P341/EN O/B11 Operation Guide
CHAPTER 2 Installation
Page 8/10 MiCOM P341
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 3 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 3: IP52 sealing rings
Further details on mounting MiDOS relays can be found in publication R7012,
“MiDOS Parts Catalogue and Assembly Instructions”.
6. RELAY WIRING
This section serves as a guide to selecting the appropriate cable and connector type
for each terminal on the MiCOM relay.
6.1 Medium and heavy duty terminal block connections
Loose relays are supplied with sufficient M4 screws for making connections to the rear
mounted terminal blocks using ring terminals, with a recommended maximum of two
ring terminals per relay terminal.
If required, ALSTOM T&D Protection & Control Ltd can supply M4 90° crimp ring
terminals in three different sizes depending on wire size (see Table 4). Each type is
available in bags of 100.
Part Number Wire Size Insulation Colour
ZB9124 901
0.25 – 1.65mm
2
(22 – 16AWG)
Red
ZB9124 900
1.04 – 2.63mm
2
(16 – 14AWG)
Blue
ZB9124 904
2.53 – 6.64mm
2
(12 – 10AWG)
Uninsulated*
Table 4: M4 90° crimp ring terminals
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