Datasheet
3-447-018-03
1/5.18
GMC-I Messtechnik GmbH
METRALINE RLO
CHECK
Digital Low-Resistance Meter per EN 61557-4
Applications
The METRALINE RLO-CHECK is a test instrument for checking
the continuity of protective conductors and equipotential bonding.
With the help of the acoustic and luminous signals generated by
the t
est instrument, the user determines whether or not the conti-
nuity of the protective conductor
and equipotential bonding has
an electrical resistance of no greater than 1 .
Measurement can be alternatively conducted between two input
sockets instead of between a measuring instrument input socket
and the cable reel output.
Features
Interference Voltage Detection
If interference voltage is detected at the r
espective protective con-
ductor, resistance measurement is disabled. An intermittent
acousti
c signal is generated, the color of the display is changed to
red and interference voltage is displayed as an RMS value. Input
impedance: 300 k, wa
rning range: 8 V~/DC to 400 V~/DC.
Balancing and Calibration
The measuring instrument can be
balanced to 0 with the help
of the short-circuit shunt.
The threshold for the co
ntinuity test can be balanced to 1 with
the help of the calibration shunt.
Applicable Regulations and Standards
IEC 61010-1/-031
DIN EN 61010-1/-031
VDE 0411-1/-031
Safety requirements for electrical equipment for
measurement, control and laboratory use
Part 1: General requirements
Part 31: Safety requirements for hand-held probe
assemblies for electrical measurement and test
DIN EN 61557-1
VDE 0413-1
Electrical safety in low voltage distribution systems up
to 1000 V AC and 1500 V DC – Equipment for testing,
meas
uring or monitoring of protective measures
Part 1: General requirements
DIN EN 61557-4
VDE 0413-4
Part 4: Resistance of earth connection and
equipotential bonding
IEC 61326-1
DIN EN 61326-1
Electrical equipment for measurement, control and
laboratory use – EMC requirements
Part 1: General requirements
DIN EN 60529
VDE 0470-1
Degrees of protection provided
by enclosures (IP code)
• Cable reel with 30 m cable
• Contact resistance measurement,
measuring range: 0.00 ... 20.0
• Acoustic signaling for continuity (R < 1 )
• Acoustic and optical indication of int
erference voltage
detection
• Interference voltage display: 8 ... 400 V
• Automatic polarity reversal per DIN EN 61557-4/VDE 0413-4
• Balancing function for cable reel and accessories
(compensation for up to 4 )
• Test certificate
• Extensive accessories