Siemens SDR 15.5 Instruction Manual page 8

1
15.5 kV and
27.0 kV
2
3
1. Upper terminal with SAE
3/4-10 UNC 2A threaded
connector (usually line
side)
2. Integrated current
transformer (CT) (lower
terminal)
3. Integrated voltage sensor
(optional - connected to
lower terminal)
4. Lower terminal with SAE
3/4-10 UNC 2A threaded
connector (usually load
side)
Terminal lugs optional
Figure 5: Pole with integrated
vacuum interrupter
8
4
4
1
2
4
4
6
Pole
The poles are molded using cycloaliphatic
epoxy resin specially designed for outdoor
use. The vacuum interrupters are encap-
sulated in the pole units. In addition, each
pole contains a current transformer and may
also contain an optional voltage sensor, both
monitoring the lower terminal.
The phase designation and sequence of the
poles is determined by the connection of the
control cable and optional voltage sensing
cables at the rear of each of the three recloser
switch unit poles. These cables transition
from a single connection at the type SDR
triple-single controller to three separate
connections at the switch unit poles.
2
3
1
4
5
Figure 3: Typical triple-single close-coupled pole mounting front view
3
5
Figure 4: Typical triple-single close-coupled pole mounting rear view
1. Vertical brace assembly
2. Upper lifting eye
3. Upper terminal surge arrester bracket
(optional)
4. Lower terminal surge arrester bracket
(optional)
5. Leveling feet
1. Vertical brace assembly
2. Pole channel
3. Recloser ground terminals
4. Frame ground terminal
5. Leveling feet
6. Pole-mounting eyes
The upper cable ends are marked to identify
the phase designation (A, B or C). These
cables may be aligned to match the system
phase sequence during installation (refer to
page 20). This sequence identifies the
currents IA, IB and IC of the controller. The
phase sequence also may be changed to
match the system phase sequence using the
control and protection relay software.