The system parameters are the following: i) single-phase grid voltage at 127 V, 60 Hz; ii) grid characteristic inductance ([L.sub.S]) is 500 [micro]H, which yields a weak power grid with a short-circuit power equal to 10 p.u.; iii) induction motor is rated at 460 V, 60 Hz, 10 kW and 1760 rpm; output step-up three-phase transformer
of delta-delta type rated at 220 V//460 V, 25 kVA.
In addition, inrush current of three-phase transformer
is also related to its wiring methods .
In most countries, the use of three-phase transformer
Other donations include $10,000 from ExxonMobil, $8,000 from the Louisiana Construction Education Foundation for welding equipment and a three-phase transformer
The device for identifying the clock-hour figure of the vector group, for the three-phase transformer
In addition, the lead set used with the MTO300 series instruments is the same as that used with Megger's three-phase transformer
turns ratio test sets, which makes it possible to perform both resistance and turns ratio tests after making just one set of connections to the transformer.
A grounded system is just what the name implies: the central (neutral) point of the three-phase transformer
feeding the system is connected to earth ground (Fig.
Feeding diagram of the traction power supply of single-phase current using three-phase transformer
connected according to the scheme Y/[DELTA]-11
Other topics include magnetic cores, transformer design tradeoffs, alternating current inductor design, three-phase transformer
design, designing current transformers, and planar transformers and inductors.
In this section, for investigation of inrush current reduction ratio, a three-phase transformer
consisted of single-phase transformers is considered.