SF6 Load Break Switch

SF6 Load Break Switch

Product Description

Company Info

Product Description

1. General
FLN38 switches are suitable to be used in the ring-main power supplying system for making, breaking the load current and over-load current. They also can be used to make and break unloaded transformer, capacitor bank, etc. The switches are SF6 medium voltage devices with monitoring windows, which are researched and developed by Tellhow with the international advanced theory of arc extinction and operational device. Features are as follows:

1. Safety:
Inspection window for conveniently observing the gap state
Reliable interlocking device
Without corrosion and leakage
Vacuum-injected enclosure of epoxy resin
Pressure-release channel
Enlarged insulation creepage distance

2. Applicability:
Compact structure
Convenient installation
2 positions or 3 positions( optional)

3. Reliability:
Passed class E3 closing and breaking test
Passed the low-temperature test -30 degree
Passed the breaking test under zero gauge pressure
High-reliable operating device

4. Economical efficiency:
Long lifespan
High value for cost
Free maintenance
Used widely

2. Normal Service Condition
Ambient temperature: -25 degree ~ +40 degree
Altitude: ≤1000m
Relative humidity: Daily average relative humidity ≤ 95%; Monthly average relative humidity ≤ 90%
Free from fire, explosion, heavy pollution, chemical corrosion and severe vibration.
Earthquake intensity ≤ 8 degree
If the service condition differs from the above, the user should consult it with manufacturer.

3. Technical Parameters
FLN38 FLRN38
Rated voltage kV 12
Rated frequency Hz 50(60)
Rated short-time power frequency withstand voltage kV 42
Rated lightning impulse withstand voltage kV 75
Rated current A 630 125
Rated short-time withstand current/duration (including earthing switch) kA/S 25/2
Peak withstand short-circuit current kA 63 125
Mechanical lifespan (load switch) times 5000
Mechanical lifespan (earthing switch) times 2000
Rated SF6 gas pressure (gauge data at 20 degree) MPa 0.045+/-0.005
Annual leakage ratio of SF6 gas ≤1%
Distance between different phases mm 210+/-2
Overall dimension (width*height*depth) mm 305x382x735
Address: Tellhow Industrial Park, Hi-Tech Industrial Area, Shenzhen, Guangdong, China
Business Type: Manufacturer/Factory
Business Range: Electrical & Electronics
Company Introduction: Tellhow (Shenzhen) Electric Technologies Co., Ltd. is a leading high-tech company in electric power technologies field, which belongs to Chinese well-known Enterprise Group of Tsinghua University. It is a controlled subcompany of Tellhow Sci-tech Co., Ltd (stock No.: 600590) which is a listed company in Shanghai Stock Exchange.

Our company is one of the companies who first developed and manufactured cable tapping boxes and intelligent switching station in China. With many years of independent researching, development and innovation, our company have a full range of product categories, which consist of Indoor Vacuum Circuit Breakers, SF6 Load Break Switchs, Ring Main Units, MV & LV Switchgear Assemblies, Pre-installed Substations, etc.

We have 2 modern manufacturing bases with R&D and marketing centers in Shenzhen (Guangdong) and Nanchang (Jiangxi). They are Tellhow Sci-tech (Nanchang Xiaolan) Industrial Park and Tellhow Sci-tech (Shenzhen Guanlan) Industrial Park. The former specializes in designing and manufacturing of medium and low voltage intelligent switchgears and electric equipments for intelligent buildings, the latter is an integrative industrial park which integrates technical development, manufacturing, international marketing and service. We have very powerful R&D ability and capital support, as well as experienced and talented employees.

Our brand "TELLHOW" is a China Well-known Trademark, awarded by State Administration For Industry and Commerce. In the course of striding towards modern enterprise management, we have passed the authentication of:

ISO9001: 2000 Quality Management System,
ISO14001 Environmental Management System,
OHSAS18000 Occupational Health and Safety Assessment System,
Chinese CCC Certification,
ERP Physical Distribution management System,
CRM Customer Relationship Management System.

During the past, we have had good cooperation with overseas industry leaders, such as ABB, Schneider, Simens, etc...In the future, we shall be very glad to know new business partners and establish good relationship with them. Warmly welcome to contact with us Now!
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