Ied Case And Ied Plug-In Unit - ABB Relion 611 series REB611 Product Manual

ABB
Busbar and Multipurpose Differential Protection and Control
REB611
Product version: 1.0
GUID-0ED32BE0-C610-4171-81A9-321735932451 V1 EN
Figure 8. Flush mounting

19. IED case and IED plug-in unit

For safety reasons, the IED casings of the current
measuring IEDs are equipped with automatic
operating contacts that short-circuit the current
transformer secondary circuits when the IED unit
is withdrawn from its case. The IED casing is also
equipped with a mechanical coding system that
prevents current measuring IED units from being
inserted into voltage measuring IED casings and
vice versa, that is, the IED casings are assigned
to a certain type of IED plug-in unit.
GUID-2B67CC71-7A0E-4EC8-86AA-9E94EE3C0BAF V1 EN
Figure 9. Semi-flush mounting
1MRS757467 B
GUID-78E3ECC3-F2C7-4EFE-BC94-CAF89B5CA6D0 V1 EN
Figure 10. Semi-flush with a 25º
tilt
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