Basler-electric BE3-74SH User Manual download pdf

www.basler.com

+1 618.654.2341 (USA)

info@basler.com

Model

BE3-74SH, BE3-74SL,

and BE3-74SD

INTRODUCTION

BE3 dc millivolt sensing relays provide voltage monitoring

and protection for any application where dc voltage levels

are critical. A common application is overcurrent protection

for dc charging systems. Millivolt input signals from shunts,

sensors, or transducers can provide the input signals.

Undervoltage, overvoltage, and combined over/undervoltage

units are available. A time delay control provides an

adjustment of 0 to 10 seconds (operating time is typically

200 ms). This time delay may be used to prevent false

tripping when there are slight variations in the input signal.

BE3 dc millivolt sensing relays operate when the 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

Impedance: 100 Ω max

Overload: 10 times nominal continuously

Burden

Vac: 2 VA

Vdc: <3 W

Sensing Input

Nominal Voltage: 50 mVdc, 100 mVdc, and 10 to

99 mVdc (specify nominal range)

Impedance: 50 kΩ

Setpoint

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

nominal

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

nominal

Time Delay: Adjustable 0 to 10 s

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

BE3-74SH and BE3-74SL dc millivolt sensing relays have

two user-adjustable controls marked SET and DELAY. The

BE3-74SD has four controls: UNDER SET, UNDER DELAY,

OVER SET, and OVER DELAY. 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.

The time delay is the amount of time that elapses after the

trip point is reached and when the output relay operates.

Setting Example

A BE3-74SH relay with a nominal input rating of 100 mVdc

has the following settings:

• SET - 80%

• DELAY - 4 s

A trip occurs when the sensing voltage rises above 80 mVdc

and 4 seconds elapse. Reset occurs when the voltage

decreases below 75 mVdc (5% of nominal below the

setpoint).

Publication

9320800990

Revision

Instructions

Date

03/14

2014

1 2

Instructions 1

Summary of Contents

Page 1 - Instructions

www.basler.com +1 618.654.2341 (USA) [email protected] Model BE3-74SH, BE3-74SL, and BE3-74SD INTRODUCTION BE3 dc millivolt sensing relays provide vol

Page 2

INSTALLATION BE3 dc millivolt sensing relays are designed for mounting on standard DIN rails that comply to DIN-EN 50022. Mounting involves hooking th

Related models: BE3-74SL | BE3-74SD |

Comments to this Manuals

No comments

Basler-electric BE3-74SH User Manual

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

Summary of Contents

Related models: BE3-74SL | BE3-74SD |

Comments to this Manuals

Related products and manuals for Relay Basler-electric BE3-74SH