75 kVA Dry Type Distribution Transformer NMK075KB

Build It

Sale Price: $2,130.00
List Price: $2,787.00

Specifications

Dry Type Distribution Transformers:

  • Ratings: 15 to 45 kVA and 75 to 750 kVA
  • Voltage group: 600 volts and under
  • Frequency: 60Hz
  • Designed with a heavy duty, ventilated NEMA Type 3R enclosure (Optional NEMA 4, 4X and 12)
  • Insulation system: 220 C° (150 C° rise) / options available for copper
  • Single-phase and three-phase configurations available
  • UL listed - File: E112313
  • CSA certified - File: LR3902
  • Neutral: Neutral terminal for field connection (on applicable units)
  • Custom sizes, ratings and styles available upon request

Standard Design

  • Enclosure type: Heavy Duty NEMA Type 3R (optional NEMA 4, 4X, and 12 available)
  • Enclosure finish: ANSI 61 GREY, UL50
  • Termination: Front accessible separate high and low voltage terminals with connectors.
  • Conduit Knock-Outs: Standard on units 45 kVA and below, and on 75 kVA & 150 kVA units.
  • Mounting: Floor or wall/ceiling mounting available.
  • Sound level: Meets NEMA ST-20 standards (optional low noise units available)

Sizing Help

Sizing Dry Type Distribution Transformers for Three Phase Loads:

1. Determine the load by getting the following information from equipment nameplates or instruction manual.

  • Voltage required by load.
  • Amperes or kVA required by load.
  • Frequency in Hz (cycles per second).
    The frequency of the electrical load MUST match the line supply.
  • Verify load is designed to operate on three phase.

2. Determine the supply voltage.

  • Voltage of supply (source).
  • Frequency in Hz (cycles per second).
    The frequency of the line supply MUST match the electrical load.

3. Select a transformer with a standard kVA capacity equal to or greater than that needed to operate the load.

  • Primary taps are available on most models to compensate for line voltage variations.
  • When load ratings are only available in amperes, the following formula may be used to determine
    proper kVA size for the required transformer:

    Three Phase kVA = Volts x Amps x 1.73
                                              1000