MEGOHM 200

picto fleche Telecom megohmmeter – ohmmeter

The MEGOHM 200 is a multi-purpose electronic resistance measurement instrument particularly suited for maintenance, verification and reception of telephone lines, and more generally of all low voltage cables.

It measures insulation resistance, loop resistance, AC and DC voltage and detects threshold crossings.

  • Analogue and digital megohmmeter
  • Analogue and digital continuity ohmmeter
  • Adjustable test voltage from 50 to 500 V
  • Rugged, lightweight and IP54 for onsite use
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The MEGOHM 200 is a multi-purpose electronic resistance measurement instrument particularly suited for maintenance, verification and reception of telephone lines, and more generally of all low voltage cables.

It measures insulation resistance, loop resistance, AC and DC voltage and detects threshold crossings.

  • Analogue and digital megohmmeter
  • Analogue and digital continuity ohmmeter
  • Adjustable test voltage from 50 to 500 V
  • Rugged, lightweight and IP54 for onsite use

MEGOHM 200 has dual analogue / digital display:

  • analogue, to display the trend and a threshold crossing eventually (programmable limit)
  • digital, for an improved accuracy

Designed for onsite use, the instrument features a rugged protective sheath, uses latest generation Li-Ion batteries with short recharging time, and has a large graphical display showing all information about the test performed.

 

Specifications and performances @23°C ±1°C

Insulation resistance measurement at test voltage of 50 to 300 V adjustable by steps of 25 V

Analogue rangeDigital rangeAnalogue accuracyDigital accuracy / 1 year
RangeMeasured resistanceResolution
0.01 MΩ to 1 GΩ0.00 MΩ to 99.50 MΩ0 to 10 MΩ0.01 MΩ±1 segment5% RDG + 0.01 MΩ
10 to 30 MΩ0.05 MΩ
30 to 50 MΩ0.10 MΩ10% RDG
50 to 100 MΩ0.5 MΩ
100.0 MΩ to 1000.0 MΩ100 to 200 MΩ1.0 MΩ
200 to 400 MΩ5.0 MΩ
400 to 700 MΩ10.0 MΩ
700 to 1000 MΩ20.0 MΩ

Insulation resistance measurement at test voltage of 300 to 500 V adjustable by steps of 50 V

Analogue rangeDigital rangeAnalogue accuracyDigital accuracy / 1 year
RangeMeasured resistanceResolution
0.03 MΩ to 10 GΩ0.00 MΩ to 995.0 MΩ0 to 100 MΩ0.01 MΩ±1 segment5% RDG + 0.01 MΩ
100 to 300 MΩ0.05 MΩ
300 to 500 MΩ0.10 MΩ10% RDG
500 to 995 MΩ0.5 MΩ
1000 MΩ to 10000 MΩ1000 to 2000 MΩ1.0 MΩ
2000 to 4000 MΩ5.0 MΩ
4000 to 7000 MΩ10.0 MΩ
7000 to 10000 MΩ20.0 MΩ

500 V constant voltage for insulation > 5 MΩ

Continuity resistance, loop resistance measurement

Analogue rangeDigital rangeAnalogue accuracyDigital accuracy / 1 year
RangeMeasured resistanceResolution
0.03 Ω to 10 kΩ0.0 Ω to 995.5 Ω0 to 100 Ω0.1 Ω±1 segment0.5% RDG + 0.02 Ω
100 to 500 Ω0.2 Ω
500 to 995,5 Ω0.5 Ω
1000 Ω to 10000 Ω1000 to 2000 Ω1 Ω
2000 to 3000 Ω2 Ω
3000 to 5000 Ω5 Ω
5000 to 10000 Ω10 Ω

Measuring current: < 1 mA

Visual and sound signal on continuity threshold crossing

DC voltage measurement

Measurement rangeResolutionAccuracy / 1 year
0 to 100 V0.1 V±1% RDG + 0.5 V
100 to 300 V1 V±1% RDG + 1 V

Input impedance: 200 kΩ

Digital display: 3 digits

AC voltage measurement

Measurement rangeResolutionAccuracy / 1 year
0 to 100 V0.1 V±1% RDG + 0.5 V
100 to 300 V1 V±1% RDG + 1 V

Input impedance: 200 kΩ

Digital display: 3 digits

Bandwidth: 40 à 400 Hz

Additional specifications

Measurement stabilization time< 2 seconds for line capacitance of 1 µF
Auto-discharge featureAuto-discharge feature for line capacitance at the end of a measurement
Threshold detectionThreshold detection for resistance and insulation measurements with sound and visual signal when crossed

General specifications

Size210 x 110 x 50 mm
Weight900 g
Display240 x 320 pixel liquid crystal graphical display with backlite and contrast control
Analogue display: bargraph 67 segments with 5-decade logarithmic scale
Digital display: 4 digits
Connexion2 safety 4 mm plugs
Power supply230 V ±10% (50/60 Hz)
Automatic switch offAutomatic switch off of the instrument after 30 minutes without action
BatteryType: Li/Ion
Charging time: 4 h
Lifetime: 4,500 tests of 5 s at 500 V with a resistance ≥ 0.5 mΩ

Environmental specifications

Reference range23°C ±1°C (RH: 45 to 75% w/o condensing)
Operating reference range-10 to 50°C (RH: 20 to 80% w/o condensing)
Limit operating range-15°C to +55°C (RH: 10 to 80% w/o condensing) (70% at 55°C)
Storage temperature limits-30°C to +60°C
Maximum height0 to 2000 m
IP protectionIP54 according to EN60529

Safety specifications

ProtectionWhen using insulation measurement function at 50 V and 500 V, measuring voltage is applied on line only while measuring key is pressed. When the key is released, the cable is automatically unloaded within 1sec.Overload protection up to 380 V
ClassIn accordance with EN 61010-1Category II, pollution 2
Chocks and vibrationsEN 61010-1
EMC conformityImmunity:

  • EN 61000-4-2
  • EN 61000-4-3
  • EN 61000-4-5
  • EN 61000-4-6
  • EN 61000-4-11
  • EN 61000-4-4

Conducted and radiated emissions:

  • EN 55022, class B
  • EN 61000-3-2
  • EN 61000-3-3

Instrument:

MEGOHM 200         Cable fault locator

Delivered in standard with:

  • Set of testing leads and crocodile clips
  • User manual
  • Transport case, shoulder strap and stand

Packing information:

Size                       210 x 110 x 50 mm

Weight                   900 g

ProductDescriptionReleaseType
Instruction manual for Megohm 200V0pdf