BE1-50/51B
INVERSE TIMING ACCURACY:
± 2%, ±1 cycle for multiples of pickup from 2 to 40.
Below multiples of 2, errors may increase directly
proportional to the value of ______.
(M
N
-1)
FIXED TIME ACCURACY:
±2% or 30 milliseconds, whichever is greater.
TIME RESET:
Instantaneous or decay, internally selectable.
INST PICKUP RANGE:
5 Amp Unit: 2.0 to 99 Amps in 1 Amp steps
1 Amp Unit: 0.2 to 19.8 Amps in 0.2 Amp steps
INST DROPOUT:
95% of pickup
INST PICKUP ACCURACY:
± 2% of setting
INST CHARACTERISTIC:
See Figure 3. Additional user selectable (by DIP
switches) definite delays of 0.1, 0.2 and 0.3 seconds
for -100 series; 0 and 0.1 for -200 series.
INST TRANSIENT RESPONSE:
Less than 10% overreach with system time
constants up to 40 milliseconds.
1
CURRENT SENSING INPUT:
5 Amp Unit
14.0 Amps
400 Amps
1 Amp Unit
2.8 Amps
80 Amps
Continuous
One Second
Current
Current
6
SPECIFICATIONS
TIME PICKUP RANGE:
5 Amp Unit: 0.5 to 15.9 Amps in 0.1 Amp steps
1 Amp Unit: 0.1 to 3.18 Amps in 0.02 Amp steps
TIME DROPOUT:
Not less than 95% of pickup value.
TIME PICKUP ACCURACY:
± 2% of setting
TIME DIAL RANGE:
0.0 to 9.9 in 0.1 steps
TIME CHARACTERISTICS:
Nine inverse time and 1 fixed time function can be
selected by a front panel switch. Characteristic
curves are defined by the time characteristic
equation. The fixed time characteristic provides
delays of 0.0 to 9.9 seconds corresponding to the
dial setting.
BURDEN:
Burden is non-linear and resistive.
5 Amp Unit: 4.8 Ohms @ 0.5A & 0.2 Ohms @ 5A
1 Amp Unit: 120 Ohms @ 0.1A & 5 Ohms @ 1A
TARGETS:
Magnetically latched, manually reset for TIME and
INST output functions.
Operate Current: 0.2 Amp minimum
Coil Resistance: 0.1 Ohm
Operate Time:
< 1 millisecond
OUTPUTS:
Resistive
:
120/240 Vac: Make and carry 30 Amp for 0.2 sec.,
carry 7 Amp for 2 min., 3 Amp continuously, and
break 5 Amp.
125/250 Vdc: Make and carry 30 Amp for 0.2 sec.,
carry 7 Amp for 2 min., 3 Amp continuously, and
break 0.3 Amp.
Inductive
:
120/240Vac, 125/250Vdc: Make and carry 30 Amp
for 0.2 sec., carry 7 Amp for 2 min., 3 Amp
continuously, and break 0.3 Amp. (L/R=0.04).
ISOLATION:
2000 Vac at 50/60 Hz for one minute (1500 Vac for
one minute across open contacts) in accordance
with IEC 255-5 and IEEE C37.90-1-1989
(Dielectric Test).
SURGE WITHSTAND CAPABILITY:
Qualified to IEEE C37.90.1-1989
FAST TRANSIENT:
Qualified to IEEE C37.90.1-1989
IMPULSE TEST:
Qualified to IEC 255-5
RADIO FREQUENCY INTERFERENCE (RFI):
Qualified to IEEE C37.90.2-1989. Field
tested using five watt transceiver operating at
random frequencies centered around 144 MHZ
and 440 MHZ.
TEMPERATURE:
Operating Range -40° C (-40° F) to 70° C (158° F).
Recommended Storage Range -50° C (-58° F) to
70° C (158° F).
SHOCK:
15g in each of three mutually perpendicular planes.
VIBRATION:
2g in each of three mutually perpendicular planes
swept over the range of 10 to 500 Hz for a total of
6 sweeps, 15 minutes per sweep.
