Rishabh ELPR User manual
ELR Relay
AUX
L N
NO COM NC
RELAY2
CBCT IN
IN OUT
COM NO
EXT RST SW
Y2 Y1
123 4 56
78910 11 12
ELPR Operating Manual and Installation guide
Connector details:
Connection diagram:
Installation:
Installation to be carried out by qualied person along
with life protecting equipment to prevent hazardous shock
Isolate incoming supply before connection.
Do not expose device to Rain, Dust environment.
Keep at least 10-15 mm distance on both sides of device.
Do not install near Vibrating environment.
Do not install near Heat source.
Install Fuses of 2 Amp in series with supply.
Use Sealing provision to protect from unintentional
adjustment.
Mounting:
To mount the device it should be fastened to a standard 35mm DIN rail
(DIN50022). Key hole is provided for wall mount . follow steps to mount
and unmount the instrument
Removing From DIN rail
Mounting On DIN rail
ELPR is earth leakage detection and a protection device
used in electrical installations to measure leakage current
occurs due to punctured or weak insulations or contact to
live parts. Earth leakage current is measured through CBCT.
1CO Relay is provided to disconnect breaker and
additional 1NO configurable relay for alarm / fail safe
purpose is provided, CBCT open detection feature ensures
that no false measurement is made. LED indicates Leakage
current ( bargraph ),relay state, CBCT connections.
Two models Smart, Smart+ models are available.
CBCT
L1
N
O
A
D
S1 S2
34
E
L
L2
L3
510 12
LN
Aux Supply
67
ELR
8 9
Remote
Reset
12
RELAY
Dimensions : 90 x 65 x 35 mm As Per DIN 43880
Use proper screw driver so that sufficient
but not excess force is applied.
Wire of 2 sq.mm with lug is recommended
for all connections. Rated switchgear to be
used for inputs if applicable.
connect supply voltage with 2 Amp fuses
Remote Reset contacts are electrically
isolated from other input / output but are
not potential free
Terminals are marked as 1- 6 and 7-12
Terminal 1-2 - Relay2 COM-NO ( AL/FS)
Terminal 3-4 - CBCT S1, S2 connection
Terminal 5-6 - Remote Reset connection
Terminal 7-8-9 - Relay1 NO-COM-NC (ELR)
Terminal 10-12 - Auxillary supply
Technical Specications:
Input :
Leakage current (ln) 30mA to 30A (Type A)
ELR Tripping range 80% - 100 % of In
Alarm Tripping range > 50 % of In
Resetting value Below 15% of Trip value
Auxiliary Supply:
Auxiliary supply option1 60V - 300V AC/DC
Auxiliary supply option2 20 - 60V DC / (20-40 VAC)
Auxiliary supply frequency 45 to 66 Hz range
Accuracy:
Leakage current + 5% of full scale
Trip Delay + 5% of set trip time or 50ms
(Including Setting Accuracy ) (whichever is greater)
Instantaneous Trip < 25 millisecond for leakage current greater than
5 x In, with exception of 30A setting
Reference Conditions for Accuracy:
Reference temperature 23°C +/- 2°C
Input Waveform Sinusoidal (distortion factor 0.005)
Input frequency 50/60 Hz ± 2%
Auxiliary supply voltage 230 ± 1%
Auxiliary supply frequency 50 or 60 Hz ±2%
VA Burden :
Auxiliary supply burden < 4 VA approx
Applicable Standards:
EMC IEC 61326-1:2012 Table2
Terms, definitions & Test method IEC 60688
Immunity IEC 61000-4-3 10 V/m Min - Level 3
Safety IEC 61010-1-2001,Permanently connected use
IP for water & dust IEC60529
Pollution degree 2
Installation category III 300 V
High Voltage Test 2.2 kV AC, 50Hz for 1 minute between
all electrical circuits
Environmental:
Operating temperature -20 to +65°C
Storage temperature - 40 to +75°C
Relative humidity 0... 90% (non condensing)
Shock Half sine 30gn duration 18 ms ( IEC 60068-2-27)
Vibration 10...150...10 Hz, 0.15mm amplitude
Enclosure IP40 - Front face Only , IP20 - Terminals
Relay Contacts:
Relay 1 ( ELR ) Output 1 CO ( 1NC + 1NO )
Relay 2 ( Alarm / Fail safe Output ) 1 NO ( Optional )
Contact rating 5A / 250 VAC or 30VDC
Mechanical endurance 1 x 10^7 OPS
Electrical endurance 5 x 10^4 OPS
Key operations : Separate Trip and Reset keys are provided
1. Trip key - Pressing of test key ( > 3 second ) and holding till
release of key triggers fault condition of relay contacts.
2. Reset key - Pressing key ( > 3 second ) reset / clear the fault
relay condition if fault current is within normal current range.
This key has memory function till power fail of instrument.
Potentiometers operations :Potentiometers are provided for
1. Leakage current (In) - To set Leakage current in Ampere
2. Trip time setting (T-DLY) - Fault sustain time in seconds before
relay driven to fault state.
DIP switch : DIP switch is provided in Smart+ model only
ELR relay configuration - En / D-En,
Relay 2 configuration - Alarm or fail safe
Leakage Fault reset mode - Automatic with 3 retry or Manual reset
Setting interface:
Step1 - Push
Step2 - Pull
Step1- Pull clip
downward
Step2-Push clip
up for click fit
Smart Model Smart Model
RELAY
AL / FS
+
---
LED indication Continuous on
Blinking LED
Relay EL Relay in operated
P-ON ( Green ) Power on At 0.7 Seconds CBCT Open
Proportional ON to set IN
value ( In percent )
Bargraph
Alarm ( Relay ) activated
1. PON delay - 1 Second
2. Reset Delay -
Manual mode -1 second after reset key long press release
Auto mode - 10 Seconds fixed between attempts of auto reclose
Reclosing attempts - 3 ( Fixed ) before final trip
3.Trip Delay -
- As per front potentiometer setting in seconds
- ( Trip delay = 0 ) Instantaneous trip for current 5 x In
4. Trip Hysteresis - 15% of trip value
5. Relay1 Reset option : Auto-recloser / Manual
6 Relay1 configuration mode : Energize / De-energize
Parameter settings:
Indications:
Onsite setting below parameter possible
Manual / Auto reset option
1. Manual reset - using RESET key
Auto reset - If fault condition occurs attempts are made forcefully
to clear fault condition and fault current assessed to decide further
action. if fault continues after 3 attempt relay is tripped permanently
if fault recovered then reset condition is generated.
2. Energize / De-Energize of EL 1NO+1NC (1CO ) relay -
Defines Relay NO and pole contact state in fault condition
Energize - In fault condition relay contacts are shorted ie relay is
Energized ( on )
De-Energize - In fault condition relay contacts are open ie relay is
D-Energized ( off )
3. Relay2 ( 1 NO ) configuration - Alarm Relay / Fail safe Relay
Alarm Relay - if leakage current exceeds 50 % of set value alarm
relay is activated so to trigger suitable indications connected.
Fail Safe Relay - Relay is permanently energized once powered on
and stay on until powering off of the instrument.
Alarm relay configuration setting can be altered using key operation
ELR Smart+ model:
Rishabh Instruments LTD.
F-31, MIDC, Satpur, Nasik-422007 , India
Tel : +912532202371/028 Fax:+912532351064 , Email : [email protected] , www.rishabh.co.in DMAN-00IM-1018 Rev.C 01/2023
On site setting of relay Energize (En) / De-Energize (D-En) :
Smart Model has two settings - 1. Main Relay ( Relay1) state En / D-En 2. Additional Relay ( Relay2 ) state En / D-En
Smart+ Model has only one setting - 1. Relay2 state En / D-En ( As main relay state is configurable through DIP switch )
Combination of bargraph LED ( 30 % , 45 % , 60 % , 75 % ) used to indicate present and new set value
For setting the parameter, Press both keys simultaneously for more than 3 seconds.
Setting1 : For Main (ELR) Relay ( Relay1 ) -
Setting is activated is indicated by blinking of Bargraph 75 % LED and 30% LED - blink at rate of 0.5 second
If 45 % LED ON and 60 % LED is OFF then relay is configured as En state setting
If 45 % LED OFF and 60 % LED is ON then relay is configured as D-En state setting
- Press Test button to toggle / change state setting.
- To confirm state setting parameter and to advance second setting press both key for Long duration ( more than 3 Seconds )
Setting2 : For Additional Relay ( Relay2 - Alarm relay function ( model ) / Fail safe or Alarm ( ELR model )
Setting is activated is indicated by blinking of Bargraph 75% LED and 30% LED - blink at rate of 0.25 second
( Twice Fast than First setting )
If 45 % LED ON and 60 % LED is OFF then relay is configured as En state setting
If 45 % LED OFF and 60 % LED is ON then relay is configured as D-En state setting
Press Test button to toggle / change state setting.
To confirm state setting parameter and to exit settings press both key for Long duration ( more than 3 Seconds )
15 % Hyst.
Tripping Diagrams:
ON ( shorted ) -
OFF ( open ) -
Relay NO and COM contacts :
0
Aux supply
80 % of In - Trip level
50 % of In - Alarm level
Aux supply Interruption
EL relay
Energize
NC
NO
Relay2 as
Fail safe NO
Relay2 as
Alarm
NO
15 % Hyst.
T-DLY
ELR relay Reset level
Alarm relay Reset level
Reset key
operation
Smart Smart+
