Buck-boost transformers are typically available in sizes up to about ___ kVA.
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Loads at the end of a long line often suffer from low voltag…
Loads at the end of a long line often suffer from low voltage during peak load periods.
Buck-boost transformers should be used to correct a voltage…
Buck-boost transformers should be used to correct a voltage drop when the load fluctuates.
The entire ___ of an autotransformer should be designed with…
The entire ___ of an autotransformer should be designed with the insulation level required for the highest voltage expected.
In a buck-boost transformer, the voltage across the primary…
In a buck-boost transformer, the voltage across the primary should never be allowed to exceed the rating of the coils.
The primary and secondary windings can both be tapped to all…
The primary and secondary windings can both be tapped to allow an autotransformer to operate as a step-up transformer or a step-down transformer.
The power rating of a single-coil autotransformer is ___ the…
The power rating of a single-coil autotransformer is ___ the rating of the individual windings of an equivalent two-winding transformer.
___-connected transformers are not permitted to be installed…
___-connected transformers are not permitted to be installed on the load side of any system grounding connection.
Buck-boost transformers should not be used to buck or boost…
Buck-boost transformers should not be used to buck or boost three units in a wye for creating a 3-phase, 4-wire wye circuit from a 3-phase, 3-wire delta circuit.
A buck-boost transformer should not be used to buck or boost…
A buck-boost transformer should not be used to buck or boost a source feeding ___ loads.