DTHB04404S Drive Isolation Transformer Three Phase 60 Hz 575 Delta Primary Volts 460Y/266 Secondary Volts

DTHB04404S

575 Delta Primary Volts - 460Y/266 Secondary Volts - All Acme Drive Isolation Transformers (DITs) above 7.5kVA are wound with strip windings to ensure the lowest possible eddy current losses. A three leg wound core is used by all our DITs. This exceptional design has very low losses and silent operation. Both these features combine to significantly reduce losses and operation costs when compared with other kinds of constructions. All Acme DITs including the 220kVA and up to have copper terminations. The transition from aluminum strip coil conductors to copper conclusions is actioned by a bonding procedure known as "Koldwelding" This process was used by Acme for over 25 years to supply a trouble-free, permanent bonding of both metals.

Type 2 Enclosure without weather shield.
3-Phase 60 Hertz
180°C and 220°C insulating material systems
Acme’s reinforced center assemblies accentuate quiet operation
Nominally 6% impedance
Designed for use with DC drives, flexible frequency or AC
Total capability taps are featured on all units. On 27 through 660 kVA units, taps are 2-2 1/2% ANFC and 2-2 1/2% BNFC.
All drive systems that are standard are covered by complete range of kVA evaluations
Ample wiring compartment for easy cable entry
Optional wall mounting brackets for certain sizes
Anxiety alleviation: Acme uses strip conductors (above 7.5 kVA) instead of wire for a DIT string that readily accommodates the acute electric and mechanical stresses found in today’s AC & DC motor drives. The inherent outstanding line isolation of these transformers is further improved with the extra protection of Acme’s Electrostatic Shield — .
Lower declines: The harmonic currents generated by AC & DC drives increase eddy current losses (heat) in transformer windings. The thicker the greater the reductions, the winding conductor. Acme uses one turn per layer of thin strip conductor which supplies lower eddy current losses than similar wire wound units. Declines that are lower = cooler operation and longer transformer life.
Reduced short circuit forces: Strip windings minimize axial short circuit forces that can cause mechanical displacement of the windings under fault conditions. For additional protection all layouts 7.5 kVA and above use primary and secondary coils of equivalent axial length. This characteristic tends to negate axial short circuit forces, further enhancing transformer life expectancy.
Building, are of strip wound.