ENTES ELR-30-A Manual

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Side 1/4

Trip Characteristics for t ≥ 0.15s

EN 60947-2:2003

B.4.2.4.2.2 Operating characteristic for CBR’s having a limiting

non-actuating time higher than 0.06 s declared by ENTES. The

maximum break time at IΔn, 2 IΔn, 5 IΔn, and 10 IΔn.

Earth Leakage Current

Trip setting

Maximum Break Time

I∆n 2I∆n 5I∆n110I∆n2

0.15 s 0.5 0.25 0.25 0.25

0.25 s 0.5 0.35 0.35 0.35

0.5 s 0.6 0.6 0.6 0.6

0.8 s 0.9 0.9 0.9 0.9

1 s 1.1 1.1 1.1 1.1

2.5 s 2.6 2.6 2.6 2.6

5 s 5.1 5.1 5.1 5.1

10 s 10.1 10.1 10.1 10.1

Features

1. Wide leakage current adjustment range

2. Adjustable earth leakage trip time

3. Instantaneous trip (for details refer trip characteristics)

4. “Test Feature” to check product functionality

5. “Manual Reset Feature” with reset buton

6. Remote resetting

7. 1C/O+1NO relay output.

8. LED indications for all failures

9. Wide auxiliary supply voltage range

10. DIN rail mounting

11. Easy to install

12. Compact size

Recommendations

It is recommended to use CBCT’s as mentioned in the table, to ensure the trip

current accuracy.

Caution

1. Always follow instructions stated in this quick start manual.

2.Before installation, ensure that specications compatible with intended

application.

3.Installation must be done by a successful electrician.

4.Suitable dampers must be provided in case of over-vibration during installation.

5.Automation and control devices must be installed so

that they are protected against any risk of involuntary

actuation.

6.Disconnect the power before working on the device.

Terminal Details

Use Cu Wire of 60/75°C only

Notes

1. Since the innovation of the product is a regular process, we reserve the right

to change all its features without prior notice.

2. The factory settings of the device are set to 30mA trip and instantaneous

delay.

These settings can be adjusted as needed by the installation. A seal is supplied

allowing the user to secure the clear window and hence prevent any unnecessary

adjustment of the settings.

3. To comply with regulations, it is recommended that the device should be

tested periodically to ensure correct operation.

4. In case of excess harmonics power transmission cables have more leakage

because of low impedance o󰀨ered by cable capacitance, IΔn setting need to

keep at higher level.

ELR & CBCT

EARTH LEAKAGE RELAY & CORE BALACNCE

CURRENT TRANSFORMERS SERIES

Quick Start Manual

Trip Characteristics

Standard IEC 60947-2 annex M indicates the operating characteristic for a

nontime-delay type in table B.1 in B.4.2.4.1 in standard IEC 60947-2 annex M.

CBRs having I∆n = 30 mA shall be of the non-time-delay type.

If the trip time is set at ‘0’ sec, then for 5 I∆n & 10 I∆n, the tripping time will be

< 40 ms for all current ranges.

Earth Leakage Current I∆n 2I∆n 5I∆n

110I∆n2

Maximum Break Time 0.3 0.04 0.040.15

1) For CBRs having I n < 30 mA, 0.25 A may be used as an alternative to 5I n

2) 0.5 A if 0.25 A is used

Trip Time in s

Trip Current / Set Current

Trip Characteristics for non delayed trip at I∆n > 30mA

For CBR’s having limiting non-actuating time of 0,06 s the operating characteristic

is given in table B.2. in B.4.2.4.1 in standard IEC 60947-2 annex M.

Earth Leakage Current I∆n 2I∆n 5I∆n

110I∆n2

Maximum Break Time 0.5 0.15 0.150.2

Trip Time in s

Trip Current / Set Current

Trip Characteristics for ∆ t =0.06 s, I n > 30mA

Trip Time in s

Trip Current / Set Current

Trip Characteristics for ∆ t > 0.15 s

Trip Time in s

Trip Current / Set Current

Trip Characteristics for ∆ t > 2.5 s

TECHNICAL SPECIFICATIONS

ELR-30-M ELR-30-A

SUPPLY

Supply Voltage

220-415VAC / 220VDC -20% to +20%

Power Consumption (Max.)

10VA

LED

Indication

Power On

ON (Green Led)

EL / CT

ON (Red Led) Relay Trip / Blinking (CT OPEN)

Leakage Current/ TST

BY bar graph 30%(Green), 45%(Green), 60%(Yellow), and 75%(Red), Blink Test/Reset Switch is pressed

Treshold I∆n (A)

0.03 – 0.1 – 0.3 – 0.5 – 1 – 3 – 5 – 10 – 20 – 30

Frequency

50-60Hz

RELAY O / P

Contact Rating

1 C/O + 1 NO; 5 A (Resistive) @ 240 VAC / 30 VDC

Contact Arrangement

1 C/O SPDT and 1 NO SPST

Utilization Category (AC-15)

3.0 A at 120 V & 1.5 A at 240 V

Utilization Category (DC-13)

0.22 A at 125 V & 0.10 A at 250 V

Mechanical Life Expectancy

1X107

Electrical Life Expectancy

1X105

Contact Material

Ag Alloy

RESET

Reset

Manual Reset Auto Reset

No. Of Auto Resets

- 4

Clear Auto Reset

After 1 hour of healthy condition or supply interruption

Test / Reset

Local and Remote (Non Potential Free Contacts) (Up to 10 m)

∆t Settings (s)

0.040 – 0.06 – 0.15 – 0.25 – 0.5 – 0.8 – 1 – 2.5 – 5 – 10

Reset Enable

Below 50% of set I∆n in presence of CBCT

Reset Time

<1 s

Type Class

‘A’ True RMS measurement upto I∆ 1A (as per IEC 60947-2 Annex M)

Setting Accuracy

‘AC’ True RMS measurement 30mA to 30A (as per IEC 60947-2 Annex M)

Repeat Accuracy

- 20% (Including CBCT accuracy)

AMBIENT

± 2%

Storage Temperature

-20°C to + 80°C

Operating Temperature

-15°C to + 60°C

Relative Humidity

5 to 95% Rh (without condensation)

Max. Operating Altitude

2000 m

Degree of Protection

IP-20 for Terminals, IP-40 for Enclosure

Operating Position

Any

Pollution Degree

OTHERS

Mounting

Din Rail

Dimensions in mm (W X H X D)

36 X 90 X 65

Weight Approx. (Un-packed)

150g

Certication

CBCT for Type A & AC Current

Size (W X H X D) mm Inner

Diameter

Max. Current

Per Phase

I∆n setting range if there are

pulsating DC current(Type A)

CBCT-70

37x133x109.3 160A70mm 30mA to 3A

CBCT-92

37x155x132 92mm 200A 30mA to 3A

CBCT-120

37x176x153 120mm 250A 30mA to 3A

CBCT-210

37x282x250 210mm 400A 30mA to 3A

Functional Description

Earth Leakage Protection

• Leakage current is detected through core balance current transformer.

• When earth leakage current exceeds the set value of trip current, for the trip

time which is adjustable with the trimpots on the front panel, trip occurs.

• For details refer trip characteristics.

• The Red LED “EL” indicates the presence of Earth Leakage.

CBCT Connections

All main primary conductors shall pass through the core area of CBCT. Use

shielded wires for secondary terminal connections to Bl & B2. Connect the

shield to the Y2 terminal of device, which is circuit ground of the device. The

CT wires should be placed adequately away from high current carrying

conductors or source of strong magnetic eld to avoid noise pickup. The

Earth Leakage Relay also veries CT connection. If CT winding is open, red

LED“EL” blinks.

Functional Diagram

Test / Reset

Press & hold “tst/rst switch” for 1sec. The product will change its state from

“healthy” to “Trip (Test)” and vice versa “Reset”.

Remote Test / Reset

For “remote testing & resetting”, connect an external push button/switch

between Y1 and Y2. For test sequence, press and hold the external push

button switch for 1sec.

Auto/ Reset

For the ELR-30-A, product will automatically reset itself after 4 earth leakage

fault in 15min. Reset count is cleared after 1 hour of healthy condition, supply

interruption or pressing of the test /reset switch.

Overall Dimensions and Mounting Details

Front Face

1. Trimpot for “earth leakage current” setting

2. Trimpot for “trip time” setting

3. “Test/ Reset Function” button

4. “Power ON” LED indication

5. “Earth leakage fault” or “CT open” LED indication

6. Bar graph for “earh leakage fault” indication

7. “Type A” indication

Notes

1. For CT connections use shielded wire and connect shield to Y2 terminal.

2. For single phase applications, only phase and neutral cables need to be

passed through CBCT.

Do not pass ground conductor through CBCT connected to earth

leakage relay.

4. All conductors to be protected must pass through CBCT.

5. Do not apply supply voltage at CT and switch terminal.

6. Connect the wires between CBCT and ELR with respect to B1 & B2. Wire

gauge should be as mentioned under “Terminal Details”.

7. This device satises the requirements for Type A devices which provides

protection against leakage current in systems where alternating and

direct current are used together.

Conformity to Standarts EMC

Harmonic Current Emission IEC 61000-3-2 Class A

Voltage Flicker and Fluctuations IEC 61000-3-3 Class A

ESD Level IIIEC 61000-4-2

Radiated Susceptibility IEC 61000-4-3 Level III “Criteria B”

Electrical Fast Transients IEC 61000-4-4 Level IV

Surge IEC 61000-4-5 Level IV for AC & Level I for DC Products

Conducted Susceptibility Level III for ACIEC 61000-4-6

Voltage Dips and Interruptions (AC) IEC 61000-4-11 Level I, II, III, IV, V, VI & VIII

Voltage Dips and Interruptions (DC) 50% for 50mSec @ Nominal Voltage 15V DC

Conducted Emission CISPR 11 Class A

Raiated Emission CISPR 11 Class A

Security

Test Voltage Between I /P & O/P IEC 60947-5-1 / UL 508 2 kV

Test Voltage Between all Terminals & Enclosure IEC 60947-5-1 / UL 508 2.5 kV

Over Voltage Category IEC 60947-1 IV

Impluse Voltage Between I/P & O/P IEC 60947-5-1 Level 4kV

Single Fault IEC 61010-1

Insulation Resistance UL 508 >50kOhm

Leakage Current UL 508 <3.5 mA

Environmental

Cold Heat IEC 60068-2-1

Dry heat IEC 60068-2-2

Vibration 5g(10-50 Hz)IEC 60068-2-6

Repetitive Shock IEC 60068-2-27 40 g, 6 ms

Non-repetitive Shock IEC 60068-2-27 30 g, 15 ms

Note: As per IEC60947-2 (B.4.2.2) The minimum value of rated residual non operating current is 0.5 IΔn.

Centre the cables within the toroid

toroid ∅ ≥ 2 x Total Cable ∅

Cable Routing Details

Connection Diagram

FAIL SAFE MODE

(CONTACTOR)

NON—FAIL SAFE MODE

(SHUNT TRIP COIL)

FAIL SAFE MODE

(CONTACTOR)

NON-FAIL SAFE MODE

(UV TRIP COIL)

NON-FAIL SAFE MODE

(CONTACTOR)

FAIL SAFE MODE

(UV TRIP COIL)

ELR Operating

condition

Contact Position

1 NO (PSO/Fail Safe) 1 CO (PSO/Fail Safe)

No Auxiliary

Healthy / Rest State

Trip State

CBCT SIZE WEIGHT

(in gr.)

A B C D E

CBCT-70 70 240 20 27 60109 133

CBCT-92 92 20 27 73250 132 155

CBCT-120 120 255 153 17620 27 73

CBCT-210 210 20.5 250 128280 282 28

SINGLE PHASE

APPLICATION

Rev.2

Produkt Specifikationer

Mærke:	ENTES
Kategori:	Ikke kategoriseret
Model:	ELR-30-A

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