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By certification 
Metal Clad Switchgears are manufactured in conformity with IEC 62271-200 standards and rated up to 40,5 kV, 4000 A, 40 kA/3s electrical values with LSC-2B service Continuity, Partition class PM, AFLR Internal Arc Classification, IP 4X Protection class and with 4/5 independable accessible compartments.
Metal Clad Switchgears is used for power generation, transmission, distribution, electrical energy conversion and consumption in the power system to play the role of on-off, control or protection.
1.Rtaed Voltage: 33kv
2.Rated Current:1250A/630A
3.Temperature rise current:1.1Ir
4.Rated power frequency 1min withstand voltage (phase to ground):95kV
5.Peak value of rated lightning impulse withstand voltage (1.2 ÷ 50s) (phase to ground):125kV
6.Rated short-circuit breaking current:31.5kV
7.Rated short-circuit making current:80kA
8.Rated short-time withstand current and duration:31.5/4 25/4 kA/s
9.Rated peak withstand current:80kA
10.Short time power frequency withstand voltage of auxiliary and control circuit:2kV
1.33KV switchgear is simple in structure,convenient in maintenance and convenient in overall layout and operation;
2.The supporting interlocking action is stable and reliable;
3.Wide use;
4.Reliable performance;
Working Conditions:
a. The Ambient temperature upper limit and lower limit are respectively +40°C and -40°C; (allowing storage and transportation at -30°C);
b. Altitude is not more than 1000m;
c. Relative humidity: daily average value should not be more than 95%, while monthly average value should not be more than 90% (+25°C);
d. Seismic intensity should be not more than 8°;
e. Places without fire, explosion risk, serious pollution, chemical corrosion and violent vibration.
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