Click on the image to view the original image
1.Product attributes
GKR ve DGR series "over and under voltage" moitoring devices are adjustable "delay OFF"protection devices. they are mainly used for protection for 3-phase and single-phase systems-such as electronic command and control systems,capacitors fo power compensation, switch-boards ,air-condition systems,motors etc.
Utilization and Operation Principles
For all relays
"on" is the supply led
"out" is normal led
"U>"is over voltage error led
"U<"is under voltage errror led
1-When the device is energized for the first time."On" led is ON and if the monitored voltageare 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 switched OFF and "OUT" led turns OF.
3-When any of the phase/phases exceed(s) the adjusted interval,"U>" error led turns ON,after0.1-10 sec output relay switches OFF and "Out"led turns OFF.
look at table 1
*For under voltage monitoring device switched OFF its output relay instantaneously when the measured voltage(s) fall(s) below 50% of its nominal value.
For over voltage monitoring device switches OFF its output relay immediately when the measured voltage(s) exceeds 50% fo its nominal value.
GKR-02F /GKRC-02F/ GKRC-02FA /GKR-03F/GKRC-03F/ switches off output relay instantaneously in case of incorrect phase sequence then all leds turn off except "ON" led.
Technical Data:
| Rated voltage(Un) | Look it the label of the device |
| Rated frquuency | 50/60Hz |
| Operating range | (0.9-1.1)×Un |
| Voltage adjustment | Max: (1,05-1,03) ×Un |
| Min: (0,70-0,95) ×Un | |
| Delay time | 0.1-10sn.min.(adjustible) |
| Output contact | 1C/O 8A,2000VA, |
| Set point hysteresis | 3% |
| Ambient temperature | -5°C;+50°C |
| installition | Surface mounted or rail mounted |
| Dimension | Type PK10/PK21/PK25 |
| Protection class | IP20 |
2.Product display
