单盘多相电表 single-disc polyphase meter

多相电度表 polyphase meter ; polyphase kilowatt-hour meter

多相电流表 polyphase meter

多雷托雷相限电表 Dolezalek quadrant electrometer

多相电能表 Heterogeneous electric energy meter

三相多功能电表 Three-phase multi-functional meter