STEP Electric Corporation is an industrial inverter supplier with research and development centers and manufacturing bases in both China and Germany, and six subsidiaries in China that include: Shanghai Sigriner STEP Electric Company Ltd., Shanghai STEP Elevator Components Company Ltd., Shanghai STEP Electric Wire & Cable Company Ltd., Shanghai STEP Software Technology Company Ltd., Yixin (Shanghai) International Trade Company Ltd., Hong Kong STEP International Electric Holdings Company Ltd. and our overseas company, STEP Sigriner Elektronik GmbH.
AS800 high-voltage inverter, as the high-h igh voltage-fed high-voltage inverter designed and manufactured by Shanghai Sigriner STEP Electric Company Ltd. and integrating the cutting-edge international power electronic technology and vector control technology, greatly suppresses the input harmonic current on the network side through phase-shifting rectifier transformer, achieves voltage superposition through cascade connection of multistage H-bridge power units and obtains the almost perfect high pressure sine wave output. It may directly drive the high-voltage motor without any filter and its harmonic indicator meets the requirements for the power harmonics in IEC std 519-1992 (International Electrotechnical Commission) and GB/T 12668.4-2006 (national standard).
Power industry : primary air fan, secondary air fan, forced draught blower, induced draft fan, exhauster, booster fan, compressor, storage pump, condensate pump, boiler feed pump, circulating water pump and morta
chemical industries : oil recovery and water injection pump, oil-submerged pump, fuel delivery pump, electric submersible pump, brine pump, circulating water pump, pipeline delivery pump, boiler primary fan, secondary air fan, induced draft fan, Roots blower, compressor and coal grinding circulating fan
Municipal water affairs : sewage pump, clean water pump, lift pump, water supply pump, heat circulating pump, pressure pump, induced draft fan and forced draught blower
Rubber and plastic industry : internal mixer, extruder and air compressor
Steel and metallurgy industry : main exhaust fan, blast furnace blower, compressing blower, converter dedusting fan, induced draft fan, secondary dedusting fan, gas compressor, forced draught blower, high temperature fan, combustion fan, oxygen compressor, sulfur dioxide fan, water delivery pump, feed pump, lift pump, circulating water pump and slag flushing pump
Coal and mine : belt conveyor, counter-rotating fan, axial flow fan, dust removal fan, forced draught blower, compressor, slurry pump, clean water pump, charge pump, agitator pump, descaling pump, slush pump, medium pump and kiln drive
Cement and building materials : high temperature fan, circulating fan, kiln induced draft fan, kiln tail fan, kiln air supply fan, raw material wind mill, coal mill, separator fan, forced draft fan, cement mill exhaust fan and coal mill dust removal fan
Other industries : air conditioning compressor, various fan pump test stands and wind tunnel tester
● Introduction to system components
Unit cabinet : a unit cabinet consists of several power units in series. A power unit consists of the three-phase diode-bridge rectifier, IGBT inverter bridge, capacitor bank and other elements as well as the drive, protection, monitoring and communication components; all power units are subject to intelligent design and have powerful fault self-diagnosis capacity; the power unit is subject to modular design for production and maintenance.
Control cabinet : the control cabinet is the control part of the whole transducer and the core components of its main control system include A RM, DSP and FPGA. The multi-level PWM control algorithm is used to ensure optimized operation of the motor.
Transformer cabinet : the transformer is dry phase shifting transformer with H class insulation. The maximum system operation is up to 180°C and ± 5% tap at the primary side is adjustable.Function of phase shifting transformer: reduce harmonic interference and improve the power factor.
Bypass cabinet : function of the manual bypass cabinet system: manually switch the motor to the common frequency power network after transducer fault and decommissioning.Main function of automatic bypass system : directly switch the motor to the common frequency power network in case of transducer fault to guarantee production continuity.The automatic switching process has no impact on the network and motor.
Starting cabinet : prevent large exciting current in the high-voltage transmission of the transducer from causing quick-disconnect protection of the superior circuit breaker. Starting cabinet configuration standard: 3kV630kW, 6kV1250kW, 10kV2000kW and above standard configuration, other power sections optional.
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