Basler Electric BE1-25 - Manual (Page 61)

(h) Again rotate the DL/NOT overvoltage and DB/NOT overvoltage controls CW until the LEDs
just light. Both adjustments should be near their maximum (fully CW) limits.
NORMAL Mode Testing
Step 5. Test NORMAL Mode operation of the line and bus voltage monitor as follows. (Proceed to step 6
if the NORMAL Mode is not used.)
(a) Adjust the following front panel controls by applying the voltages listed below, adjusting each
control to the threshold where its LED just lights. (Reference callouts L, N, F, and G of Figure
2-1.)
LB: Adjust to 80 Vac.
DB/NOT OV: Adjust to 30 Vac.
LL: Adjust to 80 Vac.
DL/NOT OV: Adjust to 30 Vac.
(b) If the relay is not equipped with a separate relay for Voltage Monitor (output options G and
H), set TIME DELAY to 99 seconds. This allows the convenience of using in-phase voltages
for testing non-synchronous functions (without unwanted SYNC contact closures).
(c) Apply simulated line and bus voltages, adjusted to check the bus and line voltage criteria
given in Table 5-1. To be valid, an output must occur immediately after line and bus voltages
are applied.
Table 5-1. NORMAL Mode Testing
No output∗ throughout voltage range.
Condition Switch
1 Up
2 Up
3 Up
4 Up
5 Up
Mode Switch
1 Up
2 Up
Output* only when bus input voltage is greater than 80 volts and line is less than 30 volts.
Condition Switch
1 Up
2 Up
3 Down
4 Up
5 Up
Mode Switch
1 Up
2 Up
Output∗ only when bus input voltage is less than 30 volts and line is greater than 80 volts.
NOTE
In some units, both the internal Condition Switches and the external condition
sensing inputs are present and in parallel. Take care that only one input method
is utilized when testing the relay, and (most importantly) after the relay is
installed.
9170200990 Rev U BE1-25 Testing 5-5