AC380V Motor Protector 3-160A Overload, Phase Failure, Short Circuit

AC380V Motor Protector 3-160A Overload, Phase Failure, Short Circuit Description

AC380V 3-160A Split Type 3 Phase Motor Protector Over Current Phase Failure Overload Under Load Protection

Item Type
     Motor Protector    
Protection Item
Operating conditions and setting range
Action time
Overload (definite time limit)
The running current exceeds the set value
0.5-60s
Setting range: 0.3-16A, 3-160A, 10-999A.
Overload (inverse time limit)
Operating current exceeds the set value
1-5 tripping curve inverse time limit
Setting range: 0.3-16, 3-160A, 10-999A
Underload
The operating current is lower than the set value. Put in after startup.
0.5-60s
The setting range is the same as the overload. Note: The underload value must be less than the overload value.
Phase failure
Current imbalance rate exceeds 50%
2s
Current imbalance
The current imbalance rate exceeds the set value. Setting range: 10-50%
5s
Unbalance rate = phase current - I average current maximum / I average current x 100%
Start delay
During the start-up of the motor, the protector will shield against overload, underload, locked-rotor, and unbalance protection. Note: A countdown will occur during the boot process.
0-200s
Locked-rotor
The running current exceeds the set overload factor and is put into operation after the start of the start.
3s
Setting range: 1.5-8 times overload current.
Short circuit
The operating current exceeds 10 times the set overload factor.
50MS
Leakage
The zero sequence current exceeds the set value. Setting range: 30ma-2.5A.
1S
A 5A/10mA zero-sequence current transformer must be connected.
Overvoltage
Operating voltage exceeds the set value, the return difference is 5%
5S
Setting range: 65-690V
Undervoltage
Operating voltage is lower than the set value, the difference is 5%
5S
Setting range: 65-600V