Over-load And Phase Loss Three Phase Motor Protector
Applications:
Overload, phase failure, rotor-locked, Asymmetry protection
Functions:
Micro processor inside, with high reliability and high anti-interference ability. Over-load, phase-loss, locked-rotor and asymmetry protection. Setting current by scale accurately. Inverse time over-load protection, with 4 tripping class selectable. LED indication for current of 3 phase, with accuracy ≤ 2%. Can be started without load. Over-load and phase loss protection for any single phase.
Technical parameters:
Features:
Microprocessor based
Overload, phase failure, rotor-locked, Asymmetry protection
Current setting by potentiometer
LED indication for three phase current, measuring error≤ 2%
Can be started without load
Application:
Used for protecting three phase motor
| Model |
Setting current range |
Matched motor(AC 380V) |
Note |
| ZHRA2-1A~5A |
1A~5A |
0.5kW~2.5kW |
Straight-through |
| ZHRA2-2A~10A |
2A~10A |
1kW~5kW |
| ZHRA2-6A~30A |
6A~30A |
3kW~15kW |
| ZHRA2-16A~80A |
16A~80A |
8kW~40kW |
| ZHRA1-40A~200A |
40A~200A |
20kW~100kW |
| ZHRA2-80A~400A |
80A~400A |
40kW~200kW |
Operating Instructions
1.Connect the wires according to wiring diagram and make sure it is correct.
2.Adjustment of setting current: adjust the setting current of protector to the value that is equal to the rated current value of motor please refer to the nameplate of motor The setting current value of protector shall be adjusted through and keys of toggle switch on protector panel in power-off state.
If the set current value goes beyond the range of setting current, the LED nixie tube of protector equipped with LED nixie tube would display the message Err ,
if the protector is not provided with LED nixie tube, the phase failure and over-load LED indicator lamps would flash simultaneously to indicate the setting error.
3.Re-confirm the correctness of wiring. Turn on the power supply after the setting current value is set correctly and the run indicator lamp of protector would go ON indicating the start of operating state.
4.When operating current is less than 1000A, LED nixie tube would display the three-phase current value in a cyclic manner when operating current is greater than or equal to A LED nixie tube would display the maximum phase current value but not display the positions of the three phases .
5.The maximum displayed value of protector with LED nixie tube is 10 times the setting current value when current value is less than of minimum setting current value the current would be displayed as 0 .
6.After the failure protection of protector is activated, LED nixie tube of protector would display the current value of the last operation and the indicator lamp would keep indicating the failure state Power-off is needed to reset .
7.The red toggle of protector with a setting current specification of 1A~5A is one digit after decimal point .
Operational diagram
Wiring Diagram
Wiring diagram for direct start (used with AC220V contactor)
Wiring diagram for direct start (used with AC380V contactor)
Diagram of Overall Dimensions
More Products
Q1.Are you a factory or trading company ?
A:We are a factory founded in 2010 and have over 10 years'OEM and international trading experience .
Q2.What's your main product?
A:Our main products are time Relay, voltage Relay, motor protector, current relay,solid state relay
Q3.Do you accept OEM or ODM?
A:Of course.
Q4.What's your main payment term?
A:T/T ,LC ,D/P.
Q5.Any quality guarantee or after-sales service?
A:All the products have 2 years' Guarantee. If any quality complaint , we will give out solution within 5 days
Q6.Can sample fee be returned back to me ?
A:Sample amount can be deducted from your bulk order payment when order quantity is over 1000 pieces at the first time.
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