function point | function point descriptions | motor protection | line protection |
protection functions | Initiate timeout protection | √ | - |
overload protection, overcurrent blocking protection, short circuit protection | √ | - |
Current imbalance protection | √ | √ |
Voltage unbalance protection | √ | √ |
phase failure protection | √ | - |
ground fault synthesis computational protection | √ | √ |
Leakage protection / ground fault real pick protection (need to be equipped with zero sequence current transformer / grounding current transformer) | ○ | ○ |
(Either/or) | (Either/or) |
underload protection | √ | - |
overflow fault (fault current exceeding the breaking capacity of the contactor) trips the circuit breaker | √ | - |
Over-voltage protection, loss of voltage, under-voltage protection | √ | √ |
frequency protection, under power factor protection, phase sequence protection | √ | - |
Anti-Shake/Shake Restart | ○ | ○ |
External interlocks | √ | √ |
tE time protection | √ | - |
Electrical current interruption protection (low voltage blocking overcurrent section) | - | √ |
Current-limited quick disconnect protection (low voltage blocking overcurrent II) | - | √ |
Overcurrent protection (three stages of overcurrent) | - | √ |
Overload protection | - | √ |
Spring not storing energy alarm | - | √ |
PT disconnection alarm | - | √ |
Temperature protection (PTC/NTC) | ○ | - |
Control loop disconnection alarm | - | √ |
Negative sequence protection | - | √ |
under power protection | - | √ |
phase sequence protection | - | √ |
inverse time overcurrent | - | √ |
Three-stage fixed-time overcurrent | - | √ |
inverse time zero sequence overcurrent | - | √ |
three-segment time-limited zero-sequence overcurrent | - | √ |
real-time measurements | three-phase current, grounding current, three-phase current unbalance ratio | √ | √ |
Leakage current/grounding actual pickup current | ○ | ○ |
three-phase phase voltage, three-phase line voltage, frequency | √ | √ |
power factor, active power, reactive power, active energy, reactive energy | √ | √ |
zero sequence voltage, positive sequence voltage, negative sequence voltage | - | √ |
Power quality (including 2nd~63rd harmonics, voltage-current unbalance rate, harmonic distortion rate) | √ | √ |
line fault alarms | loss of voltage, overvoltage, undervoltage, voltage imbalance, voltage reverse order, voltage transient rise/fall | √ | √ |
Loss of current, overcurrent, current breakage, current imbalance, current reverse order | √ | √ |
overload, phase failure, demand overrun | √ | √ |
event logging | Line Fault Alarm, DI Transposition, Closing and Opening Records, up to 100 records | √ | √ |
Fault recording, up to 50 entries | √ | √ |
Motor running hours, stopping hours, number of normal circuit breaker trips, number of fault trips | √ | √ |
switching inputs | With 8-channel DI, built-in power supply, external passive trunk node | √ | √ |
Relay Output | With 5-way DO, AC 250/10A; DC 30V/10A | √ | √ |
analog output | Optional 1-channel DC4~20mA analog variable output | √ | √ |
digital communications | 2 RS485 interfaces, support MODBUS-RTU protocol | √ | √ |
undervoltage restart | With the voltage detection function module, it can realize the short-time under and voltage loss restart function | √ | - |
protection parameter settings | All kinds of protection fixed value query, adjusting | √ | √ |
system parameterization | Parameterization of rated voltage, rated current, and communication address | √ | √ |
LED indication | start, run, alarm/action, stop | √ | √ |
Online upgrade | Support 485 communication mode upgrade | ○ | ○ |
Note: "√" indicates that this function is standard, "○" indicates that this function is optional, and "-" indicates that this function is not available |