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Earth Fault Relay

Earth Fault Relay
Earth Fault Relay
Product Code : 8S0A2917
Product Description
We offer EFR- 2.5 Earth Fault Relays for monitoring the flow of current via earth circuit within secondary current transformer that are connected into parallel for relaying a signal input. However, for the neutral case in the circuit, a neutral current transformer can also be connected in the parallel.

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 MΩ 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



Protective Item

Trip Time

Ground Fault

O-Time


Ground Fault (GF)

Type

Range

Current Setting

05

50 - 500mA

10

100 - 1000mA

20

200 - 2500mA

Trip Time Setting

O-Time

0.2 – 2.0 sec

Reset

Manual / Electrical (Push RESET Button or Interrupt Supply Power)

Power Supply

110 / 220VAC, 50/60Hz

Output Relay

Mode/Rating

1-SPDT(1C), 3A/250VAC Resistive

Status

Normally De-energized

Mounting

35mm DIN-Rail / Panel

We offer EFR- 2.5 Earth Fault Relays for monitoring the flow of current via earth circuit within secondary current transformer that are connected into parallel for relaying a signal input. However, for the neutral case in the circuit, a neutral current transformer can also be connected in the parallel.

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 MΩ 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



Protective Item

Trip Time

Ground Fault

O-Time


Ground Fault (GF)

Type

Range

Current Setting

05

50 - 500mA

10

100 - 1000mA

20

200 - 2500mA

Trip Time Setting

O-Time

0.2 – 2.0 sec

Reset

Manual / Electrical (Push RESET Button or Interrupt Supply Power)

Power Supply

110 / 220VAC, 50/60Hz

Output Relay

Mode/Rating

1-SPDT(1C), 3A/250VAC Resistive

Status

Normally De-energized

Mounting

35mm DIN-Rail / Panel

Contact Us

Fangdouyan Industrial Zone, Liusi, Yueqing, Wenzhou, Zhejiang, China