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Zf12b-126 (L) gas insulated metal enclosed switchgear

Zf12b-126 (L) gas insulated metal enclosed switchgear is an outdoor three-phase AC 50Hz high-voltage transmission equipment, which is used in the power system with rated voltage of 110 kV Control, measure, protect and switch the transmission line.
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Product overview

Zf12b-126 (L) gas insulated metal enclosed switchgear is an outdoor three-phase AC 50Hz high-voltage transmission equipment, which is used in the power system with rated voltage of 110 kV Control, measure, protect and switch the transmission line.

Zf12b-126 (L) gas insulated metal enclosed switchgear is composed of several standard functional modules, such as circuit breaker, three station isolation grounding combination switch, fast grounding switch, current transformer, voltage transformer, cable connecting device, outgoing bushing, zinc oxide arrester, bus bar brief and bay control cabinet, These modules are connected together through finished flanges, and the connecting flanges of all modules are the same size, so that various modules can be combined arbitrarily to meet various design and layout requirements of users.

 

Use environment

◊ installation site: outdoor and indoor;

◊ ambient temperature: - 40 ° C ~ + 40 ° C;

◊ sunshine intensity: 1000W / m2 (noon on sunny days);

◊ altitude: no more than 2000m;

◊ air humidity: daily average not more than 95%, monthly average not more than 90%;

◊ wind speed: no more than 34m / S;

◊ seismic intensity: no more than 9 degrees;

◊ pollution level of external insulation: Grade III or IV.

 

Technical Parameter

 

​Project Company Parameter
Rated voltage kV 126
Rated current A 2000/3150
Rated frequency Hz 50
Rated short-time power frequency withstand voltage Again kV 230
Voltage (effective value of Imin) Fracture kV 230(+73)
Rated lightning impulse withstand voltage To the ground kV 550
(full wave 250 / 25003 peak) Fracture kV 550(+103)
Rated short-time withstand current (effective value) kA 40
ated short circuit duration s 4
Rated peak withstand current (peak) kA 100
Annual leakage rate of SF6 gas   <0.3%
Rated pressure of SF6 gas (gauge pressure 20'c) MPa MPa Air chamber of circuit breaker (including CT) other
    0.6 0.4

 

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