Schneider Electric Comprehensive Guide to EOCR Settings for 3BZ2, FBZ2, iFBZ, and i3BZ Models

EOCR-i3BZ/iFBZ/3BZ2/FBZ2

EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,

EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT

EOCR-i3BZ / i3BZ2 Bottom hole type

EOCR-iFBZ / iFBZ2 Bottom hole type

EOCR-i3BZi / 3BZ2 Terminal type EOCR-iFBZ / iFBZ2 Terminal type

General Features

Earth fault detection by built-in ZCT

Multifunctional motor protection for rated motor currents up to 80A (Definite Overcurrent protection) : Over Current, Under Current, Phase Loss, Phase Reversal, Stall, Jam, Current Imbalance, Earth Fault

Thermal Inverse / Inverse overload protection up to 32Amps by integrated CTs.

Real Time Processing / High Precision

Ancillary Functions : Fail Safe, Alert(“C” Type Only), Accumulated Running Hour, 3 Fault records & limitation of auto-reset attempt.

Communication : Modbus-RTU/RS-485(i3BZ/iFBZ only)

Reinforced Monitoring Function : Real Time Monitoring up to 400M, 3 Phase Current Display, Pre-alarm & Cause of Trip indication.

Load ratio indication of Load Current to over-current threshold.

Support Single-phase and 3 Phase Motor

For iFBZ / FBZ2, normal operation except display is guaranteed when PDM is disconnected

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