| Brand | ROCKWILL | 
| Numero sa Modelo | 750kV Serye sa Porcelain-Housed Metal Oxide Surge Arreste | 
| Naka nga boltahang rated | 600kV | 
| Nasodnong peryedyo | 50/60Hz | 
| Serye | Y20W | 
Paglalarawan ng 750kV Series Porcelain-Housed Metal Oxide Surge Arresters
Ang 750kV Series Porcelain-Housed Metal Oxide Surge Arresters ay mga kritikal na protective devices na disenyo para sa ultra-high voltage (UHV) power systems, partikular na para sa 750kV transmission lines, substations, at key equipment tulad ng transformers at circuit breakers. Ang pangunahing tungkulin nito ay suppresyon ng transient overvoltages na dulot ng lightning strikes, switching operations, o grid faults, pagdala ng excessive surge currents sa lupa habang nagpapanatili ng stable voltage levels sa normal operation. Nakapaloob sa high-strength porcelain housings, ang mga ito ay nagintegrate ng advanced metal oxide varistor (MOV) technology upang magbigay ng robust protection, sinisigurado ang safety at reliability ng 750kV grid infrastructure laban sa electrical surges na maaaring magresulta sa equipment damage o widespread power outages.
Mga Katangian ng 750kV Series Porcelain-Housed Metal Oxide Surge Arresters
Ultra-High Voltage Handling Capacity: Disenyo para mag-operate sa 750kV systems, may rated voltage na tugma sa requirements ng grid. Maaari silang epektibong clampin ang overvoltages sa loob ng safe limits, kahit sa ilalim ng extreme surge conditions, kaya angkop sila para sa large-scale UHV transmission networks.
Durable Porcelain Enclosure: Ang porcelain housing ay nagbibigay ng exceptional mechanical strength at environmental resistance, nakakatipon ng harsh conditions tulad ng high humidity, pollution, extreme temperatures (-40°C hanggang 60°C), at seismic activity. Nagbibigay ito ng reliable insulation at physical protection para sa internal components.
Advanced Metal Oxide Varistors (MOVs): Nakakamit ng high-performance MOVs na may excellent non-linear resistance characteristics. Ang mga component na ito ay mabilis na nagco-conduct ng surge currents sa panahon ng overvoltage events at bumabalik sa high-resistance state sa normal operation, minimizing leakage current (typically <100μA) upang bawasan ang energy loss.
High Surge Withstand Capability: Kayang i-handle ang malalaking impulse currents (hanggang sa ilang hundred kA) mula sa lightning o switching surges, sinisigurado ang stable performance sa panahon ng transient events. Ang mataas na tolerance na ito ay protektado ang adjacent equipment mula sa voltage spikes.
Series Configuration Adaptability: Disenyo para sa series connection upang makatugon sa 750kV voltage level, may integrated grading devices (tulad ng capacitors o rings) upang siguruhin ang uniform voltage distribution sa lahat ng units, pinaigting ang overall system stability.
Low Maintenance Requirements: Ang porcelain housing ay corrosion-resistant at self-cleaning sa most environments, binabawasan ang pangangailangan para sa regular na maintenance. Marami sa mga modelo ay may monitoring ports para sa leakage current at temperature checks, pinagbibigyan ang predictive maintenance.
Compliance with International Standards: Sumasang-ayon sa mahigpit na industry standards tulad ng IEC 60099-4 at ANSI/IEEE C62.11, sinisiguro ang compatibility sa global 750kV power systems at adherence sa safety at performance benchmarks.
Model  |  
   Arrester  |  
   System  |  
   Arrester Continuous Operation  |  
   DC 1mA  |  
   Switching Impulse  |  
   Nominal Impulse  |  
   Steep - Front Impulse  |  
   2ms Square Wave  |  
   Nominal  |  
  
Rated Voltage  |  
   Nominal Voltage  |  
   Operating Voltage  |  
   Reference Voltage  |  
   Voltage Residual (Switching Impulse)  |  
   Voltage Residual (Nominal Impulse)  |  
   Current Residual (Steep - Front Impulse)  |  
   Current - Withstand Capacity (2ms Square Wave)  |  
   Creepage Distance  |  
  |
kV  |  
   kV  |  
   kV  |  
   kV  |  
   kV  |  
   kV  |  
   kV  |  
   A  |  
   mm  |  
  |
(RMS Value)  |  
   (RMS Value)  |  
   (RMS Value)  |  
   Not Less Than  |  
   Not Greater Than  |  
   Not Greater Than  |  
   Not Greater Than  |  
   20 Times  |  
   ||
(Peak Value)  |  
   (Peak Value)  |  
   (Peak Value)  |  
   (Peak Value)  |  
   ||||||
Y20W1-600/1380GW  |  
   600  |  
   750  |  
   462  |  
   810  |  
   1135  |  
   1380  |  
   1462  |  
   2500  |  
   26400  |  
  
Y20W1-648/1491GW  |  
   648  |  
   750  |  
   498  |  
   875  |  
   1226  |  
   1491  |  
   1578  |  
   2500  |  
   26400  |  
  
Y20W1-600/1380W  |  
   600  |  
   750  |  
   462  |  
   710  |  
   1135  |  
   1380  |  
   1462  |  
   2500  |  
   24000  |  
  
Y20W1-648/1491W  |  
   648  |  
   750  |  
   498  |  
   875  |  
   1226  |  
   1491  |  
   1578  |  
   2500  |  
   24000  |