Power Quality Logger

Methods of Logging

Evaluating the Logged Data

You’ll use PQ Log to evaluate the logged data. Data can be read out during logging as well as at the end.

1.Connect the Logger to line power.

2.Connect the RS232 interface cable to your PC’s serial port, then to the Logger.

3.Start the PQ Log software.

4.Use PQ Log to transfer the data from the Logger to the PC.

5.Once the data is transferred, remove the RS232 interface cable and operating power from the Logger.

6.Evaluate the data using PQ Log.

For details, refer to the PQ Log manual.

Methods of Logging

The following section describes methods of logging using the 1744/1743 Logger.

Measuring Ranges

The Logger has three input ranges for each of its two connection systems: Wye connection (3-phase, 4-wire) and Delta connection (3-phase, 3-wire).

Table 6. Measuring Ranges

Connection

 

Nominal Voltages (Wye/Delta) Max. Input Voltage

 

 

 

 

 

 

 

 

 

 

Wye/Delta

69

V / 120 V

115

V / 200 V

230

V / 400 V

480

V / 830 V

 

 

 

 

 

 

 

 

 

Phase/Neutral

69

V ~, +20%

115

V ~, +20%

230

V ~, +20%

480

V ~, +20%

3-phase 4 wire

 

 

 

 

 

 

 

 

 

 

 

 

 

Phase/Phase

120 V ~, +20%

200 V ~, +20%

400 V ~, +20%

830 V ~, +20%

3-phase 3 wire

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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