Mikro x20 Manuel utilisateur
user manual
X20
EARTH FAULT RELAY
2
EARTH FAULT RELAY
Ver 1.00
3
3
Table of Contents
Table of Contents 3
1.0 Introduction 5
1.1 Symbols and Definitions .......................................................... 6
1.2 Dimension of X20 ................................................................. 7
2.0 Installation 8
2.1 Mounting .......................................................................... 8
2.2 Terminal Connection ............................................................ 11
2.3 Wiring ............................................................................ 12
3.0 Display 14
3.1 Keypad ........................................................................... 14
3.2 LEDs ............................................................................. 15
4.0 Function 16
4.1 Main Page ....................................................................... 16
4.2 Menu ............................................................................. 17
4.3 Sub Menu ........................................................................ 18
4.3.1 Measurement Menu ............................................................................................................18
4.3.2 Records Menu .....................................................................................................................18
4.3.3 Configuration Menu ............................................................................................................19
4.3.4 Protection G1 & G2 Menu ..................................................................................................22
4.3.5 Input Menu ..........................................................................................................................23
4.3.6 Output Menu .......................................................................................................................25
4.3.7 Communication Menu ........................................................................................................26
5.0 Password 27
6.0 Technical Data 28
6.1 Ratings ........................................................................... 28
6.2 Records .......................................................................... 29
6.3 Setting Ranges ................................................................... 29
6.4 Measurement Range ............................................................. 30
6.5 Accuracy ......................................................................... 31
6.6 Insulation Test ................................................................... 31
6.7 EMC Standard Test .............................................................. 31
6.8 Environmental Conditions ...................................................... 32
7.0 MODBUS Protocol 33
7.1 MODBUS Functions ............................................................ 33
7.2 MODBUS Register .............................................................. 36
7.3 MODBUS Mapping Format .................................................... 43
Table of Contents
4
Appendix A – IDMT Curves 45
Normal Inverse ...................................................................... 45
Very Inverse ......................................................................... 46
Normal Inverse 1.3/10 ............................................................... 47
Long-time Inverse ................................................................... 48
Extremely Inverse ................................................................... 49
5
5
1.0 Introduction
Introduction
Mikro X20 is designed to provide protection of one non-
directional earth-fault element. This element is connected to
protection current transformer that has 5A rated CT on
secondary part.
Mikro X20 provides the user with 2x16 LCD for displaying
its various measurement parameter such as: Current
Measurement, Fault Records, Event Records, Settings and
others.
The relay extends its connectivity by adopting the Modbus-
RTU protocol. Through the use of RS485 standard protocol,
the user will be able to network the relay with other slave
device that links to a center monitoring station.
Mikro X20 provides 2 configurable output relays that can be
activated by any of the protection functions available in the
relay. There is another output relay which is used for internal
fault indication. Besides that, Mikro X20 also provides 1
configuration logic input for various functions.
1.0 Introduction
6
1.1 Symbols and Definitions
In this manual and on the relay, unless the context otherwise
requires, the following symbols and abbreviations shall apply
throughout:
AC : Alternating Current
Alternating Current
ACK : Acknowledge
Acknowledge
Alrm : Alarm Alarm
CT : Current Transformer
Current Transformer
Chg : Change
CLPU : Cold Load Pickup
DC : Direct Current
Dmnd : Demand
EF : Earth Fault
Gentrl : General
IDMT : Inverse Definite
Minimum Time
Io/IN : Earth Fault Current
Invrse : Inverse
Ip : Input
IRF : Internal Relay
Failure
LED : Light Emitting
Diodes
OC : Overcurrent
OL : Overload
PU : Pickup
RCRD : Record
Rmote : Remote
Rst : Reset
Strt : Start
Thml : Thermal
7
7
1.2 Dimension of X20
96mm
96mm
125mm
105mm
Front
View
Side
View
8
2.0 Installation
Installation guide
Before installing the X20, please check that the environment
meets the following conditions:
- Operating temperature: -5°C to +55°C
- Humidity: 56 days at 93%, 40°C non-condensing
- Dust free environment away from electrical noise and
radiation.
2.1 Mounting
a) Insert the X20 through a 91mm x 91mm switch-gear panel
as shown below:
2.0 Installation
Panel
Cutout
91mm +/- 0.5mm
91mm +/- 0.5mm
9
9
b) Slide the retainer clip along the slots on both sides of the
X20 until the device is tightly secured on the switch-gear
panel. The retainer clip can be removed by lifting the tab
lightly at the handle end.
Retainer Clip
Slide the retainer
clips along upper
and bottom slots
10
c) There are two methods to open door cover, refer below:
Method 1:
Open cover from
right slot
Method 2:
Open cover from
left slot
Table des matières
Autres manuels Mikro Relais
Mikro
Mikro NX232A Manuel utilisateur
Mikro
Mikro MK2000 Manuel utilisateur
Mikro
Mikro MK204A Manuel utilisateur
Mikro
Mikro MK 3000L Manuel utilisateur
Mikro
Mikro NX300A Manuel utilisateur
Mikro
Mikro DIN330 Manuel utilisateur
Mikro
Mikro DIN310 Manuel utilisateur
Mikro
Mikro MK300A Manuel utilisateur
Mikro
Mikro DIN330 Manuel utilisateur
Mikro
Mikro X30 Manuel utilisateur
Mikro
Mikro MK231A Manuel utilisateur
Mikro
Mikro MK300A Manuel utilisateur
Mikro
Mikro NX231A Manuel utilisateur
Mikro
Mikro MK203A Manuel utilisateur
Mikro
Mikro RX330 Manuel utilisateur
Mikro
Mikro MK330A Manuel utilisateur
Mikro
Mikro DIN310C Manuel utilisateur
Mikro
Mikro MK300 Manuel utilisateur
Mikro
Mikro MPR500 Manuel utilisateur
Mikro
Mikro NX330A Manuel utilisateur
