| Brand | MV Switchgear Accessories |
| Numero ng Modelo | GRV8-4UVR Tres Fase Under Voltage Relay |
| Larawan na Pagsasahimpapawid | 45Hz-65Hz |
| Serye | GRV8 |
Ang GRV8-4UVR ay isang espesyal na tatlong phase under voltage relay. Ang kanyang kompak na lapad na 36mm ay nagbibigay ng walang tiyak na pag-install sa mga kontrol panel na may limitadong espasyo, habang ang maaaring i-adjust na setting ay nagbibigay ng flexibility para i-tailor ang proteksyon sa iyong partikular na pangangailangan. Anuman ang iyong pinamumunuan, maging ito ay isang manufacturing plant, HVAC system, o power distribution network, ang GRV8-4UVR ay nagbibigay ng precision at reliabilidad na kailangan mo.
Supply Voltage: AC 220V / 380V / 400V
Measuring Frequency Range: 45Hz – 65Hz
Voltage Measurement Accuracy: <1%
Under Voltage Setting Range: Adjustable (e.g., 170V – 210V per phase)*
Trip Delay Time: Adjustable (e.g., 0.1s – 10s)*
3-Phase Voltage Monitoring: Sa kabaligtaran ng single-phase relays, ang GRV8-4UVR ay nagsasagawa ng monitoring sa lahat ng tatlong phases nang pare-pareho, nagbibigay ng balanced protection para sa mga sistema kung saan ang integrity ng phase ay mahalaga.
Adjustable Under Voltage Thresholds: Fine-tune ang under voltage protection levels upang tumugon sa partikular na pangangailangan ng iyong equipment.
Phase Imbalance and Sequence Protection: Nakakadetect at sumasagot sa phase imbalances at maliwang sequence, nagpre-prevent ng motor damage at system failures.
True RMS Measurement: Nagse-ensure ng accurate voltage detection, kahit sa mga kapaligiran na may harmonics o non-linear loads.
LED Indicators: Nagbibigay ng malinaw, real-time status updates para sa madaling monitoring at diagnostics.
Compact Design: Ang 36mm width at DIN rail mounting ay ginagawa ito na ideal para sa space-efficient installations sa mga kontrol panel.
| Model | GRV8-4UVR Three Phase Under Voltage Relay |
| Operating temperature | -20℃ to +55℃（-4℉ to 131℉） |
| Storage temperature | -35℃ to +75℃（-22℉ to 158℉） |
| Trip delay time(Tu) | 0.1s |
| Tightening torque | 0.8Nm |
| Electrical life(AC1) | 1*105 |
| Mechanical life | 1*107 |
| Konb setting accuracy | 10% of scale value |
| Current rating | 10A/AC1 |
| Output | 1×SPDT |
| Rated supply voltage(Un) | 220V/230V/240V |
| Switching voltage | 250VAC/24VDC |
| Rated supply frequency | 45Hz-65Hz |
| Hysteresis | 5V |
| Weight | 63g,65g |
| Dimensions | 90×18×64mm |
| Power on delay time(Td) | Adjustable: 5min-15min |
| Recovery delay time(Tr) | Adjustable: 5min-15min |
| Mounting/DIN rail | Din rail EN/IEC 60715 |
| Standards | EN 60255-1,IEC60947-5-1 |
| Overvoltage category | III |
| Protection degree | IP40 for front panel/IP20 terminals |
| Monitoring terminials | L1-L2-L3-N |
| Supply terminals | L1-N |
| Under voltage threshold | R:fixed 75% of Un |
| Function | Under voltage |
| Operating position | any |
| Supply indication | green LED |
| Output indication | red LED |
| Measurement error | ≤1% |
| Pollution degree | 2 |
| Max.cable size(mm²） | solid wire max.1*2.5 or 2*1.5/with sleeve max.1*2.5（AWG 12） |
