User Guide for Mikro models including: RX 232 Earth Fault Relay, RX 232, Earth Fault Relay, Fault Relay, Relay

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RX232 Earth-fault Relay

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RX232 Earth-fault Relay
User Guide

(a) (b)

(c) (d) (e)

RX 232
EARTH FAULT RELAY

- Io

Earth-Fault Setting - Io> Protection - Io> Delay Type - tIo>(Seconds) /ktIo> - Io>> Protection - tIo>>(Seconds)
Functions Setting
Date and Time Setting

(f ) (g) ( h)
( i ) ( j )

( a ) Function indication ( b ) Data indication ( c ) Auxiliary power supply indicator ( d ) Low-set start/trip status indicator ( e ) High-set start/trip status indicator ( f ) Up button ( g ) Down button ( h ) NFC detection area ( i ) Test button ( j ) Reset/Mode button

Typical Application Diagram
DANGER

Features
- Two stages setting for earth fault - IDMT and definite time - Circuit breaker failure protection - Selectable fundamental or true RMS - Selectable 50 or 60 Hz frequency - Programmable output contacts

- 30 Fault, 30 pickup and 120 event records date & time stamp - Build in NFC for read and set parameters through
mobile app - Complies with IEC 60255 standard - ANSI code: 50N, 51N, 50BF

Case Dimensions
96mm
FRONT

90mm 70mm
SIDE

91±0.5mm
PANEL CUTOUT

NFC Communication
Relay provides NFC communication convenient for user to read parameter values or to change setting through Android phone with NFC feature and Android OS version 10 and above. The Mikro RX app can be downloaded in the mobile with one of following Methods:
{Make sure phone NFC function is turned on} - Scan the QR code or align the mobile phone
NFC antenna on the NFC logo at relay front panel. This will take you directly to the app on Google play

96mm 91±0.5mm

IDMT Curve
Normal Inverse 3/10

Normal Inverse 1.3/10

Very Inverse

Long-time Inverse

Extremely Inverse

Technical Data
Ratings
Rate Current In.................................... 5A Frequency............................................. 50 or 60Hz Burden.................................................... <0.3VA at In Thermal Withstand............................ 4 x In Continuous
Auxiliary Supply
Supply Voltage.................................... 198 ~ 265VAC Supply Frequency.............................. 50 or 60Hz VA Rating............................................... 3VA max
Accuracy
Protection Thresholds...................... ±3% or ±20mA Time Delay............................................ ±3% or ±40ms
Setting Ranges
(i)Earth-fault Setting Low-set Setting Io>............................. 0.1A - 10.0A(2% - 200%) Low-set time Multiplier ktIo>.......... 0.01 - 1.00 Low-set Definite Time tIo>............... 0.03 - 100s Delay Type............................................ DT, NI3/10, NI1.3/10, VI, LI, EI High-set Setting Io>>......................... OFF/0.1 - 50A (2% - 1000%) High-set Definite Time tIo>>........... 0.03 - 100s
Output Contacts
Rated Voltage......................................... 250VAC Continuous Carry.................................. 5A(Cos = 1.0) Expected Electrical Life....................... 105 operations Expected Mechanical Life................... 5 x 106 operations
Enviromental Conditions
Temperature............................................ -10°C to 55°C Humidity................................................... 5% to 95% non-condensing
Mechanical
Mounting.................................................. Panel mounting Dimension (mm) ................................... 96(w) x 96(h) x 90(d) Enclosure Protection............................. IP54 at the panel
IP20 at the body Approximate Weight............................. 0.65kg
NFC Communication
Operation System.................................. Android OS Software Version ................................... Version 10 and above

System Operation

Fucntion

Data

Measurement

earth-fault measurement
Press "Mode"
earth-fault previous tripped current

Parameter Settings

Menu
Press and hold "Mode" for 1s enter menu
Press "Mode"

Earth-Fault Setting Io> Protection (A) [DEF=0.5] Io> Delay type [DEF=NI] tIo> (Seconds)/ktIo> [DEF=0.1] Io>> Protection (A) [DEF=10.0] tIo>> (Seconds) [DEF=0.05]

Push Button Operation

Trip Test

Press and hold "TEST" button for 3.5 seconds

Trip Reset

Press "RESET" button

Scroll Display Press "MODE" button

Enter Menu Mode
Set/Save Setting
Adjust Setting
Clear Thermal %
Display Off Mode

Press and hold "MODE" button for 1second
Press "UP" and "DOWN" button simultaneously
Press "UP" or "DOWN" button
Press and hold "UP" and "DOWN" button simultaneously for 1.5 seconds on Thermal page Press "RESET" button for 10 seconds to toggle display off mode. The display will switch off after 6 minutes if no key is pressed.

Date and Time Setting Year Month Day Hour Minute Second [DEF=Default setting]

LED Indicator

LED AUX I> I>>

Status

0 0 0 No Auxiliary power suppply

1 0 0 Normal condition, no tripping

1 1 0 Low-set pickup

1 0 1 High-set pickup

1 B 0 Low-set tripped

1 X B High-set tripped

1 = ON 0 = OFF B = Blinking X = don't care

Functions Setting Frequency [50Hz/60Hz] [DEF=50Hz] Measurement display [Fn= Fundametal, RnS= RMS] [DEF=Fn] Output R1 reset type [n-A= Manual, AUt= Auto] [DEF=n-A] Output R2 reset type [n-A= Manual, AUt= Auto] [DEF=AUt] Output R2 function [DEF=IrF] [Str= Start, trp= Trip, cbF=Circuit breaker failure, IrF= Internal relay failure]
*IRF contact function Relay healthy : R2 energized Relay fault : R2 denergized
Output R1 link element [Refer figure 1] [DEF=3h] Output R2 link element [Refer figure 1] [DEF=3h] CBFP Delay [0.05s - 10.0s] [DEF=0.1] NFC remote set [Yes/No] [DEF=No]

Digit1

Digit1
HEX Io>> Io> 0 00 1 01 2 10 3 11

Figure 1: Link element in Hexadecimal value
0= Off, 1= On

User's setting
User's setting hexadecimal
value

Digit1

* Not applicable when output R2 function set as cbF or IrF