General Instructions; Precaution Safety Measures; Preliminary; During Use - Bahco BMMTRS1 Instrucciones Originales

BMMTRS1
ENGLISH

1. GENERAL INSTRUCTIONS

This instrument complies with IEC 61010-1: 2001, CAT III 1000V and CAT IV 600V overvoltage standards.
See Specifications.
To get the best service from this instrument, read carefully this user's manual and respect the detaile
safety precautions.
International symbols used on the Meter and in this manual are explained in chapter 1.2.
1.1 Precautions safety measures

1.1.1 Preliminary

• As the possibilities of high transient overvoltage occurred in today's power systems increase, more
stringent safety standards are set for the electrical test equipment. Transients on electrical systems
(power grid, feeder or branch circuits) will trigger a series of incidents that may result in serious
personal injury. To protect you against transients, safety must be built into the test equipment.
Overvoltage
In brief
category
CAT I Electronic
CAT II
Single-phase
receptacle con-
nected loads
CAT III Three-phase dis-
tribution, including
single-phase com-
mercial lighting
CAT IV
Three-phase at
utility connec-
tion, any outdoor
conductors
• When using this Multimeter, the user must observe all normal safety rules concerning:
— Protection against the dangers of electric current.
— Protection of the Multimeter against misuse.
• For your own safety, only use the test probes supplied with the instrument. Before use, check that
they are in good condition.

1.1.2 During use

• If the meter is used near noise generating equipment, be aware that display may become unstable
or indicate large errors.
• Do not use the meter or test leads if th ey look damaged.
• Use the meter only as specified in this manual; otherwise, the protection provided by the meter may
be impaired.
• Use extreme caution when working around bare conductors or bus bars.
Examples
• Protected electronic equipment.
• Equipment connected to (source) circuits in which measures are taken to
limit transient overvoltage to an appropriately low level.
• Any high-voltage, low-energy source derived from a high winding resist-
ance transformer, such as the high-voltage section of a copier.
• Appliance, portable tools, and other household and similar loads.
• Outlet and long branch circuits.
• Outlets at more than 10 meters (30 feet) from CAT III source.
• Outlets at more that 20 meters (60 feet) from CAT IV source.
• Equipment in fixed installations, such as switchgear and polyphase motors.
• Bus and feeder in industrial plants.
• Feeders and short branch circuits, distribution panel devices.
• Lighting systems in larger buildings.
• Appliance outlets with short connections to service entrance.
• Refers to the "origin of installation"; i.e., where low-voltage connection is
made to utility power.
• Electricity meters, primary overcurrent protection equipment.
• Outside and service entrance, service drop from pole to building, run
between meter and panel.
• Overhead line to detached building, underground line to well pump.
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