The power data logger is designed for power signal records. The power generator test items are integrated at the tester. With those test items users can make motor (Power generator) No-load test, Short circuit test, Motor excitation step response test, motor excitatory de-excitation test, motor load rejection test, and grid synchronous connection test, and also on
The software components can applied to make curve analysis, math calculation, RMS calculation, power analysis, three-phase sequence analysis, frequency spectrum analysis, harmonic analysis, curve correlation analysis, picture editing vector sequence analysis and so on. All the test data and curves can be converted to be WORD/EXCEL test report document. The entire curve in the scope of the tester can be converted to be JPG file and saved to PC for further report making.
There are 12 channels of analog signal input, 12 binary signal input, and three relay contact outputs in the tester. The maximum sample rate of the tester is 100Khz. It can finish almost all the data record tasks for normal power system tests. All the input channels are isolated from each others so that all the different circuits connected to the tester will not affect each other.
The strong software system in the tester includes data samples. Data compression, signal statistics, and analysis, curve picture-making tools, frequency spectrum tools, curve math tools, harmonic analysis tools, RMS calculation, Power calculation, three-phase signal analysis tool, and vector analysis tools. The major characteristics and advantages can be described as follows:
1 The recorded signal is displayed in curve by scope in the tester in real-time. Multi-curve analysis is included in the tester. Users can zoom in/out and data location from the sampled curves.
2 The recorded curves can be edited, added text tags, changed the color, and so on. So that users can make reports in their prefered curves and display mode.
3 The Fourier transformer tools can get the amplitude and phase spectrum of the recorded curves.
4 All the curves can be selected as x coordinate and y coordinate to make the correlation curve of those two curves.
5 The harmonic tools can get the maximum 1024 times harmonic for the recorded curve.
6 The math tools can make add, decrease, multiply, divide and integrations for any curves in the scope.
7 Users can make RMS, Power watt calculations for any recorded curves in the scope.
8 The recorded three-phase voltage and current signals can be applied to calculate the sequence, active power, reactive power, apparent power, power factor and so on.
9 Draw a vector group picture for all the AC signals recorded.
10 The signal curve display mode can be set by software. Both the instantaneous curve or RMS curve can be showed by the tester.
11 The motor no-load test, short circuit test, excitation system step response test, de-excitation time constant measurement, frequency-voltage characteristic curve measurement. Load rejection test, and grid synchronous connection test template are integrated in the tester. The test results for those templates will be automatic if the template is used for records.
12 All the data and results can be converted to be word and excel test report.
13 The curve can be marked using a text automatic. That makes the report making more simple
14 All the channels' name and unit can be redefined by users.
15 All the test configurations and test settings will be saved automatically.
16 The sensors setup window can make the tester show the real value such as high voltage, high current, pressure, and so on directly after user configures the sensors factors
17 All the data and reports can be saved to U-disk. So that users can review and make reports from PC.
18 The protection unit of the tester system disk can recover the software and system every time when it reboots. But all the test data will be saved.
1.2.2 Technique index
The technique index of the tester is as follows
1 There are 12 channels voltage/current sample. The analog range include -10V~10V, -200V~200V, -400V~400V and -20mA~20mA. Users can switch the input range from the software. Also there is one channel -100mV~100mV which allow the input signal less than 10V.
2 The voltage and current input range assured errors are as follows:
-400V~ 400V assured error less than 0.5V
-200V~ 200V assured error less than 0.2V
-10V~ 10V assured error less than 0.01V
-20mA~ 20mA assured error less than 0.02mA
-100mV~ 100mV assured error less than 0.2mV
3 There are 12 channel wet contacts binary signal input. The valid and allowed input voltage is DC12-200V.
4 There are 3 channel relay contacts output. The maximum capacity for the contacts is AC220V/1A.
5 There are 2 USB ports used for data export and mouse/keyboard input
6 The LCD is 12.1 inches touchpad input mode. Make the human interface more simple.
7 The saved space in the tester is 32G for standard configuration
8 Input resistances for different channels are as follows:
-10V~10V Range Input resistance is 820K
-200V~200V Range Input resistance is 820K
-400V~400V Range Input resistance is 820K
-20mA~20mA Range Input resistance is 820K
-100mV~100mV Range Input resistance is 10M
9 Power supply AC 220V 10% 45Hz-65Hz