METREL A 1398 PQA Manuel utilisateur

Iron Current Clamp

A 1398 PQA

Instruction manual

Version 1.1.1; Code No. 20 753 248

Distributor:

Manufacturer:

METREL d.d.

Ljubljanska cesta 77

1354 Horjul

Slovenia

web site: http://www.metrel.si

e-mail: metrel@metrel.si

Mark on your equipment certifies that it meets requirements of all subjected EU regulations

Hereby, Metrel d.d. declares that the A 1398 PQA is in compliance with subjected

EU directives. The full text of the EU declaration of conformity is available at the

following internet address https://www.metrel.si/DoC.

The trade names Metrel®, Smartec®, Eurotest®, Auto Sequence®are trademarks registered in Europe and

other countries.

No part of this publication may be reproduced or utilized in any form or by any means without

permission in writing from METREL.

A 1398 PQA Iron Current Clamp Table of contents

Table of contents

1General Description............................................................................................4

Typical applications ......................................................................................4

2Safety and operational considerations .............................................................5

Warnings and notes......................................................................................5

Standards applied.........................................................................................6

3Current clamp operation.....................................................................................7

4Inspection............................................................................................................8

5Cleaning...............................................................................................................8

6Service and Calibration ......................................................................................8

7Technical specifications.....................................................................................9

A 1398 PQA Iron Current Clamp General Description

1 General Description

The A 1398 PQA current clamps are designed for measuring alternating currents on insulated

conductors on low power installations: 50 mA ÷ 20 A. They are designed for Metrel Power Quality

Instruments MI 2893 / MI 2892 / MI 2885 / MI 2884 / MI 2883.

The current transducer is housed in a plastic case that maintains double insulation. Parts are

shown on figure bellow:

1) handles,

2) safety barrier,

3) conductor opening,

4) clamps jaw,

5) cable connection with connector.

Figure 1: A 1398 PQA current clamps

Typical applications

Power Quality Measurement

The A 1398 PQA current clamps have linear response through wide frequency bandwidth.

Therefore, they are well suited for:

–Power Quality auditing,

–EN 50160 or troubleshooting. Particularly for:

oCurrent distortion measurement

oInrush measurement

oFunctional testing of appliances, machines, etc.

High precision and measurement range up to 20A can cover most current measurements on the

secondary side of current transformer (CT) without opening of current circuit.

Energy and Power Measurement

The A 1398 PQA current clamps have small phase shift over wide frequency range. Therefore,

they are well suited for:

–Power and energy measurements (active, reactive, apparent)

–Power factor measurements

–Power/Energy efficiency

A 1398 PQA Iron Current Clamp Safety and operational considerations

2 Safety and operational considerations

Warnings and notes

In order to maintain the highest level of operator safety while carrying out various tests and

measurements Metrel recommends keeping your A 1398 PQA Iron Current Clamp in good

condition and undamaged. When using the A 1398 PQA, consider the following general warnings:

❑The symbol on the A 1398 PQA means »Read the Instruction manual with

special care for safe operation«. The symbol requires an action!

❑If the test equipment is used in a manner that is not specified in this Instruction

manual, the protection provided by the equipment might be impaired!

❑Adhere to local and national safety codes. Individual protective equipment must be

used to prevent shock and arc blast injury where hazardous live conductors are

exposed.

❑Before each use, inspect the A 1398 PQA Iron Current Clamp and its latching system

for any damage. Pay particular attention to the insulation surrounding the jaw. Look

for cracks or missing portions of the clamp housing or output cable insulation. Also

look for loose or weakened components. Don't use current sensor if the wear

indicator of the cable connection is visible.

❑Do not use a clamp that is cracked, damaged, or has a defective cable.

❑Do not use the A 1398 PQA Iron Current Clamp to measure bareconductors carrying

a voltage higher than 30 V ac rms or 42 V ac peak.

❑Never use the clamp on a circuit with voltages higher than 300 V CAT II (insulated

conductors).

❑De-energize the installation on which current will be measured or adopt safe

operating procedures during application and removal of the current clamp.

❑Use extreme caution when working around bare conductors or bus bars (follow the

requirements of EN 50191).

❑Do not apply around or remove from UNINSULATED HAZARDOUS LIVE

conductors, which may render electric shock, electric burn, or arc flash.

A 1398 PQA Iron Current Clamp Safety and operational considerations

Markings on the A 1398 PQA:

Symbol

Description

Read the Instruction manual with special care to safety operation«.

The symbol requires an action!

Do not apply around or remove from HAZARDOUS LIVE conductors.

Mark on your equipment certifies that it meets requirements of all

subjected EU regulations.

This equipment should be recycled as electronic waste.

Standards applied

The A 1398 PQA Iron Current Clamp is manufactured and tested in accordance with the following

regulations:

Electromagnetic compatibility (EMC)

EN 61326 - 1

Electrical equipment for measurement, control and laboratory use

–EMC requirements –Part 1: General requirements

EN 61326 - 2 - 2

Electrical equipment for measurement, control and laboratory use

–EMC requirements –Part 2-2: Particular requirements - Test

configurations, operational conditions and performance criteria for

portable test, measuring and monitoring equipment used in low-

voltage distribution systems

Safety (LVD)

EN 61010 - 1

Safety requirements for electrical equipment for measurement,

control and laboratory use –Part 1: General requirements

EN 61010 - 2 - 032

Safety requirements for electrical equipment for measurement,

control and laboratory use –Part 2-032: Particular requirements for

hand-held and hand-manipulated current sensors for electrical test

and measurement

Note about EN and IEC standards:

❑Text of this manual contains references to European standards. All standards of EN

6XXXX (e.g. EN 61010) series are equivalent to IEC standards with the same number

(e.g. IEC 61010) and differ only in amended parts required by European harmonization

procedure.

A 1398 PQA Iron Current Clamp Current clamp operation

3 Current clamp operation

Step 1

Connect A 1398 PQA Iron Current Clamps to the desired input on the measuring instrument.

Step 2

Clamp the probe around the insulated current-carrying conductor(s) to be measured. Make

sure that probe jaws are tightly closed around the conductor(s). In the case of measuring

current near live, naked conductor(s), remove electrical power from wires, before clamping

(follow the requirements of EN 50191).

Figure 2: Current clamps A 1398 PQA - connection to the measuring instrument

Step 3

Select Phase and Neutral clamps to Smart Clamp in Connection setup menu on your

instrument.

Step 4

Observe the current value and waveform on the instrument’s display.

A 1398 PQA Iron Current Clamp Inspection, Cleaning, Service & Calibration

4 Inspection

To maintain operator safety and ensure reliability of the A 1398 PQA Iron Current Clamp, it is

good practice to inspect it on a regular basis. Check that the enclosure and optional connection

are without defects such as scratches or breaks.

Jaw surface must be clean. Pollution on jaw surfaces reduces the current clamp sensitivity.

5 Cleaning

No special maintenance is required for the housing. To clean the surface of the A 1398 PQA use

a soft cloth slightly moistened with soapy water or alcohol. Then leave the A 1398 PQA to dry

totally before use.

Warnings:

❑Do not use liquids based on petrol or hydrocarbons!

❑Do not spill cleaning liquid over the A 1398 PQA!

6 Service and Calibration

It is essential that your clamp is regularly calibrated in order to guarantee the technical

specification listed in this Instruction manual. We recommend 2-year calibration interval. Metrel

encloses an original calibration certificate with every new instrument and clamp.

For recalibration and repairs under or out of warranty time please contact your distributor for

further information.

Warning:

❑Only a competent, authorized person is allowed to carry out service intervention!

A 1398 PQA Iron Current Clamp Technical specifications

7 Technical specifications

Nominal current (INom)...................................10 A

Nominal current range ..................................5 % INom … 200 % INom

Maximal current (IMax) ...................................20 A

Crest factor @ Nominal current....................4,0

Peak current ..................................................40 A

Bandwidth .....................................................40 Hz …400 Hz

Uncertainty....................................................±(0,5 % of reading ±10 mA)

Phase Error ....................................................±≤0,45°(50 –60 Hz)

External fields................................................30 A/m (No influence)

Continuity of measurements.........................20 A (continuous)

30 A (40 min / 20 min intermitted)

Dimensions & Mechanical data:

Current sensor type.......................................D

Length of connection cable ...........................1,2 m

Jaw opening...................................................13 mm

Maximum conductor sizes.............................fi < 13 mm

Length of connection cable ...........................1,2 m

Dimensions (W x H x L)..................................27 mm x 52 mm x 170 mm

Weight ..........................................................340 g

Safety specification:

Over-voltage category...................................No CAT, (can be used on insulated conductors in 300 V CAT II)

Pollution degree ............................................2

Degree of protection.....................................IP 40

EMC:

Emission.........................................................Class B

Immunity .......................................................Portable equipment

Environment conditions:

Working temperature range .........................-10 °C … 50 °C

Storage temperature range...........................-20 °C … 60 °C

Humidity range..............................................0 %RH …80 %RH

Reference temperature range.......................25 C ± 5 C @ 40 %RH …60 %RH

Altitude..........................................................up to 2000 m

Operation ......................................................Indoor use

Substitute Electric Model for A 1398 PQA Iron Current Clamp

Equivalent circuit diagram for current clamp measurement:

Instrument

1:2500

Figure 3: A 1398 PQA Iron Current Clamp - block diagram

Symbols on circuit diagrams have following meaning:

Measured (AC) current, primary current

Secondary transformer current

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