Basler Electric BE1-11m - Manual (Page 347)

9424200996 Rev L 335
Instantaneous Undercurrent (37) Test
Functional testing is a way to assess this protection system’s suitability for your application. Functional
testing goes beyond the more basic tests found in acceptance testing, but lacks the detailed function
testing that is part of the commissioning process.
Test each of the following functions to verify that this BE1-11m measures accurately, is within specified
tolerances, and operates correctly. These tests are also suitable for assisting in systematic
troubleshooting in the event that an operation is questioned. Revisiting the test of a specific function can
help verify whether the BE1-11m is operating within specified tolerances. For further assistance, contact
Basler Electric, Technical Sales Support.
Refer to the Terminals and Connectors chapter for terminal locations and connections.
Reset targets prior to each test by navigating to the Metering > Status > Targets screen and pressing the
front-panel Reset key. Enter the appropriate username and password if prompted. Clear all logic prior to
each test by using the Settings Explorer in BESTCOMSPlus
® to open the BESTlogic™Plus Programmable
Logic screen and click the Clear button located on the toolbar. After new BESTlogicPlus settings are
made, click the Save button located on the toolbar to compile BESTlogicPlus. Upload BESTlogicPlus
settings by selecting Upload Logic to Device from the Communication pull-down menu. Operational
settings can be sent by selecting Upload Settings to Device from the Communication pull-down menu or
by clicking the Send Settings button on the toolbar.
The actual operating time of an output contact is equal to the recognition time plus the time delay setting
(accuracy) plus 6 milliseconds. Output contact operating time depends upon the type of test set used and
its operating characteristics.
A Functional Test Report is included at the end of this chapter. It should be used to record results and
verify pickup and timing accuracy.
Refer to the Instantaneous Undercurrent (37) Protection chapter for more information on this function.
Functional Test Procedure
Pickup Verification
Step 1: Use BESTCOMSPlus to send the operational settings in Table 128 to the BE1-11m. Reset
targets.
Table 128. Operational Settings
Setting Value BESTCOMSPlus Screen Description
Phase CT
Ratio 1 System Parameters, Sensing
Transformers Sets phase CT ratio to 1
Element
Mode 3 Phase Protection, Current,
Instantaneous Undercurrent
(37) Enables 37 function for 3 Phase mode
Source CT
Circuit 1 Protection, Current,
Instantaneous Undercurrent
(37) Selects CT circuit 1 as the source (for
protection systems equipped with 2 sets of
CTs)
37-1 Enabled Target Configuration, Targets Enables target for 37
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus Programmable Logic shown in Figure
252.
•
Blocking is disabled.
•
OUT1 closes for 37 Trip.
•
OUT2 closes for 37 Pickup.
•
Fault recording is enabled.
BE1-11m Instantaneous Undercurrent (37) Test