SR489-P5-HI-A20-E是GE Multilin为489系列制造的发电机管理继电器。以下是该继电器的一些关键特性:
应用:在低电压应用中,如果需要输出继电器触点,客户有责任确保适当的绝缘水平。
在继电器通电的情况下,其触点处于安全状态。当继电器通电后,其内部机构会根据输入信号做出相应的动作,进而控制触点的开闭状态。在正常情况下,继电器的触点处于常闭状态,即触点是断开的。当输入信号达到一定值时,继电器内部机构会做出相应动作,使得触点从常闭状态变为常开状态,或者从常开状态变为常闭状态。这种控制方式可以实现对电路的精确控制,从而保证电路的安全和稳定运行。因此,继电器的触点只有在通电的情况下才能处于安全状态。
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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