Easergy P5F30 Schneider Electric Numeric Relays is designed for the operation of electrical distribution networks of industrial installations and utility substations for all levels of voltages. It offers a complete set of current and voltage-based protection functions, measurements, control facilities and recording/monitoring functions for efficient operation of the power system. It is suitable for application on solidly grounded, impedance grounded, Petersen coil grounded and isolated systems.

Protection function:

Phase  overcurrent  50/51

Directional  phase  overcurrent  67

Earth  fault  overcurrent  50N/51N

Directional  earth  fault  67N

Transient  earth  fault  67NI

Neutral  admittance  21YN

Earth  fault  wattmetric  32N

Capacitor  bank  unbalance  51C

Broken  conductor  46  12/11

Current  unbalance  46  12/11

Cold load pick-up

Switch ON to fault (SOTF)

H2 detection

H5 detection

Breaker failure 50BF

Directional active underpower 37P

Fault locator 21FL

Recloser 79

Negative sequence overcurrent 46

Overvoltage 59

Undervoltage 27

Earth fault overvoltage 59N

Underfrequency 81/81N

Rate of change of frequency 81R

Synchro-check 25

Lockout relay 86

CT supervision 60

VT supervision 60

Programmable stages 99

Programmable logic

Programmable curve