EXN75T3HB

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EXN75T3HB

Schneider Electric

Low voltage transformer, DOE 2016, dry type, 3 phase, 75kVA, 480V pri, 208Y/120V sec, Al, 80C rise, Type 2

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"EXN three phase low voltage dry type distribution transformers from Square D comply with DOE energy conservation standards and Natural Resources Canada (NRCan) minimum energy efficiency levels. This transformer is a 75kVA, 480V primary (three wire), 208Y/120V secondary (four wire) with aluminum windings with a 220 insulation system design for 80 degree C temperature rise. This transformer\u2019s DOE 2016 and NRCan efficiency is a minimum of 98.60% at 35% loading and 75\u00b0C temperature. Terminals are designed to accommodate wire ranges sized for 125% of the secondary nameplate current and 250% of the primary nameplate current. The terminals allow for NEMA two hole lugs and wiring bending radius to align with the wire ranges and to allow for side and bottom access. Units are natural air cooled with exhaust vents located on the front only, allowing the transformers to be mounted with rear clearance to obstructions of 1/2 inch. Units are shipped as Type 2 for indoor installation, field convertible to Type 3R via weathershield for outdoor installation. The transformers are floor mounted but field accessories are available for wall or trapeze (ceiling) mounting. EX transformers have a low sound level, with a minimum of 3dB below NEMA Standard ST-20 requirements. Units are specifically designed to function with other Square D equipment; inrush is coordinated to meet identified breaker trip curves, and IZ levels allow for let through current to match AIR levels of panelboards. See product data sheets for these values."

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Specification	Value
Tap Loss	153 no load (core loss) \|\| 1590 load loss (coil loss)
Network Frequency	60 Hz
Primary Voltage	480 V delta
Percentage Impedance Voltage	5.05 %
Height	851 mm
Number Of Mounting Holes	4 Ø: 13 mm
[Uimp] Rated Impulse Withstand Voltage	10 kV
Primary Operational Current	90.21-90.21 A 208.18 A 75 kVA
Temperature Rise	80 °C \|\| 220 °C insulated
Degree Of Protection	UL type 2 \|\| UL type 3R, with 7400WS18M19M20M
Number Of Tap-Offs	2 2.5 % FCAN \|\| 4 2.5 % FCBN
X/R Ratio	2.36
Rated Operational Power In Va	75 kVA
Electrical Connection	4 Hole Nema Pad secondary 11.1 mm \|\| 6 Hole Nema Pad sec - XO 11.1 mm \|\| 4 Hole Nema Pad primary 11.1 mm
Phase	3 phase
Material	aluminium
Net Weight	263.08 kg
Secondary Voltage	208Y/120 V
Percentage Reactance	4.63 %
Noise Level	44 dB \|\| 6 dB NEMA ST-20
Type Of Cooling	natural convection
Efficiency	98.74 % at 35 % load factor , 75.0 °C
Mounting Support	floor \|\| floor, with 7400FMB \|\| ceiling, with 7400CMB18M19M20M \|\| wall, with 7400WMB18M19M20M
Continuous Thermal Current Rating Factor	673 16.6 % \|\| 861 25 % \|\| 1878 50 % \|\| 3574 75 % \|\| 5947 100 %
Width	764 mm
Depth	697 mm
Inrush Current	801 A
Box Number	20M
[Ipk] Rated Peak Withstand Current	4.12 kA
Range Of Product	Square D
Product Or Component Type	transformer
Transformer Type	energy efficient
Device Application	low voltage electrical distribution
Device Short Name	DOE 2016

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