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GMC-I Messtechnik GmbH
METRISO XTRA
High-Precision
Insulation, Low Resistance and Voltage Measurement Instrument
DAkkS Calibration Certificate as Standard Feature
German
Accreditation Body
D-K-15080-01-01
Application
The insulation and resistance measuring instrument allows for quick
and effective testing of protective measures in accordance with
DIN VDE 0100, ÖVE-EN 1 (Austria), NIV/NIN SEV 1000 (Switzer-
land) and regulations specific to other countries as well. The instru-
ment complies with IEC/EN 61557 regulations:
Part 1: General requirements
Part 2: Insulation resistance
Part 4: Resistance at earthing conductors, protective conduc-
tors and equipotential bonding
Part 10: Electric safety in low voltage systems up to
AC 1000 V and DC 1500 V – Equipment for testing,
measuring and monitoring protective measures
as well as requirements per VDE 0701-0702:
Repair, modification and testing of electrical devices
The insulation measuring instruments are suitable for the following tasks:
Measurement of insulation resistance at voltage-free devices
and systems, up to 1000 V depending upon variant
Checking of test objects for absence of voltage in systems up
to 1 kV
Testing of the resistance of earthing conductors, protective
conductors and equipotential bonding
Testing of electrostatic discharge capacity at floor coverings
(using shielded measurement cables) – EN 1081
With the so-called 1 mA test per DIN VDE 0845/EN 61645,
the instrument also allows to perform on-site tests of the
response voltage of overvoltage components (varistors, Zener
diodes, etc.) of requirement categories B and C / SPD Type 2
and 3) and to evaluate the test results in accordance with
manufacturer‘s data.
Features Overview
METRISO XTRA Article number M550S
Measurements
R
ISO
Ufixed = 50, 100, 250, 500, 1000 V (Limit values VDE 0100)
R
ISO
Uvariable = 50 ... 1000 V (Limit value+ = 1 MOhm)
R
ISO
Uramp = 50 ... 1000 V Display of breakdown voltage
PI/DAR Polarization Index Measurement
R 10 ... 10 k
R
LO
0,01 ... 10 (Limit value VDE 0100)
U 0 ... 1000 V
Display functions
Backlit display
Limit value LED (green/red) for:
Additional acoustic signal, limit values per VDE 0100
R
ISO
R
LO
Limit value LED Uramp for:
Signalling of ramp sequence
R
ISO
LED for dangerous contact voltage
(when switched off)
Battery level display
Special functions
Discharge of capacitive devices under test
Safety shutdown (UBatt < 8 V)
Data storage in the instrument (database max. 50,000 strucural elements)
Features
Measuring category CAT II 1000 V / CAT III 600 V / CAT IV 300 V
10 Mtest resistor
Terminals: charging socket, USB interfacee (slave), RS232 interface
DAkkS calibration certificate
Insulation measurement per IEC/EN 61557-2
Test voltages in fixed increments, variable or as a ramp
50 V, 100 V, 250 V, 500 V, 1000 V
Polarization index and absorption ratio
Intelligent filter – measurement-dependent and precise activation
for the measurement of very high resistances
Backlit dot matrix display for measured and limit values
Signalling of dangerous contact voltage
Acoustic signalling when limit value is exceeded
Detection of interference voltage in switch position OFF
Overvoltage protection
Protects the instrument in the event of inadvertent connection to mains power
– Fuse link for all resistance measuring ranges
– Electronic fuse for the protection of low resistance
and resistance measurement R
LO
and R
Low resistance mesurement per IEC 61557-4
Guard terminal for compensating surface current
Compact and rugged
For service calls under harsh conditions
One measuring point self-test with test resistance of 10 M
per IEC/HD 60364-6 / EN 50110
Bidirectional interface to ETC (report generating software)
1


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