When setting up the analogue output for a power factor reading, the Reading Top value must be in one of the
Hence, if the Reading Top value is set to
In specifying the Output Top and Output Bottom values, there are two conventions – one for European areas of influence and one for North American areas. The two conventions are:
Europe | Output Top greater or more positive than Output Bottom. |
USA | Output Top less or more negative than Output Bottom. |
The examples below show cases where power is only imported and the load may be either capacitive or inductive. The Reading Top and Reading Bottom values of zero ensure that the whole range of possible (import) power factor readings is covered. The unit in the
In the above symmetrical arrangement, 0 mA corresponds to unity power factor. This is not the case with the following asymmetrical arrangement.
Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03 | 37 |