ManHua 3 Phase GKR-02 voltage monitoring device protect motor from phase failure and voltage unbalance

Description:

GKR series“over and under voltage”monitoring devices are adjustable“delay OFF”protection devices. They are mainly used for protection of 3-phase and single-phase systems-such as electronic command and control systems,capacitors of power compensation, switch-boards ,air-condition systems,motors etc. 

Technical data:

Rated frequency:50/60Hz

Voltage adjustment(L-L):Umax:(1,05-1,30)×Vin

                                           Umin:(0,70-0,95)×Vin

Delay time:0.1-10sn.min.(adjustable)

Output contact:1 C/O,8A,2000VA,cosψ=1

Set point hysteresis:%3

Ambient temperature:-5℃;+50℃

Installation:Surface mounted or rail-mounted

Protection class:IP20

Utilization and Operation Principles:

"On" is the supply led

"Out" is normal led

"U>"is over voltage error led

"U<"is under voltage error led

1-When the device is energized for the first time."On" led is ON and if the monitored voltages are within the adjusted range "Out" led is ON and output relay switches ON.

2-When any of the phase/phases fall(s) below the adjusted interval,"U<" error led turns ON,after 0.1-10sec,output relay switches OFF and "Out" led turns OFF.

3-When any of the phase/phases exceed(s) the adjusted interval,"U>" error led turns ON,after 0.1-10 sec output relay switches OFF and "Out"led turns OFF.

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Quality assurance:

1.One year guarantee. 

2.If the item is defective upon receipt, it should be within 7days from the date of receipt for exchange a new one (Buyer should return all original and undamaged items under re-saleable condition).

3.We supply free repairing service within one year of purchase. For the first 1 month, we will pay one way shipping cost(from us to your location);After 1 month of purchase, the buyer need to pay two ways of shipping cost. 

4.One we get the returned items, we will send the replaced ones back as soon as possible.

5.Our warranty does not extend to any products that are physically damaged or under un-normal operating conditions as a result of misuse or improper installation on the parts.

Contact Me:

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