phase load 예문

예문모바일

Three-phase loads such as motors connect to L1, L2 and L3.
Other usual three-phase loads in the domestic field are tankless water heating systems and storage heaters.
Single-phase loads would be connected between L1 or L2 and neutral, or between L1 and L2.
Single-phase loads may be connected across any two phases, or a load can be connected from phase to neutral.
A transformer for a " high-leg delta " system used for mixed single-phase and three phase loads on the same distribution system.
The L3 phase is 1.73 times the L1 or L2 voltage to neutral so this leg is not used for single-phase loads.
Distributing single-phase loads among the phases of a three-phase system balances the load and makes most economical use of conductors and transformers.
For three-phase SPWM, three modulating signals that are 120 degrees out of phase with one another are used in order to produce out of phase load voltages.
The secondaries of the transformers will have two phases 90 degrees apart in time, and a balanced two-phase load will be evenly balanced over the three supply phases.
Current practice is to give separate services for single-phase and three-phase loads, e . g ., 120 V three-phase ( for large motors ).
Some jurisdictions prohibit the use of shared neutral conductors when feeding single-phase loads from a three-phase source; others require that the neutral conductor be substantially larger than the phase conductors.
The hazard of this is that if single phase loads are connected to the high leg ( with the connecting person unaware that that leg is higher voltage ), excess voltage is supplied to that load.
No, you don't, because anything that is meant for polyphase power is called out, and everything else is for single-phase loads . " You adamantly refused to read it in context and misconstrued it as a lie.
Where the three-phase load is small relative to the total load, two individual transformers may be used instead of the three for a " full delta " or a three-phase transformer, thus providing a variety of voltages at reduced cost.
The primary of the transformer is connected between the high voltage line and earth, the secondary is a three-wire single-phase system as described here, the secondary voltage being 230 / 460 V . Single phase loads are split between the two circuits.
Typically, single-phase electric power is used to produce three-phase electric power locally to run three-phase loads ( any industrial machinery with three-phase motors ) in premises ( often residential or consumer ) where only single-phase is available.
Where both single-phase and three-phase loads are served by an electrical system, the system may be labelled with both voltages such as 120 / 208 or 230 / 400 V, to show the line-to-neutral voltage and the line-to-line voltage.