| Brand | Switchgear parts |
| Numero sa Modelo | GRV8-4UVS 3 Phase Under Over Voltage Relay Relay ng GRV8-4UVS 3 Phase Under Over Voltage |
| Nasodnong peryedyo | 45Hz-65Hz |
| Serye | GRV8 |
Ang GRV8-4UVS usa ka state-of-the-art 3 phase under over voltage relay nga gihimo aron protektahan ang mga industriyal ug komersyal nga equipment gikan sa pagbaba sa voltage ug mga problema nga may kalabutan sa phase. Ginuhit alang sa reliability, kini nga relay nag-monitor sa tanang tulo ka phase aron masigurado ang stable nga operasyon sa motors, HVAC systems, ug uban pang critical loads. Ang iyang advanced nga features ug compact design naghimo kini usa ka essential nga component aron maprotektahan ang system integrity ug maprevent ang costly nga downtime.
Rated Voltage:AC 220V / 380V / 400V
Frequency Range:45Hz – 65Hz
Measurement Accuracy:<1%
Under Voltage Range:Adjustable (e.g., 160V – 210V per phase)*
Trip Delay Time:Adjustable (e.g., 0.1s – 10s)*
Comprehensive 3-Phase Monitoring: Tracks voltage levels across all three phases to detect under voltage and phase anomalies.
Customizable Protection: Adjustable under voltage thresholds and trip delays for tailored system protection.
Wide Frequency Range: Operates seamlessly within 45Hz to 65Hz, suitable for global power standards.
Clear Status Display: LED indicators provide instant feedback on relay operation and system health.
Efficient Installation: Compact 36mm width with DIN rail mounting for easy integration into control panels.
| Model | GRV8-4UVS Three Phase Under Voltage Relay |
| Function | Under voltage |
| Monitoring terminials | L1-L2-L3-N |
| Supply terminals | L1-N |
| Rated supply voltage(Un) | 220V/230V/240V |
| Rated supply frequency | 45Hz-65Hz |
| Under voltage threshold | S:70%-95%of Un |
| Trip delay time(Tu) | 0.1s |
| Hysteresis | 5V |
| Measurement error | ≤1% |
| Power on delay time(Td) | Adjustable: 5min-15min |
| Recovery delay time(Tr) | Adjustable: 5min-15min |
| Konb setting accuracy | 10% of scale value |
| Supply indication | green LED |
| Output indication | red LED |
| Output | 1×SPDT |
| Current rating | 10A/AC1 |
| Switching voltage | 250VAC/24VDC |
| Mechanical life | 1*107 |
| Electrical life(AC1) | 1*105 |
| Operating temperature | -20℃ to +55℃(-4℉ to 131℉) |
| Storage temperature | -35℃ to +75℃(-22℉ to 158℉) |
| Mounting/DIN rail | Din rail EN/IEC 60715 |
| Protection degree | IP40 for front panel/IP20 terminals |
| Operating position | any |
| Overvoltage category | III |
| 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) |
| Tightening torque | 0.8Nm |
| Dimensions | 90×18×64mm |
| Weight | 63g,65g |
| Standards | EN 60255-1,IEC60947-5-1 |