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Megger 212359 Hand-Crank/Line Analog Major Megger Insulation Tester
$1255.00
Hand-Crank/Line Analog Major Megger Insulation Tester
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Quality is crafted into every Major MEGGER Insulation Tester, with excellent test voltage regulation, direct measurement readout and an external guard terminal to eliminate surface leakage current from the measurement. Five models are available for general purpose testing which include a low-voltage model.
All are portable, self-contained instruments designed to give rapid and accurate measurements.
Four of the models feature an analog display having four selectable test voltages of 100, 250, 500 and 1000 Vdc, measuring insulation resistance up to 2000 MΩ, and an ohm range to 5000Ω. The other model has four test voltages of 50, 100, 250 and 500 Vdc measuring insulation resistance up to 1000 MΩ.
The only other difference between the five analog models is the type of power source. Power for models MJ159 and MJ160 is derived from a low-voltage, hand cranked generator which has been designed to be easy to turn even under full load conditions. The low-voltage generator is connected to an electronic inverter to provide a very stable test voltage. Accuracy of measurement is unaffected by variations in the generator cranking speed and the test voltage is maintained at its rated value. Power for model MJ359 is provided by 120 V ac 50/60 Hz or low-voltage generator. Model MJ559 is also 120 Vac 50/60 Hz or internal rechargeable batteries and model MJ459 is powered by 6 replaceable AA alkaline cells.
As a safety feature, the ac voltage range becomes effective as soon as the instrument is connected to the circuit under test. Therefore, a warning is given that the circuit under test is not de-energized before the instrument is operated. Though calibrated for ac voltage, this range also monitors the automatic discharge feature so that after equipment having capacitance (i.e. a cable), has been tested, an indication can be given that the voltage has discharged to a level that is safe for removing the test leads.
Each instrument has a guard terminal which may be used to prevent the effects of surface leakage from influencing the readings. This is achieved by diverting the leakage current through the guard terminal and away from the instrument?s measuring circuit.
Each instrument is built into a strong ABS plastic case with a fold down carrying handle.
Specifications:
| Insulation Range | Insulation Resistance: 0.1Ω – 2000 MΩ (0.1Ω -1000 MΩ for MJ160) Accuracy: ±1.25% of fsd on a 2.8 in. (71.1mm) arc length |
| Nominal Test Voltages | d.c: 100 V, 250 V, 500 V, 1000 V. (MJ160 is 50 V, 100 V, 250 V, 500 V) |
| Accuracy | 250 V, 500 V, 1000 V +30%, -0% max. 50 V, 100 V, +40%, -0% max. Midscale: 4 MΩ (2 MΩ for MJ160) Short Circuit Current: 1.9 mA (0.65 mA for MJ160) Maximum Load Capacitance: 1μF with less than ±0.1″ pointer movement Discharge: Up to 1μF capacitance is discharged from 1000 V to less than 42.4 V in less than 4 secs Resistance Range:0.1 ? – 5000 ? |
| Test Voltage Characteristics | Open circuit Test voltage: 3 V ±0.2 V Short Circuit Current: 2 mA ±10% Accuracy: ±1.25% of fsd on a 2.8 in. (71.1mm) arc length: |
| Safety Voltage Check | Voltage measurement: 0.1 V – 600 V a.c; the meter is RMS calibrated and average responding Safety voltage indicator: Indicates the presence of d.c. voltages. Scaling is not the same as the a.c. meter. True d.c. voltage equals scale reading divided by 2.22 Accuracy: 2.5% of full scale |
| Power Supplies | MJ159 and MJ160: Low voltage brushless a.c. generator. Cranking speed between 130 rpm and 170 rpm MJ359: Dual operation low voltage brushless a.c. generator or 120 V 50/60 Hz mains (line) supply MJ459: Six IEC LR6 cells (AA) Battery life: not less than 1300 insulation or Resistance range tests MJ559: Dual operation 120 V 50/60 Hz mains (line) supply and rechargeable battery. Six Ni Cad cells (e.g. AA, NEDA 15 NC) |
| Safety | The instruments meet the requirements for double insulation to EC 1010-1(1995), EN 61010 (1995) to installation Category II, 300 V phase to earth (ground), 600 V installation Category I |
| Flash Test | 6 kV a.c. r.m.s. |
| Fuses | 500 mA (FF) 660 V Ceramic 50 kA HBC 11/4 x 1/4 in. (32 mm x 6 mm) 7A (F) 440 V Ceramic 10 kA HBC 11/4 x 1/4 in. (32 mm x 6 mm) 100 mA (F) HBC 20 mm x 5 mm (for line protection only) MJ359 and MJ559 only: Power connection plug fuse 100 mA 240 V HBC (20 mm x 6 mm) Mains power cord fused plug (when applicable) 3 A 250 V ceramic HBC fuse to BS1362 11/4 x 1/4 in. (32 mm x 6 mm) |
| E.M.C. | In accordance with IEC 61326 includes amendment No. 1. |
| Operating Temperature Range | 32° to 113°F (0° to 45°C) for battery operated models 14° to 122°F (-10° to 50°C) |
| Humidity Range | Operating: 70% RH max. at 68°F (20°C) 60% RH max. at 95°F (35°C) 50% RH max. at 105°F (40°C) Storage: 95% RH max. at 95°F (35°C) |
| Dimensions | 5.1 H x 4.9 W x 7 L in. (130 H x 125 W x 180 L mm) |
| Weight | Approximately 1 kg (2.3lb) |
| Cleaning | Wipe disconnected instrument with a clean cloth dampened with soapy water or Isopropyl Alcohol (IPA). |
Features:
- Hand-crank power. Never run out of batteries!
- 2000MΩ max insulation resistance
- No scale multipliers
- Multiple test voltages (100/250/500/1000V) for spot and step voltage testing
- Guard terminal to eliminate surface leakage current
| Weight | 1 kg |
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