MV/HV Intelligent Solid-State Soft Starter
Medium-to-High Voltage Intelligent Solid-State Soft Starter: This device is an industrial-grade, high-performance speed control and protection system specifically designed for high-power, three-phase asynchronous and synchronous motors ranging from 3 kV to 10 kV. Utilizing advanced thyristor power electronics control technology and fiber-optic isolation, the product achieves precise limitation and smooth regulation of motor starting currents, thereby effectively minimizing impact on the power grid and extending the service life of mechanical equipment. The system features a high protection rating ranging from IP20 to IP54, incorporates built-in intelligent self-diagnostic functions active throughout both startup and continuous operation, and is capable of stable performance in harsh industrial environments with ambient temperatures ranging from 0°C to 50°C.
Description
Technical Advantages
1.Dual Isolation and Absolute Safety (Fiber Optic Isolation):
The system employs advanced fiber optic isolation technology to completely isolate the high-voltage main circuit from the low-voltage control circuit. Featuring an exceptionally high Basic Impulse Insulation Level (BIL), it ensures the absolute safety of both operating personnel and low-voltage control components.
2.Microsecond-Level Real-Time Dynamic Protection (Comprehensive Motor Protection):
2.Microsecond-Level Real-Time Dynamic Protection (Comprehensive Motor Protection):
Powered by a high-speed control core based on a Digital Signal Processor (DSP), the system incorporates dozens of built-in, real-time intelligent self-diagnostic and protection mechanisms—covering issues such as motor overload, phase loss, start-up timeouts, and SCR overheating—with dynamic response speeds reaching the microsecond level.
3.Stepless, Smooth Start-up with Low Impact (Stepless Acceleration):
3.Stepless, Smooth Start-up with Low Impact (Stepless Acceleration):
Utilizing a high-quality series-parallel SCR (thyristor) architecture, the system offers five adjustable start-up modes—including current limiting, voltage ramping, and current jump—to achieve smooth, stepless acceleration. This significantly mitigates the severe mechanical and electrical shock typically associated with starting high-power motors, thereby protecting both the public power grid and the mechanical transmission system.
4.Fully Industrial-Grade Robust Design (Robust Industrial Construction):
4.Fully Industrial-Grade Robust Design (Robust Industrial Construction):
A redundant, multi-stage SCR design provides an exceptional overload capacity of 400% to 500%. Combined with fanless natural convection or optimized thermal management, the system is engineered to operate stably and reliably over the long term, even in harsh, extreme industrial environments ranging from -40°C to +50°C.
5.Smart Grid Integration and Industrial Interconnectivity (Smart Multi-Protocol Integration):
5.Smart Grid Integration and Industrial Interconnectivity (Smart Multi-Protocol Integration):
Equipped as standard with an intelligent microprocessor-based control panel (HMI), the system offers comprehensive support for various mainstream international industrial bus protocols—including Modbus RTU/TCP, Profibus-DP, and Ethernet—enabling seamless integration with central control room DCS systems or remote cloud-based operation and maintenance platforms.
Typical Applications
1.Hydraulic and Municipal Engineering
Widely applied in large and medium-sized cities for the starting of high-pressure, long-distance water transmission pumps—including those for water supply and drainage systems, industrial circulating water, fire suppression, and wastewater treatment plants. This technology effectively eliminates the “water hammer effect” during shutdown, thereby safeguarding pipeline integrity.
2.Mining and Building Materials Industries
2.Mining and Building Materials Industries
Suitable for heavy-load starting equipment in large-scale mining operations, such as crushers, ball mills, heavy-duty belt conveyors, and cement clinker rotary kilns. It delivers smooth, high-torque starting capabilities, significantly reducing mechanical wear on gears and belts.
3.Metallurgy and Petrochemical Industries
3.Metallurgy and Petrochemical Industries
Extensively deployed in steelworks for high-power blast furnace blowers, oxygen plant compressors, and chemical pipeline pumps. It ensures the safe, heavy-load starting of equipment within 24-hour continuous production lines, even in the presence of power grid fluctuations.
4.Energy and Power Support
4.Energy and Power Support
Utilized in thermal power plants for induced draft fans and boiler feedwater pumps, as well as in new energy facilities for the centralized power distribution and intelligent reduced-voltage starting control of internal high-voltage AC synchronous and asynchronous motors.
Technical Parameters
Product Model: High Voltage Motor Solid State Soft Starter
| Item | Parameter |
| Rated Operating Voltage | 3kV / 6kV / 10kV |
| Rated Power Range | 250-11000kW |
| Load Type | Three-phase Asynchronous or Synchronous Motor |
| Starter Type | Standard Type and Pump Control Type |
| Initial Voltage | 0-100% Line Voltage |
| Insulation Isolation | Optical Fiber |
| Start-up Time | 1~30s |
| Stop Time | 1-60s |
| Start-up Times Per Hour | 1-4 times (Adjustable) |
| Diagnosis | Automatic Diagnosis During Startup and Operation |
| Ambient Temperature | 0-50℃ |
| Relative Humidity | 5-95% Non-condensing |
| Altitude | 0-1000m |
| Pollution Degree | Level 2 (Only dry, non-conductive pollution) |
| Seismic Grade | Level 4 |
| Protection Level | IP20-IP54 (According to user requirements) |
| Overall Dimensions | |
| 3.3kV | 1000 (W) * 1300 (D) * 2300 (H) |
| 6kV (75-300A) | 1000 (W) * 1300 (D) * 2400 (H) |
| 6kV (400-600A) | 1200 (W) * 1500 (D) * 2400 (H) |
| 10kV (55-300A) | 1000 (W) * 1300 (D) * 2400 (H) |
| 10kV (400-600A) | 1300 (W) * 1600 (D) * 2400 (H) |
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