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  •  Switches and relays improve reliability for industrial applications
    two 2018-06

    Switches and relays improve reliability for industrial applications

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    Switch and relay manufacturers are further enhancing their product reliability designs to meet more stringent industrial and military applications. Products designed for these applications often need to meet the most stringent environmental requirements, such as water, heat, solvent, dust, and other contaminants. In many cases, they also need to resist high-strength impact and vibration, and require a long mechanical life. In the past six months, several switch and relay manufacturers, including knitter switch, EAO, electroswitch, ITT cannon and NKK, have launched new products that can withstand harsh environments.

  •  What are the electrical life requirements of power directional relay?
    two 2018-06

    What are the electrical life requirements of power directional relay?

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    What are the electrical life requirements of power directional relay? The relay contact should be able to make and break the circuit with DC inductive load (time constant of 5ms) with voltage not greater than 250V and current not greater than 1a, with breaking power of 10W.

  •  DEH system relay fault caused eh low oil pressure unit trip event
    two 2018-06

    DEH system relay fault caused eh low oil pressure unit trip event

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    1. Event process on May 20, a certain unit 2eh oil pump was running, EH oil pressure was low, and 1eh oil pump was started by interlock. 11: At 28:58, the steam turbine tripped, the first output was low EH oil pressure, the boiler MFT, the generator transformer unit tripped, and the trip process curve is shown in Figure 1.

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