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LoginExpansion units are used to accommodate the expansion and contraction of a busbar system as well as allow for building movement. They allow for a 40mm movement along the length of the busbar.
Expansion units are recommended when a straight busbar run exceeds 60m. They are installed in the centre of long busbar runs, or at the beginning of riser runs to minimise the stress on the lower section of the busbar run.
Type |
N/A Expansion Unit |
Construction Type |
N/A Single |
Application |
N/A Indoor |
Material |
N/A Painted Aluminium |
Series |
N/A HPB UL |
Mounting Type |
N/A Edge Installation |
Configuration |
N/A TPDN |
Industry Standards |
N/A UL |
Certification Marks |
N/A UL857 |
Conductor Material |
N/A Aluminium |
Ambient Temperature [Max] |
N/A 55 ºC131 ºF |
Number of Poles |
N/A 5 |
Busbar Rating |
N/A 800 A |
Frequency |
N/A 50/60 Hz |
Degree of Protection |
N/A IP55 (up to IP67 upon request) |
Conductor |
N/A 60 |
Rated Operational Voltage |
N/A 1000 V |
Rated Insulation Voltage |
N/A 1000 V |
Short Circuit Rating [6 Cycle] |
N/A 75 kA |
Phase Conductor - Cross Sectional Area |
N/A 0.59 in²360 mm² |
Neutral Conductor - Cross Sectional Area |
N/A 0.59 in²360 mm² |
Isolated Earth Conductor - 100% Earth Cross Sectional Area |
N/A 360 mm²0.59 in² |
Isolated Earth Conductor - 50% Earth Cross Sectional Area |
N/A 180 mm²0.28 in² |
Housing Ground Path Cross Sectional Area |
N/A 1880 mm²2.92 in² |
Resistance at 68°F |
N/A 2.092 mΩ/100·ft |
Resistance at 176°F |
N/A 2.628 mΩ/100·ft |
Reactance at 60Hz |
N/A 0.436 mΩ/100·ft |
Impedance at 176°F |
N/A 2.139 mΩ/100·ft |
Total Length |
N/A 118.11 in1295 mm |
Busbar Width |
N/A 5.83 in148 mm |
Busbar Height |
N/A 4.65 in118 mm |
Height |
N/A 209.8 mm |
Width |
N/A 505 mm |
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