19
Installation of the three-phase type SDR
controller on the pole
To attach the three-phase type SDR controller
the following components are required:
Two 0.75 inch mounting bolts with nuts
and washers (length equal to pole diameter
plus four inches; not included in scope of
delivery)
Three-phase type SDR controller
Batteries.
1. Insert upper mounting bolt through the
pole (hole spacing 40.5 inches
(1,029 mm)).
2. Lift three-phase type SDR controller with
two cables using the lifting eyes and
fasten to the upper mounting bolt.
Tighten nut by hand.
3. Align three-phase type SDR controller and
insert lower mounting bolt through the
pole and fasten.
4. Tighten bolted connections and check
stability.
5. Install the four batteries with terminals
facing towards each other (per Figure 20)
and secure with the hook and loop
fastener strap.
6. Place temperature sensor on the battery
under a hook and loop fastener strap.
7. First connect the positive terminal, then
connect the adjacent terminals of two
batteries using the short connecting
cables and finally connect the negative
terminal to the three-phase type SDR
controller connection. Make sure the
connections have the correct polarity
(compare with the labeling on the
cables).
Note:
Avoid incorrect polarity of batteries.
Connecting the rechargeable batteries with
the wrong polarity will result in damage to
the controller electronics (PCB2) and also
misoperation of the recloser.
Connection covers
The control and (optional) voltage sensor
cable connections are supplied with covers at
the recloser switch unit and controller. When
connecting the cables, the covers should be
stored in a clean and dry environment, such
as the controller enclosure, in case of later
use during disconnection of the cables.
Electrical installation
The following must be carried out in order to
establish the electrical connections:
Establish the ground (earth) connection,
Connect the recloser switch unit to the
three-phase type SDR controller,
Connect the auxiliary voltage, and
Establish the high-voltage connection.
Establishing the ground (earth) connection
Both the recloser switch unit and the three-
phase type SDR controller must be connected
to the pole ground (earth) or ground (earth)
in the substation. If surge arresters are
installed, these must also be securely
grounded (earthed).
For correct grounding (earthing), the
following must be observed:
The recloser (switch unit plus three-phase
type SDR controller) must be grounded
(earthed) in accordance with local
regulations and work practices.
The cable to be used must be suitable for
grounding (earthing). This particularly
applies for the cross section of the
grounding (earthing) cable and
connections.
The cables (control and optional voltage
sensor cable) must be installed as close
together as possible with the ground
(earth) conductor (see Figure 23:
Connection of cables and grounding
(earthing) of recloser on page 20). Ideally
they should be bundled together.
Figure 19: Lifting of control cubicle
1. Lifting eye
2. Pole-mounting bracket
Figure 20: Installation of batteries
1. Batteries (four)
2. Temperature sensor
Figure 21: Recloser switch unit
connections (rear view)
1. Control cable connector
2. Voltage sensor cable connector
(optional)
3. Ground (earth)
1
2
1
2
1
2
1
2
1
1
3
1
Summary of Contents for SDR 15.5 kV
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