Description and operation
SF
6
gas monitoring
M20--002EN03
9/10
02--2011
© ALSTOM 2010. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is
strictly prohibited.
GRID
Values of the SF
6
gas effective pressures in accordance with the temperature
Rated pressure
0.75 MPa
down to --25
°
C
Values of theSF
6
gaseffective pressures (
MPa
) corrected in accordance with
temperature for an atmospheric pressure of 101.3 kPa :
t
_
C
p
re
p
ae
p
me
t
_
C
p
re
p
ae
p
me
--25
0,584
0,500
0,477
18
0,743
0,634
0,604
--24
0,588
0,503
0,480
19
0,746
0,637
0,607
--23
0,591
0,506
0,483
20
0,75
0,64
0,61
--22
0,595
0,509
0,486
21
0,754
0,643
0,613
--21
0,599
0,512
0,489
22
0,757
0,646
0,616
--20
0,602
0,516
0,492
23
0,761
0,649
0,619
--19
0,606
0,519
0,495
24
0,765
0,652
0,622
--18
0,610
0,522
0,498
25
0,768
0,656
0,625
--17
0,613
0,525
0,501
26
0,772
0,659
0,628
--16
0,617
0,528
0,504
27
0,776
0,662
0,631
--15
0,621
0,531
0,507
28
0,780
0,665
0,634
--14
0,625
0,534
0,509
29
0,783
0,668
0,637
--13
0,628
0,537
0,512
30
0,787
0,671
0,640
--12
0,632
0,540
0,515
31
0,791
0,674
0,643
--11
0,636
0,544
0,518
32
0,794
0,677
0,645
--10
0,639
0,547
0,521
33
0,798
0,680
0,648
--9
0,643
0,550
0,524
34
0,802
0,684
0,651
--8
0,647
0,553
0,527
35
0,805
0,687
0,654
--7
0,650
0,556
0,530
36
0,809
0,690
0,657
--6
0,654
0,559
0,533
37
0,813
0,693
0,660
--5
0,658
0,562
0,536
38
0,816
0,696
0,663
--4
0,661
0,565
0,539
39
0,820
0,699
0,666
--3
0,665
0,568
0,542
40
0,824
0,702
0,669
--2
0,669
0,572
0,545
41
0,827
0,705
0,672
--1
0,673
0,575
0,548
42
0,831
0,708
0,675
0
0,676
0,578
0,551
43
0,835
0,712
0,678
1
0,680
0,581
0,554
44
0,839
0,715
0,681
2
0,684
0,584
0,557
45
0,842
0,718
0,684
3
0,687
0,587
0,560
46
0,846
0,721
0,687
4
0,691
0,590
0,563
47
0,850
0,724
0,690
5
0,695
0,593
0,566
48
0,853
0,727
0,693
6
0,698
0,596
0,569
49
0,857
0,730
0,696
7
0,702
0,600
0,572
50
0,861
0,733
0,699
8
0,706
0,603
0,575
51
0,864
0,736
0,702
9
0,709
0,606
0,577
52
0,868
0,740
0,705
10
0,713
0,609
0,580
53
0,872
0,743
0,708
11
0,717
0,612
0,583
54
0,875
0,746
0,711
12
0,720
0,615
0,586
55
0,879
0,749
0,713
13
0,724
0,618
0,589
56
0,883
0,752
0,716
14
0,728
0,621
0,592
57
0,887
0,755
0,719
15
0,732
0,624
0,595
58
0,890
0,758
0,722
16
0,735
0,628
0,598
59
0,894
0,761
0,725
17
0,739
0,631
0,601
60
0,898
0,764
0,728
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