26
Work to be performed
Recommended interval
Visual inspections:
1. Terminals clean and undamaged
2. No visible corrosion or damage to metal parts and cables
3. No loose parts (for example, bolts or connections)
4. Ground (earth) connections secure and undamaged
5. Labeling clearly legible
6. Triple-single type SDR controller undamaged and correctly secured.
12 months (adjust interval
according to experience)
Function tests:
1. Control and protection relay indicates fault-free operation of the
auxiliary power supply, batteries and capacitors (monitoring LEDs)
2. Fault-free operation of communication modules
3. Perform battery test or check result of last battery tests at the control
and protection relay.
12 months (as part of visual
inspection)
Protection tests:
1. Protection test using secondary injection equipment, in conjunction
with recloser function test (see the Installation and commissioning
section of the control and protection relay instruction manual)
2. Function test of lockout handles.
Four years (adjust interval
according to experience)
Reset counter "Switching operations since last visit" (refer to control and
protection relay instructions)
Following every maintenance
session
Table 3: Maintenance plan
Accessory/spare part
Order number
Surge arresters (3EK7)
On request
Auxiliary power supply (PS1)
On request
Switch unit driver (PCB2)
On request
Capacitor board (PCB3)
On request
External current transformer
On request
External voltage transformer
On request
Transformer for auxiliary voltage supply
On request
Current/voltage transformer pole-mount frame
On request
Control cable
On request
Voltage sensor cable
On request
Cover for position indicator
On request
Animal guards
On request
Set of terminal connectors (six pieces)
On request
Set of batteries (four batteries, 12 Ah, 48 V)
On request
Heaters
On request
Type SDR 15.5 kV to 27 kV triple-single distribution recloser instruction
manual
E50001-F710-A412-X-XXXX
Table 4: Spare parts
Summary of Contents for SDR 15.5
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