Zhuhai Wanlida Electric Co., Ltd.

Zhuhai, GuangDong, China

We are offering medium voltage adjustable speed drive. Direct medium voltage input and output. Igbt power units in series to obtain mv by means of overlap waveup to 40% saving rate wanlida medium voltage adjustable speed drive energy saving fields power generation: induced draft fan, forced draft fan, condensate pump, feed pump, primary air fan, secondary air fan, booster fan, circulating pump, mill fan, slurry pump etccement: draft fan, high-temperature fan, air blower, dust collection fan, grinding machine etc. Metallurgy: blast furnace blower, slurry pump, feed water pump, dust fan, compressor etc. Petroleum&chemical: water injection pump, crude oil pump, compressor, fan, circulation pump, etcurban water supply: water delivery pump, water intake pump, water supply pump, sewage treatment industry, self-fractionating pump etcminerals & mining: mud pump, ventilation fan, belt conveyor, slurry pump etcothers: loads such as fan, pump and compressor in pharmaceutical, paper making and wind tunnel test. Especially for: fan and pump power plantpump, fans steel plantfans cement plantfans product structure wanlida series medium voltage adjustable speed drive consists of by-pass cabinet, transformer cabinet, power unit cabinet and controller cabinet from left to right. technical advantages no need of extra output filtering devicedirectly driving the general medium voltage synchronous or asynchronous motor and the temperature of the motor will not be increased. No need of motor derating operationno dv/dt damage to insulation of motor and cableno torque ripple induced by harmonics, and the service life of motors and mechanism devices can be extendedno cable length limited when voltage drop is in the allowable range. Besides the above advantages, wanlida medium voltage adjustable speed drive has the following functions and features: protection of overload, overheat, over-current, open-phase, grounding, over-voltage, negative sequence. Current limited functioninterlock protection of control power supplytwo sets of control power hot standby for redundancypower cell by-pass functioncontrol cabinet automatic bypass functioncabinet door opening alarm functionlock-phase functionsynchronizing switch function between variable frequency and power frequency (optional) soft start of motors, no impact to mechanical equipment and networkvoltage source high-high variable frequency drive, it can realize no-step speed regulation, which makes the typical motors into intelligent motors. 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. (18 pulses for 3/3.3kv, 30/36 pulses for 6/6.6kv, 48/54 pulses for 10/11kv) by using the technique of multi-pulse rectifier, the harmonic current could be eliminated greatly. Power cell communicate with controller through optic-fiber, completely electric isolatedinner set pid regulator, can realize running in closed-loopmultiple communication methods with host computer, isolated rs485 interface, standard modbus rtu, communication protocol, profibus dp (optional), industrial ethernet communication protocol (optional)accurately fault records, can inquiry information and locate faultcompact construction, reasonable layout (can do customer-design)very good protective design to dust, ferrum pulveratum, acid mist, moisture etc. bypass cabinethas a function of "five-protection", meanwhile, it has a pressure relief channel to ensure the safety of operators. Modularized design of power units, interchangeable and easy to produce and repair. technical parameters series noparametersvalue 1hvf capacity(kva)2508750kva 2power of adaptive motor(kw)2007000kw 3input frequency(hz)4565hz 4rated input voltage(kv)3/3.3kv/4.16kv/6/6.6kv/10/11kv (+15% -35%) 5thdi at power grid20% of rated load) 8efficiency>97%(under a rated load) 9output frequency(hz)0.5120hz 10output frequency resolution0.01hz 11rated output current(a)36600a 12overload capability120%(1min), 150%(3s), 200%(immediate protection) 13control modev/f control or vector control 14logical control i/o signal16 channels respectively 15analog input010v/420ma 16analog output010v/420ma optional (2 channels) 17boolean input/outputcommunications/default point (expandable) 18acc & dec time (s)0.13000s 19communication with hostcan, profibus, modbus, rs232, rs485 etc 20cooling modeforced air cooling 21storage temperature00c450c 22ambient temperature-350c+450c 23ambient humidity95%, no condensation 24protection gradeip40 25noise