TERASAKI ELR-3B User manual

Electronic type B earth leakage current protection and monitoring relay. Associated to
external core balance transformer the . It has 2 programmables outputsyCTB-1/xxx famil
relays. Main trip and prealarm signal. It has one free voltage input for external TRIP/RESET.
Mounting in DIN rail 466277 (EN 50022) or PANEL 72x72 by means of accesories .3EDA03
Displays setting values and instantaneus earth leakage current value.
GENERAL DESCRIPTION
PRELIMINARY CONSIDERATIONS
INSTALLATION AND START-UP
IMPORTANT !
!
Tripping delay (s)
Sensivity (A)
Type
code
CHECKS ON RECEPTION
On receving the instrument, check the following points:
You can download more information from Contrel Elettronica website, www.contrel.it
SAFETY PRECAUTIONS
warning included in the instruction manual.
green LED (ON) when it is operation and, therefore, it shows that there is voltage and
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
the electrical panel.
Disconnect the equipment from the power supply when the unit´s safety protection
systems are not working or there are signs of a problem (in case of visible damage).
INSTALLING THE EQUIPMENT
Wheight : 168 gr
52,5
85
45
43,5
67,9
Fixed by rail DIN 46277 (EN 50022)
dimensions in mm.
Rated current: 10 Ac.a.
Rated voltage: 250 Vc.a.
Rated Load: 2.500 V·A
89
1245 6
10
11
13 14 15
Reset
Test
ELR-3B Residual Current device and Monitor type B
RGU - 10 C
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 Power Supply (L - 230 Vac or +/-24÷125Vdc)
11 Power supply (N - 230 Vac or +/-24÷125Vdc)
12 Not used
Optocoupled, 0.7W /230 Vac ± 20%
Rated current: 10 Ac.a.
Rated voltage: 250 Vc.a.
Rated Load: 2.500 V·A
ELR-3B
TECHNICAL FEATURES
- Reclosing type: Manual via RESET button or by cutting power supply.
- Rated power supply voltage: 230 ( 20%) 50/60 Hz, 6 VA
±
- : -10ºC / +50ºCOperating temperature
- Humidity (without condensation) : 5% .... 95%
- IP Protection
Assembled equipment (front) : IP 41
Non assembled equipment (sides and rear cove) : IP 20
- Maximum operating height : 2000 m.
-:Connections
2
0,127 - 2,082 mmPermissible cable section:
Recommended tightening torque: 0.5-0.6 Nm
Length of cable to strip: 7 mm
Recommended screwdrivers length: Bar 0.4 x 2.5 x 80 mm, 160 mm
- 13-14-15 and 4-5-6Switch Output contact features
: 10 / 15 A a.c.Rated current/Maximum instant current
: 250 / 400 V a.c.Rated voltage/Maximum switching voltage
AC1: 2,500 V·ARated load in
DIMENSION
Instruction Manual IM4000-U-T v0.92
Pag. 1/2
IM4000-U-T v0.92
Rated Power Supply
3ED36G ELR-3B 0,1-0,2-0,3-0,4-0,5-0,75-1-5-10 220-240V 50-60Hz
3ED36T ELR-3B 24-125
0,03-0,1-0,3-0,5-1-3
0,03-0,1-0,3-0,5-1-3 0,1-0,2-0,3-0,4-0,5-0,75-1-5-10 24÷125V dc
Optional front panel adapter

ELR-3B Residual Current device and Monitor type B
-RESET BUTTON
-TEST BUTTON
- BY .ALARM A manual , or remote ON is required to return to the equipment's initialRESET
status. When the trip is caused by the remote OFF signal, it can only be re-armed by the remote ON
signal.
this status.
Other display MESSAGES
SAVE
OVR
ERRt
Enters setting values
Current leakage reading off scale
Poor toroidal connection
Cause of trip
Message display
Test
Remote signal ON/OFF
Current leakage
TESt
EXT
ALARM
AUTO
-GREEN LED: Equipment on
-RED LED: Leakage trip
-YELLOW LED: Prealarm Id
-MAIN RELAY
PREALARM RELAY DISPLAY
B
RECLOSING THE EQUIPMENT
Shows equipment status via a display and 2 LED's.
- 5 button equipment setup and setting.
-.LED and display signals a
change of status by changing from green to red.
Display event type messages or values.
-.PREALARM SIGNAL. The yellow LED only
comes on when current leakage exceeds the
preset prealarm threshold.
mS
mA
mA
DESCRIPTION LED AND BUTTONS
contrel
ELR-3B
-DELAY SETTING
-SENSITIVITY SETTING
-SAFETY SETTING
-RESET PREALARM SETTING
WIRING DIAGRAM
The message and two values appear on the, .td
screen after pressing the td
The..
selected value to be saved is displayed by showing the message SAVE.
PROG
MAIN RELAY PARAMETER SETTING ( , and std/+ )t I
dd
-,I.
d
SENSITIVITY SETTING The same operation as above setting is carried out by
pressing I.
d
- , std/+. Pressing thisSAFETY SETTING button select the type of safety you want:
(Std) Standard, contact NO
(+) Positive, contact NC the symbol appears in the display.
PREALARM RELAY PARAMETER SETTING ( , ,std/+ and Auto)t I
dd
+
A short press on enters the prealarm channel activating the message onPROG Alarm
the display.
. Select the time delay for giving the prealarm signal,t.
d
-,I. S
d
SENSITIVITY SETTING elect the equipment's prealarm threshold. Selected
sensitivity stated as % in the main channel (OFF-50-60-70-80-MAIN).
- , std/+. SPOLARITY SETTING elect the prealarm output signal polarity.
REC
-SETTING OF RESET OF PREALARM ctivating , the equipment
automatically resets the prealarm when the leakage current drops below the preset
alarm threshold.
CURRENT
Sine half wave
Sine half wave phase controlled (90º-135º)
Sine current at 1000Hz
Sine current at 400Hz
Sine current at 150Hz
Smooth DC current
Lower limit
0,8xldn
0,8xldn
1xldn
0,8xldn
0,8xldn
0,8xldn
0,8xldn
Upper limit
1xldn
1,4xldn
1,3xldn
1xldn
1xldn
1,7xldn
1,4xldn
Alarm range according to leakage current measured
Pag. 2/2
30 m A
Sensinilidad / Sensivity
300 mA
500 mA
CTB-1/ ,60 CTB-1/80, CTB-1/110
CTB-1/22, CTB-1/35,
Type of current sensor CTB-1/... series according sensitivity I nD
CTB-1/ ,160 CTB-1/210,
RGU - 10 C
NL1 L2 L3
1-S1
2-S2
LOAD
1S12S2
Trip by SHUNT COIL.
- Manual reclose.
89
1245 6
10
11
13 14 15
Reset
External ON/OFF
Type CTB-1/...
ELR-3B
Power
Supply
NL1 L2 L3
1-S1
2-S2
1S12S2
- Manual reclose.
Reset
Test
LOAD
1 2 4 56 8 9
10
11
13 14 15
ELR-3B
Type CTB-1/...
Power
Supply
Terasaki Electric (Europe) Ltd.
80 Beardmore Way - Clydebank Industrial Estate
Glasgow - G81 4HT
www.terasaki.com
ELR-3B
IM4000-U-T v0.92