HT instruments XL424 User Manual

ENGLISH

User’s manual

©Copyright HT ITALIA 2005 Release EN 1.00 - 03/10/2005

XL423 - XL424

INDEX

1. SAFETY PRECAUTIONS AND PROCEDURES.......................................................................................... 2

1.1 Preliminary instructions.........................................................................................................................................2

1.2 During use.............................................................................................................................................................3

1.3 After use................................................................................................................................................................3

1.4 Overvoltage categories - definitions......................................................................................................................3

2 GENERAL DESCRIPTION........................................................................................................................... 4

2.1 Introduction...........................................................................................................................................................4

2.2 Functions..............................................................................................................................................................4

3 PREPARATION FOR USE........................................................................................................................... 5

3.1 Preliminary checks................................................................................................................................................5

3.2 Power supply ........................................................................................................................................................5

3.3 Calibration.............................................................................................................................................................5

3.4 Storage.................................................................................................................................................................5

4 OPERATING INSTRUCTIONS..................................................................................................................... 6

4.1 Instrument description...........................................................................................................................................6

4.2 Keyboard...............................................................................................................................................................6

5 INITIAL SETTINGS....................................................................................................................................... 6

5.1 Date, Time and Measuring Interval.......................................................................................................................6

6 MEASURING PROCEDURE........................................................................................................................ 7

6.1 Using the instrument in a Single Phase plant .......................................................................................................7

6.2 Using the instrument in a Three Phase 4-wires plant............................................................................................9

6.3 Using the instrument in a Three Phase 3-wires plant..........................................................................................11

7 LED MESSAGES DESCRIPTION...............................................................................................................13

8 CONNECTION OF INSTRUMENT TO PC..................................................................................................13

9 MAINTENANCE ..........................................................................................................................................14

9.1 General information.............................................................................................................................................14

9.2 Battery replacement............................................................................................................................................14

9.3 Cleaning..............................................................................................................................................................14

9.4 End of life............................................................................................................................................................14

10 TECHNICAL SPECIFICATIONS .................................................................................................................15

10.1 Characteristics....................................................................................................................................................15

10.1.1 Safety standards...........................................................................................................................................................15

10.1.2 General data.................................................................................................................................................................15

10.2 Environmental conditions....................................................................................................................................15

10.2.1 Climatic conditions........................................................................................................................................................15

10.2.2 EMC..............................................................................................................................................................................15

10.3 Accessories.........................................................................................................................................................16

11 SERVICE.....................................................................................................................................................16

11.1 Warranty conditions............................................................................................................................................16

11.2 After-sale service................................................................................................................................................16

EN - 1

XL423 - XL424

1. SAFETY PRECAUTIONS AND PROCEDURES

This meter has been designed in compliance with EN 61010 directive. For your own safety
and to avoid damaging the instrument we suggest you follow the procedures hereby

prescribed and to read carefully all the notes preceded by the symbol .

Should you fail to keep to the prescribed instructions you could damage the
instrument and/or its components or endanger your safety.

Take extreme care of the following conditions while taking measurements:

 Do not performing any measures in humid or wet environments.
 Do not use the meter in presence of explosive gas (material), combustible gas

(material), steam or dust.

 Do not touch the circuit under test if no measurement is being taken.
 Do not use the instrument if it seems to be malfunctioning (i.e. if you notice

deformations, breaks, leakage of substances and so on).

The herewith symbols are used:

Caution: refer to the instruction manual; an improper use may damage the
instrument or its components

WARNING

Danger high voltage: risk of electrical shocks

Double insulated meter
AC voltage and current

1.1 PRELIMINARY INSTRUCTIONS

 This instrument has been designed for use in environments of pollution degree 2 up to

2000m high.

 It can be used for VOLTAGE measurements up to 600V AC on installations with

overvoltage category CAT III 600V~ between the inputs and to ground.

 Please use the standard safety precautions aimed at:

 Protecting you against dangerous electric currents.

 Protecting the instrument against incorrect operations.
 Do not test circuits exceeding the voltage limits.
 If possible de-energize the plant under test before connecting the instrument. Take all

the safety precautions before taking actions on the plant.
 Do not perform any test under environmental conditions exceeding the limits indicated

in this manual (ref. par. 10.2).

 Make sure that batteries are correctly installed.
 Only the accessories supplied with the instrument guarantee compliance with the

safety standards. They must be in good conditions and must be replaced, if necessary,

with identical models.

EN - 2

XL423 - XL424

1.2 DURING USE

Carefully read the herewith recommendations and instructions:

WARNING

• Non compliance with warnings and/or instructions may cause damage to
the tester or its components or injure the operator.

• During a measurement never touch any unused terminal.

1.3 AFTER USE

 If you expect not to use the instrument for a long period of time remove the batteries

and strictly follow the indications at paragraph 9.2.

1.4 OVERVOLTAGE CATEGORIES - DEFINITIONS

EN 61010-1 (Safety requirements for electrical equipment for measurement, control and
laboratory use, Part 1: General requirements) defines what a measurement category
(usually called “overvoltage category”) is. At paragraph 6.7.4: Measuring circuits it says:

(OMISSIS)
Circuits are divided into the following measurement categories:

• Measurement category IV is for measurements performed at the source of low
voltage installations.

Examples are electricity meters and measurements on primary overcurrent protection devices
and ripple control units.

• Measurement category III is for measurements performed in the building
installation.

Examples are measurements on distribution boards, circuit breakers, wiring,
including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some other equipment, for
example, stationary motors with permanent connection to fixed installation.

• Measurement category II is for measurements performed on circuits directly
connected to the low voltage installation.

Examples are measurements on household appliances, portable tools and similar
equipment.

• Measurement category I is for measurements performed on circuits not directly
connected to MAINS.

Examples are measurements on circuits not derived from MAINS, and specially
protected (internal) MAINS-derived circuits. In the latter case, transient stresses are
variable; for that reason, the norm requires that the transient withstand capability of
the equipment is made known to the user.

EN - 3

XL423 - XL424

2 GENERAL DESCRIPTION

2.1 INTRODUCTION

Dear Customer, the instrument you have just purchased will grant you accurate and
reliable measurements provided that it is used according to the present manual’s
instructions.

The instrument was designed to grant the user the utmost safety conditions thanks to a
new concept assuring double insulation and overvoltage CAT III 600V~ between inputs
and to ground.

2.2 FUNCTIONS
This manual is referred to two models: XL423 and XL423. XL423 can recording a single
voltage in single phase or three phase plant. XL424 can recording up to 3 voltages

simultaneously in single phase or three phase plant.
Where not expressly indicated the characteristics are common for both models.
The meter can monitoring a plant for a long time thanks to a sophisticated memory-

managing algorithm. More exactly, the instrument uses the following sampling periods:

Measuring Interval XL423 – Autonomy (days) XL424 – Autonomy (days)

1s 5 1.5
6s 34 8

30s 170 42
1min 364 (*) 91
5min 1820 (*) 455 (*)

(*) Depending on batteries autonomy

The instrument starts each recording using the Measuring Interval set through PC
DATALINK software (see chapter 8). Just before the event of full memory, the instrument
applies the successive measuring Interval to all the memory, thus getting more free
memory locations. The instrument continues the data storing according to the new
sampling period.

EN - 4

XL423 - XL424

3 PREPARATION FOR USE

3.1 PRELIMINARY CHECKS

This instrument has been checked mechanically and electrically before shipment. All
precautions have been taken to assure that the instrument reaches you in perfect
condition.

However, it is advisable to carry out a rapid check in order to detect any possible damage,
which might have occurred in transit.

Check the accessories contained in the packaging to make sure they are the same as
reported in chapter 11.

3.2 POWER SUPPLY

The instrument is powered by two 1.5V type LR6 AA AM3 MN1500 alkaline batteries. For
battery life see paragraph 10.1.2. For battery fitting operation procedure please see
paragraph 9.2.

• The meter, after fitted batteries, is always continuously ON also if STATUS
and ALARM LED are OFF. Pressing of START/STOP key activate or disable
recordings only.

• During a recording the blinking ALARM LED every 3 seconds means a low
battery status.

3.3 CALIBRATION

The instrument complies with the accuracy specifications listed in this manual and such
compliance is guaranteed for 12 months, afterwards the tester may need recalibration.

3.4 STORAGE

In order to guarantee the accuracy of the measurements, after a period of storage in
extreme environmental conditions wait for the instrument to stabilize to within the listed
operating conditions (see paragraph 10.2).

WARNING

EN - 5