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ATA QB-H Series Medium Voltage Soft Starter
Classification：
Medium Voltage Soft Starter
Key words：
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Product Details
Specifications
Application areas
◆ Using high-voltage thyristors as the main circuit components, with voltage equalization protection and over-voltage protection systems:
◆ Advanced fiber optic and magnetic ring transmission technology to achieve isolation between the triggering detection of high-voltage thyristors and the low-voltage control circuit;
◆ Dual CPU structure, using advanced digital signal processor DSP for core control, and microcontroller for data and communication management, making device control real-time and efficient, with intuitive display, high reliability, and good stability;
◆ Multi-level signal processing and isolation technology, providing strong anti-interference capability for the system;
◆ Chinese/English display, membrane keys, simple operation, and user-friendly interface;
◆ Equipped with RS-485 or Profibus communication interfaces, allowing communication with host computers or centralized control centers.
Technical Parameters
| Working Conditions | |
| Voltage Range | 2~15kV AC |
| Power Range | 110kW~50000kW |
| Working Frequency | 50Hz/60Hz ±1Hz |
| Phase Sequence Requirements | Allowed to operate under any phase sequence |
| Load Requirements | Three-phase squirrel-cage asynchronous motor, synchronous motor, wound rotor motor |
| Control Power Supply | User provides 220V AC |
| Cooling Method | Natural Cooling |
| Installation Location | Indoor installation (places without conductive dust and severe vibration) |
| Environmental Conditions | Ambient Temperature: -20℃~+50℃ |
| Relative Humidity: 5%~95% without condensation | |
| Altitude less than 1500 meters (can derate for use above 1500 meters) | |
| Set Parameters | |
| Soft Start Time | 0~120 seconds adjustable |
| Soft Stop Time | 0~60 seconds adjustable |
| Initial Voltage | 20~80% adjustable |
| Rated Current | Adjustable |
| Protection Parameters | Adjustable |
| Jump Time | 90% voltage 0.0~3.0 seconds, adjustable |
| Control Method | Adjustable (ramp voltage control, current limit control, ramp current control) |
| Starting Method | Adjustable (local, button, remote, combination) |
| Protection Functions | |
| Phase loss, undervoltage protection | Undervoltage value adjustable |
| Power supply overvoltage protection | Overvoltage value adjustable |
| Running overcurrent protection | Automatic inverse time limit protection, CPU controlled |
| Thyristor component protection | Dynamic and static equalization |
| Instantaneous overvoltage protection | dv/df absorption network |
| Starting interval time protection | Starting interval time adjustable |
| Starting timeout protection | Protection exceeding soft start time setting |
| Interlock control protection | Mechanical and electrical interlock |
| Detection Functions | |
| Current Detection | Phase Current |
| Voltage Detection | Power supply input voltage and motor operating voltage |
| Communication Interface | |
| Communication Interface | RS-485 interface and Profibus interface optional |
| Communication Protocol | Modbus RTU and Profibus-DP protocol optional |
| Operating Interface | |
| LCD Display | Chinese/English display, showing various statuses and set parameters |
| Keyboard | Membrane Keypad |
| Status Indicator Lights | Includes: Power, Soft Start, Running, Fault |
| Memory Function | |
| Operation Memory | Can automatically download control parameters from EEPROM |
| Event Logging | Can record historical events |
The ATA QB-H series medium and high voltage soft starter is suitable for soft starting of medium and large AC motors with a rated voltage of 2 to 15KV. The product is widely used in industrial fields such as iron and steel, petroleum, chemical, aluminum, fire protection, mining, sewage treatment, and power generation. It can be well matched with motor-driven equipment, such as: water pumps, fans, compressors, crushers, mixers, belt conveyors, and other electromechanical equipment.
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