三相电压监视继电器提供三相供电监视相故障、相失衡及逆相保护，欠／过电压保护可调节的相位失衡保护可调节的欠压／过压设置可调节的跳闸延时预置的电源开启延时2CO继电器输出。型号S2VMR３系统供电电压±20%100-120v或220-240V或380-440V((3相3线)输出触点2CO相位失衡跳闸设置4%-20%可调欠压跳闸设置75-115V可调165-225V可调285-425V可调过压跳闸设置105-145V可调230-290V可调400-520V可调相故障1-10秒调节相逆反瞬时相失衡1-10秒调节欠电压（UV）1-10秒调节过电压（OV）1-10秒调节复位自动／人工重量（gms）250尺寸（mm）90×60×35SystemSupply:100-120/220-240/380-440VAC-25%+20%,48-63HzOutputRelayContacts:1CO+1CO/2COTripSettingUnderVoltagePhPhSensing:For380-440VACFor220-240VACFor100-120VAC:::285-425VAC(Variable)165-225VAC(Variable)75-115VAC(Variable)OverVoltagePhPhSensing:For380-440VACFor220-240VACFor100-120VAC:::400-520VAC(Variable)230-290VAC(Variable)105-145VAC(Variable)TripTimeDelay:1-10Sec(Variable)PoweronDelay:1-10Sec(Variable)Reset:Auto/ManualResetWeight:110gms.(Approx.)Dimensions(mm)Overall(LxWxD):90x35x60Mounting(LxW):35mmrailMountingNote:WherevernotspecifiedContactRating:5A@230VAC(resistive))