MPB CCM Manual de usuario

MPB S.r.l.

Via Giacomo Peroni 400/402

00131 Rome - Italy

Tel +39 0641200744

Fax +39 0641200653

[email protected]

www.gruppompb.uk.com

CCM user manual V. 1.15

User manual

CCM

Contact Current Meter

Updated to Firmware Version:

CCM V.1.09

USER MANUAL

CCM

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SAFETY NOTES

Read carefully before using the product

MPB works to provide its customers with the best safety conditions available,

complying with the current safety standards. The instrumentation described in this

manual has been produced and tested in conditions that fully comply with the

European standards. To maintain it in safe conditions, ensure the correct use of the

product and prevent any danger, these general instructions must be fully understood

and applied before any use.

This product is intended for industrial environments and laboratories and should be

used by authorized personnel only. The CCM was designed and developed to be

used according to the norms and regulations of the country where the worker is

operating in.

Please use the device onlyafter checking the presence and validity of the safety

devices (e.g. breakers, differential switches and the conformity of the

grounding).

MPB disclaims any responsibility for a different use of the device.

For safety reasons, the GROUND PLANE mode measurement (whose explanation

will be detailed in the following chapters) MUST always be done before the HAND

mode measurement. The GROUND PLANE mode measurement shall not exceed the

limits defined by the 2013/35/EU regulation (CCM-A version) or 2004/40/EC (for the

CCM version) and must be performed ONLY with the cover provided with the

instrument. Please also note that even when in GROUND PLANE mode, total safety

is not guaranteed if the use of the instrument is notmade according to the instructions

explained in this manual. All these procedures will be better underlined below.

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Declaration of conformity

(according to EMC 89/336/EEC directive and low voltage 73/23/EEC)

This is to certify that the product: CCM

(Contact Current Meter)

complies with the following European Standards:

Safety: CEI EN 61010-1 (undated reference, applies to all editions)

EMC: EN 61326-1 (undated reference, applies to all editions)

This product complies with the essential requirements of the Low Voltage Directive

2014/35/EU, EMC directive 2014/30/EU and with the RoHs Directive 2011/65/EU.

MPB S.r.l.

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Index

1. General information..................................................................................................................- 6 -

1.1. Introduction.......................................................................................................................- 6 -

1.2. Description.........................................................................................................................- 6 -

1.3. Composition.......................................................................................................................- 6 -

1.3.1. Standard configuration..............................................................................................- 6 -

1.3.2. Optional kit................................................................................................................- 7 -

1.3.3. Optional Item.............................................................................................................- 7 -

1.4. Front ..................................................................................................................................- 7 -

1.5. Rear....................................................................................................................................- 7 -

1.6. Technical specification.......................................................................................................- 8 -

2. Principle of operation................................................................................................................- 9 -

2.1. Logic schema .....................................................................................................................- 9 -

2.2. Measurements...................................................................................................................- 9 -

2.3. Contact current..................................................................................................................- 9 -

2.4. Safety...............................................................................................................................- 10 -

3. Option......................................................................................................................................- 11 -

3.1. Display all the values in the three bands.........................................................................- 11 -

3.2. Auto measure and store..................................................................................................- 11 -

3.3. Enable the option ............................................................................................................- 12 -

4. CCM usage...............................................................................................................................- 13 -

4.1. Turn on ............................................................................................................................- 13 -

4.2. First use ...........................................................................................................................- 13 -

4.3. Standby screen ................................................................................................................- 15 -

4.4. Hand or GP.......................................................................................................................- 15 -

4.5. Bandwith / Total..............................................................................................................- 16 -

4.6. Built-in self-test ...............................................................................................................- 17 -

4.7. CCM menu.......................................................................................................................- 19 -

4.7.1.Regulation limits.............................................................................................................- 19 -

4.7.2.Beep on press .................................................................................................................- 20 -

4.7.3.Alarm ..............................................................................................................................- 20 -

4.7.4. Auto off..........................................................................................................................- 21 -

4.7.5. Data & Time...................................................................................................................- 22 -

4.7.6. Contrast .........................................................................................................................- 22 -

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4.7.7. Clear data ...................................................................................................................... - 23 -

4.8. Auto read......................................................................................................................... - 23 -

5. Data Download........................................................................................................................ - 26 -

5.1. Connect to PC.................................................................................................................. - 26 -

5.2. Data Format .................................................................................................................... - 27 -

6. JIG –General information ....................................................................................................... - 28 -

6.1. Introduction .................................................................................................................... - 28 -

6.2. Description ...................................................................................................................... - 28 -

6.3. Composition .................................................................................................................... - 28 -

6.4. Kit case ............................................................................................................................ - 29 -

7. Jig –Functioning...................................................................................................................... - 30 -

7.1. Equipment....................................................................................................................... - 30 -

7.2. Install the CCM on the JIG............................................................................................... - 30 -

7.3. “Ground Plane” test........................................................................................................ - 31 -

7.4. “Hand” test...................................................................................................................... - 32 -

7.5. Certificate measurements............................................................................................... - 33 -

7.5.1.Low band........................................................................................................................ - 33 -

7.5.2.Medium band................................................................................................................. - 34 -

7.5.3.High band ....................................................................................................................... - 34 -

8. Software update...................................................................................................................... - 35 -

7.6. Instruction for Firmware upgrade................................................................................... - 35 -

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1.General information

1.1. Introduction

CCM was designed to measure in a fast and accurate way the contact current that

may be generated when touching electrical/electronic equipment inside a radio

frequency field.

1.2. Description

CCM (Figure 1-1. CCM) is a portable measuring device with two measurement

modes. It can measure by means of the GROUND PLANE (with related cover to wrap

the instrument and resistance for closing the circuit on the ground), and it can work

without a cable, makinguse of the impedance level of the user through the conductive

area on the handle. In the next chapters we will go more deeply into this subject.

Figure 1-1. CCM

1.3. Composition

1.3.1.Standard configuration

Rigid Case

CCM

1,5 V Batteries (2 pcs.)

RG316 Cable (length 3 m) sma(M) sma(M)

Body Simulation Impedance (Z-2251)

Ground Plane plate (dimensions 360 X 239 mm)

Ground Plane Cover

USB Cable for PC Connection

USB Key with:

User Manual

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- Data Sheet

- Calibration Certificate

1.3.2.Optional kit

CCM-JIG Kit, including:

Calibration JIG

Standard resistance (R45)

Cable (length 1 m) N(M) sma(M)

1.3.3.Optional Item

IEC-60990 Body Simulation Impedance

1.4. Front

In Figure 1-2 is shown the CCM front panel:

Figure 1-2. CCM front

1.5. Rear

In Figure 1-3 is shown the CCM rear panel:

Figure 1-3. CCM rear

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1.6. Technical specification

Frequency Range

Low band

Medium band

High band

40 Hz to 2.5kHz

2.5 kHz to 100 kHz

100 kHz to 110 MHz (CCM);

100 khz to 10 MHz (CCM-A)

Frequency Response

Low band @ 1 mA

Medium band @ 100%

High band @ 20 mA

< ± 1.5 dB

Measurement range

Low band

Level range

Damage level

Resolution

Dynamic range @ 500 hz

Linearity error @ 500 Hz; 0.3…3 mA

Medium band

Level range

Damage level

Resolution

Dynamic range @ 25 kHz

Linearity error @ 25 kHz; 10…200%

High band (CCM:100kHz…110MHz;CCM-A:100 kHz…10MHz)

Level range

Damage level

Resolution

Dynamic range @ 10 MHz

Linearity error @ 10MHz; 12…120 mA

0.01…3 mA (ICNIRP limit 1mA)

100 mA

1 nA

50 dB

< ± 1 dB

1…300%

(ICNIRP limit 1…40mA)(Ty)

500%

1 nA

50 dB

< ± 1 dB

0.4..120mA (ICNIRP limit 40mA)

300 mA

10 nA

50 dB

< ± 1 dB

Input signal attenuation

20 MHz -> 7 dB

30 MHz -> 18 dB

40 MHz -> 31 dB

100 MHz… 3 GHz -> 45 dB

Input signal attenuation (CCM-A)

20 MHz -> 7 dB

30 MHz -> 18 dB

40 MHz -> 31 dB

100 MHz… 3 GHz -> 45 dB

Measurement mode

Hand and Ground Plane

Alarm sound

Programmable level

Display

Graphic LCD with led backlight

Detectors

RMS

Contact tip

Interchangeable

USB Interface

Micro USB connector

Standards

Directive 2004/40/EC (CCM);

Directive 2013/35/EU (CCM-A)

Operating Temperature

+10 °C to +40 °C

Power supply

Battery

2pcs AA Alkaline

Operation

48 hours

Dimension

205 x 90 x 45 [mm]

Weight

200 g

Recommended calibration interval

24 months

Built-in self-test

Safety front-end functionality test

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2.Principle of operation

2.1. Logic schema

The schema shown in Figure 2.1 describes the CCM work flow:

Figure 2-1. CCM block diagram

2.2. Measurements

The CCM digital nature allows it to measure contact currents through the true RMS

(Root Mean Square) value for all analog signals from 40Hz. The RMS value of a

waveform signal is equal to a DC current which provides the same power to the load.

The signal measured bythe TIP passes through the most suitable filter (Low, Medium

and High), then arrives to the true RMS detector, that makes a conversion of the

measured current to RMS. The equation is the following:

 

 󰇟󰇛󰇜󰇠





The actual regulations defines the minimum requirements for the safety of workers in

areas of risk, and the limit values for the exposure to contact current.

2.3. Contact current

The contact current flows when a person or an object serve as electrical conductors

when reaching another metallic object immersed in an electromagnetic field: the

contact current is expressed in Amperes. The moment right after the contact can imply

a discharge of associated currents (First attachment of 2013/35/EU). In the

workplace, as well as in the world we live in, the electric and magnetic fields are

always present and can have natural or artificial origin. The natural electric fields are,

for example, those produced by the accumulation of electric charges during a

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lightning, while the natural magnetic fields are those that are found in nature, such as

the terrestrial one that orients the compass needle North-South.

The electric and magnetic artificial fields are produced by artificial devices and

systems, such as electrical equipment or systems for the distribution of electricity. The

electromagnetic field can be defined as a physical phenomenon resulting from the

simultaneous presence of an electric field and a magnetic field. Moving from the

source of the electromagnetic field, the waves decrease in intensity, it is therefore

clear that the intensity is maximum if there is a contact with the object or with the

system which is generating the electromagnetic field. A device with metallic shell, if

immersed in an electromagnetic field, can become a RF voltage carrier and can

accumulate electrical charges. If you come into contact with the device without

adequate protection, you can risk that the RF voltage discharges to ground flowing

through the limbs and the body. In this case, the electrical charges on the device,

immersed in the electric field through the operator's body, have generated a contact

current. An electrical equipment not properly shielded can emit electromagnetic

waves. When coming into contact with that machinery without adequate protection,

even in this case there is a risk that the electromagnetic waves, flowing through the

limbs and the operator's body, can generate a contact current.

2.4. Safety

The GP measurement mode has only been developed for safety reasons, since it

does not guarantee reliable measurements. For the operator's safety and security it

is absolutely mandatory to make sure that, when performing GP measurements, the

cover provided with the instruments wraps it like in the picture below, the plate is set

in the same position as the operator's and the impedance is connected to the plate

connector and not to the CCM. For more details please scroll down to 4.4.

Figure 2-2. GP cover

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