phase-comparison busbar diffrential protection  比相式母线差动保护

ac nominal phase-phase potential transformer  交流标定相-相检测变压器

ac phase-phase  交流相-相

amplitude- phase protection  幅相保护

automatic phase comparison circuit  自动相位比较电路

Current Phase Comparison  电流相位比较

different frequency phase comparison  异频鉴相

digital phase comparison  数字比相

frequency domain phase comparison  频域比相

height finding by phase comparison  比相测高

high phase comparison frequency  高鉴相频率

Incomplete Phase Protection  非全相保护

incomplete phase protection device  非全相保护

judgement of phase comparison  比相判据

Lack-phase Protection  缺相保护

Lost phase protection  缺相保护

multicell phase comparison  多基线比相

multiplex phase-comparison type  综合比相

NON-THREE-PHASE PROTECTION  非全相保护