Mikro X30 Manual de usuario

COMBINED OVERCURRENT

& EARTH FAULT RELAY

Ver 1.00

Table of Contents

1.0 Introduction 5

1.1 Symbols and Definitions ......................................................... 6

1.2 Dimension of X30 ................................................................ 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 ................................................................................................................... 19

4.3.3 Configuration Menu .......................................................................................................... 20

4.3.4 Protection G1 & G2 Menu ................................................................................................ 23

4.3.5 Input Menu ........................................................................................................................ 25

4.3.6 Output Menu ..................................................................................................................... 27

4.3.7 Communication Menu ...................................................................................................... 29

5.0 Password 30

6.0 Technical Data 31

6.1 Ratings .......................................................................... 31

6.2 Records ......................................................................... 32

6.3 Setting Ranges .................................................................. 32

6.4 Measurement Range ............................................................ 34

6.5 Accuracy ........................................................................ 35

6.6 Insulation Test .................................................................. 36

6.7 EMC Standard Test ............................................................. 36

6.8 Environmental Conditions ..................................................... 37

7.0 MODBUS Protocol 38

7.1 MODBUS Functions ........................................................... 38

7.2 MODBUS Register ............................................................. 41

7.3 MODBUS Mapping Format ................................................... 50

Table of Contents

Appendix A – Application and Formula 52

Circuit Breaker Failure Protection ................................................. 52

Thermal Overload Protection ...................................................... 53

Trip Circuit Supervision ............................................................ 56

Appendix B – IDMT Curve 60

Normal Inverse ..................................................................... 60

Very Inverse ........................................................................ 61

Normal Inverse 1.3/10 .............................................................. 62

Long-time Inverse .................................................................. 63

Extremely Inverse .................................................................. 64

1.0 Introduction

Introduction

Mikro X30 is designed to provide protection of 3

independent phase overcurrent elements and one non-

directional earth-fault element. All these elements are

connected to protection current transformers that have 5A

rated CT on secondary part.

As the name suggest, Mikro X30 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 X30 provides 2 configurable output relays that can be

activated by any of the protection functions available in the

relay. These output relays are able to be selected for internal

fault indication. Besides that, Mikro X30 also provides 1

configuration logic input for various functions.

1.0 Introduction

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

ACK : Acknowledge

Alrm : Alarm

CT : Current Transformer

CBFP : Circuit Breaker

Failure Protection

Chg : Change

CLPU : Cold Load Pickup

DC : Direct Current

Dmnd : Demand

EF : Earth Fault

Gentrl : General

IDMT : Inverse Definite

Minimum Time

IL1 : Phase 1 current

IL2 : Phase 2 current

IL3 : Phase 3 current

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

TCS : Trip Circuit

Supervision

Thml : Thermal

1.2 Dimension of X30

96mm

125mm

105mm

Front

View

Side

View

2.0 Installation

Installation guide

Before installing the X30, 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 X30 through a 91mm x 91mm switch-gear panel

as shown below:

2.0 Installation

Panel

Cutout

91mm +/- 0.5mm

b) Slide the retainer clip along the slots on both sides of the

X30 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

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

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