Hunan Sanchang Pump Co., Ltd. is one of the most reliable manufacturers and suppliers of mining high voltage soft starter cabinet in China. If you're going to buy high efficiency mining high voltage soft starter cabinet made in China, welcome to get pricelist from our factory. All customized products and OEM&ODM products are with high quality and competitive price.
Mining High Voltage Soft Starter Cabinet
The GKGR Series Mining High Voltage Soft Starter Cabinet is designed for the smooth starting and protection of high-voltage AC motors. It uses multiple thyristors modules connected in series between the power supply and the motor. By controlling the thyristors firing angle, the cabinet continuously adjusts the output voltage, allowing the motor to start and accelerate smoothly.
This technology reduces starting current, minimizes mechanical stress, and improves the reliability of both the motor and the power system. The cabinet is suitable for underground mining and various heavy industrial applications.
Technical Specifications
|
Item |
Technical Specifications |
|
Rated Voltage |
6 kV, 10 kV |
|
Rated Current |
100 A, 150 A, 200 A, 250 A, 300 A, 330 A, 400 A |
|
Rated Frequency |
50 Hz |
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Enclosure Protection Degree |
IP43 |
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Applicable Standard |
Complies with Q/TF701-2021 and is manufactured in accordance with approved drawings and technical documentation. |
|
Major Components |
Vacuum contactor, current transformer, medium-voltage soft starter assembly, control board, push buttons, measuring instruments, and other components comply with their respective product standards. |
Operating Conditions
The soft starter cabinet is designed to operate under the following environmental conditions:
a) Ambient temperature: −20°C to +40°C.
b) Altitude: Not exceeding 1,000 m above sea level.
c) Relative humidity: Not more than 95% at +25°C.
d) Installation location: Free from significant vibration, shock, or mechanical impact.
e) Atmosphere: Free from gases or vapors that may damage insulation or corrode metal parts.
f) Moisture: Installation is permitted in locations where slight vertical water dripping may occur.
g) Installation position: The cabinet shall be installed on a level surface with an inclination not exceeding 5°.
h) Voltage measurement: An external voltage transformer (VT) shall be provided to supply the main circuit voltage measurement signal (AC 100 V).
i) Control power supply: An external AC 220 V power source shall be provided for the control circuit.
Design & Construction
The GKGR Series Mining General-type High Voltage Soft Starter is designed with a focus on safety, reliability, and ease of maintenance. Key design features include:
- High-quality enclosure finish with a smooth, uniform, and durable coating for long-term corrosion resistance and an attractive appearance.
- Optimized electrical insulation design, featuring adequate electrical clearance and creepage distances to ensure safe and reliable operation.
- Dedicated grounding system, with clearly identified grounding terminals and grounding symbols for safe installation.
- Mechanical and electrical interlocking to prevent access to live compartments while the main circuit is energized, ensuring operator safety during operation and maintenance.
- High-voltage warning labels prominently displayed on the cabinet to enhance operational safety.
- Standardized busbar color identification for convenient wiring, inspection, and maintenance in accordance with applicable standards.
Key Benefits
- Robust and reliable cabinet construction
- Enhanced operator safety through interlocking protection
- Easy installation and maintenance
- Compliance with applicable electrical safety standards
- Suitable for demanding mining and industrial environments
Comprehensive Protection Functions
The GKGR Series provides multiple protection functions to improve operational safety and equipment reliability.
Protection features include:
- Overload protection
- Phase loss protection
- Overcurrent protection
- Ground fault protection
- Motor operating status monitoring
- Automatic fault detection
- Reliable system shutdown during abnormal conditions
Designed for Harsh Industrial Environments
The GKGR Series is engineered for demanding mining and industrial environments. Its robust structure and intelligent control system ensure reliable operation under continuous heavy-duty conditions.
The cabinet is widely used for large motors driving:
- Pumps
- Fans
- Compressors
- Conveyors
- Crushers
- Hoists
- Other high-power industrial equipment
Why Choose the GKGR Series?
The GKGR Series combines advanced thyristors soft-start technology with intelligent motor protection to deliver safe, reliable, and efficient motor starting.
Its smooth voltage control reduces electrical and mechanical stress, improves equipment lifespan, and ensures stable operation in underground mining and heavy industrial applications. With comprehensive protection functions and dependable performance, it is an ideal solution for modern high-voltage motor control systems.
FAQ
Q1: What should be checked before commissioning the soft starter cabinet?
A: Verify that all components and wiring are intact after transportation, tighten all electrical connections, and perform insulation and dielectric tests before energizing the cabinet.
Q2: Is control circuit testing required before energizing the main circuit?
A: Yes. Before applying medium voltage, energize the external AC 220 V control power supply and confirm that the protection relay, soft starter controller, metering instruments, and indicators operate correctly.
Q3: How are the motor protection and starting parameters configured?
A: Set the protection functions and starting parameters according to the motor nameplate data and application requirements before commissioning.
Q4: How is the motor started for the first time?
A: After the control circuit has been verified, energize the medium-voltage supply, follow the standard starting procedure, monitor the motor acceleration process, and fine-tune the starting parameters if necessary.
Q5: What precautions should be taken during transportation and storage?
A: Keep the cabinet upright, protect it from severe vibration, rain, and moisture, avoid exposure to fire or heat sources, and do not disassemble any components during transportation or storage.
Q6: What routine maintenance is recommended?
A: Periodically inspect electrical connections, clean the cabinet interior, verify the insulation condition, and check the operation of protection devices to ensure reliable long-term performance.
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