ZW17-40.5Series Outdoor High-volt Vacuum Circuit Breaker

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 300 unit/month

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Specifications

LW30-126 126kv SF6 Circuit Breaker

1 Overview
LW30-126/145/3150-40 SF6 high-voltage AC circuit breaker is of 3-phase 50Hz high-voltage switchgear,used for the control and protection of 126kV/145kV power distribution and transmission system,as well as being used as the network interconnected circuit breaker and in the places switching capacit or bank.
2 Service and Installation Conditions
Ambient temperature: -30°C~+40°C (special order - 50°C~+40°C)
Altitude:≤1000m(No limitation for special order)
Humidity:
Relative humidity at average per day (25°C): ≤95%
Relative humidity at average per month: ≤90%
Saturation vapour pressure: Daily average ≤2.2×10MPa
Monthly average ≤1.8×10MPa
Wind pressure: ≤700Pa
Icing thickness: 10mm
Seismic intensity:
Horizontal acceleration: ≤0.3g
Vertical acceleration: ≤0.15g
Sunshine intensity: 0.1w/cm (at wind velocity of 0.5m/s)
Max. daily temperature rise: 25°C
Symmetrical Creepage distance: 31mm/kV
Protection class: IP54
Keep the breaker away from places with combustible, explosive, corrosive materials and violent vibrations.

Q: What are the general requirements for working on distribution equipment?: When the high voltage line is not cut off, the person in charge of the work shall explain to the whole staff that there is electricity on the line and strengthen the monitoring

Q: Transmission system and distribution system: Distribution system is the power supply to the distribution load for the purpose of the general voltage level of not more than 10KV

Q: What is the difference between power supply and distribution: The problem is you estimate from the injection test out the electric power, is the power system of power plant and the national grid is responsible for part of the design, the design of power plant and power lines, its design must be designed by a qualified electric power design institute

Q: Are electric wires and cables belong to distribution equipment?: Wire rod products for the transmission of electric (magnetic) energy, information and electromagnetic energy conversion.

Q: Transmission lines are not electrical equipment?: Transmission lines in the power transmission project belongs to the carrier, belonging to the power cable category, should not be called equipment

Q: An introduction to the interpretation of flexible AC transmission systems: The parallel compensation device, such as static var compensator (SVC), thyristor controlled braking resistor (TCBR), static

Q: Main equipment of high voltage direct current transmission: The utility model comprises a converter, a converter transformer, a smoothing reactor, an AC filter, a DC lightning arrester and a control protection device.

Q: Rural high voltage transmission line equipment ownership: High voltage transmission line, one end of the power plant (power), the other end of the number of users in the use of electricity, of course, the current

Q: Difference between distribution voltage and supply voltage: In general, the city substation will be reduced to 10KV 110KV to the electrical terminal.