Basler Electric BE3-47 User Manual

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+1 618.654.2341 (USA)

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INTRODUCTION

BE3 phase sequence relays detect reverse phase
connections of lines, transformers, motors, and gener ators.
An incorrect phase sequence causes the BE3-47 to de­energize, preventing the starting of incorrectly connected
equipment.

SPECIFICATIONS

Inputs

All units are self powered.
Nominal Voltage: 120 Vac, 240 Vac, 380 Vac, or

480 Vac

Overload Withstand: 1.25 times nominal continuously.

2 times nominal for 3 s.
Frequency: 50, 60, or 400 Hz
Burden: <3 VA

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: 0.88 lb (0.4 kg)
Size: 2.17” wide (55 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

Model

BE3-47

OPERATION

The BE3-47 output relay energizes when the relay senses a
nominal three-phase input with the correct phase sequence.
The output relay de-energizes when an input with an
incorrect phase sequence is detected. Two LED indicators
are provided. The green 123 LED lights to indicate correct
phase sequence. The red 321 LED lights to indicate
incorrect phase sequence.

INSTALLATION

BE3 phase sequence 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 1 shows the
terminal connections for the BE3-47 relay.

CALIBRATION

The BE3-47 has no adjustments and no cali bration is
necessary. The following procedure may be used to verify
proper operation.

1. Apply a nominal, three-phase input with the correct

phase sequence. The output relay should energize and
the green 123 LED should light.

2. Apply a nominal, three-phase input with an incorrect

phase sequence. The output relay should de-energize
and the red 321 LED should light.

MAINTENANCE

BE3 relays are solid-state devices that require no
maintenance. In the event that your relay requires repair,
contact Basler Electric, Highland, IL, USA for return
authorization.

ORDERING INFORMATION

Figure 2 shows the BE3 phase sequence relay style chart.

Publication

9320200990

Revision

D

Instructions

Date

04/14

Copyright

2014

FIGURES

Figure 1. BE3-47 Phase Sequence Connections

Publication

9320200990

Revision

D

Figure 2. BE3-47 Style Number Identification Chart

Instructions

Date

04/14

Page

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