© A

LSTO

M 2

014.

All

right

s re

serv

ed.

X 50/51 67N/67W/64

50N/51N

67/67N 51V 46 49 37P/

37N

27/59 59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

LEDs

Self monitoring

81U/81O/81R

X50/51 67N/67W

/6450N/51N

67/67N

51V 46 4937P/37N

27/59

59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

Feeder management P14x

LEDs

BinaryInput / output

always available

optional

Vref

V

I

IE sen

Self monitoring

81U/81O/81R

Y

IEC 61850

X 50/51 67N/67W/64

50N/51N

67/67N 51V 46 49 37P/

37N

27/59 59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

LEDs

Self monitoring

81U/81O/81R

X50/51 67N/67W

/6450N/51N

67/67N

51V 46 4937P/37N

27/59

59N 47 50BF

CTS

VTS 79 25

YN 49SR

Fault records Disturbance Record

Measurements

PSL

Local Communication

2nd Remote comm. port

Remote comm. port

Feeder management P14x

LEDs

BinaryInput / output

always available

optional

Vref

V

I

IE sen

Self monitoring

81U/81O/81R

Y

IEC 61850

DIFFI

BIASIs2I

s1IK1

K2

Operate

Restrain

K1 0% to 20%

K2 0% to 150%

s1I 0.08 to 1. 0I n

s2I 0.10 to 1. 5I n

DIFFI

BIASIs2I

s1IK1

K2

Operate

Restrain

K1 0% to 20%

K2 0% to 150%

s1I 0.08 to 1. 0I n

s2I 0.10 to 1. 5I n

© A

LSTO

M 2

014.

All

right

s re

serv

ed.