Basler-electric BE3-74VL User Manual download pdf

www.basler.com

+1 618.654.2341 (USA)

info@basler.com

Model

BE3-74VL, BE3-74VH,

and BE3-74VD

INTRODUCTION

BE3 dc voltage sensing relays provide voltage monitoring

and protection for any application where dc voltage levels

are critical. Undervoltage, overvoltage, and combined

under/overvoltage units are available. BE3 dc voltage

sensing relays operate when the externally adjustable trip

point is reached. On overvoltage units, the output relay

energizes when the input signal exceeds the trip point. On

undervoltage units, the output relay de-energizes when the

input signal falls below the trip point. A red LED indicates

the state of the relay. A green LED indicates the condition of

the power supply.

SPECIFICATIONS

Operating Power

All units require external operating power.

Nominal Voltage: 120 Vac, 240 Vac, 380 Vac,

480 Vac, or 24 Vdc

Frequency: 45 to 65 Hz

Burden

Vac: 2 VA

Vdc: <3 W

Sensing Input

Nominal Voltage: 1.0 Vdc, 10 Vdc, 100 Vdc, or 1 to

300 Vdc (specify nominal range)

Burden: 10 kΩ/V

Overload: 1.25 times nominal continuously

or 2 times nominal for 3 s

Setpoint

Undervoltage Range: Adjustable 0 to 80% (±3%) of

nominal

Overvoltage Range: Adjustable 40 to 120% (±3%) of

nominal

Repeatability: Greater than 0.5% of full span

Differential: Fixed at 5% of nominal

Operating Time: 200 ms typical

Output

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

Single Unit: 0.88 lb (0.4 kg)

Combined Unit: 1.32 lb (0.6 kg)

Size

Single Unit: 2.17” wide (55 mm)

Combined Unit: 3.93” 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

BE3-74VH and BE3-74VL dc voltage sensing relays have

one user-adjustable control marked SET. The BE3-74VD

has two controls: UNDER SET and OVER SET. The SET

control adjusts the relay trip point. An overvoltage trip

causes the relay output to energize when the voltage rises

above the SET threshold. The overvoltage SET level is

adjustable from 40 to 120% (±3%) of nominal input (V

nom

). An

undervoltage trip causes the relay output to de-energize

when the voltage decreases below the SET threshold. The

undervoltage SET level is adjustable from 0 to 80% (±3%) of

nominal input.

Setting Example

A BE3-74VH relay with a nominal input rating of 100 Vdc

has the following setting:

• SET - 80%

A trip occurs when the sensing voltage rises above 80 Vdc.

Reset occurs when the voltage falls below 75 Vdc (5% of

nominal below the setpoint).

INSTALLATION

BE3 dc voltage sensing 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

input connections for the BE3-74VL, BE3-74VH, and BE3-

74VD relays.

Publication

9321400990

Revision

Instructions

Date

04/14

2014

1 2

Instructions 1

Summary of Contents

Page 1 - Instructions

www.basler.com +1 618.654.2341 (USA) [email protected] Model BE3-74VL, BE3-74VH, and BE3-74VD INTRODUCTION BE3 dc voltage sensing relays

Page 2

CALIBRATION The calibration marks on the faceplate have a maximum error of 10% and are provided only as guides. Proper calibration requires using an

Related models: BE3-74VH | BE3-74VD |

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Basler-electric BE3-74VL User Manual

Browse online or download User Manual for Relay Basler-electric BE3-74VL. Basler Electric BE3-74VL User Manual

Summary of Contents

Related models: BE3-74VH | BE3-74VD |

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