3.56 3.72 3.80 3.451350 800 3.50 (88.9) 1.30 0.64 1.45 2.34 2.59 2.82 3.03 3.20 3.33 3.39 3.041600 1000 4.50 (114.3) 1.06 0.56 1.20 2.37 2.60 2.66 3.01 3.17 3.29 3.32 2.942000 1200,1350 6.00 (152.4) 0.77 0.44 0.89 2.27 2.48 2.50 2.83 2.96 3.05 3.07 2.66— 1600 — — — — — — — — — — — —2500 2000 8.50 (215.9) 0.55 0.35 0.65 2.15 2.34 2.50 2.64 2.75 2.82 2.81 2.393000 — (2) 4.75 (120.7) 0.49 0.27 0.56 2.07 2.28 2.46 2.62 2.76 2.86 2.89 2.543200 — (2) 5.50 (139.7) 0.44 0.30 0.53 2.33 2.51 2.67 2.80 2.90 2.96 2.93 2.444000 2500,3000,3200 (2) 6.50 (165.1) 0.36 0.15 0.39 1.76 1.97 2.17 2.35 2.51 2.63 2.71 2.495000 4000 (2) 8.50 (215.9) 0.30 0.21 0.37 2.49 2.69 2.86 3.00 3.11 3.17 3.15 2.63Notes:1. For plug-in distributed loads, divide voltage dropvalues by 2.2. To determine voltage drop line-to-neutral, multiply lineto-linevalues by 0.577.3. Actual voltage drop for different lengths and atloadings less than full rated current can be calculatedusing the formula:Vd (actual) = Vd (table) x actual load x actual length (ft)rated load 100 feet4. For 50 Hz, multiply reactance (X) by 0.85 and resistancevalues do not change. For 400 Hz, multiply reactanceby 3.75 and multiply resistance by 1.4. Calculate newvoltage drop:Vd = amps load x 3(Rcos θ + X sin θ) per 100 ft,where cos θ = Power Factor.5. For metric conversion R, X, Z values ”in Ohms permeters Line to Neutral”R x .0328X x .0328Z x .03286. For metric conversion ”Line to Line per meter at 25° Cambient in mV/A/m” (Vd 32.8) / A Divide Vd by 2 fordistributed loads.7. Voltage Drop will decrease in lower ambienttemperature. Contact Siemens for Voltage Drop inother ambient conditions.14-24Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog