Contrel ELR-1D User manual

ELR-1D Instruction manual IM220-U v0.2 pag. 1 / 4
INSTRUCTION MANUAL
IM220-U v0.2
ELR-1D EARTH LEAKAGE RELAY IN A SINGLE DIN MODULE
WITH SEPARATED CURRENT SENSOR
GENERALITY
The device type ELR-1D is an amperometric relay of maximum homopolar
differential current to use to control the insulation towards earth of networks of
Energy supplier, of electric machines, etc.
The device must be joined at a suitable toroidal current transformer of the CT line
in the way to point out the earth leakage current of the system to control and to
protect. The toroidal current transformer point out the vectorial sum of the current
present on the active conductor of single phase line, three-phase with or without
neutral (inside the toroidal current transformer will pass all phase conductor and if
present the neutral, but none protection conductor must pass), in the way to point
up the leakage current towards earth, depend of the insulation level line under
control.
When the current read exceed the threshold value set the exchanging contact,
available in output, will commute in the way to protect the line under control using
opportune opening coils switch or contactor or to signal at distance the low
insulation condition of the line or equipment under control.
INTRODUCTION
The ELR-1D has a case with reduced dimension (1 module of 17.5 mm) to mount
on a DIN rail, in the way to use it in the application where the space available is
limited.
A wide range of current and time of delay calibration, allows to use it in a lot of
application, both like signalling of low insulation and like protection line according
with the norms (EN 60947-2 attachment M), to realize adequate vertical and
horizontal selectivity, etc.
The device has the following principal features: on input circuits of the measure
circuit has opportune filters doing it exempt by external noises. The functioning is
insured also with sinusoidal current and unidirectional button (type A according to
norms IEC 755).
On the front it’s possible to program the tripping current (30mA ÷ 30 A), the
tripping delay (0,02 ÷ 5 sec.) using some micro-switches. The device has a
normally open contact in output for tripping and manual reset functioning (reset
button).
MODELS:
In basis of power supply there are 4 models:
- ELR-1D-230: 220÷240Vac (standard)
- ELR-1D-110: 100÷130 Vac/dc (optional)
- ELR-1D-48: 48Vac/dc (optional)
- ELR-1D-24: 24Vac/dc (optional)
INSTALLATION
Only a qualified technician can do the installation. The instrument installation must be done in total absence of voltage.
The instrument must be intact and it haven’t damages caused of transport. The power supply must be compatible with the
tool range.
The wire of connection between the relay and the toroidal current transformer must be twisted or shielded in presence of
strong electromagnetic noises or considerable length. It’s better to use a cable with a section of 1 mm2and a length lower
than 30 meters. The toroidal current transformer must be connected at the terminals 1-2 (coil of measure).
To test the device it’s possible to use the bottom of TEST that caused the intervention of relay after the delay set.
123
456
RESET
0,3
In(A) 
1
2
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
x1
x0,1
TEST
ON
3
TRIP
ELR‐1D
RESET
In(A) 
delay t (sec)
0,3
0,02
x10
x1
x10
1
2
0,1
0,2
0,2
x1
x0,1
TEST ON
3

ELR-1D Instruction manual IM220-U v0.2 pag. 2 / 4
DESCRIPTION – PROGRAMMING
Legenda:
1. Green LED ON to signal that the device is powered on
2. Micro-switches to program the tripping current 3. Micro-switches to program the tripping delay
4. Red LED (TRIP) to signal the device tripped
5. TEST button to verify the functioning device
6. RESET button for manual reset
7. Terminal board
8. Terminal board
123
456
RESET
0,3
In(A) 
1
2
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
x1
x10 x0,1
TEST
ON
3
TRIP
ELR‐1D
RESET
In(A) 
delay t (sec)
0,3
0,02
x10
x1
x10
1
2
0,1
0,2
0,2
x1
x0,1
TEST ON
3
1
2
3
4
8
6
5
7
0,03A0,1A0,2A
0,3A1A2A
3A10A20A
30A
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,3
In(A) 
1
2
x1
x0,1
3
In(A) 
0,3
x1
x10
1
2
x0,1
3
0,02s. 0,1s. 0,2s.
0,3s. 0,4s. 0,5s.
1s. 2s. 3s.
4s. 5s.
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
delay t (sec)
0,02
x10
0,1
0,2
0,2
x1

ELR-1D Instruction manual IM220-U v0.2 pag. 3 / 4
WIRING CONNECTION
Aux
Wiring diagram with switch withopening coil.
Earth
*
* power supply Uaux
- terminals 3 - 6 = 220÷240Vac
- terminals 3 - 6 = 100÷130Vac/dc
- terminals 3 - 6 = 48Vac/dc
- terminals 3 - 6 = 24Vac/dc
ELR-1D-230
ELR-1D-110
ELR-1D-48
ELR-1D-24
ELR-1D
CT-1...
xxxx The output contact can be used to signal
at distance the ralay tripped.
DIMENSIONS
17.5 27.5
49
74
90
61 45
123
456
RESET
0,3
In(A) 
1
2
delayt(sec)
0,02
0,1
0,3
0,5
x1
x10
x1
x0,1
TEST
ON
3
TRIP
ELR‐1D
RESET
In(A) 
delay t (sec)
0,3
0,02
x10
x1
x10
1
2
0,1
0,2
0,2
x1
x0,1
TEST ON
3

ELR-1D Instruction manual IM220-U v0.2 pag. 4 / 4
FUNCTIONALITY
When the device is installed and correctly supplied, its green LED will be on. Te eventual trip of relay (LED trip on) can
depend by a presence of earth leakage current higher than the threshold set.
The manual reset can be performed pressing the RESET button on the front of the device. If it’s impossible to do the
reset after the tripping depends by a measured current, actually present, higher than the threshold.
TECHNICAL FEATURES
Auxiliary power supply
ELR-1D-230: 220÷240V 50-60Hz ±15%
ELR-1D-110: 100÷130V ac/dc 50-60Hz ±15%
ELR-1D-48: 48V ac/dc 50-60Hz ±15%
ELR-1D-24: 24V ac/dc 50-60Hz ±15%
Maximum consumption 3 VA
Tripping current adjustment range n0,03 ÷ 30 A divided in 10 levels
Tripping time adjustment range t 0,02 ÷ 5 sec. divided in 11 levels
Signalling led ON, led TRIP
External toroidal current transformer CT-1… serie
Output relay: voltage free contacts 1 contact NA 5 A 250V resistive load
Programmable functions tripping current threshold level, tripping delay level
Working temperature -10 ÷ 60°C
Storing temperature -20 ÷ 70°C
Relative humidity 95 %
Insulation test 3 kV 60 sec.
Position of mounting Indifferent
Type of connection Screw terminals, section wires max 2,5 mm
2
Protection degree IP 40 front with transparent cover - IP 20 enclosure
Mounting DIN 43700 Mounting on DIN bar 35mm, width single module by 17,5mm
Standards EN 60947-2:2007 M attachment - IEC 60755
Electromagnetic compatibility EN61000-4-2 / EN61000-4-3 / EN 61000-4-5 / EN 610004-4 / EN 61000-4.6
Contact the technical assistance or refer at specific document for application don’t described in this manual.
NOTE
At reason of the evolution of standards and products, the company reserves to modify in every time the features of the product described in this
document, that it’s necessary to verify preventively.
The liability of the producer for damage caused by defect of the product ”can be reduced or deleted (…) when the damage is caused joint by a defect of
product or for blame of the damaged or a person of which the damaged is responsible” (Article 8, 85/374/CEE).