Maintenance, Cleaning, Technical Data
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6.0 Determination of the Rotary Field Direction
Within a three-phase system the sequence of the three phases determine the
rotary direction of a motor connected.
The correct phase sequence L1, L2, L3 results in a clockwise rotation.
• Connect test probes respecting the correct sequence to the test instrument
• Connect the test probes with the three mains phases
• If the LED “R” is illuminated, a clockwise rotary field is present. If the LED
“L” is illuminated a counter-clockwise rotary field is present.
7.0 Maintenance
When using the instrument in compliance with the instruction manual, no
special maintenance is required.
8.0 Cleaning
If the instrument is dirty after daily usage, it is advised to clean it by using
a humid cloth and a mild household detergent. Prior to cleaning, ensure
that instrument is disconnected from external voltage supply and any other
instruments connected. Never use acid detergents or resolvent for cleaning.
After cleaning, do not use the HDT Phase Rotation Indicator for a period of
approx. 2h.
9.0 Technical Data
Phase Indication
3x LED „L1“, „L2“, „L3“
Phase Rotation Indication
2x LED „R“, „L“
Warning Indication
1x LED
Technical Date, Warranty
Voltage Phase to Phase
100…700 V
Max. Input Voltage per
Phase (Lx) against Neutral (N)
400 V
Frequency
50…60 Hz
Duration Time
Continuous
Input Current
≤ 3,5 mA
Measurement Category
CAT IV, max. 600 V against earth
Overvoltage Category
IV
Pollution Degree
2
Temperature Range
0…40°C
Height above Sea Level
≤ 2000 m
Protection Degree
IP 40
Safety
IEC/EN 61010-1, IEC/EN 61557-7,
IEC/EN
61010-031
Dimension approx.
93 x 75 x 31 mm
Weight approx.
115 g (without cables)
Warranty
NEUMANN instruments are subject to strict quality control. However, should
the instrument function improperly during daily use, your are protected by
our 24 months warranty (valid only with invoice). We will repair free of char-
ge any defects in workmanship or material, provided the instrument is retur-
ned unopened and untampered with, i.e. with undamaged warranty label.
Any damage due to dropping or incorrect handling are not covered by the
warranty. If the instrument shows failure following expiration of warranty,
our service department can offer you a quick and economical repair.
D_NEUMANN_Bed. 8110B.indd 18
08.07.19 15:58
