Irf; Protection Communication Options - ABB RELION 615 Series Applications Manual

Section 5
Protection relay's physical connections
5.2.3
5.3
104
Terminal
X110:17
X110:18
X110:19
X110:20
X110:21
X110:22
X110:23
X110:24

IRF

The IRF contact functions as an output contact for the self-supervision system of the
protection relay. Under normal operating conditions, the protection relay is energized and
the contact is closed (X100:3-5). When a fault is detected by the self-supervision system
or the auxiliary voltage is disconnected, the contact X100:3-5 drops off and the contact
X100:3-4 closes.
Table 35: IRF contact
Terminal
X100:3
X100:4
X100:5

Protection communication options

Two different protection communication options are available for the protection relay,
that is, a fiber optic link and a galvanic pilot wire link.
Multi-mode or single-mode glass fiber can be used in a fiber optic link. Select the required
glass fiber mode when ordering the protection relay. Link lengths up to 2 km with multi-
mode fiber and link lengths up to 20 km with single-mode fiber can be achieved. The fiber
optic cable used for protection communication is connected to the X16/LD connector in
the protection relay. See the technical manual for more information.
If a galvanic pilot wire is used as a protection communication link, the pilot wire modem
RPW600 is required. Select the pilot wire option when ordering the protection relay. The
protection communication link always requires two modems in a protection scheme, thus
delivered in pairs of master (RPW600M) and follower (RPW600F) units. The protection
relay is connected to the pilot wire modem using a single-mode fiber optic cable. Thus a
Description
SO2, common
SO2, NO
SO2, NC
SO3, common
SO3, NO
SO3, NC
SO4, common
SO4, NO
Description
IRF, common
Closed; IRF, or V disconnected
aux
Closed; no IRF, and V connected
aux
1MAC807603-MB A
RED615 ANSI
Application Manual