Functional Test Report - Basler BE1-11g Instruction Manual

452
•
OUT2 closes for 81-1 Pickup.
•
Fault recording is enabled.
Step 3: To test the negative-sequence inhibit, connect a three-phase voltage source with 120 degrees
between phases. The negative-sequence quantity is based on phase to neutral nominal voltage
(69.3 or 120). The negative-sequence inhibit setting is a percent of nominal voltage. Assuming a
4-wire connection and a nominal voltage of 120 volts phase-to-neutral, 208 phase-to-phase, a
20% of nominal setting equates to a negative-sequence voltage of 24 volts.
Step 4: Set the rate of change (sweep or ramp) for 3 Hz/s (BE1-11g set to trip at 2 Hz/sec), initiate the
sweep, and note that OUT2 operates. While monitoring Metering of the BE1-11g, reduce the C-
phase voltage to 55 volts and note the negative-sequence voltage. Continue to reduce the C-
phase voltage in 1-volt increments repeating the sweep test after each reduction until OUT2
does not operate. Inhibit should occur at 24 volts negative-sequence. Record the result.
Step 5: Set the Negative Sequence Inhibit setting to 0%.
Step 6: To test the frequency limit inhibit function, connect a 120 Vac voltage source capable of
smoothly sweeping the frequency from 35 Hz to 75 Hz to terminals C13 (A-phase) and C16
(neutral). With a ROC setting of 2 Hz/sec, initiate a 3 Hz/sec sweep (frequency range set 60 Hz
to 57 Hz) and note that OUT2 operates.
Step 7: Set the Overfrequency Inhibit setting to 59.7 Hz and the Underfrequency Inhibit setting to 59.5
Hz. Repeat Step 6 and note that OUT2 does not operate. Pickup accuracy for over and
underfrequency limit is ±0.01 Hz.

Functional Test Report

Overfrequency Pickup Verification
Pickup Setting Range = 15 to 110 Hz
Pickup Accuracy = ±0.01 Hz
Dropout = 0.02 Hz ±0.01 Hz of the actual pickup value
Pickup
Step Low
Setting
6 65 Hz 64.99 Hz
7 67 Hz 66.99 Hz
7 69 Hz 68.99 Hz
* Dropout range is calculated from the pickup setting and may need adjusted based on actual pickup.
Frequency (81) Test
Figure 309. BESTlogicPlus Settings (ROC Inhibit)
Actual
High
Pickup
65.01 Hz
67.01 Hz
69.01 Hz
Actual
Low*
Dropout
64.97 Hz
66.97 Hz
68.97 Hz
9424200994 Rev U
High* Pass/Fail
64.99 Hz P / F
66.99 Hz P / F
68.99 Hz P / F
BE1-11g