PowerLogic P5 Applications

Current protection

Phase overcurrent

50/51

6

6

Earth/ground fault overcurrent^[1]

50N/51N

6

6

Directional phase overcurrent

67

6

6

Directional earth/ground fault overcurrent

67N

6

3

Transient intermittent/ground fault

67NI

1

—

Neutral admittance

21YN

2

2

Negative sequence overcurrent

46 (I2/I1)

2

2

Current unbalance, Broken conductor

46BC (I2)

2

—

Breaker failure

50BF

1

1

Phase undercurrent

37

1

1

Switch on to fault (SOTF)

50HS

1

1

Cold load pickup (CLP or CLPU)

—

1

1

Voltage protection

Undervoltage

27

3

3

Overvoltage

59

3

3

Earth/ground fault overvoltage

59N

3

3

Negative sequence overvoltage

47

2

2

Frequency protection

Over and/or underfrequency

81

2

2

Underfrequency

81U

8

8

Rate of change of frequency

81R

9

—

Thermal protection

Thermal overload

49

1

1

Temperature monitoring

38

16

16

Power protection

Wattmetric earth/ground fault

32N

2

2

Directional active underpower

32/37N

2

2

Rotating machine protection

Frequent start inhibition

66

—

1

Motor start-up supervision, locked rotor

48/51LR

—

1

Positive sequence undervoltage

27P

—

2

Underspeed^[2]

14

—

2

Overspeed^[2]

12

—

2

Anti-backspin^[2]

ABS

—

1

Line protection

Fault locator

21FL

1

—

Auto-Recloser

79

1

—

Transformer protection

Magnetizing inrush detection

68H2

1

1

Fifth harmonic detection

68H5

1

1

2-winding transformer differential

Thermostat / Buchholz

Capacitor protection

Capacitor bank unbalance

51C

2

—

Capacitor overvoltage

59C

1

—

Other protection

Arc-flash detection

50ARC

8

8

Programmable stages

99

8

8

Programmable curves

—

3

3

Control, monitoring, supervision

Synchronization check

25

1

—

Lockout relay

86

1

1

CT supervision

60

1

1

VT supervision

60

1

1

Setting groups

—

4

4

Control with Mobile application

●

●

●

●

Switchgear control and monitoring

6

6

Switchgear monitoring only

2

2

Programmable switchgear interlocking

●

●

●

●

Local control on single-line diagram

●

●

●

●

Local switchgear control with OPEN/CLOSE keys

●

●

●

●

Local/remote function

●

●

●

●

Function keys

7

7

Custom logic (equations)

●

●

●

●

RMS current values

●

●

●

●

RMS voltage values^[3]

●

●

●

●

RMS active, reactive and apparent power

●

●

●

Frequency

●

●

●

●

Fundamental frequency current values

●

●

●

●

Fundamental frequency voltage values^[3]

●

●

●

●

Fundamental frequency active, reactive and apparent power values

●

●

●

Power factor

●

●

●

Motor speed detection^[2]

●

●

Energy values: active and reactive

●

●

●

Demand values: phase currents

●

●

●

●

Demand values: active, reactive, apparent power and power factor

●

●

●

Maximum demand values: phase currents

●

●

●

●

Minimum and maximum demand values: RMS phase currents

●

●

●

●

Minimum and maximum demand values: active, reactive, apparent power and power factor

●

●

●

Maximum demand values over the last 31 days and 12 months: active, reactive, apparent power

●

●

●

Minimum demand values over the last 31 days and 12 months: active, reactive power

●

●

●

Maximum and minimum values: currents

●

●

●

●

Maximum and minimum values: voltages^[3]

●

●

●

●

Maximum and minimum: frequency

●

●

●

Sequence of event record

●

●

●

●

Disturbance record

●

●

●

●

Tripping context record

●

●

●

●

Relay maintenance data log

●

●

●

●

Security data log

●

●

●

●

Trip circuit supervision

74

1

1

1

2

Circuit breaker monitoring

1

1

1

1

Relay monitoring

●

●

●

●