3-349-628-03
8/3.16
GMC-I Messtechnik GmbH
METRAFLEX 300M, METRAFLEX 300MXBL
Flexible AC Current Sensors
for Multimeters and Energy and Power Disturbance Analyzers
METRAFLEX 300MXBL
Application
METRAFLEX 300M or METRAFLEX 300MXBL
are designed for the
safe, precise and flexible measuring on busbars and in distribution
cabinets. The coil is ideally suited for areas with restricted access
and space.
The METRAFLEX are AC current probes utilising Rogowski princi-
ple. They can be used to measure AC current up to 300 A by
being connected to an appropriate measuring device (multimeter,
data logger, power analyser, oscilloscope etc.).
The flexible probe allows current measurements on conductors
that are hard to reach. To this end, the flexible current transform-
ers can be placed around one or several conductors of any type
and design (insulated cable, busbars, pipes).
Internal batteries allow for an independent operation of the mea-
suring amplifier.
METRAFLEX 300MXBL
The flexible current sensors
METRAFLEX 300MXBL
can be used
for long-term measurements by means of external power supply,
see accessory ISOFLEX-MHXL.
For MAVOWATT 230/240/270/270-400 instruments, the current
sensors
METRAFLEX 300MXBL
are supplied with voltage directly
from the instrument. No external power supply is required.
Technical Data
1)
under reference conditions
Current sensor /
Application
Multimeter
MAVOWATT
230/240/270
MAVOWATT
20, 30, 40, 70
MAVOSYS 10
METRAFLEX 300M
METRAFLEX
300MXBL
Feature METRAFLEX 300M
Measuring ranges 3 A 30 A 300 A
Scaling factor 1 10 100
Output sensitivity 1000 mV/A 100 mV/A 10 mV/A
Accuracy
(45 ... 65 Hz)
1% of rdg.
0.2 A
1)
1% of rdg.
1 A
1)
Noise 3 mV eff. 1 mV eff. 0,1 mV eff.
Output Connector 1 pair 4 mm safety plugs
Feature METRAFLEX 300MXBL
Measuring ranges 3 A 30 A 300 A
Scaling factor 2 20 200
Output sensitivity 500 mV/A 50 mV/A 5 mV/A
Accuracy
(45 ... 65 Hz)
1% of rdg.
0.1 A
1)
1% of rdg.
0,5 A
1)
Noise 1,5 mV eff.
Output Connector 4 pin Hypertronics plug
• Wide range of applications, 3 measuring ranges
3 A/30 A/300 A AC and large bandwidth 20 Hz ... 100 kHz
for Power and mains quality analysis
• Precise measurements even with low currents, due to wide
dynamic range and high sensor sensitivity
• Low conductor position influence and minimum stray field influence
• Easy to operate in restricted space thanks to small sensor
cross-section of 6 mm
• Safe handling even with protection gloves; opening of sensor
and measuring range setting in one-hand operation
•
METRAFLEX 300MXBL:
External power supply for long-term
measurements:
– MAVOWATT 230/240/270/270-400: power supply via MAVOWATT,
no further accessory required
– MAVOWATT 20/30/40/70 incl. DC/DC-Transformer ISOFLEX-MHXL
• Current sensor with protection type IP50, measuring amplifier
with IP40
• High level of safety for the user, measurement category
1000 V@CAT III, 600 V @ CAT IV and unlimited overload
capacity, rated for continuous use
METRAFLEX 300M, METRAFLEX 300MXBL
Flexible AC Current Sensors
2 GMC-I Messtechnik GmbH
Influencing Quantities
Output load 100 k for specified accuracy
Frequency range 20 Hz bis 100 kHz ( ( 1 dB / 50 Hz)
Phase angle error < 1° (45 ... 65 Hz)
Position sensitivity 2.5% of reading
External fields 0.25% of measuring range
at a distance of > 100 mm from sensor
Temperature coefficient
0.15% of reading/°K
Reference Conditions
Ambient temperature
+15 C ... +25 C
Relative humidity 20% ... 75%
Operating voltage 3 V 0.5 V
Frequency of
measured quantity 45 Hz ... 65 Hz
Waveshape of
measured quantity Sine
Power-frequency
magnetic field < 30 A/m
Conductor position Conductor vertical in relation to senor level
and at the geometrical center
Measuring loop shape
circular
Output load 100 k
Power Supply of Measuring Amplifier
Power supply two AA MN1500 LR6 alcaline batteries
or
for METRAFLEX 300MXBL
external supply (2...3 V DC/max.100 mA)
Battery life approx. 80 hrs.
External power supply for METRAFLEX 300MXBL
Connection by barrel plug socket
5.5/2.1 mm, minus at center pin
Display Functions
Battery status LED (orange) „LOW BATTERY“ lights up:
– battery voltage too low,
or
– external power supply
Overcurrent LED (red) „OVERLOAD“ lights up
Mechanical Design
Measuring Amplifier
Dimensions 110 (H) x 65 (W) x 23 (D) mm
Output
measuring signal METRAFLEX 300M:
0.5 m coaxial cable connected
with 4 mm safety plug
METRAFLEX 300MXBL:
0.5 m coaxial cable connected
with 4 pin Hypertronics plug
Material ARNITE T06-200SNF double insulation,
UL94 V-0
Protection IP40 per DIN VDE 0470 Part 1/EN 60529
Flexible Rogowski Current Sensor
Sensor length 16 cm, double insulation
(on request: 22 cm or 31,5 cm)
Sensor cross-section
6 mm
Connector cable
between probe and housing, length 2 m
Material Sensor: Alcryn 2070 NC
Lock: LATI LATENE 7H2W V0
Protection IP50 per DIN VDE 0470 Part 1/EN 60529
Ambient Conditions
Operating temperature
–20 °C to +65 °C (–4 °F to +149 °F)
Storage temperature –40 °C to +75 °C (–40 °F to +167 °F)
Humidity 15% to 85%
, no condensation allowed
Electrical Safety
Safety class II, double insulation
Safety standards EN 61010-1:2001
EN 61010-031:2002 +A1:2008
EN 61010-2-032:2002
Measuring category 1000 V
RMS
CAT III, 600 V
RMS
CAT IV
Voltage between
output and ground max. 30 V
Pollution degree
2 (sensor and measuring amplifier)
Electromagnetic Compatibility EMC
Interference emission
EN 61326-2:2006 class B
Interference immunity
EN 61326-2:2006
Applicable Regulations and Standards
DIN EN 61010-2-032
(VDE 0411-2-032)
Safety requirements for electrical equipment for measurement,
control and laboratory use
– Particular requirements for
hand-held and hand-operated current sensors
EN 60529
VDE 0470 Part 1
Test instruments and test procedures
– degrees of protection provided by enclosures (IP code)