Grounding Protection Device
Application field: According to different capacitor currents, it can be divided into high resistance grounding and low resistance grounding. At present, neutral point grounding protection devices are widely used in urban distribution networks, large industrial parks, power plants, offshore platform distribution systems, large chemical enterprises, etc;
Performance characteristics: This series of products is made of high-quality stainless steel alloy resistance elements, with low temperature rise coefficient and small resistance change rate. It adopts ceramic and mica double insulation, with high stability performance The heat capacity of the resistor is large: Through unique processing technology, the rated power of a single resistor can reach 1200 watts.
Product application:
A neutral point grounding protection device is a current limiting electrical protection device connected between the neutral point of a generator or transformer and the ground. When a fault occurs in the power grid, the neutral point voltage of the power supply will be offset, especially in cable powered power grid systems. When the current is greater than the specified value, it will generate arc grounding overvoltage, which greatly increases the ground voltage of the non fault phase and causes insulation damage to the equipment, resulting in two-point or multi-point grounding short circuit and power outage accidents. The purpose of using neutral point resistance grounding method is to inject resistive current into the fault point, making the grounding fault current have resistance capacitance properties, reducing the phase difference with voltage, lowering the reignition rate of the fault point current after zero crossing and arc extinguishing, limiting the overvoltage within a certain level, improving the sensitivity of relay protection equipment to achieve tripping, rapid search for fault lines and backup switching, and effectively protecting the normal operation of the system.
Grounding protection devices are widely used in the secondary and stator side neutral points of transformers and generators. After connecting a resistor in series with the neutral point of the equipment (or using a grounding transformer to extract the neutral point), intermittent arc overvoltage electromagnetic energy is discharged, causing the neutral point potential to decrease and the speed of fault phase recovery voltage rise to slow down, thereby reducing the possibility of arc reignition, suppressing the amplitude of grid overvoltage, and enabling selective grounding protection.
Product features:
Technical features:
Fault current: 1~5000A
System voltage: 0.38kV~110kV (3, 6, 10, 35)
Heating time: 5 seconds, 10 seconds, 30 seconds, 60 seconds, continuous
Resistance (20 ℃): 0.01-1500 Ω
Temperature rise: Short term temperature rise (maximum not exceeding 760 ℃ within 10-60 seconds)
Continuous temperature rise: maximum not exceeding 385 ℃
Maintenance free, quick and convenient disassembly and replacement
Compact structure, easy to install
Shell protection level: IP20～IP56
Optional accessories:
Intelligent monitoring device that can monitor current, temperature, and fault frequency
Isolating switch
Current transformer, voltage transformer
Temperature and humidity controller and heater
Lighting inside the cabinet
Application environment:
Surrounding air temperature:+ 40℃— -15℃
Altitude: 1000m, 3000m
Minimum nominal creepage distance: ceramic material not less than 18mm/kV, organic material not less than 20mm/Kv
Surrounding air temperature:+ 40℃— -35℃
Altitude: 1000m, 3000m
Minimum nominal creepage distance: Level II: 20mm/Kv; Grade III: 25mm/kV; Level IV: 31mm/kV
Ordering Notice:
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Product Overview and Design
ZHIYOU provides a comprehensive selection of electrical transformers manufacturers and electrical equipment suppliers products tailored to industrial and commercial applications. Our range of grounding transformers is designed to ensure optimal safety and reliability in electrical systems. Manufactured with precision, our transformers are built to withstand demanding conditions, offering long-term performance and durability. These transformers comply with the highest standards of safety, ensuring that your electrical infrastructure operates smoothly and without interruption. Our commitment to quality guarantees each product is rigorously tested and verified before delivery to meet industry standards and exceed client expectations.
Core Features and Benefits
Our transformers, such as oil-filled transformers and distribution transformers, are engineered with the latest technology to provide superior energy efficiency. As reliable transformers suppliers, we focus on delivering innovative solutions that minimize energy loss, enhance operational performance, and reduce maintenance costs. ZHIYOU transformers are available in various designs, including dry-type transformers and medium voltage transformers, to suit diverse power needs. These transformers are also customizable to meet the unique requirements of each application, offering versatility and flexibility for industrial environments. Designed for both residential and industrial applications, our solutions are reliable and cost-effective.
Applications and Industries
ZHIYOU's extensive portfolio of transformers manufacturers and electrical transformers manufacturer products are suitable for a wide range of applications, including power generation, distribution, and transmission. We provide shunt reactors for power correction, voltage regulators for precise voltage control, and switchgear to ensure proper circuit management. Whether for electrical substation equipment or earthing transformers, our products are engineered to perform under the most challenging conditions. Our transformers can be integrated into various systems to improve electrical grid reliability, efficiency, and safety, making them an ideal choice for industrial plants, power stations, and other critical infrastructure projects.
Use Scenarios
Industrial Power Distribution
ZHIYOU's electrical transformers manufacturers provide reliable solutions for industrial power distribution, ensuring that heavy machinery and manufacturing plants operate efficiently and safely. Our power transformers and medium voltage transformers are designed to meet the high energy demands of large-scale operations, delivering continuous power while reducing the risk of overloads. We also offer oil-filled transformers for high-capacity energy systems, which are particularly suitable for industries requiring large power supplies. With ZHIYOU, industrial clients can trust in the consistency and stability of their energy systems.
Residential and Commercial Applications
For residential and commercial buildings, ZHIYOU’s electrical transformers manufacturer products provide safe and reliable solutions for energy distribution. Our dry-type transformers are perfect for low-voltage systems, offering quiet, efficient operation without the need for oil or other hazardous materials. They are an ideal choice for residential communities and commercial complexes where space and safety are crucial considerations. These transformers ensure a steady flow of electricity, contributing to the comfort and productivity of both businesses and homes.
Substation Integration and Power Grid Management
ZHIYOU’s transformers suppliers deliver high-performance transformers ideal for integration into substations and power grids. Our high voltage transformers and grounding electrical equipment are essential for maintaining the integrity of the electrical grid, ensuring power transmission remains stable over long distances. With the inclusion of voltage regulators and switchgear, these transformers contribute to maintaining optimal power levels and safeguarding against unexpected disruptions. Whether for local power grids or national transmission systems, ZHIYOU products help manage energy distribution effectively and efficiently.
About Us
ZHIYOU is a renowned electrical equipment supplier and transformers manufacturers, specializing in high-quality electrical transformers and related products. Established with years of expertise in the electrical manufacturing industry, our company has built a strong reputation for delivering top-tier transformers such as distribution transformers, oil-filled transformers, and dry-type transformers to various industrial and commercial sectors.
Our core products serve critical applications in energy generation, power distribution, and safety systems, ensuring reliable and efficient electrical systems worldwide. With a dedicated research and development team, ZHIYOU focuses on continuous innovation to meet the evolving needs of the energy sector. We operate with state-of-the-art production facilities and stringent quality control processes to guarantee the highest product standards.
We are committed to maintaining the highest standards of safety, quality, and sustainability in everything we do. ZHIYOU’s products are designed to meet international standards and exceed customer expectations. As a trusted partner, we are dedicated to providing our customers with superior transformers suppliers solutions that improve performance, efficiency, and safety in their electrical systems.
FAQ
What types of transformers do you offer?
ZHIYOU provides a wide range of transformers, including power transformers, distribution transformers, high voltage transformers, and dry-type transformers, designed for various industrial and commercial applications.
Do you provide grounding equipment for electrical systems?
Yes, we offer specialized grounding transformers and grounding electrical equipment to ensure safety in electrical systems, preventing ground faults and enhancing system stability.
Are your transformers suitable for industrial use?
Absolutely. ZHIYOU’s transformers manufacturers produce durable and efficient transformers for industrial use, including oil-filled transformers and medium voltage transformers, tailored to meet high-power demands.
How do your transformers improve energy efficiency?
Our transformers suppliers focus on reducing energy loss through innovative designs that increase efficiency, such as using shunt reactors to control voltage and optimize power quality.
Can your products be customized for specific applications?
Yes, ZHIYOU offers customized transformer solutions to meet the unique needs of our clients, including specialized electrical transformers manufacturers products for power grids, substations, and industrial applications.
Contact us today to secure your reliable transformers suppliers solutions for optimal energy distribution and safety!
