Areva MiCOM P921, Technical Manual

Page: 317 / 376

Technical Guide P92x/EN IN/E11
Installation
MiCOM P921-P922-P923 Page 7/10
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5.2 Panel Mounting
The relays can be flush mounted into panels using self-tapping screws passing
through the front mounting flanges. Alternatively tapped holes can be used if the
panel has a minimum thickness of 2.5 mm.
For applications where relays need to be semi-projection or projection mounted, a
range of collars are available. Further details can be obtained from the Contracts
Department of A REVA .
Where several relays are to mounted in a single cut-out in the panel, it is advised that
they are mechanically grouped together horizontally and/or vertically to form rigid
assemblies prior to mounting in the panel.
NOTE: It is not advised that MiCOM relays are fastened using pop rivets
as this will not allow the relay to be easily removed from the
panel in the future if repair is necessary.
If it is required to mount a relay assembly on a panel complying to BS EN60529
IP52, it will be necessary to fit a metallic sealing strip between adjoining relays (Part
no GN2044 001) and a sealing ring selected from Table 2 around the complete
assembly.
Width Single Tier Double Tier
10TE GJ9018 002 GJ9018 018
15TE GJ9018 003 GJ9018 019
20TE GJ9018 004 GJ9018 020
25TE GJ9018 005 GJ9018 021
30TE GJ9018 006 GJ9018 022
35TE GJ9018 007 GJ9018 023
40TE GJ9018 008 GJ9018 024
45TE GJ9018 009 GJ9018 025
50TE GJ9018 010 GJ9018 026
55TE GJ9018 011 GJ9018 027
60TE GJ9018 012 GJ9018 028
65TE GJ9018 013 GJ9018 029
70TE GJ9018 014 GJ9018 030
75TE GJ9018 015 GJ9018 031
80TE GJ9018 016 GJ9018 032
TABLE 2 : IP52 SEALING RINGS
Further details on mounting MiDOS relays can be found in publication R7012,
“MiDOS Parts Catalogue and Assembly Instructions”.