Outdoor H.V. A.C. dead tank SF6 gas circuit breaker is a new kind of circuit breaker with self-blast interrupter and spring operating mechanism,on the basis of technology of product imported from Mitsubishi, Japan.
The latest achieve-arc extinguishing principle of gas-blast pressure adapting with breaking-current is employed,by which most of energy required for breaking rated short-circuit current are acquired from arc itself. Therefore, the demand for operating power is reduced significantly. The three pole interrupters are placed inside three metal enclosures respectively. The circuit breaker can be mechanically three-phase gang-operated. Both remote electrical control and local manual control can be realized.
The spring operating mechanism, provided with the product, is a kind of mechanism with low operating power, minimum maintenance work needed and high reliability.
The product reaches international advanced level in the respect of main technical performance.
Max .wind velocity:≤35m/s
Pollution class:IV class
Ambient air temperature:-35ºC~40ºC(It's satisfied under condition of -40ºC in heavy cold area)
Max .temperature difference daily: 25K
Earthquake withstand density:9 degree
Ice coating: ≤10mm
Max. radiance from sun: 1000 W/m2
Rated Max. Voltage: 145 kV, rms
Rated Short-Circuit Current: 40 kA, rms
Rated Cont. Current: 2000 A, rms
Rated Power Frequency: 60 Hz
Rated Full Wave Lightning Impulse Withstand Voltage: 650 kV, peak
Rated Out of Phase Switching Current: 10 kA, peak
Rated Interrupting Time: 3 Cycles
Short Time Current Duration: 3 Sec.
Closing Time: Less Than 100 ms
Rated Operating Duty Cycle: O-0.3s-CO-15s-CO
Rated Voltage Range Factor: 1.0 K
Operating Mechanism Type: Motor-Spring
Normal SF6 Gas Pressure at 20 Deg. C: 72 PSIG
LOW SF6 Gas Pressure Alarm at 20 Deeg. C: 68 PSIG +/-
LOW SF6 Gas Pressure Lock-Out at 20 Deg. C: 65 PSIG +/-
Trip Circuit Source: Voltage Range: 70 to 140 VDC 10 A. At 125 VDC
Closing Circuit Source: Voltage Range: 90 to 140 VDC 10 A. At 125 VDC
Spring Charging Motor Circuit: 125 VDC 15 A.
Bushing Current Transformers
Nominal Secondary Rating: 5 Amps, 60 Cycles
Type: V, Taps: 200CA
Thermal Rating Factor: 2.0
Safety protection // Fine workmanship // Easy to install // Long life // Provide custom
Lawrence Electric Co., Ltd. is a high-tech enterprise focusing on power transmission and distribution products, providing customers with one-stop service of power transmission and distribution products.
It mainly produces and sells lightning arrester, insulator, fuse, isolation / load switch, SF6 / vacuum circuit breaker, power supply fittings, optical cable fittings, switch cabinet and other transmission and distribution products. The company has production bases and sales centers in Jiangxi, Zhejiang, Uganda, Tanzania and other places.
Our products have operated safely in the power supply systems of more than 20 countries and regions around the world for more than 10 years. They are also qualified suppliers of China State Grid and China Southern Power Grid. At present, they have gained a good reputation in the field of power system in the world.
We have received high-quality product recommendation letters from power supply companies in Kenya, Uganda, Tanzania, Zambia, Guinea, Ghana, Togo, Mozambique, Nepal, Guyana, Myanmar and other countries and regions.
OUR VISION: ONE STOP SERVICE FOR THE GLOBAL DISTRIBUTION AND SUBSTATION ELECTRICAL MATERIALS.
OUR VALUE: SUPERIOR QUALITY BUILDS THE FOUNDATION, EFFICIENT SERVICE WINS CUSTOMER’S CREDIT.
OUR SPIRIT: FOCUS ON TEAMWORK AND COLLABORATION
BRAVE IN EXPLORATION AND CREATIVITY
NEVER GIVE UP ON ANY COMPANY PERSONNEL
TO CREATE A BRILLIANT TOMORROW TOGETHER
CONDUCT CODE: LISTEN, SMILE, PRAISE, APPRECIATE
OUR RESPONSIBILITY: MAXIMIZE CUSTOMER’S PROFIT, CREATE GREAT CONDITION FOR STAFF,
MAKE CONTRIBUTIONS TO THE WHOLE WORLD ！。