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36
Test switch modules for RED 521
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One test switch is required for each analog input module (AIM). As the RED 521 ter-
minal case is 19” the test switch will always be delivered separately. The test switches
for RED 521 have always an external earth (star point) connection of three-phase CT
groups,
see figure 22
. There are two alternatives for the choice of test switch modules.
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1MRK 000 371-EA
For the first AIM module. Test switch module RTXP 24 in a RHGS case.
Provides a DC-switch as an available option.
1MRK 000 371-EB
For the second AIM module. Test switch module RTXP 24 in a RHGS
case. DC-switch is not a possible option.
3
29
30
A
1
2
B
4
5
6
7
8
9
10
11
12
B
A
13
19
14
15
16
17
18
22
20
21
23
24
RK 926 315-AP
Содержание 500 Series
Страница 6: ... RQWHQWV ...
Страница 32: ...26 Mounting methods and mounting details KDSWHU 7HUPLQDO GLPHQVLRQV DQG PRXQWLQJ DOWHUQDWLYHV ...
Страница 46: ...40 Test switch modules for RED 521 KDSWHU 7HUPLQDOV ZLWK D WHVW VZLWFK PRGXOH ...
Страница 72: ...66 Making the electrical connections KDSWHU OHFWULFDO FRQQHFWLRQV ...