Siemens SDR 15.5 Instruction Manual page 11

Triple-single type SDR controller
The triple-single type SDR controller is
equipped with integrated pole-mount
brackets. It can be installed on the recloser
pole or substation frame at an operating
height as preferred by the user.
The triple-single type SDR controller is
equipped with a lockable door with a three-
point latch and provision for a padlock.
Behind the door is a swing panel, which
contains the control and protection relay,
miniature circuit breakers and a ground fault
circuit interrupter (GFCI) safety outlet for a
laptop. Behind the swing panel, there are
printed circuit boards (PCB), rechargeable
batteries and wiring connections.
The triple-single type SDR controller is
equipped with a thermostat-controlled anti-
condensation heater (space heater). The
thermostat also controls the space heater in
the switch unit. The heating is switched off
above approximately 40° C.
PCB2: Switch unit driver (SUD): controls the
magnetic actuator with monitoring of
end positions, monitoring for broken
cable and with discharge switch for the
capacitors (PCB2 not included with the
Schweitzer Engineering Laboratories,
Inc. type SEL-651R recloser control relay
option).
PCB3: Capacitors for magnetic actuator (PCB3
not included with the Schweitzer
Engineering Laboratories, Inc. type SEL-
651R recloser control relay option).
Note: The triple-single type SDR controller
requires one PCB2 switch unit driver and one
capacitor circuit board for operation with
each of the three single-phase reclosers that
comprise the triple-single type SDR recloser.
4
1
7 8 7 8 7 8
6
5
Figure 10: Triple-single type SDR controller with door open
7
1
1
2
2
3 5
4
6
5
Figure 11: Triple-single type SDR controller with swing panel open
3
Figure 12: Space heater
1. Door
3
2. Triple-single type SDR
controller
3. Pole-mount bracket
4. Type 7SR224 control and
protection relay (illustrated
partially withdrawn)
2
5. Ground fault circuit
9
interrupter (GFCI) duplex
outlet
6. Miniature circuit breakers CB1,
CB2 and CB3
7. Close pushbutton
8. Open pushbutton
9. Swing panel
1. PCB3
2. PCB2
3. Miniature circuit breakers CB1, CB2 and CB3
4. Swing panel
5. Terminal blocks
6. Heater thermostat
7. PS1
2
1
2
1. Space heater
2. Batteries
(four
12 Vdc,
12 AH)
3. Internal
copper
ground bar
11