AC LOW VOLTAGE DISTRIBUTION CABINET DRAWOUT TYPE LOW VOLTAGE SWITCH CABINET INDOOR MOVEABLE METAL-CLAD AC SWITCHGEAR MICROPROCESSOR SYNTHESIZED OPERATION SYSTEM FOR TRANSFORMER AC METAL ENCLOSED SWITCHGEAR METAL INSIDE ARMOR SWITCH CABINE INTELLIGENT DIRECT CURRENT SCREEN WITH HIGH FREQUENT SWITCH COMBINED HIGH VOLTAGE SWITCH EUROPEAN CASE-LIKE TRANSFORM SUBSTATION AMERICAN CASE-LIKE TRANSFORM SUBSTATION