469- p5 – hi – a20 – e是通用電氣Multilin 469系列中的電機(jī)保護(hù)繼電器，能夠監(jiān)測，控制和保護(hù)中型和大型電機(jī)。

469系列的所有單元(與369系列不同)都配備了計量功能，允許用戶跟蹤系統(tǒng)變量，如電壓，需求和頻率。這些數(shù)據(jù)可以顯示在增強(qiáng)型40字符LCD上，也可以在EnerVista 469軟件程序中查看。RS232端口和RS485端口都可以在繼電器和運(yùn)行EnerVista軟件程序的計算機(jī)之間建立連接。

電機(jī)保護(hù)功能包括轉(zhuǎn)矩保護(hù)，過溫保護(hù)，定子差動保護(hù)，欠壓和過壓保護(hù)。當(dāng)繼電器檢測到繼電器內(nèi)的負(fù)狀態(tài)時，繼電器能夠進(jìn)行干預(yù)，快速評估嚴(yán)重程度并跳閘系統(tǒng)，或在必要時采用另一種解決方案(快速電機(jī)重啟等)。這些方法有助于減少電機(jī)系統(tǒng)的整體停機(jī)時間，并延長電機(jī)壽命。

數(shù)據(jù)記錄功能允許用戶選擇要測量的參數(shù)和應(yīng)該測量的間隔。這些參數(shù)可以以一秒到一小時的間隔進(jìn)行趨勢和繪圖。其中一些參數(shù)包括電機(jī)負(fù)載，功率因數(shù)，扭矩，最熱RTD和峰值視在功率。數(shù)據(jù)記錄允許更大的用戶洞察力，增加整個電機(jī)系統(tǒng)的知識。從長遠(yuǎn)來看，這減少了故障排除時間，并使用戶能夠更好地調(diào)整設(shè)定值配置。

469-P5-HI-A20-E

The 469-P5-HI-A20-E is a Motor Protection Relay within the General Electric Multilin 469 series and is capable of monitoring, controlling, and safeguarding medium and large motors.

All units in the 469 series (unlike in the 369 series) are equipped with metering functions, allowing users to track system variables such as voltage, demand, and frequency. This data can be displayed on the enhanced 40-character LCD or viewed in the EnerVista 469 software program. The RS232 port and RS485 ports can both establish connections between the relay and a computer running the EnerVista software program.

Motor protection features include torque protection, overtemperature protection, stator differential protection, and undervoltage & overvoltage protection. The relay is able to intervene when it detects negative states within the relay, quickly appraising the severity and tripping the system or employing another solution when necessary (rapid motor restarts, etc.) These methods help to reduce overall downtime of the motor system and promote longevity in regard to motor life.

The data logging feature allows the user to select parameters to measure and the interval at which it should be measured. These parameters can be trended and graphed at intervals ranging from one second to one hour. Some of these parameters include motor load, power factor, torque, hottest RTD, and peak apparent power. Data logging allows for greater user insight, increasing knowledge of the overall motor system. In the long-term, this decreases troubleshooting time and enables users to make better adjustments to the setpoint configuration.

469-P5-HI-A20-E