求翻译：调压装置：即分接开关，分为无励磁调压和有载调压。是什么意思？

Surge devices: the tap, divided into no-load excitation voltage regulation and voltage regulation.

Pressure-regulating devices: namely, the switch, sub-divided into no excitation voltage regulators and-carrier.

All has the corresponding specification to the different type transformer, available corresponding technical parameter expression.If the power transformer main technique states the parameter to include: Rated power, rated voltage and ratio-voltage, nominal frequency, the operating temperature rank,

Regulating device: tap switch, there are no excitation voltage and tap.

Regulating device: tap switch, there are no excitation voltage and tap.