GE Multilin的469系列的這種增強模型能夠保護和控制中型到大型電機系統(tǒng)。469-P1-HI-A20-E-H也是大多數(shù)型號的獨特之處，因為它配備了可選的保形涂層;這薄，聚合物層有助于保護單位免受灰塵，高溫，和更多。因此，保形涂層延長了電機的使用壽命，特別是在危險的操作環(huán)境中。

469- p1 – hi – a20 – e – h的增強面板可以分為大約四個部分:這包括RS232端口，用于直接連接到運行EnerVista 469的筆記本電腦，重新設(shè)計的鍵盤用于設(shè)定點輸入和編輯，擴展40個字符的液晶顯示器，以及表示系統(tǒng)內(nèi)各種狀態(tài)的led。

469-P1-HI-A20-E-H的型號中的“P1”表示該繼電器與1a相CT次級兼容。與“P5”型號表示的5個A相CT次電流相比，用戶應(yīng)確保標(biāo)稱相電流額定值與所有連接的CT的連接和次電流額定值相對應(yīng)。隨著時間的推移，不匹配的ct可能會對系統(tǒng)造成損害，并且毫無疑問會導(dǎo)致保護減弱，即使這種損害不會立即變得明顯。

該繼電器還能夠自我評估，評估電機健康，并提供可配置的警報，提醒用戶當(dāng)轉(zhuǎn)子問題出現(xiàn)。這種早期檢測系統(tǒng)減少了故障排除時間，減少了停機時間。與電機健康相關(guān)的指標(biāo)也可以在通用電氣Multilin的EnerVista 469程序中進行檢查，這比使用鍵盤手動導(dǎo)航繼電器菜單更有效。

469-P1-HI-A20-E

This enhanced model of GE Multilin’s 469 series is able to protect and control motor systems of medium to large size. The 469-P1-HI-A20-E-H is also unique from most models in that it comes with the optional conformal coating; this thin, polymeric layer helps protect the unit from dust, high temperatures, and more. The conformal coating therefore extends motor life, especially in hazardous operating environments.

The 469-P1-HI-A20-E-H’s enhanced faceplate can be divided into approximately four sections: this includes the RS232 port for direct connection to a laptop running EnerVista 469, the redesigned keypad for setpoint entry and editing, an expand 40-character liquid-crystal display, and the LEDs which signify various statuses within the system.

The “P1” in the model number of the 469-P1-HI-A20-E-H indicates that the relay is compatible with 1 A phase CT secondaries. Contrasting with the 5 A phase CT secondaries denoted by “P5” model numbers, users should ensure that the nominal phase current rating corresponds with the connections and secondary ratings of all connected CTs. Mismatched CTs can cause damage to the system over time, and will indubitably result in weakened protection even if this damage does not immediately become evident.

This relay is also capable of self-assessment, evaluating motor health, and offering configurable alarms to alert users when rotor problems arise. This early detection system results in reduced troubleshooting times in addition to reduced downtime. Metrics related to motor health can also be reviewed in General Electric Multilin’s EnerVista 469 program, which is more efficient than manually navigating through the relay’s menus using the keypad.

469-P1-HI-A20-E