Basler Electric BE1-25A - Manual (Page 68)

Step 1. Provide the test setup illustrated in Figure 5-1, and move the test module into the offset (i.e.,
test) position.
Step 2. Set bus voltage to 120 Vac, and generator voltage to 130 Vac. Adjust the A1 or A2 option as
follows.
Option A1:
Set VOLTAGE DIFFERENCE to minimum.
Option A2:
Set VOLTAGE DIFFERENCE to minimum, UPPER LIMIT to 135, and LOWER LIMIT to 100.
Step 3. Connect an oscilloscope or frequency counter to the front panel jacks of the V3 module. Note
that the pulse width generated by this module for differences of less than 20 volts is determined
by the following formula.
𝑃𝑢𝑙𝑠𝑒 𝑊𝑖𝑑𝑡ℎ = ∆𝑉(𝑃𝑈𝐿𝑆𝐸 𝑊𝐼𝐷𝑇𝐻 𝑐𝑜𝑛𝑡𝑟𝑜𝑙 𝑠𝑒𝑡𝑡𝑖𝑛𝑔)/20
where:
∆V = the absolute voltage difference between bus and generator.
Step 4. With reference to the waveform (Figure 5-1), adjust the PULSE WIDTH control for a pulse width
of two seconds. The LOWER LED will turn ON for the duration of the pulse width if the voltage
difference exceeds the VOLTAGE DIFFERENCE setting on the option A module.
Step 5. Note that increasing the voltage difference between generator and bus will cause the pulse
width to increase. Decreasing the voltage difference will cause the pulse width to decrease.
Step 6. Adjust the CORRECTION PULSE INTERVAL control to the desired interval. (The interval is not
affected by the voltage difference.)
Step 7. Set the generator voltage lower than the bus; the RAISE LED should be ON for the duration of
the pulse width if the voltage difference exceeds the VOLTAGE DIFFERENCE setting on the
option A module.
Dead Bus Module D1 Verification Test
Step 1. Provide the test setup illustrated in Figure 5-1, and move the test module into the offset (i.e.,
test) position.
Step 2. Turn ON the dead bus option by installing a jumper across the DEAD BUS terminals on the test
module.
Step 3. Complete the setup by providing the following adjustments.
• Set GENerator UnderVoltage (Setting 5) to 110 Vac;
• Set bus at 120 Vac, 60 hertz;
• Set generator at 120 Vac, 60.4 hertz;
• Set MAX SLIP to 0.2 hertz, and verify that the SLIP HIGH LED is ON.
Step 4. Reduce the bus voltage to a point below the VOLTS control setting (on the dead bus option).
The SYNC LED should turn ON within 1 second after the DEAD BUS LED turns ON.
Step 5. Set the generator voltage to 100 Vac. Disable the automatic lockout feature (by setting the
LOCKOUT ON/OFF setting to OFF). Actuate the LOCKOUT RESET switch. Turn OFF the bus
voltage: The DEAD BUS LED should not turn ON. (Note that when a generator undervoltage
condition is in force, the breaker closure output is inhibited.)
Step 6. Enable the automatic lockout feature (by setting the LOCKOUT ON/OFF setting to ON). Set the
generator to 120 Vac; actuate the LOCKOUT RESET switch; and turn ON the bus voltage (120
Vac). To get sync activity, turn bus voltage OFF, and wait 1 second. Immediately after the
SYNC LED turns ON, depress and immediately release the momentary pushbutton that
represents a 52b input
─ signifying the opening of the breaker. (Reference Figure 5-2.) Verify
that the LOCKOUT LED is ON. Actuate the LOCKOUT RESET switch.
Step 7. Repeat step 6, only this time wait 17 seconds after the SYNC LED turns ON before opening and
closing the simulated 52b input. This time, lockout should not occur.
5-12 BE1-25A Testing 9146600990 Rev S