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About Us
Jiangsu Dingxin Electric Co., Ltd.
Jiangsu Dingxin Electric Co., Ltd. is located in the Industrial Park of Haian Development Zone, a development zone in Jiangsu Province. It is a high-tech enterprise in Jiangsu Province specializing in the production of power equipment, with an annual production capacity of 50 million KVA. It mainly produces 110KV, 220KV and 500KV ultra-high voltage transformers, various dry-type transformers, oil-immersed transformers, amorphous alloy transformers, wind and solar energy storage transformers, prefabricated substations and reactors of various specifications with voltage levels of 35KV and below. , electric furnace transformer, rectifier transformer, mining transformer, split transformer, phase shift transformer and other special transformer. As China OEM/ODM High And Low Voltage Switchgear Manufacturers and Custom High And Low Voltage Switchgear Factory, companies have successively passed IS09001, ISO14001, ISO45001, ISO19011 system certification. Among the customers we cooperate with are many urban and rural power grids, as well as petrochemical, metallurgical, textile enterprises, mines, ports, residential communities, etc. We have long-term cooperation with many well-known companies, and we are also qualified suppliers for many listed companies in the electrical industry. Product sales cover the national market and are exported to Europe, the United States, Australia, Indonesia, Russia, Africa, Vietnam and other countries.
Certificate Of Honor
  • Business Licence
  • S22-M-250/10-Nx1 And Energy Efficiency Report
  • SCB18-800/10-NX1 And Energy Efficiency Report
  • SCB18-500/10-NX1 And Energy Efficiency Report
  • SCB18-2500/10-NX1 And Energy Efficiency Report
  • S13-M-1000/10KV Type Test Report
  • S13-M-1000/20KV Type Test Report
  • S13-M.RL-630/10KV Type Test Report
Industry knowledge
What safety features are incorporated into the design of the High And Low Voltage Switchgear?
Safety is a critical aspect of high and low voltage switchgear design to protect both personnel and the equipment. Various safety features are incorporated into the design to minimize risks. Here are some common safety features:
Enclosures and Barriers:
Metal Enclosures: Switchgear is often housed in metal enclosures to contain and shield the electrical components from external factors and to prevent unauthorized access.
Arc-Resistant Design: Some switchgear is designed to minimize the potential harm caused by arc flashes, with features such as arc-resistant enclosures and barriers.
Interlocking Systems:
Mechanical Interlocks: These prevent certain operations unless specific conditions are met, reducing the risk of incorrect actions.
Door Interlocks: Switchgear doors are often interlocked to ensure that they cannot be opened while the equipment is energized.
Grounding Systems:
Grounding and Bonding: Proper grounding and bonding systems help prevent electrical shock and ensure the safe dissipation of fault currents.
Ground Fault Protection: Switchgear may incorporate ground fault protection devices to detect and isolate ground faults promptly.
Safety Switches and Disconnects:
Emergency Stop Devices: Switchgear may have emergency stop buttons or switches for immediate shutdown in case of an emergency.
Isolation Switches: These allow for the isolation of specific components for maintenance or repair.
Protective Relays:
Overcurrent Protection: Protective relays are used to sense and respond to overcurrent conditions, preventing damage to equipment and reducing the risk of fires.
Fault Detection: Relays can detect various types of faults and initiate protective actions to isolate the faulted section.
Warning Signs and Labels:
Clear Markings: Switchgear is often labeled with clear warnings, instructions, and hazard identifications to guide personnel during operation and maintenance.
Arc Flash Labels: Switchgear may have labels indicating the potential arc flash hazard and the required personal protective equipment (PPE).
Remote Operation and Monitoring:
Remote Operation: Some switchgear systems allow for remote operation, minimizing the need for personnel to be in close proximity during certain activities.
Continuous Monitoring: Real-time monitoring of critical parameters can detect abnormal conditions early, allowing for preventive action.
Temperature Monitoring:
Thermal Monitoring: Sensors can be used to monitor the temperature of critical components, helping to identify overheating issues before they become critical.
Fire Suppression Systems:
Fire-resistant Materials: The use of fire-resistant materials in the construction of high and low voltage switchgear can help contain and resist the spread of fires.
Automatic Fire Suppression Systems: Some switchgear installations incorporate automatic fire suppression systems to extinguish fires quickly.

High And Low Voltage How is Switchgear designed to handle high and low voltages?
Switchgear is designed to handle both high and low voltages by incorporating various components and features that can manage different voltage levels effectively. Here are some key aspects of high and low voltage switchgear design related to handling high and low voltages:
High Voltage Switchgear:
Insulation Materials:
High Dielectric Strength: Materials with high dielectric strength are used to insulate the conductive parts and prevent arcing.
Gas Insulation: In high-voltage applications, switchgear often uses gas (such as sulfur hexafluoride) as an insulating medium due to its excellent dielectric properties.
Solid Insulation: Some high-voltage switchgear employs solid insulation materials to prevent electrical breakdown.
Arc-Quenching Systems:
Circuit Breakers: High-voltage switchgear includes circuit breakers designed to interrupt the flow of current during a fault condition, extinguishing the arc quickly and safely.
Vacuum or SF6 Technology: Vacuum and sulfur hexafluoride (SF6) technologies are commonly used in high-voltage circuit breakers for efficient arc quenching.
Voltage Monitoring and Control:
Voltage Sensors: High-voltage switchgear often incorporates voltage sensors to monitor the voltage levels and initiate protective actions if necessary.
Voltage Regulators: Some switchgear designs include voltage regulators to maintain stable voltage levels within a specified range.
Clearances and Creepage Distances:
Increased Clearances: High-voltage switchgear requires larger clearances between conductive parts to prevent arcing.
Creepage Distance: The distance along the surface of an insulating material is crucial to prevent tracking and flashover.
Low Voltage Switchgear:
Insulation and Enclosures:
Insulating Materials: Even in low-voltage switchgear, proper insulation materials are crucial to prevent electrical leakage and ensure safety.
Metal Enclosures: Low-voltage switchgear is often housed in metal enclosures for protection against external factors and to contain potential arc flashes.
Circuit Breakers and Disconnects:
Molded Case Circuit Breakers (MCCBs): Commonly used in low-voltage switchgear, MCCBs provide protection against overcurrent and short circuits.
Disconnect Switches: These switches are used to isolate electrical equipment for maintenance or repair.
Busbars and Conductors:
Copper or Aluminum Busbars: Low-voltage switchgear typically uses copper or aluminum busbars to conduct electricity efficiently.
Modular Design:
Modular Components: Low-voltage switchgear is often designed with modular components for flexibility and ease of maintenance.
Digital Control Systems:
Microprocessor-Based Controls: Low-voltage switchgear may incorporate digital control systems for precise monitoring, control, and protection.
Compact Size and Air Insulation:
Air Insulation: Unlike high-voltage switchgear, low-voltage switchgear often relies on air insulation between conductive components.
Compact Design: Low-voltage switchgear is designed to be compact and space-efficient, suitable for a wide range of applications.