Basler Electric BE1-50/51B-231 - Manual (Page 23)

9252000895 Rev C BE1-50/51B-231 Controls and Indicators 2-3
Table 2-1. BE1-50/51B-231 Controls and Indicators (Refer to Figures 2-1 and 2-2)
Locator Control or Indicator Function
A INST MANUAL TRIP
Test Points
When shorted, the test points (jacks) provide a secure means to
manually trip the controlled breaker. Jacks accept a standard 0.08
inch diameter phone tip plug.
B INST PICKUP
Selectors
Two switches (TENS and UNITS) to select pickup current in
amperes. Changing switch selectors while the relay is in service
may cause tripping.
C Targets Red target indicators latch when the trip circuit current is greater
than 0.2 amperes. One target each for TIME and INST.
D TIME PICKUP
Selectors
Two switches (UNITS and TENTHS) to select pickup current in
amperes. Changing switch selectors while the relay is in service
may cause tripping.
E CURVE Selector Ten position selector switch to select one of nine inverse functions
or one fixed time function.
F TIME DIAL Selectors Two selector switches (UNITS and TENTHS) to select the desired
characteristic curve. A setting of 0.0 results in instantaneous
operation without any intentional delay. A setting of 9.9
corresponds to the typical time provided by an electromechanical
relay at its maximum dial setting.
G TIME MANUAL TRIP
Test Points
When shorted, the test points provide a secure means to manually
trip the controlled breaker. Jacks accept a standard 0.08 inch
diameter phone tip plug.
H ACTIVE/PICKUP LED This bicolor LED indicates the level of current sensed by the relay.
A green LED indicates that the relay is active but not picked up.
The LED changes to red when the sensed current exceeds the
time overcurrent pickup setting. The LED changes from red to
green when the sensed current decreases below 95% of the time
overcurrent pickup setting.
Note: A minimum of 0.5 A is required to light the LED. The LED
may not turn green (active) before turning red (picked up) at the
0.5 A pickup setting.
I Target RESET Button Linkage extends through back of front cover to reset both gravity
latched target indicators.
SW3 SW3-1 SW3-1 provides an additional instantaneous delay of 0.2 second
when closed (ON). Closing both SW3-1 and SW3-2 provides an
additional instantaneous delay of 0.3 second.
SW3-2 SW3-2 provides an additional instantaneous delay of 0.1 second
when closed (ON). Closing both SW3-2 and SW3-1 provides an
additional instantaneous delay of 0.3 second.
SW3-3 SW3-3 provides selection of GE IAC type curves or ABB type
curves. Closing switch SW3-3 (ON) selects GE IAC type curves
(refer to Table 1-3). Opening switch SW3-3 (OFF) selects ABB
type curves (refer to Table 1-2).
SW3-4 SW3-4 provides selection of either instantaneous or integrating
reset characteristics. Closing SW3-4 (ON) selects integrating reset
characteristics. Opening SW3-4 (OFF) selects instantaneous reset
characteristics.