English to Czech Tech/Engineering Electronics / Elect Eng relé

When you apply the SIMPRO-100 Relay on asynchronous motor, the Power Factor Element Arming Delay disarms the power factor elements for a settable time after the motor starts. This allows the motor to be brought to full speed and the field applied. After the Power Factor Element Arming Delay expires, the Power Factor Alarm and Power Factor Trip elements are enabled. If the measured power factor falls below the leading or lagging threshold for longer than the time delay setting, the relay can issue an alarm or trip signal. The power factor elements are disabled when the motor is stopped or starting. These elements can be used to detect synchronous motor out-of-step or loss-of-field conditions.