Earth Resistance Meter
MRU-21 Earth Resistance Meter
2 in stock
Possible measurements:
- earth resistance measurment with 3-pole method,
- measurement of continuity of equipotential bondings and protective conductors with auto-zero function – with current 200 mA,
- resistance measurement using 2-pole method.
₨0
2 in stock
CompareWeight | 1.4 kg |
---|---|
Dimensions | 29 × 22 × 7 cm |
Measurement of earthing resistance
measurement range to IEC61557 – 5:
0,50 Ω…1,99 kΩ for Un=50 V;
0,68 Ω…1,99 kΩ for Un=25 V;
Range | Resolution | Accuracy |
0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
10,0…99,9 Ω | 0,1 Ω | |
100…999 Ω | 1 Ω | |
1,00k…1,99 kΩ | 0,01 kΩ |
• measurement current: under short circuit >20 mA,
• voltage on open terminals: selectable <25 V AC or <50 V AC,
• frequency of measurement current: 125 Hz
Measurement of interference voltage UN (RMS)
Range | Resolution | Accuracy |
0…100 V | 1 V | ±(2% m.v. + 3 digits) |
• measurement for DC and AC 45…65 Hz
Measurement of resistance of auxiliary electrodes RH i RS
Range | Resolution | Accuracy |
0…999 Ω | 1 Ω | ±(5% (RS+RE+RH) + 3 digits) |
1,00k…9,99 kΩ | 0,01 kΩ | |
10,0k…50,0 kΩ | 0,1 kΩ |
Measuremet of continuity of equipotential bondings and protective conductors
measurement range to IEC61557 – 4: 0,13 Ω…199 Ω
Range | Resolution | Accuracy |
0,00…9,99 Ω | 0,01 Ω | ±(2% m.v. + 3 digits) |
10,0…99,9 Ω | 0,1 Ω | |
100…199 Ω | 1 Ω |
- measuring method: technical 2-pole method,
- max. voltage on open terminals: 13 V,
- measurement current: under short circuit >200 mA,
- auto-zero function for measurement leads
Electric security:
- type of insulation: double, according to EN 61010 – 1and IEC 61557
- measurement category: CAT IV 300 V acc. to EN 61010 – 1
- protection class acc. to EN 60529: IP54
Rated operational conditions:
- operation temperature: -10…+55°C
- storage temperature: -20…+70°C
- humidity: 20…80%
Other technical data:
- LCD display: segment, backlit
- interface: USB,
- number of measurements carried out of set of batteries: > 1000 (5 Ω, 2 meas./min.)
- warranty: 2 years
- dimentions: 288 x 223×75 mm
- weigth: 1,4 kg
Based on 0 reviews
Be the first to review “MRU-21 Earth Resistance Meter”
-
Multimeters
UT81C Scope Digital Multimeter
UT81 series handheld digital oscilloscope multimeters combine oscilloscope and digital multimeter in one. Oscilloscope measurement mode includes signal input, data processing, auto measure, waveform storage, and transfer.
Multimeter mode features AC/DC voltage and current, resistance, diode, continuity, frequency, duty ratio, and capacitanceSKU: n/a -
Digital Multi Meter
18B WINHY DMM
Description
Features:
Multifunction:Can accurately measure AC/DC voltage, AC/DC current,resistance,capacitance,frequency,diode,LED test and continuity testing.
Portable Design:There is a back bracket for supporting multimeter,and also can collect test probe for your convenience.
Widely use:It’s perfect tool for the laboratory,factory and electricity.
Easy to Use & Clear to Read:With large LCD Backlight display,convenient to use and read.
More advantages:Auto power off,range,select,True RMS,data hold,over range indication and low voltage display.SKU: n/a -
Tool Kits
JM-8133 23 in 1 Screwdriver Ratchet Hand-tools
Features:
- New 23-in-1 interchangeable precise manual tool set.
- Professional portable hardware tools with perfect weight and compact design for easy implementation.
- Comes with an accessory box for small components.
- More bits of cr-v are very suitable for deep holes.
- Non-slip hard shaft provides more comfort and convenience.
- For repair laptops, mobile devices.
SKU: n/a
There are no reviews yet.