EVR AUTOMATIC RECLOSER
http://www.entecene.co.kr
38
EN
HANCED
TEC
HNOLOGY
7.4. SF6 GAS REFILLING
7.4.1. General
The recloser is filled with SF6 gas 0.5bar gauge pressure at 20
℃
.
When the pressure of SF6 gas in the recloser tank is below 0.2bar gauge at 20
℃
, the instruction of
refilling SF6 gas is as follows.
7.4.2. Refilling procedure
1)
Connect SF6 gas tank to gas-filling valve on the side of recloser tank as shown in Figure 7-1
below. The gas-filling valve matches with DILO pressure coupling VK/F-02/8.
2)
Measure the gas pressure in recloser tank.
3)
When the gas pressure is above 0.1bar gauge, refilling SF6 gas work should be proceeded by
attaching the gas filling equipment and filling the SF6 gas to 0.5bar gauge pressure.
4)
When the gas pressure is below 0.1bar gauge, a vacuum must be drawn from the recloser tank
before filling SF6 gas. Draw the vacuum of 10mbar and hold this vacuum condition for 15 min
and refill the recloser tank with SF6 gas to 0.5bar gauge pressure at 20‘C.
Figure 7-1. SF6 gas refilling configuration
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