Areva MCAG 19, Руководство по обслуживанию

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Publication R6001 is a leaflet on the modular integrated drawout system.
Publication R6014 is a list recommended suppliers for the pre-insulated connectors.
Section 2. COMMISSIONING
2.1 General
Before leaving the factory all relays are accurately adjusted, tested and carefully
packed. Hence there should be no need for any re-adjustment on commissioning.
Moving parts are held in position during transit by rubber bands and packing.
These should be removed carefully.
2.2 Electrostatic discharges
The relay uses components which are sensitive to electrostatic discharges.
When handling the module, care should be taken to avoid contact with components
and electrical connections. When removed form the case for storage, the module
should be placed in an electrically conducting anti-static bag.
2.3 Wiring
Check that ratings of relay agree with the supplies to which it is to be connected.
Check all wiring connections to the relay, including the case earthing connection
above the terminal block. It is especially important that dc supplies and magnetic
blowout contacts are wired with the correct polarity. The relay diagram number
appears inside the case.
2.4 Commissioning preliminaries
To gain access to the relay first loosen the captive cover screw and carefully remove
the cover from the case.
The module can then be removed from the case by grasping the handles at the top
and bottom of the front plate and pulling forwards.
Care must be taken to ensure that mechanical settings of the element are not
disturbed.
Carefully remove the rubber band securing the flag mechanism
Check that the bottom end of the contact operating card has not been dislodged from
the slot in the armature extension and that the ends of the push rods are located in
the holes in the contact springs.
Carefully actuate the armature of each unit in turn with small screwdriver/probe.
Note immediately after the point where any make contacts just close there is a
further small movement of the armature. This ensures that contact follow through
and wiping action is present. Repeat similarly with break contacts on armature
release.
On units fitted with hand reset flag indicators, check that the flag is free to fall
before, or just as, any make contacts close.
Replace the module in the case and refit the cover. Make sure that the reset
mechanism in the cover is correctly located with respect to the relay element,
and that the flag(or mechanism) can be reset.