JNHI Medium Voltage Drive
14Pages

TECO ELECTRIC & MACHINERY CO., LTD. 10F, No. 3-1, Yuan Cyu St., Nan-Kang District, Taipei 115, Taiwan Specifications covered in this brochure may be subject to change without notice. GJ-73-00 201 4-01 -1 5 Medium Voltage Drive

Product Features F.l. 30-pulse waveform of input voltage F.2. waveform of output line-voltage High Quality Power Input By phase shifting of the secondary winding and multi- pulse diode rectifier, isolated powers can be acquired and supplied for power cells. (30/36 pulses for 6kV, 54 pulses for lOkV) By using the technique of multi-pulse rectifier, the harmonic current could be eliminated In Figure 1, the harmonic distortion of JNHI 30-pulse total current in the case of typical power impedance is 1.00% only, the corresponding voltage distortion is 1.00% only. The Features of Nearly Perfect...

Product Structure Transformer Cabinet Isolated Transformer: Suppling indepent phase-shift power for power cells from secondary multi-winding greatly improve the current waveform of side network, and reduce the harmonic pollution of the grid network. Cooling Blower of Transformer : Depending on different power to configure corresponding dry-type transformer cooling blower on the top of the cabinet. Power Cell Cabinet Control Section Controller : Space vector PWM control, collecting and dealing with signals by fiber optic cable to communicate with power cells, completely electric isolated....

JNHI MV VFD adopts AC-DC-AC mode, the main circuit switch component is IGBT. JNHI VFD adopts power cells in series and overlapping method, takes full advantages of the mature technology, thus Main Circuit Topology Diagram 3.3kV series:9 power cells, 3 cells in each phase, three phase Y connected. 6kV series: 15 or 18 power cells, 5 or 6 cells in each phase,three phase Y connected. lOkV series:27 power cells, 9 cells in each phase, three phase Y connected. Isolated transformer Input three-phase phase-shift secondary winding Voltage Overlapping Diagram JNHI MV VFD has several power cells...

Achievement of ideal operation patterns • Because the airflow (flow rate) is controlled directly by the drive output frequency, with none of the pressure loss by dampers (valves), the ideal operation pattern • The machine can be started and stopped frequently. • With speed search function, operation can be smoothly restarted even when fans are coasting. • Minimum frequency setting function prevents pumps from failing to supply, meaning that stable supply can Energy-saving operation • Switching operation from conventional damper (valve) control using a commercial power supply to frequency...

Drive Capacity Selection Examination of capacity for blower motor When commercial power operation method is changed to speed control method, the applicaPle drive capacity is determined as follows. Example: Motor rating: 500 kW, 4P, 3 kV at 50 Hz Assuming that: - Motor rated current: 120 A - Maximum value of actual operation load current: 95 A For this applicaPle drive capacity, rated current 96A (nominal capacity 400 kW) should be selected. (96 A > 95 A) The detailed drive capacity selection shall condiser the application and motor selection. Please consult with your distributor if needed....

START IP CABINET TRAXSFQfBER CABINET 3.3KV STANDARD VFD MODEL SELECTION-ASYNCHRONOUS MOTOR/SYNCHRONOUS MOTOR >S Refer to instruction manual for details of more cabinets and specifications.

TRANSFORMER POWER CELL CONTROL CABINET CABINET CABINET CONTROL POWER CELL CABINET TRANSFORMER CABINET CABINET 16I0(START CABMET BASE WITH) 1650 START CAHCHT WIDTH T685 < iJAWT CAflNET fRONT TO BACK MAX »TH) HOOIPOKRC L CABMET TRAHSFOWP CABINET TRANSECRitER CABMgT TOTAL MOTH) 6.6KV STANDARD VFD MODEL SELECTION-ASYNCHRONOUS MOTOR/SYNCHRONOUS MOTOR >K Refer to instruction manual for details of more cabinets and specifications.

I ?KV STANDARD VFD FOR ASYNCHRONOUS MOTOR/SYNCHRONOUS MOTOR S*S Refer to instruction manual for details of more cabinets and specifications. General Wiring Diagram System diagram three-phase HV input power analog output frequency I (Hv A '" analog output frequency —(Hz)- — — -3 analog output frequency —(A/ —"5 analog output frequency level positive direction start /stop/ pulse start level reverse direction start /stop/ pulse stop emergency stop single phase AC220V control power three-phase induction motor FATAL FAULT, high voltage indicator fault indicator running indicator remote control...

Executing Standards Installation & Transportation Cabinets Layout (Front) 1. The minimum length of the cable tube is the length of VFD cabinets and the bypass cabinet. 2. For the safety and convenience of the cable routing, it is recommended that the cabinets are equipped upon the cable tube as shown above. The bottom of the VFD is made of 10# channel steel, (For rated power is larger than or equal to 1600kW, it is made of 16# channel steel. For rated power is larger than 4000kW, it is made of 18# joist steel.) Thus, it is required to select the right one according to the VFD weight. 3. A...

JNHI MV VFD is composed of transformer cabinet, power cell cabinet/control cabinet . High power VFD has to be equipped with starting cabinet. See dimension details of JNHI General MV VFD in Outline Dimensions , which includes the basic shape, location, installation dimensions, as well as hoisting location, size and location of up air blower and input wiring hole. JNHI series medium voltage VFD may be transported by truck, train, ship etc. During the transportation of JNHI series medium voltage VFD, please be careful to lay down gently and keep away from rain exposed to sunlight, strenuous...

Reliability & Service >*£ Please consult with TECO Co., Ltd. for more information.