ABB Relion REC615 - Page 97

3
4
5
X100
IRF
Figure 28: Internal fault signal output IRF
3.12.2.2 Signal outputs SO1 and SO2 in power supply module
Signal outputs (normally open/form A or change-over/form C) SO1 (dual parallel
form C) and SO2 (single contact/form A) are part of the power supply module of the
protection relay.
10
11
12
X100
SO1
14
13
X100
SO2
Figure 29: Signal outputs SO1 and SO2 in power supply module
3.12.2.3 Signal outputs SO1, SO2, SO3 and SO4 in BIO0005
The optional card BIO0005 provides the signal outputs SO1, SO2 SO3 and SO4.
Signal outputs SO1 and SO2 are dual, parallel form C contacts; SO3 is a single form C
contact, and SO4 is a single form A contact.
1MRS758755 C
Basic functions
REC615 & RER615
Technical Manual
97