Brymen BM079 Manuale utente

USER'S MANUAL

BM079 & BM078 DC+AC

BM077 DC/AC

BM076, BM073 & BM072 AC

Clamp-on Multimeter Series

1) SAFETY

This manual contains information and warnings that must be followed for operating the

instrument safely and maintaining the instrument in a safe operating condition. If the

instrument is used in a manner not specified by the manufacturer, the protection

provided by the instrument may be impaired.

The meter protection rating, against the users, is double insulation per

UL/IE /EN61010-1 Ed. 3.0, IE /EN61010-2-033 Ed. 1.0, AN/ SA 22.2 No. 61010-

1 Ed. 3.0, IE /EN61010-2-032 Ed. 3.0 & IE /EN61010-031 Ed. 1.1:

Measurement ategory III 600V & ategory IV 300V A & D .

Per IEC61010-1 (2010) OVERVOLTAGE CATEGORY

OVERVOLTAGE CATEGORY ll (CAT II) is for equipment intended to be supplied

from the building wiring. It applies both to plug-connected equipment and to

PERMANENTLY ONNE TED EQUIPMENT.

OVERVOLTAGE CATEGORY lll (CAT III) is for equipment intended to form part of a

building wiring installation. Such equipment includes socket outlets, fuse panels, and

some MAINS installation control equipment.

OVERVOLTAGE CATEGORY lV (CAT IV) is for equipment installed at or near the

origin of the electrical supply to a building, between the building entrance and the main

distribution board. Such equipment may include electricity tariff meters and primary

overcurrent protection devices.

TERMS IN THIS MANUAL

WARNING identifies conditions and actions that could result in serious injury or even

death to the user.

CAUTION identifies conditions and actions that could cause damage or malfunction

in the instrument.

WARNING

To reduce the risk of fire or electric shock, do not expose this product to rain or

moisture. The meter is intended only for indoor use.

To avoid electrical shock hazard, observe the proper safety precautions when working

with voltages above 60 VD or 30 VA rms. These voltage levels pose a potential

shock hazard to the user. Before and after hazardous voltage measurements, test the

voltage function on a known source such as line voltage to determine proper meter

functioning.

Keep your hands/fingers behind the hand/finger barriers (of the meter and the test

leads) that indicate the limits of safe access of the hand-held part during measurement.

Inspect test leads, connectors, and probes for damaged insulation or exposed metal

before using the instrument. If any defects are found, replace them immediately. Only

use the test lead provided with the equipment or UL Listed Probe Assembly rated AT

III 600V or better.

This lamp-on meter is designed to apply around or remove from uninsulated

hazardous live conductors. But still, individual protective equipment must be used if

hazardous live parts in the installation where measurement is to be carried out could

be accessible.

CAUTION

Disconnect the test leads from the test points before changing meter functions.

INTERNATIONAL ELECTRICAL SYMBOLS

aution ! Refer to the explanation in this Manual

aution ! Risk of electric shock

Earth (Ground)

Double Insulation or Reinforced insulation

Fuse

A --Alternating urrent

D --Direct urrent

Application around and removal from hazardous live conductors is permitted

2) CENELEC irectives

The instruments conform to ENELE Low-voltage directive 2006/95/E and

Electromagnetic compatibility directive 2004/108/E

3) PRO UCT ESCRIPTION

This user's manual uses only representative model(s) for illustrations. Please refer

specification details for function availability to each model.

1) Antenna area for Non- ontact

EF-Detection

2) Jaw center indicator (with D A

polarity for Models 079, 078 &

077), at where best current

accuracy is specified

3) Rotary Selector to turn the

power ON/OFF and Select a

function

4) 3-5/6 digits 6000 counts numeric

L D display

5) Additional input Jack for Phase

Rotation function only

6) Input Jack for all functions

EX EPT non-invasive D A,

D +A A, or A A current

functions

7) ommon (Ground reference)

Input Jack for all functions

EX EPT non-invasive D A,

D +A A, or A A current functions

8) Push-buttons for special

functions & features.

9) Jaw trigger for opening the

clamp jaw

10) Hand/Finger Barrier to indicate

the limits of safe access of the

meter

11) lamp Jaw for D or A

current magnetic field pick up

12) Additional center indicator for AmpTipTM Low-current function, at where best

AmpTipTM current accuracy is specified

4) OPERATION

WARNING: Before and after hazardous voltage measurements, test the voltage

function on a known source such as line voltage to determine proper meter functioning

ACV, CV, C+ACV (Models 078 & 079 only), Line-level Hz, & EF (NCV) functions

Inputs, other than that of EF as described below, are made through the test lead

terminals COM/+. Defaults at ACV* Function. Press SELECT button momentarily to

select CV, C+ACV, Line-level Hz or EF** (N V) function in sequence.

Note:

*ACV (and hence AC+ CV & Line-level Hz) function is equipped with digital low-pass

filter, and is capable of dealing with VF (Variable Frequency Drives) signals. It also

improves A V reading stability in noisy electrical environments.

**For Models 073 & 072, EF (N V) function is designed in an independent rotary

switch position

Electric Field EF-Detection

The meter displays “EF” when it is ready. Signal strength is indicated as a series of

bar-graph segments on the display together with variable beep tones.

●Non- ontact EF-Detection: An antenna is located along the top-right end of the

stationary clamp jaw, which detects electric field surrounds energized conductors. It is

ideal for tracing live wiring connections, locating wiring breakage and to distinguish

between live or earth connections.

●Probe- ontact EF-Detection: For more precise indication of live wires, such as

distinguishing between Live and Ground connections, use one single probe to test via

terminal COM for direct contact EF-Detection with best sensitivity.

CAUTION & WARNING for Non-Invasive (Clamp-on) Current Measurements:

CAUTION

(Application and Removal of the Clamp-on Jaws) For non-invasive current

measurements, press the jaw trigger and clamp the jaws around conductor(s) of only

one single pole of a circuit for load current measurement Make sure the jaws are

completely closed, or else it will introduce measurement errors Enclosing conductor(s)

of more than one pole of a circuit may result in differential current (like identifying

leakage current) measurement Align the conductor(s) to the Jaws center indicators

(Regular or AmpTip™ indicators where applicable) as

much as possible to get the best

measuring accuracy For removal, press the jaw trigger and remove the jaws from the

conductor(s)

Adjacent current-carrying devices such as transformers, motors and conductor wires

may affect measurement accuracy Keep the jaws away from them as much as

possible to minimize influence

WARNING

Do not use the meter to measure currents above the rated frequency (400Hz)

Circulating currents may cause the magnetic circuits of the Jaws reach a hazardous

temperature

Non-Invasive AmpTipTM Low-Current Functions:

ACA, CA (Models 079, 078 & 077 only), C+ACA (Models 079 & 078 only), & Hz

Input is made via the clamp jaws with best accuracy specified near the jaw tip area for

small conductors low-current measurements. Defaults at ACA function. Press SELECT

button momentarily to select the subject functions in sequence.

Non-Invasive Regular Current Funtions:

ACA, CA (Models 079, 078 & 077 only), C+ACA (Models 079 & 078 only), & Hz

Input is made via the clamp jaws with best accuracy specified at the jaw center for

regular current measurements. Press SELECT button momentarily to select the

subject functions in sequence.

Ω

ΩΩ

Ω Resistance, Continuity, & iode functions

Inputs are made through the test lead terminals COM/+. Defaults at Ω

ΩΩ

Ω Resistance.

Press SELECT button momentarily to select the subject functions in sequence.

Note

When using Diode test function, normal forward voltage drop (forward biased) for a

good silicon diode is between 0 400V to 0 900V A reading higher than that indicates a

leaky diode (defective) A zero reading indicates a shorted diode (defective) An OL

indicates an open diode (defective) Reverse the test leads connections (reverse

biased) across the diode The digital display shows OL if the diode is good Any other

readings indicate the diode is resistive or shorted (defective)

CAUTION

Using Resistance, Continuity or Diode function in a live circuit will produce false results

and may damage the meter In many cases, the suspected component(s) must be

disconnected from the circuit to obtain an accurate measurement reading

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