Siemens 3AD Series Installation And Operating Instructions Manual page 20

Description
Siemens Vacuum Recloser 3AD
3.2.1 Pole
The poles are made from cycloaliphatic epoxy resin, specially designed for outdoor
application, in which the vacuum interrupters embedded. Each pole contains a
current transformer and an optional voltage sensor.
~---29
28
Fig . 19 Pole for up to 27 kV (shown with
mounted 2-hole NEMA Pad)
28 Integrated voltage sensor (optional)
29 Integrated current transformer
Fig. 20 Pole for 38 kV
26 Upper terminal 3/4" - 10 UNC
27 Lower termina l 3/4" - 10 UNC
For the 3-phase-system the phase sequence is marked on the operating
mechanism housing by identification indents. (A
=
1 dent, B
=
2 dents and C
=
3
dents) This sequence is in line with the currents lA, Is and Ie of the controller.
B
~
A
~
14
Fig. 21 Marks on th e operating mechanism
housing
14 Identification indents
A 1 dent
B 2 dents
C 3 dents
20 9229 0040 176 OF
2017-12-18