
1MRS750886-MUM
13
REU 513
User’s Guide
ABB Substation Automation
Products and Systems
2. Technical
description
2.1.
Functional description
2.1.1.
Product functions
2.1.1.1.
Schema of product functions
Fig. 2.1.1.1.-1 Product functions
2.1.1.2.
Overvoltage, undervoltage and positive-phase-sequence
Refer to sections:
•
2.1.3.2. Overvoltage unit
•
2.1.3.3. Undervoltage unit
•
2.1.3.4. Positive-phase-sequence protection
59
U12
U23
U31
PrFU5_
3
47
27
59
27
DEFINITE- OR INVERSE-TIME OVERVOLTAGE
PROTECTION, LOW-SET STAGE
PO1
PO2
SO1
SO2
IRF
DEFINITE- OR INVERSE-TIME
UNDERVOLTAGE PROTECTION,
LOW-SET STAGE
DEFINITE- OR INVERSE-TIME
UNDERVOLTAGE PROTECTION,
HIGH-SET STAGE
SERIAL COMMUNICATION
REMOTE RESET, REMOTE SETTING CONTROL OR
BLOCKING INPUT FOR THE DIFFERENT PROTECTION
STAGES
62 BF
CIRCUIT-BREAKER FAILURE
PROTECTION
DEFINITE- OR INVERSE-TIME POSITIVE-
PHASE-SEQUENCE PROTECTION
DEFINITE- OR INVERSE-TIME OVERVOLTAGE
PROTECTION, HIGH-SET STAGE
OPTICAL
PC-INTERFACE
BINARY INPUT BI