Siemens SDR 15.5 Instruction Manual page 7

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Figure 1: Single-phase recloser switch unit (front view)
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Figure 2: Single-phase recloser switch unit (rear view)
Triple-single recloser switch unit with
encapsulated vacuum interrupter
The type SDR triple-single vacuum recloser
consists of three single-phase switch units.
The three switch units are typically close
coupled in a common mounting frame (refer
to Figure 3: Typical triple-single close-coupled
pole mounting front view on page 8), but
may be separately mounted, in close
proximity, for applications such as cluster
mountings, cross-arm mountings or vertical
mountings on utility poles. Each triple-single
recloser switch unit is comprised of the poles,
the operating mechanism and the operating
mechanism housing. The operating
mechanism housing with the support feet
form the base of the recloser switch unit. The
switch units can be secured to the pole
mounting or substation frame.
1. Pole with integrated vacuum interrupter
2. Position indicator (underneath)
3. Operating mechanism housing
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4. Lower terminal (usually load side)
5. Upper terminal (usually line side)
6. Lockout handle
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1. Pole with integrated vacuum interrupter
2. Nameplate
3. Connector for control cable
4. Connector for voltage sensor cable (optional)
5. Lower terminal (usually load side)
6. Upper terminal (usually line side)
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7. Ground terminal connection
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