Product Overview
The BEC-812 is a protection and control device specifically designed for medium and high voltage motors up to 10 kV. It integrates protection, measurement, and control functions into a single unit and can be installed independently or integrated into panels.
Protection Functions
The device offers a comprehensive motor protection configuration, covering phase-to-phase faults, unbalanced faults, overload, ground faults, current abnormalities, voltage abnormalities, power direction, system abnormalities, and Non-electric Protection
Control Functions
Supports local/remote open and close operations, remote setting modification, remote protection enabling/disabling, programmable outputs, as well as CT power harvesting and split trip functions.
Application Examples
3–10 kV motor circuits
Industrial power distribution
3–10 kV motors/pumps in industrial equipment
The BEC-812 provides a comprehensive, accurate, and efficient protection and control solution for large motors.
Function | Specification | BEC-812AA型 | BEC-812KA型 |
Protection Function | Phase-to-phase overcurrent protection | 50/ 51P | √ | √ |
Negative-sequence overcurrent protection | 50/51Q | √ | √ |
Overload protection | 51O | √ | √ |
Zero-sequence overcurrent protection | 50G / 51G | √ | √ |
Undercurrent protection | 37 | √ | √ |
Overvoltage protection | 59P | √ | √ |
Undervoltage protection | 27P | √ | √ |
Positive-sequence undervoltage protection | 27V1 | √ | √ |
Negative-sequence overvoltage protection | 59V2 | √ | √ |
Zero-sequence overvoltage protection | 59G | √ | √ |
Reverse power protection | 32 | √ | √ |
Thermal overload protection / Overtemperature protection | 49 | √ | √ |
Breaker failure protection (BFP) | 50BF | √ | √ |
Loss of synchronism protection / Out-of-step protection | 68 | √ | √ |
Non-Electric Protection/Binary Input | MR | √ | √ |
Data Sampling | Voltage | √ | √ |
Current | √ | √ |
Active/Reactive Power | √ | √ |
Power Factor, Frequency | √ | √ |
Binary Input | 6 | 13 |
Active/Reactive Energy | √ | √ |
Fault Recording | √ | √ |
Data Recording | Protection events | √ | √ |
Alarm events | √ | √ |
Remote signaling | √ | √ |
SOE events | √ | √ |
Operation log | √ | √ |
Control | Local/remote open and close operations | √ | √ |
Remote setting modification | √ | √ |
Remote protection enabling/disabling | √ | √ |
Programmable protection/signal outputs | √ | √ |
CT power harvesting, split trip | √ |
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