ABB RELION REX640 - Page 1238

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CR_PRM

CR_INTER_TR

CS_PRM

CS_BLOCKING

CS_INTER_TR

DCUB

CRG

BLOCK

CSUR

CACC

CSOR

BLK_CS_OPR

CSBLK

OPERATE

DUTT

PUTT

POTT

DCB

CRL

LCG

CR_BLOCKING

Multiplexer

AND

Figure 703: Functional module diagram

The applied communication scheme logic in DSOCPSCH is selected with the

Scheme

type

setting.

Table 1181: Communication scheme based on the Scheme type value

Scheme type

value Communication scheme

"Intertrip" DUTT

"Permissive Underreach" PUTT

"Permissive Overreach" POTT

"Blocking" DCB

The unblocking scheme (DCUB) is enabled with the

Unblock Mode

setting.

Multiplexer

The multiplexer connects an input signal to an output based on the value of the

Scheme type

setting.

Protection related functions

1MRS759142 F

1238 REX640

Technical Manual

Main Page

Contents7
1 Introduction30
2 REX640 overview42
3 Basic functions57
4 Protection functions326
5 Protection related functions1157
6 Supervision functions1302
7 Condition monitoring functions1359
8 Measurement functions1433
9 Control functions1505
10 Power quality measurement functions1807
11 General function block features1858
12 Requirements for measurement transformers1915
- 12.1 Current transformers1915
  - 12.1.1 Current transformer requirements for overcurrent protection1915
  - 12.1.2 Current transformer requirements for transformer differential protection1918
13 Protection relay's physical connections1922
14 Technical data1940
15 Protection relay and functionality tests1949
16 Applicable standards and regulations1953
17 Glossary1954
Blank Page1959

ABB RELION REX640 - Page 1238

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