CONDENSED INSTRUCTIONS:
Belt:
Lay the belt around your waist and adjust it.
«
Ω
»
terminal
:
Connect the measurement coil cable to
this terminal. This in turn must be connected to a
telescoping rod or a test probe.
4 mm banana plug:
Connect an alligator clip or a PE
adapter for electrical outlets to this plug.
«
ϕ
»
key:
Press and hold this key until you hear a double
acoustic signal.
Alligator clip or PE adapter for electrical outlets:
Connect this (these) to the selected equipotential bonding
reference measurement point (e.g. the ground pin of an
electrical outlet).
Test probe or telescoping rod:
Connect this (these)
to the protective conductor.
Display:
Read resistance (in ohms) which was measured
between the alligator clip (or the PE adapter for electrical
outlets) and the test probe (or the telescoping rod).
TECHNICAL DATA:
Protection is impaired if the instructions are not complied with.
Device protection:
400 V~ between the two device terminals or between one
terminal and the cable plug. Fuse: 6.3 mm x 32 mm, HPC 30 kA, 500 mA~,
690 V~. Refer to section K regarding fuse replacement.
User protection (with regard to grounding):
600 V~ CAT III / 300 V~ CAT IV, reinforced insulation, class 2, pollution degree
2, per EN / IEC61010-1:2010, and 300 V~ CAT III / 300 V~ CAT IV, reinforced
insulation, class 2, pollution degree 3, per EN / IEC61010-1:2010.
IP2X per EN / IEC60529:2001.
Where protection of the METRALINE RLO-CHECK and accessory components
is concerned, connection of the METRALINE RLO-CHECK to accessory
components offers the weakest protection.
Ambient conditions:
Pollution degree 2 (conventional environment) or 3 (see
above), temperature range for operation and storage: -20 C to +55 C, maximum
relative atmospheric humidity: 80% for temperatures up to 31 C, linear
reduction of relative atmospheric humidity down to 50% at 40 C. The test
instrument may not be immersed. Protect against liquids, rain and in general
against influences due to weather. The device may not be used in potentially
explosive atmospheres or moist environments.
Max. amperage within the cable (when used only as a cable retractor,
see I):
0.5 A (fuse protected).
Warning regarding interference voltage:
If interference voltage is applied to the protective conductors, resistance
measurement is disabled. An intermittent acoustic signal is generated, the color
of the display is changed to red and the interference voltage value is displayed. If
a minus sign (-) appears to the left of this value, the interference voltage is direct
voltage and otherwise alternating voltage. The METRALINE RLO-CHECK
displays the TRMS value (superimposed, sinusoidal alternating voltage). Input
impedance: 300 k
Ω.
Warning range: 8 V~ / GS to 400 V~ / GS.
Maximum compensation value:
4
Ω
.
Power supply:
4 AA alkaline batteries (rechargeable AA batteries can be used
but they reduce the duration of use).
Duration of use:
Approx. 1.7 days under normal conditions of use at 20 C
with new batteries. Approx. 5 hours and 50 minutes for continuous
measurement of volume resistance of an earthing conductor of less than 1
Ω
with activated acoustic signal and new batteries. The instrument is switched off
automatically after five minutes of nonuse.
Method for measuring volume resistance of the earthing conductor:
Current between 200 and 210 mA, voltage between 4 and 6 V, automatic
polarity reversal, in accordance with EN / IEC61557-4:2007.
Functional safety of volume resistance per EN61557-4:
±0.07
Ω
from 0.00
Ω
to 0.50
Ω, ±10 % ±0.02 Ω
from 0.50
Ω
to 2.00
Ω
and ±8 % at above 2.00
Ω.
In order to assure that measuring accuracy is not impaired in the following cases:
- Interchanging of accessories,
- Relocation to another environment (significant change in temperature or
relative atmospheric humidity),
- Swapping of the cable plug connections (connection to the cable plug instead of
the « AUX » terminal and vice versa).
Balance the utilized accessories before performing the respective measurement
(see sections E and G), and replace the batteries if the battery symbol blinks.
Volume resistance measuring range:
0.00
Ω
to 20.0
Ω.
Display resolution for volume resistance:
0.00
Ω
to 9.99
Ω
and 10.0
Ω
to 20.0
Ω.
3-447-019-03
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OPERATING INSTRUCTIONS 2/2
METRALINE RLO-CHECK
Digital, low resistance measuring instrument
per EN 61557-4 / VDE 0413-4 with cable reel
and 30 m cable for measuring the resistance
of protective conductors and equipotential
bonding conductors