... compatible with medium voltage synchronous motors are in the final stage of development. HARSVERT-A series of medium voltage VFD ... .Mining: mortar pumps, fans, etc5. City construction: water supply pump, compressors of large air conditioning, etcIn the above industries, large ... with plain holesGB/T 4588.2-1996 Sectional specification: single and doubel-side printed boards with plated-through holesGB/T ...