Basler BE1-67N, Instruction Manual

Page: 22 / 75

2-2 BE1-67N Controls and Indicators 9190700990 Rev F
Table 2-1. Front Panel Controls and Indicators
Locator Description
A Directional, Instantaneous Overcurrent Control. Screwdriver adjustment of the directional,
instantaneous overcurrent element is made with this multi-turn potentiometer.
B Non-Directional, Instantaneous Overcurrent Control. Screwdriver adjustment of the non-
directional, instantaneous overcurrent element is made with this multi-turn potentiometer
C Minimum Zero-Sequence Overcurrent Control. Screwdriver adjustment of the zero-
sequence current (I
O
) level applied to the directional, instantaneous overcurrent element is
made with this multi-turn potentiometer.
D
Characteristic Angle Switch. This two-position switch sets the characteristic angle (0
°
or
60
°
) for the zero-sequence voltage polarizing unit. With the switch in the 60
°
position,
characteristic angle accuracy is
±
5
°
for V
O
inputs below 30 volts and
±
10
°
for V
O
inputs
greater than 30 volts.
E Power Indicator. This red LED lights when operating power is applied to relay terminals 3
and 4.
F Target Indicators. These electronically latching red indicators display the protective element
that caused a trip.
G Target Reset Switch. Operating this switch resets all of the latched target indicators.
H Push-to-Energize Output Switches. These switches enable testing of the relay output
contacts without having to apply current or voltage to the relay sensing inputs. One switch
is provided for each output contact. The recessed switches are operated by inserting a
nonconductive rod through the front panel switch holes.
I Timing Indicator. This red LED lights when the time overcurrent setpoint is exceeded and
the directional condition is met.
J Time Dial. These two thumbwheel switches set the time delay for the time-current
characteristic shape.
K Tap Selector. This ten-position rotary switch sets the pickup level for the time overcurrent
function. The setting for the time overcurrent function is the value defined by the tap
selector switch position. The pickup level for each tap selector switch position is listed in a
tap range chart on the front panel.
L Tap Calibration Control. Screwdriver adjustment of the time overcurrent pickup level is
made with this multi-turn potentiometer.
M Tap Range Plate. This plate is user-adjustable to indicate the setting range (either high or
low) that corresponds to the external current sensing connections at terminals 7 and 8
(high) or 7 and 9 (low).
The front panel tap range chart lists the values of current that correspond to the high- or
low-range current sensing connections and the Tap Selector switch position.
N Directional Timing Inhibit Indicator. This amber LED lights when operation of the directional
time overcurrent element is inhibited by the directional unit.
O Directional Instantaneous Inhibit Indicator. This amber LED lights when operation of the
directional instantaneous overcurrent element is inhibited by the directional unit.