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MPP300
EN - 3
1.2. DURING
USE
Please carefully read the following recommendations and instructions:
CAUTION
Failure to comply with the notes and/or instructions may damage the
instrument and/or its components or be a source of danger for the
operator
The red flashing “POWER” LED indicates that the internal rechargeable
batteries are almost flat. In this case, connect the external power supply
as described in § 7.2
The IDC1, IDC2, IDC3 input connectors are type 4-pole type. Use only
clamps with 4-pin output connector or interpose adapter ACON3F4M
between the clamp output connector and the instrument input.
The instrument maintains the data stored also in case of flat battery
The instrument is particularly sensitive to ESD nearby and on the USB
port while it is operating; we recommend connecting the cables to the USB
port when the instrument is off
1.3. AFTER
USE
When measurements are completed, turn off the instrument by pressing and holding the
ON/OFF key for some seconds. If the instrument is not to be used for a long time, please
follow the instructions given in § 3.4
1.4.
DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY
Standard “IEC/EN61010-1: Safety requirements for electrical equipment for measurement,
control and laboratory use, Part 1: General requirements” defines what measurement
category, commonly called overvoltage category, is. § 6.7.4: Measured circuits, reads:
Circuits are divided into the following measurement categories:
Measurement category IV is for measurements performed at the source of the low-
voltage installation
Examples are electricity meters and measurements on primary overcurrent protection
devices and ripple control units
Measurement category III is for measurements performed on installations inside
buildings
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 standard requires that the transient withstand capability of
the equipment is made known to the user
Summary of Contents for MPP300
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