| Brand | Switchgear parts |
| Numero ng Modelo | Relay na Pabor sa Prekwenya ng GRF8-01 |
| Larawan na Pagsasahimpapawid | 40Hz-70Hz |
| Serye | GRF8 |
Ang GRF8-01 frequency relay ay isang high-precision at highly reliable na power monitoring device na disenyo ng espesyal para sa power frequency monitoring at proteksyon. Kilala rin ito bilang power frequency monitoring relay, frequency monitoring relay, o dual-mode frequency adjustable relay. Ang produktong ito ay naglalaman ng intelligent functions at user-friendly operation, at maaaring malawakang gamitin sa generator sets, power systems, at industrial equipment. Ang estabilidad ng power frequency at ang kaligtasan ng operasyon ng equipment ay nagbibigay ng epektibong tagapaglaban para sa mga critical power scenarios.
Paggamit ng GRF8-01 frequency relay product:
Bilang frequency guardian ng power system, ang GRF8-01 ay gumagana sa mga sumusunod na aspeto:
1. Generator set monitoring: Real-time detection ng output frequency ng diesel/gas generator. Kapag ang pagbabago ay lumampas sa naka-set na threshold na ± 2%, ang mekanismo ng proteksyon ay natrigger sa loob ng 0.1 segundo upang iwasan ang pinsala sa equipment
2. Microgrid system: pagkakamit ng multi power frequency synchronization at precise phase matching sa panahon ng grid switching sa integrated wind solar energy storage systems
3. Industrial production line: nagbibigay ng frequency anomaly warning para sa precision machining equipment upang iwasan ang batch defects dahil sa mga pagbabago ng power grid
4. Ship power system: sertipikado batay sa EN60945, angkop para sa maalat at may salitre na kapaligiran sa dagat, nag-aaseguro ng estabilidad ng power supply para sa ship auxiliary equipment
Mga katangian ng produkto ng GRF8-01 frequency relay:
1. Dual power monitoring mechanism
Hindi lamang ang GRF8-01 ang real-time monitoring ng external power frequency, kundi mayroon din itong continuous monitoring function ng sarili nitong working power supply. Ang disenyo na ito ay epektibong iwasan ang mga pagkakamali sa monitoring dahil sa abnormal internal power supply ng equipment, nagpapataas ng reliability ng sistema mula sa pinagmulan, at nag-aaseguro na walang blind spots sa monitoring.
2. Intelligent frequency switching adaptation
May built-in 50Hz/60Hz dual-mode adjustable configuration, maaaring mabilis na iswitch sa pamamagitan ng panel dip switch, perfect na nag-aadapt sa power grid standards sa iba't ibang rehiyon sa buong mundo. Ano man ang European industrial equipment o power generation units sa Asia Pacific region, maaari silang seamless compatible at palawakin ang application scenarios ng equipment.
3. Multi state visualization diagnosis
Innovatively adopting LED indicator light system: green, red, combined with strobe coding technology, supporting rapid identification of 21 types of faults. With the design of a transparent observation window, operation and maintenance personnel can intuitively grasp the equipment status from 10 meters away, greatly reducing the time for fault location.
4. Dual mode fault recovery system
Industry mechanical rotary recovery mode selector, providing two strategies: "fault locking" and "automatic reset". Maintain a safe state after a critical system failure in lock mode and wait for manual intervention; Automatic reset mode with adjustable delay restart, especially suitable for unmanned power plants. The knob adopts IP20 protection level and is suitable for high dust and humid environments.

| Model | GRF8-01 Frequency Relay |
| Function | Monitoring frequency |
| Supply terminals | A1-A2 |
| Rated supply voltage | AC120-277V |
| Supply voltage limits | AC100-310V |
| Monitoring frequency range | 40Hz-70Hz |
| Over threshold value | -2…+10 Hz |
| Under threshold value | -10…+2 Hz |
| Hysteresis | fixed 0.3Hz |
| Measurement error | ±0.05Hz |
| Time delay | Adjustable 0.1s-10s,10% |
| Delay at power up | 0.5s |
| Temperature coecient | 0.05%/℃,at=20℃(0.05%℉,at=68℉) |
| Output indication | green LED |
| Output | 2×SPDT |
| Current rating | 8A/AC1 |
| Switching voltage | 250VAC/24VDC |
| Min.breaking capacity DC | 500mW |
| Fault indication | red LED |
| 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 cathegory | 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 | 0.4Nm |
| Dimensions | 90×18×64mm |
| Weight | 59g |
| Standards | EN/IEC60947-5-1 |