GTXGN-12 Solid Insulated Ring Main Unit
Ring Main Unit GTXGN-12 Solid Insulated Ring Main Unit The GTXGN-12 Solid Insulated Ring Main Unit (RMU) is an innovative, environmentally friendly, and fully sealed
Medium-voltage electrical components
Medium-voltage electrical components
Medium-voltage electrical components are essential in power systems, designed to handle and transmit medium voltage efficiently. They ensure the safe and reliable transmission, distribution, control, and protection of electrical energy. These components play a critical role in power substations, facilitating the seamless operation of modern electrical networks.
Key Features:
Medium-voltage electrical components typically operate at voltage levels ranging from 6kV to 35kV. Their key features include: high insulation requirements, strong breaking capacity, strict safety protection measures. They must not only reliably cut off load current and fault current, but also possess complete arc extinguishing, grounding and interlock structures. At the same time, they need to take into account both operational stability and maintenance safety. They are widely used in power distribution and power transformation systems to perform functions such as control, protection, isolation and compensation.
Why choose medium-voltage electrical components
Medium-voltage electrical components, including circuit breakers, disconnect switches, load switches, transformers, capacitors, and other related medium-voltage components, are essential for the safe and efficient operation of power systems. They play key roles in fault protection, isolation, voltage measurement, current monitoring, and power factor correction, ensuring the stable performance of switchgear and distribution networks.
We supply a wide range of high-performance electrical components for different applications, providing reliable and compatible solutions for substations, industrial facilities, and other medium-voltage systems.
Medium-voltage voltage transformers and current transformers deliver accurate voltage and current data for monitoring and protection, while capacitors help stabilize voltage and improve overall power quality. Together, these components support efficient, reliable, and long-term system operation.
Product Advantages
Safety and Protection: Medium-voltage circuit breakers and isolators ensure operational safety by cutting off circuits during faults and providing isolation for maintenance.
Accurate Monitoring: Medium-voltage transformers and capacitors deliver precise data for system monitoring and enhance power system stability.
Efficient Energy Transmission: Medium-voltage cables and accessories ensure efficient transmission and distribution of electrical energy, essential in electrical substation components.
Advanced Design and Reliability: Built to withstand extreme conditions, these components guarantee long-term performance, supporting system reliability in critical infrastructures.
Operating Conditions
Ambient Temperature: Generally suitable for environments from -5°C to +40°C. Excessively high or low temperatures may affect insulation performance and service life.
Altitude: Normally not exceeding 1000m. Plateau-type products should be selected for high-altitude areas.
Humidity and Air Quality: Relative humidity should not be too high. The environment should be free from condensation, corrosive gases, and flammable or explosive dust.
Installation Site: The installation site should be free from severe vibration and impact, with a general inclination not greater than 5°.
Working Environment: The operating environment should be clean and well ventilated, avoiding oil contamination, salt spray, and strong electromagnetic interference.
Application
Medium-voltage electrical components are mainly used in voltage levels ranging from 6kV to 35kV. They are widely applied in urban power grids, industrial parks, substations, industrial and mining enterprises, building power distribution, and new energy projects, undertaking tasks such as power transmission, distribution, control, protection, and isolation, to ensure the safe and stable operation of the medium-voltage system.
Transformer Primary Side Fuse Selection Table
Technical Parameters
Graphic Symbols
Transformer Primary Side Fuse Selection Table
Transformer Primary Side Fuse Selection Table
| Transformer Capacity (kVA) | Transformer Primary Voltage | ||
|---|---|---|---|
| 7.2 kV | 12 kV | 40.5 kV | |
| Rated Current of Fuse Link (A) | Rated Current of Fuse Link (A) | Rated Current of Fuse Link (A) | |
| 100 | 20 | 16 | 3.15 |
| 160 | 25 | 16 | 6.3 |
| 200 | 31.5 | 20 | 6.3 |
| 250 | 40 | 25 | 10 |
| 315 | 50 | 31.5 | 10 |
| 400 | 63 | 40 | 16 |
| 500 | 80 | 50 | 16 |
| 630 | 100 | 63 | 20 |
| 800 | 125 | 80 | 25 |
| 1000 | 160 | 100 | 31.5 |
| 1250 | 160 | 125 | 40 |
| 1500/1600 | 200 | 160 | 50 |
| 2000 | 250 | 200 | 63 |
| 2500 | 315 | 250 | 80 |
Note: Fuse ratings should be confirmed according to transformer characteristics,
system conditions, and applicable electrical standards.
Technical Parameters
Summary Table of Electrical Component Letter Symbols
| Letter Symbol | Component Name | Letter Symbol | Component Name |
|---|---|---|---|
| B | Transducer, Sensor | Q | Power Switching Device |
| C | Capacitor | QA | Automatic Switch |
| FU | Fuse | QF | Circuit Breaker |
| G | Generator, Power Supply | QS | Disconnector / Isolating Switch |
| HL | Indicator Light | R | Resistor |
| HA | Acoustic Alarm | S | Switching Device |
| K | Relay, Contactor | SA | Selector Switch |
| KA | Auxiliary Relay | SB | Push Button |
| KD | Differential Relay | T | Transformer |
| KG | Static Relay | TA | Current Transformer (CT) |
| KM | Contactor | TV | Voltage Transformer (VT/PT) |
| KT | Time Relay | UC | Converter |
| KV | Voltage Relay | UI | Inverter |
| L | Inductor, Reactor | UR | Rectifier |
| M | Motor | UF | Frequency Converter |
| PA | Ammeter | X | Terminal, Plug, Socket |
| PJ | Watt-hour Meter | XB | Junction Box |
| PP | Wattmeter | XS | Socket |
| PV | Voltmeter |
Graphic Symbols
Custom Medium Voltage Electrical Components Solutions
(The values can be customized according to project requirements.)
If you have specific requirements for the medium voltage electrical components, please contact us. Our team will review your application needs and provide a tailored solution.
We can customize rated voltage, current capacity, component type, insulation requirements, and other key parameters to ensure reliable performance and safe operation in your power system. Zoliov medium voltage electrical components are suitable for substations, switchgear systems, industrial plants, and other power distribution projects where safety, stability, and long-term reliability are required.
FAQ
Related products
Check out these related products you might also be interested in.
Medium-voltage electrical components
Electrical components Medium-voltage electrical components Medium voltage electrical components are essential in power systems, designed to handle and transmit medium voltage efficiently. They ensure the
Low-voltage electrical components
Electrical components Low-voltage electrical components Low-voltage electrical components are essential devices used in circuits with voltages below 1200V (AC) or 1500V (DC). These include circuit
Electric Power Fittings
Zoliov provides electric power fittings, power line fittings, overhead line fittings, and pole line hardware for transmission lines, distribution lines, substations, and power grid projects.
Related articles
The application of electrical equipment in data centers
You need electrical equipment to help data centers work well. Good systems stop outages, which can cost a lot of money. Power problems are the
The application of electrical equipment in the charging infrastructure of electric vehicles
You will see many important types of electrical equipment in electric vehicle charging stations, which are a crucial part of the charging infrastructure. These include
The Key Role and Solutions of Electrical Equipment in New Energy Projects
Electrical equipment plays a key role in ensuring that new energy projects operate effectively. Electrical engineers and electricians are essential in maintaining the safety and
Efficient power distribution: A comprehensive selection from low-voltage distribution cabinets to high-voltage switchgear
You have an important job when you pick the Efficient switchgear for your building, especially considering the role of power distribution. The world market for
Get in Touch
Have questions or concerns about electrical power distribution products? Get answers quickly by emailing our engineers.
