Basler Electric BE3-25 - Manual

www.basler.com
+1 618.654.2341 (USA)
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Model BE3-25
INTRODUCTION
BE3-25 sync-check relays are used to ensure that two ac
circuits are synchronized. In order to be synchronized, the
frequency, phase angle, and voltage of the two circuits must
be within preset limits. When this occurs, the BE3-25 output
relay energizes. The primary application of the BE3-25 is to
enable additional generators to be brought on-line without
machine damage or system disturbance. The BE3-25 can
also be used to supervise reclosing or in any instance where
the danger of paralleling two circuits out of synchronism
exists.
SPECIFICATIONS
Inputs
All units are self-powered. Nominal voltage - 120 Vac, 240
Vac, 380 Vac, 480 Vac. For other nominal voltages, contact
Basler Electric.
Frequency
50/60 Hz or 400 Hz
Burden
GEN terminals: Less than 4 VA
BUS terminals: Less than 2 VA
Overload
Voltage: 1.25 times nominal continuously.
2 times nominal for 3 seconds.
Setpoint
Range: Adjustable 10 to 30% ( ±3%) of
nominal, of generator voltage (6
to 20 electrical degrees)
Repeatability: Better than 0.5% of full span
Hysteresis: Fixed at 5% of nominal
Operating Time: 500 ms, typical
Outputs
Relay Type: D.P.D.T.
AC Rating: 250 V, 5 A, non-resistive,
1200 VA
DC Rating: 125 V, 1 A, resistive, 120 W
Mechanical Life: 5 million operations
Temperature
Operating Temperature: 0 °C (32°F) to 60°C (140°F)
Functional Temperature: –25°C (–13°F) to 70°C (158°F)
Storage Temperature:
–40°C (–40°F) to 70°C (158°F)
Temperature Coefficient: 0.03% per
°C (300 ppm/°C)
Humidity
Relative Humidity: 95% non-condensing
Physical
Mounting: DIN rail 1.38” by 0.29” (35 mm by
7.5 mm)
Case: Complies with IEC 529, DIN
40050, BS 5490
Case Material: Complies with UL 94VO
Weight: 1.32 lb (0.6 kg)
Size: 3.94” wide (100 mm)
Agency
cULus listed to UL 508 and CSA C22.2 No. 14
CE compliant
GOST-R certified per the relevant standards of Gosstandart
of Russia
OPERATION
BE3-25 sync-check relays have one external, user-
adjustable control marked SET. This control, adjustable over
a range of 10 to 30% (
±3%) of nominal, sets the acceptable
differential voltage at which synchronization will occur.
When the two inputs are within the acceptable range, the
output relay energizes and the RELAY LED lights. A
POWER LED indicates the condition of the power supply.
BE3-25 relays with a style number of 1XXN5 energize for a
synchronized condition or a live-generator, dead-bus
condition. This feature allows the generator to energize a
dead bus.
Setting Example
A BE3-25 relay with a nominal input rating of 120 Vac has a
SET control setting of 20%. If the bus voltage is fixed at 120
Vac, the generator voltage must be between 96 Vac and
144 Vac for the relay to energize.
STYLE CHART
Figure 1 shows the BE3-25 style chart.
INSTALLATION
BE3 sync-check relays are designed for mounting on
standard DIN rails that comply to DIN-EN 50022. Mounting
involves hooking the top edge of the cutout on the base of
the case over one edge of the DIN rail. The opposite side of
the cutout containing the release clip is then pushed over
the opposite side of the DIN rail. To remove or reposition the
relay, lever the release clip and move the relay as required.
BE3 relays should be installed in a dry, vibration-free
location where the ambient temperature does not exceed
the operating temperature range. Connections to the relay
should be made using wire that meets applicable codes and
is properly sized for the application. Figure 2 shows the
terminal connections for the BE3-25 relay.
CALIBRATION
The calibration marks on the faceplate have a maximum
error of 10% and are provided only as guides. Proper
calibration requires using an accurate meter to monitor the
voltage. Use the following procedure to calibrate your relay.
1. Adjust the SET control fully counterclockwise. Apply
nominal voltage to the BUS terminals.
2. Apply the minimum or maximum desired
synchronization voltage to the GEN terminals. This
Publication
9319100990
Revision
D
Instructions
Date
04/14
Copyright
2014