Important Hints; Symbols; Unpacking; Positioning - Hameg HM8112-3 Benutzerhandbuch

I m p o r t a n t h i n t s

1 Important hints

(1) (2) (3)
1.1

Symbols

Symbol 1: Attention, please consult manual
Symbol 2: Danger! High voltage!
Symbol 3: Ground connection
Symbol 4: Important note
Symbol 5: Hints for application
Symbol 6: Stop! Possible instrument damage!
1.2

Unpacking

Please check for completeness of parts while unpacking. Also
check for any mechanical damage or loose parts. In case of
transport damage inform the supplier immediately and do not
operate the instrument.
1.3

Positioning

Two positions are possible: According to picture 1 the front
feet are used to lift the instrument so its front points slightly
upward. (Appr. 10 degrees)
If the feet are not used (picture 2) the instrument can be com-
bined with many other HAMEG instruments.
In case several instruments are stacked (picture 3) the feet rest
in the recesses of the instrument below so the instru-ments
can not be inadvertently moved. Please do not stack more than
3 instruments. A higher stack will become unstable, also heat
dissipation may be impaired.
picture 1
picture 2
picture 3
38
Subject to change without notice
(4) (5) (6)
1.4

Transport

Please keep the carton in case the instrument may require later
shipment for repair. Losses and damages during transport as
a result of improper packaging are excluded from warranty!
1.5

Storage

Dry indoor storage is required. After exposure to extreme tem-
peratures, wait 2 hrs before turning the instrument on.
1.6

Safety instructions

The instrument conforms to VDE 0411/1 safety standards appli-
cable to measuring instruments and it left the factory in proper
condition according to this standard. Hence it conforms also
to the European standard EN 61010-1 resp. to the internatio-
nal standard IEC 61010-1. Please observe all warnings in this
manual in order to preserve safety and guarantee operation
without any danger to the operator. According to safety class 1
requirements all parts of the housing and the chassis are con-
nected to the safety ground terminal of the power connector.
For safety reasons the instrument must only be operated from
3 terminal power connectors or via isolation transformers. In
case of doubt the power connector should be checked according
to DIN VDE 0100/610.
Do not disconnect the safety ground either inside or
outside of the instrument!
– The line voltage of the instrument must correspond to the
line voltage used.
– Opening of the instrument is only allowed to qualified per-
sonnel
– Prior to opening, the instrument must be disconnected from
the line voltage and all other inputs/outputs.
In any of the following cases the instrument must be taken out
of service and locked away from unauthorized use:
– Visible damage
– Damage to the power cord
– Damage to the fuse holder
– Loose parts
– No operation
– After long term storage in an inappropriate environment,
e.g. open air or high humidity.
– Excessive transport stress
1.7

CAT II

The following remarks concern only the safety of the user. Other
aspects e.g. the maximum input voltage etc. are covered in the
specifications section of this manual and are to be observed
as well.
Measurements in circuits which are indirectly connected with
the mains supply are possible with adequate converters (e.g.
clamp-on ammeters) which fulfil at least the requirements
of the safety class of the measurement. The measurement
category of the converter specified by the manufacturer must
be considered.
Measurement categories CAT
The measurement categories were created with respect to the
different kind of transients incurred in practice. Transients are