1-10
BE1-25 General Information
Output Contacts
Output contacts are rated as follows:
Resistive
120/240 Vac
Make 30 A for 0.2 seconds, carry 7 A continuously, and break 7 A.
125/250 Vdc
Make and carry 30 A for 0.2 seconds, carry 7 A continuously, break
0.3 A.
Inductive
120/240 Vac, 125/250
Vdc
Break 0.3 A, (L/R = 0.04).
Target Indicator
Target indicators may be either internally operated or current
operated (operated by a minimum of 0.2 A through the output trip
circuit). When the target is current operated, the sync output circuit
must be limited to 30 A for 1 second, 7 A for 2 minutes, and 3 A
continuously.
Phase Angle
Selection Accuracy
± 0.5
°
or ± 5.0% of the front panel setting for degrees, whichever is
greater, for a nominal input frequency of 50/60 hertz, a sensing
input range of 80 to 135 volts, and at 25
°
C.
Setpoint Accuracy
±0.5
°
or ±5%, whichever is greater, from a reference measurement
at 25
°
C, at nominal input frequency and levels, over the specified
operating range of temperature and input voltages.
Timing Accuracy at 25
°
C
Maximum of 25 milliseconds or 5% of the front panel setting for
time whichever is greater, for a nominal input frequency of 50/60
hertz at 25
°
C.
TIME Delay Accuracy
(Overall)
±10 milliseconds or ±2%, whichever is greater, of the time delay at
25
°
C, over the full temperature, voltage and frequency ranges.
Minimum Voltage
Requirement
Minimum voltage detection circuitry enables the sync-check
circuitry when both line and bus are within operating range of the
relay. Voltage sensing circuits are guaranteed to operate at a
minimum voltage of 60 volts. They are guaranteed not to operate
at voltages less than 20 volts. Some units may operate at voltages
in between these two levels because of the individual
characteristics of specific components. Minimum voltage detection
is usually in the range of 45 to 55 volts.
Voltage Difference Option
Range
Continuously adjustable over the range of 1 to 135 Vac.
Accuracy
Voltage difference setpoint does not vary more than 0.5 V or 5%,
whichever is greater, from a reference measurement at 25
°
C, with
nominal input frequency, and variation of temperature or voltage
inputs over their specified operating range. This setpoint does not
vary more than 3% from a reading at 25
°
C over the limited range of
+15 to +40
°
C.
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