Data Acquisition
7.3.2Voltage Minimum/Maximum Log
The Voltage Minimum/Maximum Log function allows the dis- play of minimum and maximum values measured by the relay. The collected information is compared against previ- ously stored values and the log is updated. All logged values are time stamped and resetting the log (see Section 6.7) will reset all log values. No voltages are metered unless the VT option is installed.
4700 | Voltage Minimum/Maximum Log | |
Address | Data | Description |
4701 | V12 min | Minimum phase voltage |
|
| between phases A and B |
4702 | V12 max | Maximum phase voltage |
|
| between phases A and B |
4703 | V23 min | Minimum phase voltage |
|
| between phases B and C |
4704 | V23 max | Maximum phase voltage |
|
| between phases B and C |
4705 | V31 min | Minimum phase voltage |
|
| between phases C and A |
4706 | V31 max | Maximum phase voltage |
|
| between phases C and A |
4713 | VAv min | Minimum average voltage |
4714 | VAv max | Maximum average voltage |
4717 | MinTHD | Minimum value of estimated |
|
| total harmonic distortion |
4718 | MaxTHD | Maximum value of estimated |
|
| total harmonic distortion |
|
|
|
The MinTHD and MaxTHD parameters (4717 and 4718) dis- play the minimum or maximum total harmonic distortion cal- culation for the average current. The calculation is an estimate of the harmonics on the system rather than an exact measurement.
4800 | Power Minimum/Maximum Log | |
Address | Data | Description |
4801 | kW min | Minimum power value |
4802 | kW max | Maximum power value |
4803 | kW dem min | Minimum active power demand |
|
| value |
4804 | kW dem max | Maximum active power demand |
|
| value |
4805 | kVA min | Minimum |
4806 | kVA max | Maximum |
4807 | kVAR min | Minimum |
|
| reactive value |
4808 | kVAR max | Maximum |
|
| reactive value |
4809 | PF max | Maximum power factor value |
4810 | PF min | Minimum power factor value |
|
|
|
7.3.4Frequency Minimum/Maximum Log
The Frequency Minimum/Maximum Log function allows the display of minimum and maximum values measured by the relay. The collected information is compared against previ- ously stored values and the log is updated. All logged values are time stamped, and resetting the log (see Section 6.7) will reset all log values.
4900 | Frequency Metering | |
Address | Data | Description |
4901 | Fmin | Minimum frequency value |
4902 | Fmax | Maximum frequency value |
|
|
|
7
7.3.3Power Minimum/Maximum Log
The Power Minimum/Maximum Log function allows the dis- play of minimum and maximum values measured by the relay. The collected information is compared against previ- ously stored values and the log is updated. All logged values are time stamped, and resetting the log (see Section 6.6) will reset all log values. No voltages are metered unless the VT option is installed.
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