SR489-P5-HI-A20-E是GE Multilin為489系列制造的發(fā)電機(jī)管理繼電器。以下是該繼電器的一些關(guān)鍵特性：
應(yīng)用：在低電壓應(yīng)用中，如果需要輸出繼電器觸點(diǎn)，客戶有責(zé)任確保適當(dāng)?shù)慕^緣水平。
在繼電器通電的情況下，其觸點(diǎn)處于安全狀態(tài)。當(dāng)繼電器通電后，其內(nèi)部機(jī)構(gòu)會(huì)根據(jù)輸入信號(hào)做出相應(yīng)的動(dòng)作，進(jìn)而控制觸點(diǎn)的開閉狀態(tài)。在正常情況下，繼電器的觸點(diǎn)處于常閉狀態(tài)，即觸點(diǎn)是斷開的。當(dāng)輸入信號(hào)達(dá)到一定值時(shí)，繼電器內(nèi)部機(jī)構(gòu)會(huì)做出相應(yīng)動(dòng)作，使得觸點(diǎn)從常閉狀態(tài)變?yōu)槌ｉ_狀態(tài)，或者從常開狀態(tài)變?yōu)槌ｉ]狀態(tài)。這種控制方式可以實(shí)現(xiàn)對(duì)電路的精確控制，從而保證電路的安全和穩(wěn)定運(yùn)行。因此，繼電器的觸點(diǎn)只有在通電的情況下才能處于安全狀態(tài)。
SR489-P5-HI-A20-E is a generator management relay manufactured by GE Multilin for the 489 series. The following are some key characteristics of this relay:
Control power supply: The high control power supply is 90-300 V DC and 70265 V AC, with a frequency of 48-62 Hz.
Analog output: The analog output of the relay is 4 to 20 milliamperes.
Contact: When the relay is energized, its contact is in a safe state.
Display: This relay has basic or enhanced display functions that can display relevant information.
Fuses: The rated current of the fuse is 2.5A, the fuse type is 5x20mm HRC SLO-BLO Litteluse, and the fuse model is 215-02.5.
Application: In low voltage applications, if it is necessary to output relay contacts, the customer is responsible for ensuring the appropriate insulation level.
When the relay is energized, its contacts are in a safe state. After the relay is energized, its internal mechanism will make corresponding actions based on the input signal, thereby controlling the opening and closing status of the contacts. Under normal circumstances, the contacts of a relay are in a normally closed state, meaning that the contacts are open. When the input signal reaches a certain value, the internal mechanism of the relay will make corresponding actions, causing the contacts to change from normally closed to normally open, or from normally open to normally closed. This control method can achieve precise control of the circuit, thereby ensuring the safe and stable operation of the circuit. Therefore, the contacts of the relay can only be in a safe state when energized.
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