Basler Electric BE1-25A - Manual (Page 25)

Used to monitor the output breaker closure signal during testing or calibration.
Locator K - GEN UV (Generator Undervoltage) LED
An LED that lights when the generator voltage is below an acceptable range of the synchronizer. Under
this circumstance, the synchronizer is not allowed to close the breaker. (The acceptable range is
defined by the GEN UV setting of register 5.)
Locator L - SLIP INH LED
An LED that lights when the slip frequency exceeds the paralleling tolerance established by the MAX
SLIP setting. The breaker close output is inhibited whenever this LED is ON.
Locator M - SYNC LED
This LED is in parallel with the coil of the sync output relay. This LED will light (turn ON) during the time
that the sync output is energized
– i.e. only once each time the sync conditions are met and the output
is energized.
ADDITIONAL MODULES
Controls and indicators of the additional plug-in modules for the BE1-25A relay are described in the
following paragraphs.
Voltage Acceptance Module A1
Option A1 introduces an additional enabling factor for the breaker
closing signal. This additional parameter,
∆V, represents the
difference in voltage on the two sides of the circuit breaker. I.e., if
∆V is greater than the setting established by the VOLTAGE
DIFFERENCE control (Figure 2-4), the closure command output of
the BE1-25A unit is inhibited.
Note that the magnitude of the VOLTAGE DIFFERENCE setting is
expressed as a percentage of the bus voltage: the voltage
difference (in %) = |
∆V| * 100/V
BUS
.
An LED indicator,
∆V HIGH, illuminates when the voltage
difference exceeds the setting and the synchronizer is inhibited.
As will be seen later, this option or option A2 is a prerequisite of,
and a controller of, any Voltage Matching option that may be
present.
Figure 2-4. Module A1
9146600990 Rev S BE1-25A Human-Machine Interface 2-5