PGS Series Outdoor High Voltage SF6 Load Break Switch
PGS Series Outdoor High Voltage SF6 Load Break Switch
Application
PGS-630A pole mounted load break switch is used for breaking rated voltage 12/24/40.5kV, rated current 630A, 50/60Hz power distribution system, closing load current and over load current of power system, it could separate automatically track sections of power distribution which faults occur. The switch is matched with electronic controller which is with the latest technology. The switch has manual, motor, remote operation modes. The electronic controller would be installed inside the stainless steel box, so it could be used in various climate conditions. Besides that, the wire/wireless modem installed inside control box could achieve remote monitoring and controlling. It’s easy and convenient for installation the switch on pole, and that could reduce the execution cost.
Specifications
Environmental Conditions
Air temperature: －40℃~+50℃;
Relative humidity: 110%
Altitude ≤3000m.
Wind pressure ≤700pa (equivalent to wind speed 34m/ｓ).
Seismic intensity: 8 degree.
Installation site: No fire disaster, explosion danger, chemical corrosion and frequent strenuous vibration places).
Pollution grade: Ⅲ class, Ⅳclass.
Type descriptions
Parameter
Technical Parameter
| Products Type | PGS-12 | PGS-24 | PGS-40.5 |
| Basic Ratings | |||
| Maximum system voltage | 15KV | 25.8KV | 40.5KV |
| Rated continuous current | 630A | 630A | 630A |
| Rated frequency | 50/60Hz | 50/60Hz | 50/60Hz |
| Short time withstand current | 20KA/4s | 25KA/1s | 20KA/1s |
| Making and Breaking Capacity | |||
| Mainly active load current | 630A | 630A | 630A |
| Number of load-break operations | 400times | 400times | 400times |
| Short-circuit making current (peak) | 50KA | 50KA | 50KA |
| Number of making operations | 5 times | 5 times | 5 times |
| Cable charging current | 25A | 25A | 25A |
| Line charging current | 1.5A | 1.5A | 2A |
| Closed loop circuit current | 630A | 630A | 630A |
| Rated no-load transformer breaking current | 22A | 22A | 22A |
| Power Frequency Withstand Current Test | |||
| 10s(wet test),phase- phase-earth, across open contacts | 45KV | 50KV | 70KV |
| 1min(dry test), earth, phase to earth | 50KV | 60KV | 95KV |
| 1min(dry test), across open contacts | 50KV | 60KV | 110KV |
| Impulse Withstand Current Test( 1.2 x 50 µs ) | |||
| Phase-to-phase, phase-to-earth | 85KV | 150KV | 195KV |
| Across open contacts | 95KV | 150KV | 215KV |
| Other Ratings & Specifications | |||
| Internal arc test | 20kA /0.1 s | 20kA /0.1 s | 20kA /0.1 s |
| Arc extinction medium | SF 6 Gas | SF 6 Gas | SF 6 Gas |
| Insulation medium | SF 6 Gas | SF 6 Gas | SF 6 Gas |
| Creepage distance (porcelain) | 550mm | 840mm | 1055mm |
| Creepage distance (silicon) | 610mm | 900mm | 1250mm |
| IP level | 54 | 54 | 54 |
| Operation Performance | |||
| Closing/opening time | ＜1sec | ＜1sec | ＜1sec |
| Mechanical operations (guaranteed) | 10000times | 10000times | 10000times |
| Operating temperature (*manual type) | -25(-40)～70℃ | -25(-40)～70℃ | -25(-40)～70℃ |
| Gas Pressure | |||
| Rated working pressure (kg/cm2 G, at 20°C) | 0.7 | 1.0 | 1.0 |
| Explosion-protection equipment action pressure (kg/cm2 G) | 4～6 | 4～6 | 4～6 |
| Minimum working pressure (kg/cm2 G) | 0.05 | 0.0 | 0.0 |
| Gas leakage rate (cc/ s) | ≤1% | ≤1% | ≤1% |
Overall Dimensions
| Dimension(mm) | InstallationDimension(mm) | Packing size(mm) | Creep distance ofbushing(mm) | |||
| A | B | C | Length × Width | Length×Width×high | ||
| 10KV | 225 | 435 | 500 | 500×390 | 1100×900×700 | 556 |
| 24KV | 300 | 435 | 500 | 500×390 | 1300×1100×700 | 840 |
| 40.5KV | 350 | 435 | 500 | 700×390 | 1400×1200×700 | 1250 |
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Indoor high-voltage SF6 load break switch is widely used in the 11~36kV electric power distribution systems.
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