VIGED310023EN-06

Monitoring of the transformer load

The transformer load consumption is measured continuously by an external current transformer and is displayed as a load percentage.

This consumed current is compared with an alarm threshold and, in case of overconsumption, the transformer alarm is generated on the HMI of the IM15H or IM20-H, on the HRP, Transformer Overload message is displayed on the Local Remote Display, sent via the Modbus communication (IM20-H) and the transformer alarm relay is activated.

The following parameters must be configured on the HMI of the IM15H or IM20-H or via Modbus communication (IM20-H):

Parameter Allowed values Default value
Primary CT 40....9999 A 50 A
Secondary CT
  • 1 A

  • 5 A

5 A
Transformer nominal current 12...9999 A 36 A
Transformer overload threshold 1...100% (% of the nominal current) 80 %

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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