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FLN36-12
FLN36-12 SF6 Load Break Switch
FLN36-12KV SF6 load switch is an indoor/outdoor universal AC high voltage switchgear specially developed for high-end main scenarios of medium and high voltage distribution networks and intelligent distribution network upgrades. It uses high-purity SF6 gas as the insulation and arc extinguishing medium, strictly follows GB3804-2004, GB16926-2009, IEC 62271-105, and IEC 61850 standards for research and development and manufacturing, with a rated voltage of 12KV, a rated frequency of 50Hz, a rated current of 630A/1250A optional, and a mechanical life of ≥ 1500 cycles. The product adopts a high-strength epoxy resin integral casting sealing structure, matched with a corrosion-resistant alloy shell, and equipped with a D-type three spring energy storage operating mechanism, which can achieve precise linkage operation of “closing opening grounding” three positions, supporting intelligent remote control, data acquisition and linkage regulation. The incoming and outgoing lines support multi-mode adaptation of cables, busbars, overhead lines, and can adapt to various installation forms such as ring main units, prefabricated substations, outdoor switch stations, intelligent distribution stations, etc. The core is used for high-power distribution control and equipment protection of the core nodes of medium and high voltage distribution network backbone lines, intelligent distribution networks, large high-end industrial and large public facilities. It can rely on breaking normal load current, cable charging current, no-load transformer current and short-circuit transfer current, and is an intelligent high-end medium and high voltage distribution network. The core equipment for high-power upgrade.
Features
1. High end voltage adaptation and power carrying upgrade:
Specially designed for the 12KV high-end medium and high voltage level, the insulation structure and arc extinguishing system are fully strengthened according to the 12KV voltage standard. The rated current supports 630A/1250A bidirectional selection, and the rated short-time withstand current is increased to 40kA/3s, which can carry higher power distribution loads and adapt to the high-power distribution needs of core nodes of medium and high voltage distribution networks, large high-end industries, and large public facilities. Compared with 10KV and 11KV products, the power carrying capacity is increased by more than 27%, which can cope with more complex load scenarios.
2. High end operation mechanism, dual improvement of service life and accuracy:
equipped with D-type three spring energy storage operation mechanism, adopting a new transmission structure, the synchronization and accuracy of opening and closing actions are greatly improved (opening time ≤ 15ms), and the mechanical life is extended to 1500 cycles, which is 25% higher than 10KV and 11KV products, and can adapt to high-frequency and high reliability load switching scenarios; Supports four operation modes: manual, electric, remote control, and intelligent linkage. The electric operation adopts PLC intelligent control module, which can achieve operation automation, log recording, fault tracing, and adapt to the unmanned and remote control needs of intelligent distribution network.
3. Top level insulation and arc extinguishing configuration, with full safety performance:
using ultra-high purity SF6 gas (purity ≥ 99.999%) as the insulation and arc extinguishing medium, the rated pressure is increased to 0.07MPa at 20 ℃. The arc extinguishing chamber adopts a new high-efficiency multi fracture arc extinguishing structure, matched with an arc adsorption device, and the arc extinguishing efficiency is increased by 30% compared to 10KV products. It can quickly and reliably cut off various complex load currents and short-circuit transfer currents at the 12KV level. There is no open flame, harmful emissions, or arc leakage during the arc extinguishing process; The overall sealing structure is optimized, paired with a corrosion-resistant alloy shell, with a leakage rate of ≤ 1 × 10 ⁻⁸ Pa · m ³/s, and insulation performance is not affected by extreme environments, eliminating safety hazards such as insulation breakdown and arc extinguishing failure.
4. High level of intelligent integration and adaptation to distribution network upgrades:
Equipped with high-end intelligent monitoring and linkage modules, fully supporting IEC 61850 communication protocol, it can seamlessly link with distribution network intelligent systems and IoT platforms to achieve real-time collection, uploading, and analysis of SF6 gas pressure, leakage status, equipment operation status, line current voltage and other data. It supports remote debugging, remote operation and maintenance, fault warning, intelligent linkage regulation, and can automatically cooperate with distribution network systems to achieve load allocation and fault isolation, adapting to the needs of high-end intelligent distribution network upgrades.
5. Strong protection and compatibility, suitable for high-end scenes:
the shell is made of high-strength epoxy resin cast integrally+anti-corrosion alloy shell, and the protection level can reach IP67, which can effectively resist rainstorm, strong wind, dust, ultraviolet ray, corrosive gas and external impact. Outdoor installation does not require additional protection; The applicable environmental temperature range can be extended to -40 ℃~+55 ℃, and the altitude can be extended to 4000m, which can adapt to extreme high-end scenarios such as high altitude, high temperature, high cold, and strong corrosion; The incoming and outgoing lines support multiple ways of adaptation and can be linked with various high-end distribution equipment, with strong compatibility. They can be integrated into existing high-end distribution network systems without the need for large-scale renovation.
The product has a rated peak withstand current of 100kA, a rated lightning impulse withstand voltage of 150kV between phases and to ground, 170kV between faults, a rated short-time power frequency withstand voltage of 95kV between phases and to ground, and 105kV between faults. The rated active load breaking current is 630A/1250A optional, the rated cable charging current is 120A, the no-load transformer capacity can be disconnected is 4000kVA, and the rated short-circuit transfer current is 31.5kA.
The SF6 gas rated pressure (gauge pressure at 20 ℃) is 0.07MPa, equipped with gas density relay, sound and light alarm device, leakage online detection sensor, and arc adsorption device. When the pressure is below 0.06MPa, 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, IEC 62271-105, and IEC 61850.
The product can be customized with high-power versions (1250A), extreme environment adaptation versions, high-end intelligent upgrade versions, and can be equipped with fuses, lightning arresters, current transformers, voltage transformers, intelligent measurement and control devices and other accessories to form a complete high-end intelligent protection system. If you need detailed technical parameter tables, installation drawings, intelligent linkage solutions, high-power scenario adaptation solutions or sample applications, you can contact the manufacturer’s technical team for exclusive support.
In addition, the product supports intelligent upgrade and expansion, and can be equipped with infrared temperature measurement modules and partial discharge detection modules to achieve comprehensive monitoring of equipment operation status; It can be equipped with intelligent control devices to achieve on-site visual operation, status display, and fault diagnosis, further improving the convenience and intelligence level of operation and maintenance, and meeting the intelligent and refined operation and maintenance needs of high-end distribution networks.
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Specification
| Item | Unit | Data | |
| Rated voltage | kV | 12 | |
| Main circuit lightning impulse withstand voltage (Same,relative/between fracture surfaces) (peak value) | kV | 75 | 85 |
| Main circuit 1-minute power frequency withstand voltage (Same,relative/between fracture surfaces) (peak value) | kV | 28 | 32 |
| 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 upgrade highlights of FLN36-12KV compared to FLN36-10KV and 11KV products?
The highlights of the core upgrade are concentrated in four points: first, power carrying, with a rated current of 1250A and a short-term withstand current of 40kA, which is significantly improved compared to 10KV and 11KV products and suitable for high-power scenarios; The second is the operating mechanism, a D-type three spring mechanism with a mechanical lifespan of 1500 times, higher operating accuracy, and support for intelligent linkage operation; Thirdly, it is intelligent and fully supports the IEC 61850 protocol, which can seamlessly integrate with the distribution network intelligent system to achieve comprehensive monitoring and remote control; The fourth is protection and adaptation, with a protection level of IP67 and a wider range of environmental adaptability. It supports multiple input and output methods and is suitable for high-end scenarios. At the same time, the insulation and arc extinguishing configurations have been fully upgraded, resulting in better safety performance.
The rated current of this product supports 630A/1250A optional. How to choose according to actual needs?
The selection criteria mainly depend on the actual distribution load capacity: firstly, in conventional high-power scenarios (such as large public facilities and mid-range industries), if the load capacity is within 630A, the 630A version can be selected for higher cost-effectiveness; The second is high-end high-power scenarios (such as large high-end industrial and core nodes of distribution network backbone), with a load capacity exceeding 630A but not exceeding 1250A. Choosing the 1250A version can ensure that the equipment can stably carry the load and avoid faults caused by load overload; When selecting, it is necessary to combine the calculation results of the line load. The manufacturer can provide professional selection suggestions to ensure that the product matches the actual needs accurately.
The product supports the IEC 61850 communication protocol. What should be noted when connecting to existing distribution network intelligent systems?
When connecting, three points should be noted: first, confirm the communication protocol version of the existing distribution network intelligent system. This product supports the IEC 61850-6/IEC 61850-8-1 standard protocol and is compatible with the vast majority of mainstream intelligent systems. If the system protocol version is different, the manufacturer can provide protocol adaptation and debugging services; The second is to confirm the communication wiring method, connect the communication lines correctly according to the product installation manual and system requirements, ensure that the wiring is firm and not loose, and avoid communication failures; Thirdly, after integration, it is necessary to calibrate the communication parameters of the equipment to ensure that data collection, uploading, and control functions are normal, achieve seamless linkage with the system, and at the same time, do a good job in communication security protection to avoid data leakage or interference.
The mechanical life of this product can reach 1500 cycles. How to extend the service life of the equipment after long-term high-frequency operation?
To extend the service life, three maintenance points need to be done: first, regularly inspect the operating mechanism, lubricate and calibrate the mechanism every 12 months, replace aging springs and auxiliary contacts, and ensure flexible and accurate operation of the mechanism; The second is to regularly monitor the status of SF6 gas, calibrate the leak detection sensor every 6 months, check the gas purity once a year, replenish gas in a timely manner, replace seals, and ensure stable sealing and insulation arc extinguishing performance; The third is to regularly clean the equipment casing and internal components to avoid the accumulation of dust and debris that may affect the operation of the equipment. At the same time, environmental protection measures should be taken to prevent the equipment from being exposed to extremely harsh environments for a long time, which can further extend the overall service life of the equipment.
The product has a protection level of IP67 and can withstand strong corrosion environments. What specific strong corrosion scenarios can it be adapted to?
The strong corrosion scenarios that can be adapted include: core areas of chemical industrial parks (with strong corrosive gases and liquid volatilization), coastal areas (high salt spray corrosion), metallurgical plant areas (corrosive dust and flue gas), and other strong corrosion scenarios. This product adopts a corrosion-resistant alloy shell and reinforced sealing structure, which can effectively resist the invasion of corrosive media and prevent the corrosion and aging of the shell and internal components; But in extremely strong corrosion scenarios, it is recommended to install additional anti-corrosion protective covers and shorten the operation and maintenance cycle. Check the equipment corrosion situation every 6 months and take timely protective measures to ensure stable operation of the equipment.
Related Applications
Core node of medium and high voltage distribution network backbone: As the core switch equipment of the urban medium and high voltage distribution network backbone node, it is installed in the outdoor switch stations and intelligent distribution stations of the urban core area and distribution network hub. It is responsible for the distribution, load regulation, and fault isolation of the backbone line after 110KV/35KV high-voltage voltage reduction (12KV). The 12KV voltage level can reduce line losses, and the high-power carrying capacity can meet the high load demand of the core node. The intelligent linkage function can seamlessly cooperate with the distribution network intelligent system to achieve load allocation and rapid fault handling, ensuring the reliability and continuity of power supply in the core area of the urban distribution network, and helping to upgrade the intelligent distribution network of the city.
Main distribution network of large high-end industrial plants: used for the main distribution network system of large high-end industrial plants (such as high-end electronic manufacturing plants, precision machinery manufacturing plants, and large petrochemical plants), installed in the ring main unit and prefabricated substation of the core distribution station in the plant area, responsible for the distribution control and protection of high-power production equipment and precision equipment in the plant area. The 12KV voltage level can meet the high reliability and high-precision power supply needs of high-end industries, and the high-power version can carry high loads in the plant area. The intelligent monitoring and fault warning function can avoid production interruption caused by faults, and the strong corrosion protection performance can adapt to the complex environment of high-end industries such as petrochemicals and metallurgy, ensuring the continuous and stable production of high-end industries.
Main distribution system for large high-end public facilities: Suitable for the main distribution system of large high-end public facilities (such as international airport terminals, large sports venues, high-end office buildings, and large exhibition centers), installed in the underground intelligent distribution station of public facilities, responsible for the distribution control and protection of high-power and high-precision equipment such as central air conditioning, elevators, lighting systems, emergency power supply equipment, and precision monitoring equipment. High reliability can ensure the electrical safety of public facilities during peak pedestrian flow and large events. The intelligent unmanned function can reduce the pressure of property operation and maintenance. The IP67 protection level can adapt to the humid and dusty environment of underground distribution stations, avoiding equipment failures caused by environmental factors.
