ZHEJIANG HUAYANG ELECTRIC CO., LTD.
ELR Digital Earth Leakage Relay

ELR Digital Earth Leakage Relay

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If the Earth Leakage current exceeds the current 30mA may result into death. Therefore, it is essential to protect ourselves from such electrical shocks, here, the role of ELR Digital Earth Leakage Relay come into light as it helps in setting the threshold level to the range from 30mA to 30 Ampere during the occurrence of leakage current.

Features

  • MCU Based Compact Design
  • Ground (Earth) Fault Protection for
  • Motor and Power Distribution Systems
  • Zero Phase Current Detection Method
  • Test Button Provides a Manual Self-testing Function
  • Independently Adjustable Ground (Earth) Current and
  • Trip (Operating) Delay Time
  • Built-in Power Indication LED and Trip Indication LED

Technical specification

Earth current range

ELR

0.03-3A

EFR-2.5

0.1-1.5A

Time

Operation time

0.2-2 Sec

Operation characteristics indicator

Definite

LED

Control voltage

Voltage range

AC 220V

AC 110V

Frequency

50/60 Hz

Contact

1-SPDT (1NC/ NO)

5A/ 250VAC, 5A/30VDC, Resistive

Output

R

(When powered, 5-6 close, 5-8 close)

Insulation

Between case & circuit

(Over 10 M with 500VDC Megger)

Dielectric strength

Between case & circuit

(2.0KV, 50/60Hz, 1min)

Between contacts

(1.0KV, 50/60Hz, 1min)

Between circuit

(2.0KV, 50/60Hz, 1min)

Environment

Temperature

Storage

-30-80ºC

Operation

-20-60ºC

Humidity

(30-85% RH, Non-condensate)

Flush mounting

Mounting

313g

Weight



Model

ELR

Detection by external ZCT

EFR

Detection by residual current

Current range

30

0.03-3A, for EFR

25

0.1-2.5A, for EFR

Relay output

R

(when powered, 5-8 open 5-6 close)

Control voltage

F7

AC 110V, 50/60 Hz

M7

AC 220V, 50/60 Hz