33KV SF6 Gas Load Break Switch
Application of 33kv auto recloser
The 33kvpole mounted switchis made of a proven rugged, corrosion-resistant material (304L stainless steel plate for warships), ensuring a long service life (30 years) and a range of operations, with the characteristics ideal for on-column equipment.
Technical Parameters of load break switch 33kv
Products Type |
FWX-36 |
Basic Ratings |
|
Maximum System Voltage |
36kV |
Rated Continuous Current |
630A |
Rated Frequency |
50/60Hz |
Short Time Withstand Current |
16kA/1sec |
Making and Breaking Capacity |
|
Mainly Active Load Current |
630A |
Number of Load-break Operations |
400times |
Short-circuit Making Current (peak) |
40kA |
Number of Making Operations |
5 times |
Cable Charging Current |
25A |
Line Charging Current |
|
Closed Loop Circuit Current |
630A |
Transformer Magnetizing Current |
22A |
Power Frequency Withstand Current Test |
|
Wet Condition-10sec Ph- Ph-Eth, Across Interrupters |
70kV |
DryCondition-1min,Ph- Ph, Phase to Earth |
95kV |
Dry Condition - 1 min Across Interrupter |
110kV |
Impulse Withstand Current Test( 1.2 x 50 µs ) |
|
Phase to Phase, Phase to Earth |
195kV |
Across Interrupter |
215kV |
Other Ratings & Specifications |
|
Internal Arc Test |
20kA / 0.1 sec |
Arc Extinction Medium |
SF6 Gas |
Insulation Medium |
SF6 Gas |
Creepage Distance (Porcelain) |
1055mm |
Creepage Distance (Silicon) |
1550mm |
Dry arcing distance |
≥ |
IP Level |
65 |
Operation Performance |
|
Closing/Opening Time |
1sec |
Mechanical Operations (Guaranteed) |
10000times |
Operating Temperature (*Manual Type) |
-25~+70℃ |
Gas Pressure |
|
Nominal Pressure (MPa, at 20°C) |
|
Bursting Pressure (MPa) |
|
Minimum Gas Pressure (MPa) |
|
Leakage Rate (cc/ sec) |
≤0.5% |
Voltage sensors |
|
CT ABC 10P10 5VA |
400:05:00 |
Incoming side and outgoing side of the voltage sensor |
6 Voltage sensor(built-in) |
Phase voltage:(24(36)kV/√3)/(3.25V/√3) |
|
Special attention should be paid to the voltage sensor, which must be directly fed by the 33KVload break interrupter switch. |
|
No additional adjustment circuit can be added to the controller. The voltage signal of the 33kv load break switch into the test line needs to be tested separately. |
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