110kV 126kV GIS SF6 Gas Insulated High Voltage Switchgear Metal Clad Switchgear
NINGBO TIANAN (GROUP) CO., LTD.
All requirements, which are nowadays usually specified for modern and advanced switchgear with respect to performance and reliability, are met by GIS
type (ZFW-126/T250040)for rated voltages of up to126 kV.
Δ Compact Structure
Three -phase-one enclosure design, compact structure with 0.8m clearance between bays and save muchspce.enclosure design
Δ Flexible Arrangement
Standardized and modularized design, flexible layout, suitable for all kinds of single-line diagram
including single busbar, double busbar, line transtormer, bridge type diagram, 1.5 circuit breaker diagram.
Δ New Arc Extinction Design and Excellent Breaking Ability.
Gas pressure resistance and moving parts mass have been dramatically reduced thanksto the circuit breaker's unique thermal expansion room + auxiliary puffer design.Breakingcapacity of arc extinguisher has been greatly reinforced because energy of arc has beentultaken advantage of due to improvement of breaking speed,
jet orifice, pressure cylinder and other components of arc extinguisher.
Δ Environmental Friendly
Based on environmental friendly concept and with ISO14001 system,good looking outine. no radiation, and no pollution, this product is suitable for all kinds of conditions.
Δ Three-work-position combined switch of disonnecting(DS) and earthing(ES)
With busbar(line) three work position disconnecting/earthing switch ,it can realize three positions: connect, disconnect and earthing.Quantity of parts is reduced,reliability of products is enhanced, and interlock of DS and ES is assured because of combination of DS,ES and busbar.
Δ Basin type insulator
Stress on the basin type insulator has been improved, electromagnetic radiation leakage aluminum has beem prevented and external enclosure induce voltage
has been resisted thanks to aliminum outer ring structure.
Δ High reliability operation mechanism
Gas free and oil free of circuit breaker has been realized because of application of easy to operate and easy to maintain electric spring operation mechanism.
Operation mechanism is of very high reliability because it is anti wear and is free from influence of temperature.
Δ High insulation reliability
High insulation reliability has been assured because conductors and insulators are all enclosed in the earthing metal enclosure without being influenced by the outer
Δ Excellent anti- earthquake ability
Thanks to its low weight center; light weight and compact structure. this product has anexcellent anti- earthquake ability.
Δ Standard and easy to install
Designed and manufactured strictly in accordance with IEC and GB standards, this product's structure and reliability is excellenty standardized and modularized.
After assembly and test, it will be packed and shipped directly as a whole product and this will resulted in a short installation period.
Δ Low noise and easy to maintain
Since no compact air is needed tor operation mechanism of circuit breaker ,disconnecting switch and earthing switch,the operation noise is exemely low.Since SF6 performs well and damage of arc contact caused by opening and breaking arc is very low.this product also is very easy to maintain.
||Rated voltage kV
1 min power frequency withstand voltage
(virtual value) kV
|Phase-to-phase, to earth
||Lightning impulse withstand voltage (virtual value) kV
||Phase-to-phase, to earth
||Rated frequency Hz
||Rated current A
||Rated short-time withstand current kA
||Rated peak withstand current kA
||Rated duration of short-circuit s
||Rated pressure of SF6(20ºCgage pressure)MPa
||Annual leakage rate of SF6
||Rated short circuit breaking current (virtual value) kA
|Rated short circuit making current (peak value) kA
|Rated short circuit breaking current direct component
|Rated operating cycle
|Without inspection operation time(no-load) (time)
|Full capacity breaking times (time)
||Making busbar charging capacitance current capacity A
|Making magnetizing current capacity A
|Making busbar transfer current/voltage A/V
|Mechanical life (time)
||Fast earth switch
||Rated short circuit making current (peak value) kA
|Mechanical life (time)