From Power Quality in Power Systems and Electrical Machines

A5.1 THE 9 kVA THREE-PHASE TRANSFORMER BANK

A Y Y connected three-phase transformer bank with 416/416 V of rated line-to-line voltages consists of three single-phase transformers. The type numbers of the three single-phase transformers are J7065, J7610, and J7065 (bank #1), and the nameplate data are

Powerformer

Dry-type transformer

CAT. NO.: 211-101

3 kVA, single-phase, 60 Hz

High voltage: 240/480 V

Low voltage: 120/240 V

A5.2 THE 4.5 kVA THREE-PHASE TRANSFORMER BANK #1

Single-phase transformers with the nameplate data listed in Section A5.1 are used in transformer bank #1 and are connected in such a way that the rated line-to-line voltages are 240/240 V. Only the two high-voltage windings of each single-phase transformer are employed as primary and secondary, and the rated apparent power of the three-phase transformer bank is therefore 4.5 kVA.

A5.3 THE 4.5 kVA THREE-PHASE TRANSFORMER BANK #2

Single-phase transformers with the nameplate data listed in Section A5.1 having the type numbers J7605, J7606, and J7605 are used in transformer bank #2, and are connected in such a way that the rated line-to-line voltages are 240/240 V. Only the two high-voltage windings of each single-phase transformer are employed as primary and secondary, and the rated apparent power of the three-phase transformer bank is therefore 4.5 kVA.

A5.4 THE 15 kVA THREE-PHASE TRANSFORMER BANK

The 15 kVA, 240/240, ? ? connected bank consists of three 5 kVA...


Products & Services
Single Phase Transformers
Single-phase transformers output single-phase AC power, typically while stepping-up or stepping-down the voltage between two circuits.
Distribution Transformers
Distribution transformers are pole-type transformers that supply relatively small amounts of power to residences. They are used at the end of an electrical utility’s delivery system.
Power Transformers
Power transformers convert power-level voltages from one level or phase configuration to another.  They can include features for electrical isolation, power distribution, and control and instrumentation applications.
Three Phase Transformers
Three phase transformers are designed to supply electric power to three-phase systems.
Harmonic Mitigating Transformers
Harmonic mitigating transformers use phase-shifting, electromagnetic flux cancellation, and source impedance to reduce harmonic currents in electrical distribution systems.

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