Basler BE1-24, Instruction Manual

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M
Actual V/Hz Condition
V/Hz Pickup Setting
5-2 BE1-24 Testing
NOTE
It is not necessary to perform the tests in sequential order. Testing may be initiated at
any specific test. However, all tests use the same initial front panel switch positions.
OPERATIONAL TEST PROCEDURE
The following procedures verify proper operation and calibration of the relay. Throughout the procedure,
various values for M will be referenced.
If the results obtained from these procedures do not fall within specified tolerances, look for:
• Procedural inconsistencies. (Example: The start pulse to the timer does not always begin on the
zero crossing.)
• The inherent error of the test equipment used. The function generator must be extremely stable
in frequency and magnitude. A Doble F2500 with hand controller or Multi Amp Epoch 30 are
suggested. Also, the digital voltmeter must be stable and accurate at 10 Hz.
Pickup
Step 1. Connect the unit as shown in Figure 5-1.
Step 2. Adjust the front panel thumbwheel switches as follows:
• INST. PICKUP - 2.00 V/Hz
• TIME TRIP PICKUP - 2.00 V/Hz
• TIME DIAL - 0.1
• RESET - 0.1
• ALARM PICKUP - 2.00 V/Hz
• ALARM TIME DELAY - 0.0
Step 3. Adjust the input frequency to 60 Hz. Increase the input voltage to a point where the TIME TRIP
PICKUP LED just illuminates, and record the voltage. (Recorded voltage should be 120 Vac ±1.0
hertz.)
Step 4. Repeat step 3 for the alarm and instantaneous outputs.
Step 5. At this time, other V/Hz settings for pickup may be verified using the procedures in steps 3 through
5. Pickup accuracies are as follows.
Frequency Accuracy at 25
((
C
40-72 hertz ±1 hertz
20-40 hertz ±2 hertz
3-20 hertz ±8 hertz