DESCRIPTION:
The relay monitors the generator current and voltage to
detect a reverse power condition, signified by an incorrect
magnitude and phase angle between the current and volt
age. When a power reversal exceeds a predetermined
pickup level, and still exists after a preselected time period,
an output relay is energized to open the generator circuit
breaker or actuate an alarm. The inverse time delay charac
teristic curves of Figure 1 are used to determine the pickup
point and time delay within the limits of the specified sensed
nominal voltage. The relay provides an adjustable control
with a pickup range of 0.10 to 1.67 amperes minimum at 180°
phase angle between voltage and current, and an inverse
time delay control with an adjustment range of .2 - 4 seconds
at two times the pickup value. Both screwdriver controls are
continuously variable over their full range and are front panel
mounted for easy access. Reset of the relay is automatic
following correction of the reverse power condition. The
relay is solid state throughout (except for the output relay)
and employs components selected for their reliability in order
to ensure long life and trouble-free performance.
SPECIFICATIONS:
•
INPUT:
Voltage (BE3-32-1):
1 phase, 50
Hz,
nominal 100-133/220-240 Vac ±10%
1 phase, 60/400
Hz,
nominal 120-139/208-240-277
Vac ±10%
Voltage (BE3-32-3):
3 phase, 50
Hz,
nominal 100-110-133/190-200-240/
380-400-415/500 V ac ± 1 0%
3 phase, 60/400
Hz,
nominal 120-139/208-240/416-
450-480/600 Vac ±10%
Voltage Burden:
1 OVA per phase
Current (Max. Continuous):
6 amperes
Current Burden:
0.10 ohm
Overload Current:
12 amperes for 38 seconds, 65
amperes for 1 second, over the frequency range of
45-440
Hz.
•
OUTPUT:
SPOT relay contacts
Voltage
BE3-32-1A
BE3-32-1D
BE3-32-3A
BE3-32-3D
j20 Vac
WA
---
28 Vdc
SA
WA, Resistive
j25 Vdc
---
j A, Resistive
•
REVERSE POWER MEASUREMENT:
Current
magnitude and phase angle with respect to sensing
input voltage
(I
cos
<\>
).
2
TIME
DELAY
CONTROL
SETTING
REFERENCE ONLY.
SIGNIFYING THAT
CHARACTERISTIC
IS
CONSTANT THROUGH·
OUT FLM..l RANGE OF
TIME DELAY
ADJUSTMENT
FIGURE
1.
INVERSE TIME DELAY CHARACTERISTIC CURVES
•
PICKUP ADJUST LIMITS:
0.10 to 1.67 amperes
minimum with a 180° phase angle between voltage
and current, and within the limits of the specified
sensed nominal voltage.
•
TIME DELAY ADJUST LIMITS:
Within limits of
inverse time delay characteristics shown in Figure 1.
•
SHOCK:
Withstand 15 Gs in each direction.
•
VIBRATION WITHSTAND CAPABILITY:
Frequency
Acceleration
5-26Hz
j_36G
26-52Hz
0.036 in. displacement
52-260Hz
5G
•
OPERATING TEMPERATURE:
-40°C to +50°C*
(-40°F to +122°F).
•
STORAGE TEMPERATURE:
-65°C to +85°C
(-85°F to +185°F).
•
DIMENSIONS:
BE3-32-1:
8.00" (203.19mm) x 4.25" (1 07.95mm) x
4.125" (104.77mm)
BE3-32-3:
8.00" (203.19mm) x 4.25" (107.95mm) x
4.750" (120.65mm)
•
FINISH:
Dark grey, lusterless, textured, baked enamel.
•
WEIGHT:
(BE3-32-1) 3.5 lbs. net, 4.5 lbs. shipping;
(BE3-32-3) 5.25 lbs. net, 6.25 lbs. shipping.
•
Maximum operating temperature
is 7o-c
(+158-F) without
UL
recognition.
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