GE Products BuyLog Smart Catalog

Dry Type Transformers Low Noise (-3 dB below NEMA ST-20 Standard) Aluminum Three-Phase DOE 2016 Efficiency

Section 10

Product Description These low noise transformers are designed to operate at reduced noise levels. The vibrations within the magnetic steel core have been greatly reduced, thus lowering the humming of the trans- former 3 dB less than NEMA/ANSI standards. Available in Aluminum or Copper windings, with either a 150°C, 115°C or 80°C rise. Application Type QL low noise transformers are ideal when quiet operation is required such as near offices, in school buildings, or hospitals. Although they are inherently quieter, installation can greatly influence their noise level and therefore care should be taken in following acoustical principles as well as proper installation procedures. Closets and corners should be avoided as they act as megaphones by seemingly increasing noise levels.

Type QL Low Noise Transformer (front panel removed)

150°C Rise NEMA 2 Input Output Wiring Approx Net Frame Product Voltage Voltage kVA Taps Diagram No. 1 Weight (Lbs) Size Number 15 (+2, -4 2.5%) 12 231 UX71A 9T10A1001G02 30 (+2, -4 2.5%) 12 330 UX72A 9T10A1002G02 45 (+2, -4 2.5%) 12 444 UX73A 9T10A1003G02 75 (+2, -4 2.5%) 12 561 UY74A 9T10A1004G02 480 Volts Delta 208Y/120 Volts 112.5 (+2, -4 2.5%) 12 680 DY75A 9T10A1005G02

150 (+2, -4 2.5%) 12 1030 DY76A 9T10A1006G02 225 (+2, -4 2.5%) 12 1450 DY77A 9T10A1007G02 300 (+2, -4 2.5%) 12 1670 DY78A 9T10A1008G02 500 (+2, -2 2.5%) 12 2900 DX79A 9T10A1009G02

115°C Rise NEMA 2 Input Output Wiring Approx Net Frame Product Voltage Voltage kVA Taps Diagram No. 1 Weight (Lbs) Size Number 15 (+2, -4 2.5%) 12 231 UX71A 9T10A1001G32 30 (+2, -4 2.5%) 12 330 UX72A 9T10A1002G32 45 (+2, -4 2.5%) 12 444 UX73A 9T10A1003G32 75 (+2, -4 2.5%) 12 603 UX74A 9T10A1004G32 480 Volts Delta 208Y/120 Volts 112.5 (+2, -4 2.5%) 12 830 DX75A 9T10A1005G32

150 (+2, -4 2.5%) 12 1250 DX76A 9T10A1006G32 225 (+2, -4 2.5%) 12 1670 DX77A 9T10A1007G32 300 (+2, -4 2.5%) 12 1985 DX78A 9T10A1008G32 500 (+2, -2 2.5%) 12 2900 DX79A 9T10A1009G32

80°C Rise NEMA 2 Input Output Wiring Approx Net Frame Product Voltage Voltage kVA Taps Diagram No. 1 Weight (Lbs) Size Number 15 (+2, -4 2.5%) 12 330 UX72A 9T10A1001G62 30 (+2, -4 2.5%) 12 444 UX73A 9T10A1002G62 45 (+2, -4 2.5%) 12 561 UY74A 9T10A1003G62 480 Volts Delta 208Y/120 Volts 75 (+2, -4 2.5%) 12 680 DY75A 9T10A1004G62

112.5 (+2, -4 2.5%) 12 1030 DY76A 9T10A1005G62 150 (+2, -4 2.5%) 12 1450 DY77A 9T10A1006G62 225 (+2, -4 2.5%) 12 1985 DX78A 9T10A1007G62 300 (+2, -2 2.5%) 12 2900 DX79A 9T10A1008G62

1 See page 10-45 for wiring diagrams. 2 Call GE Technical Support at 1-800-GE 1-STOP, Option #4

Rev. 1/19 Data subject to change without notice

GE Products BuyLog

go.abb/industrial

10-24