HT instruments XL422 User Manual
ENGLISH
User’s manual
©Copyright HT ITALIA 2007 Release EN 1.02 - 13/06/2007
XL421 - XL422
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 INSTRUMENT DESCRIPTION..................................................................................................................... 6
4.1 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 pla nt.......................................................................................................7
6.2 Using the instrument in a Three Phase pl ant........................................................................................................9
7 LED MESSAGES DESCRIPTION...............................................................................................................11
8 CONNECTION OF INSTRUMENT TO PC..................................................................................................11
9 MAINTENANCE ..........................................................................................................................................12
9.1 General information.............................................................................................................................................12
9.2 Battery replacement............................................................................................................................................12
9.3 Cleaning............................................................................................................................... ...............................12
9.4 End of life............................................................................................................................................................12
10 TECHNICAL SPECIFICATIONS .................................................................................................................13
10.1 Characteristics....................................................................................................................................................13
10.1.1 Safety standards...........................................................................................................................................................13
10.1.2 General data.................................................................................................................................................................13
10.2 Environmental conditions....................................................................................................................................13
10.2.1 Climatic conditions........................................................................................................................................................13
10.2.2 EMC..............................................................................................................................................................................13
10.3 Accessories.........................................................................................................................................................14
11 SERVICE.....................................................................................................................................................14
11.1 Warranty conditions............................................................................................................................................14
11.2 After-sale service................................................................................................................................................14
EN - 1
XL421 - XL422
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
De-energize the plant under test before connecting the instrument
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 CURRENT measurements up to 2500A on installations with
overvoltage category CAT III 1000V∼ to ground or CAT IV 600V∼ to ground.
) Please use the standard safety precautions aimed at:
9 Protecting you against dangerous electric currents.
9 Protecting the instrument against incorrect operations.
) Do not test circuits exceeding the current and voltage limits.
) 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
XL421 - XL422
1.2 DURING USE
Carefully read the following 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 current measurement keep the clamp as far as possible from cables not
involved in measurement.
) During a current measurement keep the cable under test in the very middle of the jaws.
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
XL421 - XL422
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 1000V∼ to ground or CAT
IV 600V∼ to ground.
2.2 FUNCTIONS
This manual is referred to two models: XL421 and XL422. XL421 can recording a single
Current in single phase or three phase plant. XL422 can recording up to 3 Currents
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 XL421 – Autonomy (days) XL422 – 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
Measuring Interval.
EN - 4
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