For more than 100Kw motor soft starter, 32 bit high performance microprocessor,SCR firing. control board, 3000A trigger capacity, 380V input, 520V max output to set, 50Hz or 60Hz, with bypass control.
STC53 motor Soft Start Control Board adopts 32 bit industrial level high performance microprocessor, high digital exquisite quality design, specialized for three phase AC motor soft start occasion, with bypass output control. Fault alarm, parameters are displayed by LCD screen or touch screen menu in Chinese, parameters are saved automatically after setting. The soft start methods has ramp voltage with limit current start, voltage sudden jump start, constant current start and frequency conversion soft start, which makes the motor can achieve smooth start ant any working situation, protects the drag system, reduces the impact on the grid, and ensures the motor smooth decrease speed to stop and soft stop. It helps solving the stop surge problem of the inertial system efficiently, eliminating the feedback style impact of the drag system, and can also regulating the various parameters during the soft start according to the characteristic of the motor load, such as soft start mode, overload protection level, and start and stop time. The control board is with power on soft start, soft stop, running time query, PID fault record and working mode indicate. It is with thyristor anti-parallel AC trigger method, can trigger the thyristor under 3000A, suitable for kinds of industrial area use AC three phase squirrel cage induction motor load and the like.
Technical specifications：
◆ Frequency: 50Hz/ 60Hz
◆ Working power supply: 220/380Vac ±15%, 50/60HZ
◆ SinePower User Manual of STC53 AC Motor Soft Start Control Board
◆ Rated working voltage (Ue): AC230V, 380V, 660V +/- 15%, 50/60Hz
◆ Rated working current (Ie): 100 ~ 1600A
◆ Primary start voltage: 10 ~ 99%
◆ Soft start methods: the ramp voltage start with limit current start, voltage sudden jump start, constant current start, sudden jump and
◆ constant current start.
◆ Stop methods: Soft stop, free stop.
◆ Soft start time: 1 ~ 200 seconds
◆ Soft stop time: 0 ~ 200 seconds
◆ Alarm relay contactor capacity: 250Vac / 10A
◆ Current transformer: 1A standard transformer signal (secondary 5A need to custom)
◆ Over current feature: 6Ie / 8s
◆ Dielectric strength: 3500 VRMS
◆ Start times: the time between every start time should be more than 5 minutes.
◆ Ambient (working) temperature: -20°C~ 60°C
Working Relative humidity: ≤ 90% RH (no frost)
Indoor installation requirements: no flammable, no explosive, no corrosive gas, no conductive dust, and vibration should be less than 0.5G
◆ Dimensions: 240 * 160 * 50 mm
◆ Dimensions between install holes: 225 * 145 mm
◆ Weight: 1KG
Product meet the standards：
IEC60947-4-2: Low-voltage switchgear and controlgear. Part 4-2: Contactors and motor-starters. AC semiconductor motor Controllers and starters.
GB14048.6-1998: Low-voltage switchgear and controlgear Part 4-2: Contactors and motor starters AC semiconductor motor controllers and starters.
GB3797-89: Electronic Control Equipment Part II - Electronic Control Equipment with Electronic Devices.
IEC61000-4: Electromagnetic compatibility, test and measurement technology.
IEC65: Safety of household and similar general purpose electronic and related equipment powered by grid power.
AC Motor Controller Electrical Wiring diagram
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