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75 kVA 240/480 Volt to 120/240 Volt Single phase Isolation Transformer SA75L-K/Z3

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Availability: NOT in stock. Current lead time to manufacture: 5-6 weeks

US$ 5,866.00

Quick Overview

Catalog No.: SA75L-K/Z3
Isolation Transformer 75 kVA • Single Phase • Primary: 240/480 Volt • Secondary: 120/240 Volt
Conductor: Aluminum. • Frequency 60 Hz.
+US$ 560.00
US$ 5,866.00


Single phase Isolation Transformer SA75L-K/Z3 has primary and secondary windings that are physically separated from each other. It allows AC power to be taken from one device and fed into another without electrically connecting the two circuits. The transformer blocks transmission of DC currents from one circuit to the other, but allow AC signals to pass, and also blocks interference caused by ground loops.

 Isolation Transformer general dimensions

Preliminary General Drawing. (Dimension, inch).

*All information and images presented here is based on preliminary data or design and may be changed without prior notice.
Request Drawing Proof to confirm dimensions from Optional Feature tab, if it is critical.

Isolation Transformer SA75L-K/Z3 Winding Schematics:


II Single phase connection

Full Specification

Catalog No. SA75L-K/Z3
Product Type Isolation Transformer
Phase Single
Power Rating 75 kVA
Frequency, Hz 60
Vector Group II
Primary voltage 240/480 Volt
Primary Max Current, Amps 312.5A at 240 Volt or 156.2A at 480 Volt
Primary Terminals H1-H4, Interconnect H1-H3 and H2-H4 for Lower Voltage, or for Higher Voltage: X2 to X3
Primary Terminal Lugs 2/0-6 AWG
Primary Voltage Taps none
Secondary Voltage 120/240 Volt
Secondary Max Current, Amps 625.0A at 120 Volt or 312.5A at 240 Volt
Secondary Terminals X1-X4, Interconnect for Lower Voltage: X1 to X3 and X2 to X4, or for Higher Voltage: X2 to X3
Secondary Terminal Lugs 2 of 600MCM
Winding Conductor Aluminum
Temperature Rise, °C 150
Insulation Class 220 (R)
Insulation Level, (B.I.L), kVA 10
Efficiency at 35% Load, % 98.81
ANSI/IEEE Impedance, % 5.0-6.0
Sound Level, dB 50
Standards, Certifications, Compliances: Efficiency compliance: CANADA: SOR/DORS/2018-201 (NRCan 2019). CSA: CSA C802.2-18.,
USA: DOE 10 CFR PART 431:2016-01 (DOE 2016)., CSA Standard C22.2. No.47 Air Cooled Transformers (Dry Type)., CSA certified. File No. LR34493
Seismic Qualified SDS=1.60g 2/h=1.0 OSHPD OSP-0109-10 for USA zone 4 and Canada zone 6.
UL Listed. File No.E108255., ISO9001 Quality Certification.
Enclosure Type Nema 3R. General purpose indoor ventilated steel enclosure suitable for dry locations. Sprinkler Proof when angle between sprinkler and opening does not exceed 45° (IP14). FINISH - Polyester powder coat.
Weight, Lbs 450.0
Country of Manufacture Canada

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