Basler Electric BE1-47N - Manual (Page 16)

2-2 BE1-47N Controls and Indicators 9170400990 Rev J
Locator Description
C Undervoltage Controls and Indicator. These elements consist of a pickup thumbwheel
switch, a time delay thumbwheel switch, and a pickup indicator. Undervoltage elements
are present only if option 1 of the relay style number is 1, 2, or 3.
The 16-position pickup switch adjusts the undervoltage pickup setpoint. Switch positions
A through S correspond to setpoints ranging from 2 to 32% below the nominal (single-
phase) voltage, in 2% increments. The front panel setting chart (locator D) lists the
setpoint for each switch position.
Relays with definite or inverse timing have a time delay switch that sets the duration of
timing for undervoltage protection. Instantaneous timing is not user-adjustable, so relays
with instantaneous timing do not have an undervoltage time delay switch.
The red pickup LED lights when the level of (single-phase) voltage decreases below the
setting of the undervoltage pickup switch.
D Setting Chart. To aid in setting pickup levels, this chart lists the percent difference (from
nominal) setting for each lettered position of the negative sequence voltage, overvoltage,
and undervoltage pickup setting switches.
E Target Reset Switch. This switch is operated to reset the target indicators.
F Output Test Pushbuttons. These pushbuttons allow manual actuation of the output relays.
Output relay actuation is achieved by inserting a nonconductive rod through the front
panel access holes.
G Target Indicators. The electronically latched red target indicators illuminate when the
corresponding output relay energizes. To ensure proper operation of current-operated
targets, the current flowing through the trip circuit must be 200 mA or higher. Target
indicators are reset by operating the target reset switch (locator E).
H Overvoltage Controls and Indicator. These elements consist of a pickup thumbwheel
switch, a time delay thumbwheel switch, and a pickup indicator. Overvoltage elements
are present only if option 2 of the relay style number is R, S, or T.
The 16-position pickup switch adjusts the overvoltage pickup setpoint. Switch positions A
through S correspond to setpoints ranging from 2 to 32% above the nominal (single-
phase) voltage, in 2% increments. The front panel setting chart (locator D) lists the
setpoint for each switch position.
Relays with definite or inverse timing have a time delay switch that sets the duration of
timing for overvoltage protection. Instantaneous timing is not user-adjustable, so relays
with instantaneous timing do not have an overvoltage time delay switch.
The red pickup LED lights when the level of (single-phase) voltage increases above the
setting of the overvoltage pickup switch.