In practice, the pilot and phased conversion methods are more relevant today.
2.
This motor-generator combination can provide a frequency changer function as well as phase conversion, but requires two machines with all their expenses and losses.
3.
The Securities Industry Association, whose members include Wall Street investment banks, brokerage firms and mutual fund companies, said yesterday that it would ask securities regulators to approve a three-phase conversion process that would begin Monday, July 3, with a one-month pilot test involving about 40 securities.
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