Datasheet

3-349-816-03
1/11.14
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)