Speedfax 2017

Sentron Busway Systems
Technical Data
Revised on 04/30/18
Technical
Temperature Rise Curves
Aluminum Bus Bar
Sentron Busway
Temperature Rise Curves
Copper Bus Bar
Sentron Busway
Amperage
Amperage
Temperature Rise ˚C
Temperature Rise ˚C
R, X, Z and Ohms, Voltage Drop
Voltage 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 Factor
Ampere Rating (6.4mm) Thick R X Z 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
AL L-Rated c
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 1.54
400 — 1.75 (44.5) 4.08 1.23 4.26 1.66 1.91 2.15 2.38 2.58 2.77 2.91 2.83
600 — 1.75 (44.5) 4.26 1.32 4.46 2.64 3.03 3.40 3.75 4.08 4.37 4.58 4.43
800 400 2.38 (60.5) 3.42 1.06 3.58 2.82 3.24 3.64 4.02 4.36 4.67 4.90 4.74
1000 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 4.24
1200 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 3.87
1350 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 3.25
1600 1200 6.50 (165.1) 1.21 0.45 1.29 2.19 2.48 2.75 3.00 3.23 3.43 3.56 3.35
2000 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 3.16
2500 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 2.95
3000 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 2.80
3200 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 2.68
4000 3000,3200 (2) 9.00 (228.6) 0.46 0.21 0.51 2.34 2.61 2.85 3.08 3.27 3.43 3.51 3.20
CU M-Rated c
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 0.91
400 — 1.75 (44.5) 2.44 1.13 2.69 1.26 1.40 1.52 1.64 1.74 1.82 1.86 1.69
600 — 1.75 (44.5) 2.58 1.16 2.83 1.96 2.18 2.39 2.58 2.74 2.87 2.94 2.68
800 400 1.75 (44.5) 2.71 1.17 2.95 2.67 2.98 3.28 3.55 3.78 3.97 4.08 3.76
1000 — 2.25 (67.2) 2.12 0.89 2.30 2.58 2.88 3.17 3.44 3.67 3.86 3.98 3.67
1200 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 3.45
1350 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 3.04
1600 1000 4.50 (114.3) 1.06 0.56 1.20 2.37 2.60 2.82 3.01 3.17 3.29 3.32 2.94
2000 1200,1350 6.00 (152.4) 0.77 0.44 0.89 2.27 2.48 2.66 2.83 2.96 3.05 3.07 2.66
— 1600 — — — — — — — — — — — —
2500 2000 8.50 (215.9) 0.53 0.35 0.65 2.15 2.34 2.50 2.64 2.75 2.82 2.81 2.39
3000 — (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 2.54
3200 — (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 2.44
4000 2500,3000,3200 (2) 6.50 (165.1) 0.39 0.26 0.47 2.50 2.71 2.89 3.04 3.16 3.23 3.21 2.71
5000 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 2.63
15
BUSWAY SYSTEMS
Notes:
For plug-in distributed loads, divide voltage drop
values by 2.
To determine voltage drop line-to-neutral, multiply lineto-line
values by 0.577.
Actual voltage drop for different lengths and at
loadings less than full rated current can be calculated
using the formula:
Vd (actual) = Vd (table) x actual load x actual length (ft)
rated load 100 feet
For 50 Hz, multiply reactance (X) by 0.85 and resistance
values do not change. For 400 Hz, multiply reactance
by 3.75 and multiply resistance by 1.4. Calculate new
voltage drop:
Vd = amps load x E3(Rcos θ + X sin θ) per 100 ft,
where cos θ = Power Factor.
For metric conversion R, X, Z values ”in Ohms per
meters Line to Neutral”
R x .0328
X x .0328
Z x .0328
For metric conversion ”Line to Line per meter at 25° C
ambient in mV/A/m” (Vd 32.8) / A. Divide Vd by 2 for
distributed loads.
Voltage Drop will decrease in lower ambient
temperature. Contact Siemens for Voltage Drop in
other ambient conditions.
Siemens Industry, Inc. SPEEDFAX Product Catalog 15-7