Basler Electric BE1-87G - Manual (Page 59)

5. Slowly increase the operate current applied to terminals 6 and 8 until the relay trips. A relay with a
style number of x1x-xxx-xxxxx should trip at 0.1 Aac and a relay with a style number of x2x-xxx-xxxxx
should trip at 0.02 Aac. Tolerance is ±5% or 25 mA, whichever is greater.
6. Slowly decrease the operate current source until dropout occurs. Dropout should occur at a current
value that is greater than or equal to 90% of I
S
(the sensitivity switch setting value).
7. Repeat steps 2 through 6 for the other sensitivity switch settings. If desired, a sufficient number of trip
points may be taken to verify any or all of the performance curves shown in Figure 5-3.
For restraint current (I
R
) less than or equal to nominal (I
R
≤ 5 amperes for style number x1x-xxx-xxxxx
or I
R
≤ 1 ampere for style number x2x-xxx-xxxxx), the tolerance is ±0.05 • I
OP
or 25 mA, whichever is
greater.
For I
R
> nominal (up to a maximum of 20 amperes for style number x1x-xxx-xxxxx or 4 amperes for
style number x2x-xxx-xxxxx), the tolerance is ±0.08 • I
OP
on the characteristic curve or 150 mA,
whichever is greater.
See Figures 5-3 through 5-6 for the operating characteristic curves and trip response timing curve.
Figure 5-2. Operational Test Setup
B-Phase and C-Phase Trip and Dropout Test
Perform the following steps to test the trip and dropout accuracy of phases B and C of relays with three-
phase sensing (style number Gxx-xxx-xxxxx).
Perform steps 1 through 7 under Single-Phase/A-Phase Trip and Dropout Test for phases B and C.
NOTE
Depending upon the relay style number, the relay may be equipped with
normally-open or normally-closed trip contacts. Check continuity at terminals 1
and 10 with the relay tripped and not tripped to verify correct response for the
type of contacts specified.
9170800990 Rev N BE1-87G Testing and Setting 5-3