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FLN36-15
FLN36-15 SF6 Load Break Switch
FLN36-15KV SF6 load switch is an indoor/outdoor universal AC high voltage switchgear developed specifically for the upgrading of medium and high voltage distribution networks and high-power long-distance distribution. It uses high-purity SF6 gas as the insulation and arc extinguishing medium, and is strictly developed and manufactured in accordance with GB3804-2004, GB16926-2009, and IEC 62271-105 standards. The rated voltage is 15KV, the rated frequency is 50Hz, the rated current is 630A/1250A, and the mechanical life is ≥ 1500 cycles. The product adopts a high-strength epoxy resin integral casting sealing structure, matched with a weather resistant and anti-corrosion alloy shell, and equipped with an E-type three spring energy storage operating mechanism, which can achieve precise linkage and fault locking of the “closing opening grounding” three positions. The incoming and outgoing lines support multi mode adaptation of cables, busbars, and overhead lines, and are suitable for installation forms such as ring main units, prefabricated substations, outdoor switch stations, long-distance distribution network terminal stations, etc. The core is used for load control and equipment protection in long-distance transmission of medium and high voltage distribution networks, high-power park distribution, and distribution network upgrade and renovation scenarios. It can reliably disconnect normal load current, cable charging current, no-load transformer current, and short-circuit transfer current, and is the core preferred equipment for 15KV voltage level distribution networks that balances reliability and economy.
Features
1. Long distance distribution adaptation with excellent loss control:
Specially optimized for 15KV voltage level, the insulation gap and conductor cross-section accurately match the long-distance distribution needs. Compared with 12KV products, the transmission loss of the line is reduced by more than 18%, which can effectively reduce the energy loss during long-distance distribution process. It is suitable for long-distance distribution network branches in suburban and industrial parks, without the need for additional boosting equipment, reducing the construction cost of the distribution network.
2. Flexible power carrying and adaptability to multiple scenarios:
The rated current supports 630A/1250A bidirectional selection, and the rated short-time withstand current is increased to 45kA/3s, which can flexibly adapt to conventional high-power scenarios and high-end high-power scenarios. It can not only meet the power distribution needs of ordinary parks, but also carry high load power supply for large production equipment and new energy clusters, with more flexibility in adaptability.
3. Upgraded insulation arc extinguishing adaptation with outstanding stability performance:
Ultra high purity SF6 gas (purity ≥ 99.999%) is used as the insulation and arc extinguishing medium, and the rated pressure is increased to 0.075MPa at 20 ℃. The arc extinguishing chamber adopts an efficient multi fracture arc extinguishing structure+arc adsorption device, and the arc extinguishing efficiency is increased by 10% compared to 12KV products. It can reliably meet the breaking requirements of various complex load currents at 15KV level. The SF6 gas leakage rate is ≤ 1 × 10 ⁻⁸ Pa · m ³/s, and the insulation performance is stable during long-term operation, eliminating the risk of insulation breakdown.
4. Optimization of operating mechanism and improvement of operation and maintenance convenience:
Equipped with an E-type three spring energy storage operating mechanism, the locking structure is optimized based on the D-type mechanism, and a dual protection of “fault opening locking+closing anti misoperation” is added. The opening time is ≤ 14ms, and the mechanical life is maintained for 1500 cycles. It supports four operation modes: manual, electric, remote control, and intelligent linkage. The electric operation adds a one key operation and maintenance function, which can remotely complete mechanism calibration and greatly reduce on-site operation and maintenance costs.
5. Wide environmental adaptability and excellent weather resistance:
The shell is made of high-strength epoxy resin integral casting and weather resistant anti-corrosion alloy shell, with a protection level of up to IP67. The applicable environmental temperature range can be extended to -40 ℃~+55 ℃, and the altitude can be extended to 4000m. It can withstand extreme environments such as strong ultraviolet rays, strong corrosion, and high and low temperature impacts. Outdoor outdoor installation does not require additional protection and is suitable for multiple scenarios such as suburban areas, high altitudes, and industrial parks.
The product has a rated peak withstand current of 105kA, a rated lightning impulse withstand voltage of 160kV between phases and to ground, and 180kV between faults. It also has a rated short-time power frequency withstand voltage of 100kV between phases and to ground, and 110kV between faults. The rated active load breaking current is 630A/1250A, the rated cable charging current is 300A, the no-load transformer capacity can be broken is 4500kVA, and the rated short-circuit transfer current is 35kA.
The SF6 gas rated pressure (gauge pressure at 20 ℃) is 0.075MPa, equipped with gas density relay, sound and light alarm device, leakage online detection sensor, and arc adsorption device. When the pressure is below 0.065MPa, 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, high and low temperature impacts, and direct ultraviolet radiation; The implementation standards include GB3804-2004, GB16926-2009, IEC 60265-1, and IEC 62271-105.
The product can be customized with high-power versions (1250A), high-altitude versions, strong corrosion adaptation versions, and intelligent upgrade versions. It can be equipped with fuses, lightning arresters, current transformers, voltage transformers, intelligent measurement and control devices and other accessories to form a complete intelligent protection system. If you need detailed technical parameter tables, installation drawings, long-distance distribution adaptation plans or sample applications, you can contact the manufacturer’s technical team for exclusive support.
In addition, the product supports digital upgrading of distribution networks and can be equipped with a line loss monitoring module to collect real-time power loss data during transmission, providing data support for energy-saving optimization of distribution networks; It can be equipped with intelligent operation and maintenance terminals to achieve comprehensive monitoring of equipment operation status and precise fault location, further improving the refinement level of distribution network operation and maintenance.
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Specification
| Item | Unit | Data | |
| Rated voltage | kV | 15 | |
| 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 core differentiation advantages of FLN36-15KV compared to FLN36-12KV products?
The core differentiation focuses on three points: firstly, adaptation scenarios. 15KV products are designed specifically for long-distance power distribution, reducing line losses by more than 18% without the need for additional boosting equipment, and are suitable for long-distance distribution networks in suburban and industrial parks. 12KV products are mainly suitable for short distance distribution in urban core areas; The second is voltage and carrying capacity. The rated air pressure of 15KV products has been increased to 0.075MPa, with a short-term withstand current of 45kA. The carrying capacity and insulation performance are more suitable for the voltage loss requirements of long-distance distribution; The third is protection and maintenance. The 15KV product adopts a weather resistant and anti-corrosion shell, with added dual locking protection and one key maintenance function. It has stronger outdoor weather resistance, more convenient maintenance, and is more suitable for complex suburban environments.
This product supports a rated current of 630A/1250A. How to choose in long-distance distribution scenarios?
The core of selecting long-distance power distribution scenarios depends on transmission distance and load capacity: firstly, transmission distance ≤ 10km and load capacity ≤ 630A (such as suburban residential distribution network and small park distribution network), choosing the 630A version is sufficient, which has higher cost-effectiveness and can meet the needs of conventional long-distance power distribution; Secondly, if the transmission distance is greater than 10km and the load capacity is 630A~1250A (such as long-distance distribution network in large industrial parks and new energy cluster transmission), choosing the 1250A version can effectively reduce conductor heat loss and avoid equipment failure caused by load overload. At the same time, a line loss monitoring module is required to monitor the real-time power loss situation.
The product has a protection level of IP67. How to extend its service life in urban and suburban environments with frequent sandstorms and strong ultraviolet radiation?
To extend the service life, two points need to be done well in operation and maintenance: first, regular cleaning, cleaning the dust and sand on the equipment casing every three months to avoid dust accumulation affecting heat dissipation and insulation performance. Check the anti-corrosion coating on the casing once a year, and if it falls off, reapply it in a timely manner; The second is to regularly inspect the seals, checking SF6 gas seals every 6 months, replacing aging seals, and calibrating leak detection sensors to ensure stable sealing performance; In addition, a sunshade and dust cover can be installed to reduce the aging effect of strong ultraviolet radiation on the shell, without the need for additional sealing protection, making it suitable for complex suburban environments.
The product has added dual locking protection. How to handle emergency situations if the locking fails?
When the lock fails, it is strictly prohibited to forcefully operate it. Emergency response steps: First, cut off the control power supply and line power supply of the equipment, confirm that the equipment is in the open and grounded state, and avoid safety accidents caused by misoperation; The second is to inspect the locking mechanism and check for dust, debris, or aging of the locking spring. If it is stuck, clean the debris and restart the equipment; If the spring is aging, it is necessary to contact professional technicians to replace the locking spring, calibrate it, and then put it into use; It is strictly prohibited to disassemble the locking mechanism by oneself to avoid damaging the equipment.
What are the special requirements for supporting equipment that can adapt to the transmission scenario of new energy clusters?
In the transmission scenario of new energy clusters (such as centralized photovoltaic and wind power clusters), the supporting equipment must meet two requirements: first, the supporting fuses and lightning arresters must be adapted to a voltage level of 15KV, and the rated current should match the load capacity of the new energy cluster (recommended to be 20% higher than the load capacity), which can effectively protect the equipment from short circuits and lightning strikes; Secondly, intelligent linkage modules are required to support seamless linkage with the new energy generation monitoring system, achieving load allocation and rapid fault isolation. At the same time, a power quality monitoring module should be installed to monitor voltage and frequency stability in real time, avoiding the impact of new energy generation fluctuations on the distribution network.
Related Applications
Suburban medium high voltage long-distance distribution network: As the core switch equipment of the suburban medium high voltage long-distance distribution network, it is installed in the suburban distribution network terminal station and outdoor switching station. It is responsible for reducing the voltage of 110KV/35KV high voltage in the urban core distribution network (15KV) and transmitting it over long distances to suburban residential areas and township industrial parks. The 15KV voltage level can effectively reduce transmission losses, avoid voltage drops caused by long-distance distribution, and adapt to the long-distance distribution needs of 10km~20km in the suburbs. At the same time, its high protection performance can adapt to the windy and strong ultraviolet environment in the suburbs, ensuring stable power supply for suburban residents’ lives and township industrial production.
Long distance power distribution in large industrial parks: Used for long-distance power distribution systems in large industrial parks (such as equipment manufacturing parks and chemical parks), installed in the ring main unit and prefabricated substation of the park’s power distribution station, responsible for converting high voltage electricity into 15KV medium high voltage electricity, and distributing it over long distances to various production workshops and storage areas in the park. The 1250A high-power version can bear the power load of large production equipment, compressors and other high-power equipment in the park. The advantage of long-distance loss control can reduce energy waste, and the intelligent linkage function can achieve unmanned operation and maintenance of the park’s power distribution network, ensuring continuous and stable production in the industrial park.
Supporting transmission of new energy clusters: Suitable for centralized photovoltaic power stations, large wind farms and other new energy clusters, the supporting transmission system is installed in the distribution room of the new energy power station booster station, responsible for boosting the power generated by the new energy generation equipment to 15KV and transmitting it over long distances to the main line of the national power grid. The high reliability and environmental adaptability of the product can adapt to the complex outdoor environment of the new energy power station (strong winds, high ultraviolet rays, large temperature difference between day and night), and the high-power carrying capacity can meet the high load transmission needs of the new energy cluster. At the same time, it can be equipped with power quality monitoring modules to ensure the stable integration of new energy power into the grid.
Long distance distribution network in high-altitude areas: Used for long-distance distribution network systems in high-altitude areas (such as high-altitude towns and mining areas), the high-altitude adaptation version of the product can adapt to low pressure and low temperature environments below 4000m, and the strengthened insulation structure can ensure that the insulation performance meets the standard at a voltage level of 15KV. It is installed in outdoor switch stations in high-altitude areas, responsible for long-distance distribution of residential and industrial production in high-altitude areas, solving the problem of adapting distribution network equipment in high-altitude areas. At the same time, the intelligent remote operation and maintenance function can reduce the difficulty of on-site operation and maintenance in high-altitude areas, ensuring the stable operation of distribution network in high-altitude areas.
