Eaton Xiria, User Manual

Page: 33 / 56

Xiria
994.570 G01 06 33
6. INSPECTION AND MAINTENANCE
6.1 Introduction
The XIRIA unit is theoretically a maintenance-free system.
No specific components need to be maintained. All primary,
live components are maintenance-free and are housed in a
sealed gas-tight enclosure. All other components have also
been designed to be maintenance free.
The following components can be inspected:

correct fixing of cable and earth connections;

enclosure for damage and contamination;

protection relay;

switching functions;

voltage detection;

the overcurrent indicator.
6.2 Inspections
6.2.1 Inspecting cable connections
Inspect the cable connection in accordance with the
following procedure:
1. Open the cable connection compartment in
accordance with the procedure described in
section 4.2.3.
2. Clean the compartment with a dry cloth.
3. Check the cable plug connection according to the plug
supplier's instructions. Ensure that the cable does not
impart any mechanical strain on the plug. The cable
forces are to be absorbed by the cable support, see
'Strain relief' in section 3.3.2.
4. Check the cable support. The cables must be secure
in the cable clamp blocks. Check that the bolts are still
tightened to a torque of 20 Nm, see Cable assembly
instructions in section 3.3.2.
5. Check the earth connections:

between cables and earth strip;

between earth strip and enclosure;

between earth strip and system earth;
6. Close the cable connection compartment.
6.2.2 Inspecting switching functions
Inspect the switching functions in accordance with the
following procedure:
1. Check with the person responsible for the unit whether
the relevant unit is disconnected and ready for
inspection.
2. Verify, in consultation with the person responsible for
operations, that the relevant panel is disconnected so
that the inspection can be carried out safely. Satisfy
yourself at the same time that the cable connected is
and will remain dead.
3. Place the switch in the OFF position and the change-
over switch in the earthed position, see section 4.2.
4. Complete all switching operations described in
section 4.5 Short-form instructions. Always carefully
check that the operation produces the desired result.
Check the position indicators on the control panel and
the actual position of the change-over switch and the
vacuum interrupter through the viewing windows. See
section 4.2.2.
5. If an operation has not produced the required result
according to the position indicators or when the actual
position of the change-over switch is checked, shut
down the unit and inform Eaton-ESS.