9146600990 Rev M
BE1-25A General Information
1-7
SPECIFICATIONS
General specifications for the BE1-25A system are provided in the following paragraphs. For specifications
that apply only to particular options, see the ensuing subsection entitled Specifications of Options.
Voltage Sensing Inputs
70-150 Vac, 50/60 Hz. Burden: Less than 6 VA for the generator
(Bus and Generator)
input; less than 2 VA for the bus input.
Contact Sensing Inputs
Requires a user-supplied contact with a minimum rating of 0.05 A
at 250 Vdc.
Power Supply
Power for the internal circuitry may be derived from 90-132 Vac
at 50/60 Hz (single phase), or 70-150 Vdc. Burden: Less than
20.0 VA.
Outputs
Output contacts are rated as follows.
Breaker Closing
Normally open. Make and carry 30 A at 250 Vdc for 1 second, 7
A continuously, and break 0.3 A at 250 Vdc. (L/R = 0.04).
Voltage, Frequency (Speed) Correction, and Lockout
Form C (SPDT). Make and break 5 A at 250 Vac (80% PF), 5 A
at 28 Vdc (resistive), and 0.5 A at 120 Vdc (resistive).
Tolerances
Advance Angle
The command for breaker closure occurs within ±3.0° of phase
coincidence of bus and generator. (Closure will not occur if the
calculated advance angle exceeds 40°.)
Lockout
Occurs when breaker reopens within 15 ±10% seconds after the
initiation of breaker closure.
Slip Frequency (F
S
)
±0.001 hertz.
Generator Undervoltage
±1.0 V.
Inhibit
Control Ranges
The following parameters are settable over the indicated ranges.
MAX SLIP
Adjustable from 0.01 to 0.500 in steps of 0.001.
BRKR TIME
The characteristic breaker time settings are adjustable from 0.02
to 0.8 seconds.
Generator Undervoltage
Adjustable from 40 to 110 Vac.
Inhibit
Generator Speed
Adjustable between 0 to 99.9 seconds in 0.1 second increments.
Correction Pulses
Shock
In standard tests, the relay withstood 15 G in each of three
mutually perpendicular axes without structural damage or
degradation of performance.
Vibration
In standard tests the relay withstood 2 G in each of three
mutually perpendicular axes swept over the range of 10 to
www
. ElectricalPartManuals
. com