ABB REJ 527, Product Manual

Directional or Non-Directional Earth-Fault 
Relay

REJ 527

1MRS751132-MBG

10

Connection 
diagram

Ordering

T

Configuration, setting and SA system 
tools

The following tool versions are needed to 
support the new functions and features of 
REJ 527 Release B:

• CAP 505 Relay Product Engineering 

Tools; CAP 505 v. 2.1.1, or later

• CAP 501 Relay Setting Tools; CAP 501 v. 

2.1.1, or later

• LIB 510 Library for MicroSCADA; LIB 

510 v. 4.0.3-1, or later

• SMS 510 Substation Monitoring System; 

SMS 510 v. 1.0.0-3, or later

References

Fig. 1

Connection diagram of the directional earth-fault relay

L1
L2
L3

PC

100V

~

~

PO1

I

O

PO2

+

+

IRF

+

+

-

-

+

+

BI

0

I

IRF

+      -

Uaux

START

TRIP

START

TRIP

1

2

3

SGB1

SGB1

SGB1

Io>>

SGR1

SGR2

SGR3

SGR4

X

3

X

3

2

X

2

X

1

X

1

X

X

4

X

4

X

4

X

3

2

X

1

X

SGR5

SGR6

START

TRIP

5    6

3    4

13   14  15

1       2

17   18

 1         2   3         4               6

SGB1

SGB1

SGB1

5

6

7

10   11  12

7      8    9

SO1

X2.1

X2.1

X2.1

SO2

X2.1

X2.1

X2.1

X2.1

X1.1

1MKC950001-1

RER 103

Tx

Rx

Io>

Uob>

P1

P2

S2

S1

A

N

da

dn

ConD527

4 SGB1

*

REJ527B 418BAA:

2 = 5 A

3 = 1 A

  REJ527B 411BAA:

2 = 1 A

3 = 0.2 A

*

Blocking of stage Io>>

Blocking of stage Io>

Blocking of stage Uob>

X=Default value

Optical

PC-interface

Spa Bus

I/O

INDICATIONS CLEARED

OUTP. CONT. UNLATCHED

AND INDIC. CLEARED

SWITCHGROUP SELECTION

MEMORIZED VALUES AND

INDIC. CLEARED; OUTPUT

CONTACTS UNLATCHED

Order numbers

Order number (I

0

 inputs 0.2 A/1 A)

REJ527B 411BAA 
(Article nr:1MRS091411-BAA)

Order number (I

0

 inputs 1 A/5 A)

REJ527B 418BAA 
(Article nr:1MRS091418-BAA)

Accessories

Protective cover for rear connectors

1MRS060132

Flush mounting kit

1MRS050209

Semi-flush mounting kit

1MRS050253

Wall mounting kit

1MRS050240

Side-by-side mounting kit

1MRS050241

19” Rack mounting kit

1MRS050257 

Optic bus connection module (RER 103)

1MRS090701

Opto-cable

1MKC950001-1

Additional information

Technical Reference Manual

1MRS 750616-MUM

Installation Manual

1MRS 750526-MUM

Operator’s Manual

1MRS 751055-MUM