Contrel ELR-3A Series

To Next Page

code

Type (A)

Sensivity

(s)

Tripping delay

Communications

3ED21G

ELR-3A

0,03-0,1-0,3-0,5-1-3

by direct setting

5-10-30 by SETUP

INS-SEL-0,02-0,1-0,2-0,3-0,4-0,5-0,75-1

by direct setting

3-5-10 by SETUP

Not available

(see version

ELR-3As)

3 E D 3 0

Code

Power supply

230 V c.a.

110 V c.a.

ELR-3A Electronic Earth-leakage Protection Relay

For instance ELR-3A 110 V a.c...supplied by

3ED30E

RGU - 10 C

24/ 48 V c.a/a.c

24/120 V c.c/d.c

GENERAL DESCRIPTION

52,5

43,5

67,9

DIN 46277 (EN 50022)

Weight :168 gr

Fixed by rail

Rated current: 6 Ac.a

Rated voltage : 230 Vc.a

1-2 External Input Trip/ Reclose Optocoupled

3 Not used

4 Pre-alarm output relay common

5 Pre-alarm output relay, NC

6 Pre-alarm output relay, NA

7 Not used

8 Input Current sensor 1S2

9 Input Current sensor 1S1

10 Supply 230 Va.c (Phase or Neutral)

11 Supply 230 Va.c (Neutral or Phase)

12 Not used

13 Tripping output relay NO

14 Tripping output relay NC

15 Tripping output relay COMMON

Rated current: 6Ac.a.

Rated voltage: 230 Va.c

TERMINAL DESCRIPTION FEATURES

- Device with 2 independent, programmable relays, one main relay one prealarm.

- It has 2 outputs. Main trip relay and prealarm signal relay.

- It has 1 potential free input for external ON/OFF.

- Mounting in DIN rail 46277 (EN 50022) or PANEL 72x72 by means accesories (3EDA03)

- Associated to a CT-1/... Series external, toroidal current transformer.

- It verifies connection with external transformer CT-1/... by inductive tests.

- Leakage detection and measurement is via calculating its true effective value (TRMS).

- Displays setting values and instant current different to its associated units

PRELIMINARY CONSIDERATIONS

CHECKS ON RECEPTION

On receving the instrument, check the following points:

- The unit’s specifications are the same as those on your order.

- Check that the device has not suffered any damage during transport.

You can download more information from CONTREL website, www.contrel.it

SAFETY PRECAUTIONS

The staff using or handling the unit must follow the common safety measures and

warnings included in the instruction manual.

The ELR-3A unit has been specifically designed for its installation in a electric board,

enclosure to a DIN rail or mounted in panel by means of accessories. It has a flashing

green led (ON) when it is operation and, therefore, it shows that there is voltage and

current in the electronic circuit. The user must make sure that the equipment is not

connected to the power supply at all the times, even when the LED is not flashing.

Likewise, the power supply circuit must have a built-in circuit breaker or equivalent

device to disconnect the unit from the power.supply network.

INSTALLATION AND START-UP

The user must take into account and observe the informations and warnings included in

this instruction manual to guarantee the correct operation of the equipment and comply

whit the safety specifications. The equipment must not turned on until is fully installed in

the electrical panel.

¡IMPORTANTE!

IMPORTANT!

The unit´s protections systems might not be effective if the unit is used for

purpose other than those specifications by the manufacturer.

Disconnect the equipment from the power supply when the unit´ssafety protection

systems are not working or there are signs of a problem (in case of visible damage). In this

case, contact a qualified technical service or with our own technical service .

DIN rail installation. Through the CBT must pass all live conductors supplyng electrical

energy to loads or part of the installation which requires it to earth leakage protection with

this device. In single-phase installation (phase and neutral, L and N), three phase - 3

wires (three phases, L1, L2 and L3) or three phases - 4 wires (L1, L2, L3 and N). All

connections should be inside the electrical board. Please note that with the connected

equipment, terminals and opening covers or removing elements, can give access to

dangerous parts to touch. The equipment must not be used until it has completely

finished installation. The unit must be connected to a power supply circuit protected by

fuses in line with the range and power consumption. In turn, the supply circuit must be

provided with a circuit breaker or equivalent device to disconnect the equipment from the

mains. During the wiring cable is advisable a section permitted between 1 - 1.5 mm . A

recommended torque of 0.5-0.6 N.m. Cable Stripping Tools length 7 mm.

contrel

ELR-3A

TECHNICAL FEATURES

- Tipo Relay type: Electronic class A. High frequency current filtering.

- Reclosing type: Manual via RESET button or by cutting power supply.

- Rated power supply voltage: 230 (± 20%) 50/60 Hz, 6 VA

110 (± 20%) 50/60Hz, 6 VA

24-48 V a.c. / 24-120 V d.c., 6 VA, ± 20%, 4 W

- Operating temperature: 10...+50ºC

- Relative humidity: 5%...95% RH (Non-condensing)

- Maximum operating altitude: 2000m

- IP Protection:

Assembled equipment (front): IP 41

Non assembled equipment (sides and rear cove): IP 20

- Connections:

Permissible cable section: 0,127-2,8082 mm

Recommended tightening torque 0.5-0.6 Nm

Length of cable to strip: 7mm

Recommended screwdrivers: Bar 0.4 x 2.5 x 80 mm, length 160mm

Switch Output contact features: 13-14-15 and 4-5-6

Rated current/Maximum instant current: 6/10 A a.c.

Rated voltage/Maximum switching voltage: 230/275 V a.c.

Rated load in AC1: 2500 V·A

Contacts protected by varistor (max. Operating voltage): 275 Va.c.

Rated load in Ac1: 1-2

Input Opto-coupled

Maximum voltage: 230 V a.c.+20%; 0,7 W

- Safety: CAT III (EN61010)

STANDARD

Meet with standard IEC62020 and IEC60947-2 Annex- M. .

Instruction Manual IM2145-U v0.8

Pag. 1/3

IM2145-U v0.8

Need help?

Do you have a question about the Contrel ELR-3A Series and is the answer not in the manual?

Summary

General Description and Safety

General Description

Device with 2 independent programmable relays, one main and one prealarm, featuring a potential-free input for external ON/OFF.

Preliminary Considerations

Check unit specifications against order and for transport damage. Information available on CONTREL website.

Reception Checks

Verify unit specifications match the order and check for any damage sustained during transport.

Safety Precautions

Staff must follow common safety measures. Ensure the equipment is not connected to the power supply when handling.

Installation and Technical Features

Installation and Start-up

Follow manual instructions for correct operation and safety. Ensure full installation before powering on the equipment.

Important Safety Warning

Unit protections may be ineffective if used for unintended purposes. Disconnect from power if malfunctioning or damaged.

DIN Rail Installation

Route all live conductors through the CBT. Ensure connections are within the electrical board and handle with care.

Technical Features

Details on relay type, power supply voltage, operating temperature, humidity, altitude, IP protection, and output contacts.

Device Operation and Indicators

Description of LEDs and Buttons

Overview of equipment status indication via display and LEDs, and controls for setup, test, and reset functions.

LED and Display Indication

Main trip relay status changes color (green/red). Prealarm LED activates when leakage exceeds preset threshold.

Reclosing the Equipment

Equipment status returns to initial after a manual RESET or power disconnection (for trip) or manual RESET (for prealarm).

Parameter Settings and Output Features

Main Relay Parameter Setting

Setting trip delay (ta), sensitivity (la), and safety type (std/+) for the main relay via buttons and display.

Setup Settings Menu

Access setting menu via PROG button. Use buttons to navigate submenus and change preset values like frequency and current limits.

Output Relay Features

Graph showing DC load breaking capacity and electrical useful life for AC loads based on current.