As an insulating gas, SF6 gas is non-toxic, non-flammable and has good insulation characteristics. Its insulation strength is much higher than that of traditional insulating gas, and it has good arc extinguishing property. Therefore, SF6 gas is widely used in SF6 electrical appliances. Because SF6 gas is expensive, and under the action of arc, spark and corona discharge, it will decompose and produce toxic components. Therefore, SF6 gas needs to be recovered in the application of SF6 electrical equipment. This device is a special equipment for recovering and filling SF6 gas when manufacturing and repairing SF6 electrical equipment.

1, recycling

 

Recovery initial pressure < 0.8MPa

 

Recovery end pressure < 1KPa

 

Recovery time: For 1 m3 SF6 gas volume with initial pressure of 0.8 MPa, recovery time is less than 3 hours until final pressure of 1 KPa.

 

2. Inflation

 

The volume of 1 m3 SF6 gas with initial pressure of 133 Pa is filled to 0.8 MPa, and the charging time is less than 0.5 hours.

 

3. Vacuum extraction

 

Limit vacuum of the device is less than or equal to 10 Pa

 

It takes less than 0.8 hours to vacuum 1 m3 SF6 gas with initial pressure of 0.1 MPa to 133 Pa.

 

4. Storage

 

Storage container volume 0.2m3

 

Nominal liquid storage capacity 200 kg

 

Maximum storage pressure 5 MPa

 

5, purification

 

For SF6 gas with water content less than 1000 PPM (volume ratio), the water content is less than 50 PPM (weight ratio) and the oil content is less than 5 PPM (weight ratio) after one recovery and purification.

 

6. Annual leakage rate less than 1% nominal storage

 

7. Noise < 75dB(A) Sound Pressure Level

 

8. Working Environment Temperature - 10 Degree - 40 Temperature

 

9. Power < 7KW

 

10. Power supply: three-phase AC 50HZ 380V + 10%

 

11. Weight of about 600 kg

 

12. Outward Size (Length *Width *Height): 1450 *810 *1200

Safety precautions before experiment

 

1. In order to protect the equipment and personal safety, please read the instructions carefully before the test and operate strictly according to the instructions.

 

2. Participants must prepare well for the experiment, including understanding the subjects, test equipment, test standards, test methods, measurement methods and so on.

 

3. The staff who use this instrument must be professionals who have "high-pressure test certificate".

 

4. If the "LOW BAT" is displayed on the high voltage shielded microampere, please replace the 9V battery to avoid measurement error.

 

5. For temporary field tests, fences marked "high-pressure danger, do not approach" should be set up. The necessary interlocking device should also be installed in the fixed high-pressure test area.

 

6. During the test, the operator should reserve enough safe operating distance (less than 20 KV per meter in air).

 

7. Before the test, please check whether the grounding wires of the main machine, the pressure multiplier and the test products are well connected. The grounding wires of the test circuit should be grounded at one point according to the requirements of this instruction.

 

8. When conducting capacitive load test, the current limiting resistor must be connected.

 

9. Discharge of large capacitance specimens should be discharged by 100_/V discharge resistance rod. When discharging, the discharging rod should not contact the specimens immediately. The discharging rod should be gradually approached to the specimens until a certain distance from the air gap to start free discharging with a hissing sound. When there is no sound, the discharge rod can be used to discharge, and the ground wire can be connected directly to discharge.

 

10. After the test, the grounding wire must be hung to the high-voltage output terminal to remove the high-voltage lead.

 

11. When there is a stain on the surface of the insulating cylinder of the pressure multiplier, please wipe it with a dry cloth. When transporting or not using the pressure multiplier, please put it in the box.

 

12. The working and storage places of the device shall be free from other explosive and corrosive media that seriously affect the insulation of gases, steam and chemical dust in Egypt.

 

Do not place the instrument on an unstable platform or desktop to prevent it from falling and being damaged.

 

14. If the instrument is not used for a long time, please keep it in a dry and ventilated place and electrify it once a month.