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FLN36-17.5
FLN36-17.5 SF6 Load Break Switch
FLN36-17.5KV SF6 load switch is an indoor/outdoor universal AC high voltage switchgear developed specifically for special upgrade scenarios of medium and high voltage distribution networks, cross-border high-end projects, and high-power long-distance distribution. It uses high-purity SF6 gas as the insulation and arc extinguishing medium, and strictly follows GB3804-2004, GB16926-2009, IEC 62271-105, and IEC 61850 standards for research and development and manufacturing. It has a rated voltage of 17.5KV, a rated frequency of 50/60Hz dual frequency adaptation, a rated current of 630A/1250A/1600A optional, and a mechanical life of ≥ 1800 cycles.
The product adopts a high-strength epoxy resin segmented casting sealing structure, matched with a high-end anti-corrosion alloy shell, and equipped with an F-type four spring energy storage operating mechanism, which can achieve precise linkage of “closing opening grounding locking” four positions. It supports intelligent remote control, data acquisition, linkage regulation and fault tracing. The incoming and outgoing lines support multi mode adaptation of cables, busbars, overhead lines, and are suitable for installation forms such as ring main units, prefabricated substations, outdoor switch stations, and multinational project distribution stations. The core is used for 17.5KV voltage level distribution networks, multinational high-end projects, large new energy bases, and heavy-duty industrial long-distance distribution. It can rely on breaking normal load current, cable charging current, no-load transformer current, and short-circuit transfer current, and is suitable for special voltage adaptation, cross-border compatibility, and High end performance core equipment.
Features
1. Special voltage adaptation and cross-border compatibility:
Specially developed for the 17.5KV special medium and high voltage level, the insulation gap and arc extinguishing parameters are accurately matched with the 17.5KV voltage standard. At the same time, it supports 50/60Hz dual frequency adaptation, which can perfectly meet the domestic special distribution network upgrade scenarios and the distribution needs of cross-border high-end projects (such as some countries in Europe and the Middle East). It can be directly put into use without additional modification, solving the pain point of incompatibility between special voltage levels and cross-border frequencies.
2. Power carrying upgrade, suitable for ultra large loads:
The rated current supports three options of 630A/1250A/1600A, and the rated short-time withstand current is increased to 50kA/3s, which is more than 11% higher than the carrying capacity of 15KV products. It can adapt to large-scale new energy bases, heavy industries, multinational industrial parks and other ultra large load distribution scenarios, meeting both conventional high-power demand and extreme high load power supply, with higher adaptability.
3. Top level optimization of insulation arc extinguishing and safety performance upgrade:
Ultra high purity SF6 gas (purity ≥ 99.9995%) is used as the insulation and arc extinguishing medium, and the rated pressure is increased to 0.08MPa at 20 ℃. The arc extinguishing chamber adopts a new high-efficiency arc extinguishing structure+dual arc adsorption device, and the arc extinguishing efficiency is increased by 15% compared to 15KV products. It can quickly and reliably cut off various complex load currents and short-circuit transfer currents at 17.5KV level. There is no open flame, harmful emissions, or arc leakage during the arc extinguishing process; SF6 gas leakage rate ≤ 5 × 10 ⁻⁹ Pa · m ³/s, insulation performance meets high-end distribution network standards, and eliminates various insulation safety hazards.
4. High end operation mechanism, double breakthrough in service life and accuracy:
equipped with F-type four spring energy storage operation mechanism, adopting a new transmission structure and intelligent locking system, the opening time is ≤ 12ms, and the mechanical life is extended to 1800 cycles, which is 20% higher than 15KV products. It supports five operation modes: manual, electric, remote control, intelligent linkage, and automatic operation and maintenance. The electric operation adopts PLC intelligent control module, which can achieve operation log traceability and precise fault positioning, and is suitable for high-end intelligent unmanned scenarios.
5. Strong protection and compatibility, suitable for extreme scenarios:
The shell is made of high-strength epoxy resin segmented casting+high-end anti-corrosion alloy shell, with a protection level of up to IP68, which can effectively resist extreme environments such as deep water immersion (within 1 meter in a short period of time), strong corrosion, strong vibration, extreme high and low temperatures, etc; The applicable temperature range is extended to -45 ℃~+60 ℃, and the altitude can be extended to 4500m. It can adapt to extreme scenarios such as high altitude, high cold, strong corrosion, and cross-border outdoor environments. The incoming and outgoing lines support multiple ways of adaptation and can seamlessly link with various high-end distribution equipment.
The product has a rated peak withstand current of 115kA, rated lightning impulse withstand voltage of 175kV between phases and ground, 195kV between faults, rated short-time power frequency withstand voltage of 110kV between phases and ground, 120kV between faults; rated active load breaking current of 630A/1250A/1600A is optional, rated cable charging current of 150A, can break no-load transformer capacity of 5000kVA, rated short-circuit transfer current of 40kA;
SF6 gas rated pressure (gauge pressure at 20 ℃) of 0.08MPa, equipped with gas density relay, sound and light alarm device, leakage online detection sensor, double arc adsorption device and intelligent operation and maintenance module. When the pressure is below 0.07MPa, it automatically alarms, uploads data and triggers linkage protection;
The applicable environmental humidity is that the average daily relative humidity does not exceed 95%, and the average monthly relative humidity does not exceed 90%. It can withstand strong corrosive gases, strong vibrations, extreme high and low temperature impacts, direct ultraviolet radiation, and short-term deep water immersion; The implementation standards include GB3804-2004, GB16926-2009, IEC 60265-1, IEC 62271-105, IEC 61850, and are compatible with EU EN standards and Middle East distribution standards, which can meet the compliance requirements of cross-border projects.
The product can be customized with cross-border project specific versions (multilingual operation interface), ultra high power versions (1600A), extreme environment adaptation versions, and high-end intelligent upgrade versions. It can be equipped with fuses, lightning arresters, current transformers, voltage transformers, intelligent measurement and control devices, power quality monitoring modules and other accessories to form a complete high-end intelligent protection system.
If you need detailed technical parameter tables, installation drawings, cross-border project adaptation solutions, solutions for ultra high load scenarios or sample applications, you can contact the manufacturer’s technical team for exclusive support. In addition, the product supports global operation and maintenance services, providing on-site installation, debugging, and operation guidance for cross-border projects to ensure smooth project progress.
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Specification
| Item | Unit | Data | |
| Rated voltage | kV | 17.5 | |
| Main circuit lightning impulse withstand voltage (Same,relative/between fracture surfaces) (peak value) | kV | 95 | 110 |
| Main circuit 1-minute power frequency withstand voltage (Same,relative/between fracture surfaces) (peak value) | kV | 38 | 45 |
| 1-minute power frequency withstand voltage of auxiliary circuit | kV | ||
| Rated current | A | 630 | |
| Transfer current | A | 870 | |
| Rated short-circuit closing current (peak) | kA | 50 | |
| Rated short-time withstand current | kA | 20 | |
| Rated short-circuit duration | S | 3 | |
| Rated peak withstand current (peak) | kA | 50 | |
| Grounding switch closing current (peak) | kA | 20 | |
| Peak withstand current of grounding switch (peak) | kA | 50 | |
| Mechanical lifespan of load switch | times | 3000 | |
| Mechanical lifespan of grounding switch | times | 2000 | |
| Rated pressure of arc extinguishing chamber (20 °C) | bar | 1.45 | |
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FAQs
What are the differences in core upgrade points and applicable scenarios between FLN36-17.5KV and FLN36-15KV products?
The core upgrade points are concentrated in four aspects: firstly, voltage and frequency. 17.5KV supports dual frequency adaptation, suitable for cross-border scenarios, while 15KV only supports 50Hz, suitable for domestic scenarios; The second is power carrying, with 17.5KV supporting a super high current of 1600A and a short-term withstand current of 50kA, providing stronger carrying capacity; The third is the operating mechanism, which adopts F-type four spring mechanism for 17.5KV, with a mechanical life of 1800 times, and adds automatic operation and maintenance function; The fourth is the protection level, with a 17.5KV rating of IP68, which can withstand short-term deep water immersion and has stronger environmental adaptability. Applicable scenario differences: 15KV is suitable for domestic long-distance distribution networks, while 17.5KV is suitable for high-end special scenarios such as cross-border projects, ultra large loads, and extreme environments.
This product supports 50/60Hz dual frequency adaptation. What additional adaptation adjustments are required when exporting cross-border projects?
Cross border export projects do not require large-scale renovation, only three points of adaptation need to be done: first, adjust the operating voltage, customize AC220V/AC110V/DC220V operating voltage according to the requirements of the target country/region, and ensure it matches the local distribution system; The second is certification and document adaptation, providing testing reports and certification documents that comply with local standards (such as EU CE certification, Middle East SASO certification), and supporting installation manuals and operation manuals in multiple languages (English, Arabic, etc.); The third is environmental adaptation. Based on the target area’s environment, customized versions for high temperature, high cold, and strong corrosion prevention are available to ensure that the product adapts to extreme local environments. At the same time, communication protocols are debugged to ensure seamless integration with the local distribution network system.
The product supports three levels of rated current selection. How to choose based on the load requirements of cross-border projects?
The core of selecting cross-border projects depends on the project type and load capacity: firstly, for small multinational park and overseas institution projects with a load capacity of ≤ 630A, choosing the 630A version has a higher cost-effectiveness and can meet conventional power distribution needs; The second is medium-sized multinational industrial parks and new energy projects with a load capacity of 630A~1250A. The 1250A version is selected, which can carry medium power loads and is suitable for most multinational projects; The third is large-scale cross-border heavy industry and super large new energy base projects, with a load capacity of 1250A~1600A. The 1600A version is selected to carry super large loads, avoiding equipment failures caused by load overload. At the same time, automatic operation and maintenance modules are required to reduce cross-border operation and maintenance costs.
The product has a protection level of IP68 and can withstand short-term deep water immersion. How to prevent long-term water accumulation risks during outdoor installation?
To prevent long-term water accumulation during outdoor installation, two points should be taken into account: first, the installation site should be chosen, with high terrain, no long-term water accumulation, and smooth drainage to avoid equipment being soaked in water for a long time. At the same time, a simple rain shelter should be built to reduce direct rainwater erosion of equipment; The second is to install protection by installing a waterproof base at the bottom of the equipment, raising the installation height of the equipment (higher than the highest historical water level in the local area), and checking the sealing interface of the equipment to ensure a firm seal. Check the sealing components every 6 months, replace aging sealing components, calibrate leak detection sensors, ensure stable sealing performance of the equipment, and avoid equipment failures caused by long-term water accumulation.
The product supports automatic operation and maintenance functions. What specific operation and maintenance operations can be implemented? How to ensure the accuracy of automatic operation and maintenance?
The automatic operation and maintenance function can achieve three core operations: first, automatic lubrication and calibration of the operating mechanism, regular lubrication of the mechanism, and calibration of the opening and closing accuracy; Secondly, SF6 gas automatic monitoring and replenishment, real-time monitoring of gas pressure and purity, and automatic issuance of pressure replenishment reminders when the pressure is insufficient; The third is automatic troubleshooting and warning, which automatically detects the operating status of equipment, locates and uploads faults in a timely manner to the background, and issues warning reminders. To ensure accuracy, two things need to be done: first, strict calibration of the automatic operation and maintenance module before leaving the factory to ensure accurate parameters; Secondly, during daily operation and maintenance, the automatic operation and maintenance module should be calibrated every 12 months to update operation and maintenance parameters, avoid operation and maintenance deviations caused by module aging, and ensure normal communication and accurate data transmission between the equipment and the backend monitoring system.
Related Applications
Power distribution support for cross-border high-end projects: Suitable for cross-border industrial parks, large-scale overseas projects, international aid power projects and other cross-border high-end scenarios, such as projects in Europe and the Middle East that adopt 17.5KV, 50/60Hz power distribution standards. This product can be used as a core switch equipment to be responsible for the control and protection of medium and high voltage power distribution in project areas and infrastructure. The dual frequency and multi voltage adaptation characteristics can be perfectly compatible with local power distribution standards and can be put into use without additional modification. The IP68 high protection level can adapt to extreme environments in different countries, and the high-end intelligent function can achieve cross-border remote operation and maintenance, reduce project operation and maintenance costs, and help cross-border projects smoothly advance.
Large scale new energy base super load distribution: Used for super load distribution systems in large centralized photovoltaic power stations, offshore wind farms and other new energy bases, installed in the distribution room of the new energy base booster station, responsible for boosting the power generated by the new energy power generation equipment to 17.5KV and transmitting it to the national power grid or cross-border transmission main line. The 1600A super power version can bear the super load power supply demand of the new energy base, and the dual arc adsorption device can ensure safe and stable arc extinguishing. The environmental adaptability can cope with the complex outdoor environment of the new energy base (strong winds, high ultraviolet rays, large temperature difference between day and night), ensuring stable transmission of new energy power.
Extreme environment high-end distribution network: Used for high-end distribution network systems in extreme environments such as high cold, high altitude, and strong corrosion, such as northern extremely cold areas (below -45 ℃), high-altitude areas (below 4500m), coastal areas with strong salt spray corrosion, and core areas of chemical parks. The extreme environment adaptation version of the product can adapt to extreme high and low temperature, low pressure, strong corrosion and other working conditions. The IP68 protection level can ensure the normal operation of equipment in extreme environments, and the 17.5KV voltage level can meet the high-end distribution needs in extreme environments. The intelligent remote operation and maintenance function can reduce the difficulty of on-site operation and maintenance in extreme environments, ensuring the stable operation of distribution networks in extreme environments.
Long distance power distribution for heavy industry: Suitable for long-distance power distribution systems in large heavy industrial plants (such as large metallurgical plants, heavy machinery plants, and large mines). These scenarios have high electrical loads, frequent load fluctuations, and complex working conditions such as strong corrosion and vibration. The 17.5KV voltage level can reduce long-distance power distribution losses, and the 1600A ultra high power version can bear the high load requirements of large production equipment in heavy industry. The dual locking and automatic operation and maintenance functions of the F-type operating mechanism can avoid production interruptions caused by faults. The high-end anti-corrosion shell can resist the strong corrosion and vibration effects of industrial scenarios, ensuring continuous and stable production in heavy industry.
