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9411 Line Protection Relay

9411 Line Protection Relay

9411 Line protection device is a device that integrates protection and measurement. Because the device has the characteristics of small size, ultrathin (8 cm) and so on, so it is especially suitable for the protection and measurement and control of ring main unit and box transformer substation. Needed high accuracy, high requirements of measurement and control device for relay protection, you could select and use my company's 9511 line protection devices and 9711 line protection devices.
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 Protection function:

        1.Current instantaneous trip protection (Tripping operation)
        2.Time delay current instantaneous trip protection (Tripping operation)
        3.Over current protection (Tripping operation)
        4.Inverse time over-current protection (general/ special/extreme; You could choose one of them or choose nothing) 
        5.Overload Protection(Alarm/ Tripping operation)
        6.Zero sequence current instantaneous trip protection (Tripping operation)
        7.Zero sequence time delay current instantaneous trip protection (Tripping operation)
        8.Zero Sequence definite time over-current protection. (Tripping operation)
        9.Zero-Sequence Inverse time Over current Protection (general/ special/extreme; you could choose one of them or choose nothing) 
        10.Zero-Sequence Over-Current Protection (Alarm/ Tripping operation)
        11.Over voltage protection (Tripping operation)
        12.Low voltage protection (Tripping operation)
        13.Under-frequency load shedding (Tripping operation)
        14.Three-phase Automatic reclosure (No test)
        15.PT line-break (Alarm)
        16.PT no-voltage protection
        17.Control loop break (Alarm)
 
Explanation: Within the conditions, the protection function can be increased to meet the needs of the field.
 
Measurement functions:
        Measuring current: Ia Ic 
        busbar voltage: Uab Ucb
        Frequency: f  
        Power: P Q
        Power factor: cosФ
 
Control functions:
      Opening and closing of Circuit breaker on the spot
Auxiliary function:
         Operation instruction: When the device is running normally, "operation" indicator light has a regular flashing
 
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209585994

209585994

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