Secheron UR46-81S, Инструкция по эксплуатации

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Document number: SG104148TEN Revision: B01 Issue date: 20.8.2012
Copyright© 2012 Sécheron SA - This document is not contractual and contains information corresponding to the level of technology at the date of release.
File: d-UR46-8S_maint_en.fm
D-37
UR46-81/82S Maintenance
D.7 Replacement of the main contacts and the pole
a) Remove the arc chute (see § D.5.1 "Arc chute removal" ).
b) Remove the spark arresters (1 below).
D.7.1 Removal of the fixed contact, the pole and the metal strips
a) If the blowing device (36,37,38,39,40,41) is present, remove the screws (36) and both
magnetic cheeks (37), then disconnect the cable (38) and remove the electrode (39) with its
support (40).
b) Remove the flanges (2), the thin M8 nuts (3) and the spring washers (4).
Fixed contact
c) Lift up the end (6) of the fixed contact (5) to free it from the threaded rod (7).
d) Simultaneously loosen both nuts (27) to release the fixed contact (5) and remove it (31) from
above.
Pole
e) Remove the screw (8).
Note! For the UR46-81 version only and if the blowing device is present, loosen the screws (42) and
remove the coil (41) to be able to remove this screw (8).
f) Entirely remove both straight connections (9).
g) Loosen the flange (10).
h) Push the pole (12) with blow-out core (13) first inward then upward.
i) Separate the pole (12) from the blow-out core (13) by sliding them apart.
Metal strips
j) Remove both metal strips (30).
04627-S
3,4
2
2
1
5
24
12
30 33
9
11 37
41
36
13 32
10
2 3
4
27
6
7
8
2
3
4
31
5 28 31 11 12 30
8
3,4
42
40
39
38