| 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 |
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