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Powersmiths

Powersmiths K-Star 300KVA Dry-Type Transformer 480V Delta to 208Y/120V 3-Phase

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SKU:
52934
MPN:
KStar-300-0-480-120/208-S
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
1,915.00 LBS
Shipping:
Calculated at Checkout
  • Powersmiths K-Star 300KVA dry-type transformer – 3/4 front-left view showing ventilated top grille and rating plate labels
  • Powersmiths K-Star 300KVA transformer – straight front view showing ventilated top, rating plate, and UL/CSA labels on enclosure
  • Powersmiths K-Star transformer nameplate closeup – Power Magnetics rating plate showing KVA, phase, voltage, impedance, tap voltages, and winding diagrams
  • Powersmiths K-Star 300KVA transformer – interior front view with enclosure panels open showing three wound transformer cores and terminal bus bars
  • Powersmiths K-Star transformer – close-up of three wound coil assemblies with brown/yellow insulation wrap and white inter-winding jumpers
  • Powersmiths K-Star transformer – detailed view of transformer coil stacks showing laminated core sections and copper windings with insulation tape
  • Powersmiths K-Star transformer – HV terminal bus bar closeup showing H1, H2, H3 terminal blocks with copper conductors and colored phase tape
  • Powersmiths K-Star transformer – LV terminal bus bar showing X0, X1, X2, X3 terminals with multi-conductor copper cables attached and green ground wire
  • Powersmiths K-Star transformer – interior lower-left section showing GND terminal block and conduit entrance opening with green ground conductor routed
  • Powersmiths K-Star transformer – front label panel showing K-Star brand logo, Powersmiths name and phone number, rating plate, and UL/CSA certification labels
  • Powersmiths K-Star 300KVA transformer – rear view showing smooth steel enclosure panels with mounting feet and ventilation grille at top
  • Powersmiths K-Star transformer – side view showing full enclosure height with two square knockout holes where conduit boxes were removed
  • Powersmiths K-Star transformer – side panel view showing two open square conduit box cutouts at the lower portion of the enclosure
  • Powersmiths K-Star transformer – field wiring label closeup reading 'For field connections, use wires suitable for at least 75°C (167°F), use CU or AL wire'
$4,500.00
Was: $9,000.00
Current Stock: 1

Sold Out

Description

Powersmiths K-Star 300KVA Dry-Type Transformer 480V Delta to 208Y/120V 3-Phase

Step-down transformer converting 480V delta primary to 208Y/120V secondary for three-phase power distribution. Dry-type construction with K-Star (zig-zag) winding configuration and 4-tap adjustment capability.

Specifications & What's Included

  • 300 KVA capacity, 60 Hz, three-phase
  • Primary: 480V Delta; Secondary: 208Y/120V
  • Impedance: 7.1%; Temperature rise: 150°C
  • Class AA insulation; UL/CSA certified
  • 4 taps at 2.5% each; 55 dB sound level
  • Ventilated NEMA Type 1 enclosure; copper/aluminum compatible
  • Made in Gardena, CA; manufactured December 1998

Applications

Industrial and commercial three-phase power distribution, stepping down utility or generator voltage to standard branch circuit levels. Commonly used in manufacturing facilities, data centers, and large commercial buildings for load center and panel-fed distribution systems. Dry-type design suits indoor installations without fire-rating requirements.

Condition: Used
This Powersmiths K-Star 300KVA dry-type transformer has been inspected and appears to be in good condition. It was pulled from active service and has not been bench-tested at our facility, though it was in use and functional when removed. The copper cables at the HV and LV terminals have been cut and left in place to show the original wiring configuration. The conduit boxes on the side panel were removed during deinstallation, leaving two open square holes. The bottom ventilation grate is bent, though this is not visible in the photos. The enclosure shows minor scuffs and scratches consistent with removal and prior use. Please view our photo set and contact us if you have any questions.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Powersmiths
Model:
KStar-300-0-480-120/208-S
MPN:
KStar-300-0-480-120/208-S
Secondary Model:
TCRS28245
Type:
Dry-Type Step-Down Transformer
SKU:
52934
Power Rating (kVA):
300 KVA
Phase:
Three Phase
Primary Voltage:
480V Delta
Secondary Voltage:
208Y/120V
Frequency:
60 Hz
Winding Configuration:
Zig-Zag (K-Star)
Impedance:
7.1%
Temperature Rise:
150°C
Number of Taps:
4 taps at 2.5% each
ES Noise Attenuation:
65 dB
Sound Level:
55 dB
Style:
TCRS28245
Insulation Class:
Class AA
Enclosure:
Ventilated (NEMA Type 1)
Wire Compatibility:
Copper (CU) or Aluminum (AL)
Wire Temperature Rating:
75°C (167°F) minimum
Certifications:
UL, CSA
Manufacturer:
Power Magnetics (an SPD Technologies Company)
Country/Region of Manufacture:
United States (Made in Gardena, CA)
Manufacture Date:
December 1998
Condition:
Used – Pulled from Working Environment
Seller Notes:
Copper cables removed at terminals but left in place; conduit boxes removed leaving two square holes on side; bottom grate bent.
Condition Notes:
Powersmiths K-Star 300KVA 3-phase dry-type transformer. Inspected, pulled from active service, not bench-tested. Copper cables left at terminals; conduit boxes removed leaving two square holes. Bottom grate bent. Minor scuffs and scratches.
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kVA Rating:
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Phase:
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Primary Voltage:
480V Delta
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Frequency:
60 Hz
Insulation Class:
Class AA
Insulation Temperature Rise:
150°C
Impedance:
5.5%
Date Code:
M9994
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432V – 504V (tapped)
Certifications:
UL Listed, UL Listed 4703
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UL Listed – Class CTL Panelboard, No. FZ 254805
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Customer Marking:
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United States
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Condition:
Used – Pulled from Working Environment
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