Energies have significant cost in industrial electric motors daily operation of a company, thanks to the development of AC drives, which are being treated as one of the most important electric products by most institutions in reducing AC motor energy consumption. Industrial AC motors consume a mass of electricity, estimated to be approximate two-thirds of the whole system's usage. For example, in a water pump system, the ac motor may just cost a few hundred dollars, but will consume tens of thousands of dollars of electricity cost over its service life. AC drives can be used for reducing energy costs by controlling the motor speed.

220V Single Phase to Three Phase Drives

Model No.	Power (kW)	Current (A)	Dimensions (mm)	G.W (kg)
GK3000-2S0004	0.4	3	142*85*113	1.2
GK3000-2S0007	0.75	4.7
GK3000-2S0015	1.5	7.5
GK3000-2S0022	2.2	10	184*98*135	2
GK3000-2S0037	3.7	17	230*155*164	6.5

380V Three Phase Drives

Model No.	Power (kW)	Current A)	Dimensions (mm)	G.W (kg)
GK3000-4T0007G	0.75	2.5	184*98*135	2
GK3000-4T0015G	1.5	4
GK3000-4T0022G	2.2	6	230*118*153	3
GK3000-4T0037G	4	9.6
GK3000-4T0055G	5.5	14	280*181*183	6.5
GK3000-4T0075G	7.5	17
GK3000-4T0110G	11	25	339*231*214	10.5
GK3000-4T0150G	15	32
GK3000-4T0185G	18.5	39	423*258*230	17.5
GK3000-4T0220G	22	45
GK3000-4T0300G	30	60	500*296*276	30
GK3000-4T0370G	37	75
GK3000-4T0450G	45	91	560*320*269	40
GK3000-4T0550G	55	112
GK3000-4T0750G	75	150	618*398*306	50
GK3000-4T0900G	90	176
GK3000-4T1100G	110	210	760*485*324	85
GK3000-4T1320G	132	253
GK3000-4T1600G	160	304	1440*600*399	180
GK3000-4T1850G	185	355
GK3000-4T2000G	200	380
GK3000-4T2200G	220	426
GK3000-4T2500G	250	474
GK3000-4T2800G	280	520	1500*930*515	470
GK3000-4T3150G	315	600
GK3000-4T3550G	355	650
GK3000-4T4000G	400	750

Some tips in selecting an AC drive
All the technical & financial matters are all important ones in selecting an AC drive, but the most important is before all to clearly understand what will be the application and process where will be the AC drives, note that you can have high quality drives if you use them for fan you'll lose money. At the opposite if you take a fan-dedicated drive for roller mill application it will not work. So first thing is to define clearly application and process because it will tell you what you need to control as much as possible and will give you some idea where to go. To define the best AC drives, before define at best your need and regulation type, for big application like tunnel boring machine is efficiency and torque regulation, for pipelay system is efficiency, torque and speed regulation with master and several slave controls.... So clearly first application and regulation, then you'll find easily the ac drives type.

Some manufacturers make ac drives with simple programming. It is easy to code in so much application specific capabilities in the chips coming out now.
Once you have made a purchase you have to live with it. All manufacturers will give you some sort of technical data and promise a long life for their drives. But what is a long life for an electronic piece? Look at the installed components and line them up in order of time to fail. You will have capacitors first every time. They will need to be replaced at least once if you want an AC drive to last more than 10 years.