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."
| 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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