Basler Electric BE1-40Q - Manual (Page 43)

Characteristic Data
Step 1. Adjust the current source phase angle for each of the values indicated in Table 5-3. Record the
magnitude of current required to receive each pickup indication. To measure pickup for each
phase angle setting, slowly increase the current magnitude from zero or a value less than the
pickup value until the PICKUP LED illuminates and an output contact operation occurs.
Table 5-3. Current Magnitudes Required for Pickup
Current Source Phase
Angle Setting (Degrees)
Equivalent System Power
Factor Angle (Ө) In Degrees
Current Magnitude
Required for Pickup (Amps)
+20 –20
+30 –30
+40 –40
+50 –50
+60 –60
+70 –70
+80 –80
+90 –90
+100 –100
+110 –110
+120 –120
Step 2. With the above recorded data, calculate P (watts) and Q (vars), as follows, for each recorded
pickup value.
( )
θ
cos
3
L
LL
I
V
P
=
( )
θ
sin
3
L
LL
I
V
Q
=
Where:
V
LL
= voltage measured in the test setup of Figure 5-2
I
L
= current measured in the test setup of Figure 5-2
Ө
= the (–) angle setting of the current source
NOTE
With the test setup as specified, the current source phase angle setting simulates
a leading power factor angle, i.e., Ө < 0.
9171500990 Rev N BE1-40Q Setting and Testing 5-5