Square D Digest 179

PowerLogic ™ P Series Protection Relays

PowerLogic P5 Applications

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Table 5.1 Protection Functions (cont'd.) Protection Functions

ANSI code

P5F30

P5M30

P5T30

Overspeed [5] Anti-backspin [5] Line protection Fault locator Auto-Recloser

12

— —

2 1

— —

ABS

21FL

1 1 1 1

— —

— —

79

Transformer protection Magnetizing inrush detection Fifth harmonic detection 2-winding transformer differential

68H2 68H5

1 1

2

—

87T

— —

— — — —

1 2

Thermostat / Buchholz Capacitor protection Capacitor bank unbalance Capacitor overvoltage Other protection Arc-flash detection Programmable stages Programmable curves

26–63

51C 59C

2 1

— —

50ARC

8 8 3 1 1 1 1 4

8 8 3

8 8 3

99 —

Control, monitoring, supervision Synchronization check

25 86 60 60 —

—

—

Lockout relay CT supervision VT supervision Setting groups

1 1 1 4

1 2

—

4

Table 5.2: Control Functions Control Functions Control with Mobile application Switchgear control and monitoring

P5F30

P5M30

● 6 2 ● ● ● ● 7 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

● 6 2 ● ● ● ● 7 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Switchgear monitoring only

Programmable switchgear interlocking Local control on single-line diagram

Local switchgear control with OPEN/CLOSE keys

Local/remote function

Function keys

Custom logic (equations)

Table 5.3: Measurement Functions Measurement functions

P5F30

P5M30

RMS current values RMS voltage values

RMS active, reactive and apparent power

Frequency

Fundamental frequency current values Fundamental frequency voltage values

Fundamental frequency active, reactive and apparent power values

Power factor

Motor speed detection [5]

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

5 PROTECTION, CONTROL, AND ENERGYAUTOMATION

Maximum and minimum values: currents Maximum and minimum values: voltages Maximum and minimum: frequency Table 5.4: Logs and Records Logs and records

P5F30

P5M30

Sequence of event record Disturbance record Tripping context record Relay maintenance data log

● ● ● ● ●

● ● ● ● ●

Security data log

Table 5.5: Monitoring Functions Monitoring functions

ANSI code

P5F30

P5M30

Trip circuit supervision Circuit breaker monitoring

74 — —

1 1 ●

1 1 ●

Relay monitoring

Function available if 12 DI / 4 DO board is present.

[5]

5-5

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