Data Logger - GE L90 Instruction Manual

PRODUCT SETUP
All eight CT/VT module channels are stored in the oscillography file. The CT/VT module channels are named as follows:
<slot_letter><terminal_number>—<I or V><phase A, B, or C, or 4th input>
The fourth current input in a bank is called IG, and the fourth voltage input in a bank is called VX. For example, F2-IB
designates the IB signal on terminal 2 of the CT/VT module in slot F.
If there are no CT/VT modules and analog input modules, no analog traces appear in the file; only the digital traces appear.

5.3.9 Data logger

SETTINGS  PRODUCT SETUP  DATA LOGGER
 DATA LOGGER

5
The data logger samples and records up to 16 analog parameters at a user-defined sampling rate. This recorded data can
be downloaded to EnerVista UR Setup and displayed with parameters on the vertical axis and time on the horizontal axis.
All data is stored in non-volatile memory, so the information is retained when power to the relay is lost.
For a fixed sampling rate, the data logger can be configured with a few channels over a long period or a larger number of
channels for a shorter period. The relay automatically partitions the available memory between the channels in use. The
following table outlines examples of storage capacities for a system frequency of 60 Hz.
Table 5-14: Data logger storage capacity example
Sampling rate
15 ms
1000 ms
60000 ms
3600000 ms
5-104
DATA LOGGER MODE:

Continuous
DATA LOGGER TRIGGER:

Off
DATA LOGGER RATE:

60000 msec
DATA LOGGER CHNL 1:

Off
DATA LOGGER CHNL 16:

Off
DATA LOGGER CONFIG:

0 CHNL x 0.0 DAYS
Channels Days
1 0.1
8 0.1
9 0.1
16 0.1
1 0.3
8 0.1
9 0.1
16 0.1
1 22.7
8 2.8
9 2.5
16 1.4
1 1362.1
8 170.2
9 151.3
Range: Continuous, Trigger
Range: FlexLogic operand
Range: 15 to 3600000 ms in steps of 1
Range: Off, any FlexAnalog/actual value parameter
See Appendix A for list

Range: Off, any FlexAnalog/actual value parameter
See Appendix A for list
Range: Not applicable - shows computed data only
Storage capacity
482 s
60 s
54 s
30 s
32729 s
4091 s
3637 s
2046 s
1963710 s
245460 s
218190 s
127230 s
117822600 s
14727600 s
13091400 s
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS