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Ideal for applications where operation voltages surpass 1000V and higher insulation test voltages are required, Megger has introduced their MIT2500 1004-745 2.5kV Hand-Held Insulation and Continuity Tester.
The MIT2500 delivers 50V, 100V, 250V, 500V, 1000V and 2500V fixed ranged voltages, in addition to a variable range of voltages between 50V and 2500V to be “dialed in”. The novel test voltage feedback control retains the output test voltage to within 2% of the selected range, even when under test. The MIT2500 displays the actual test voltage on a smaller digital readout while the measurement is presented on the larger digital display.
For continuity and resistance testing, the unit boasts a list of new and advanced features and functions, like the capability for differential measurements between two consecutive continuity tests. It is equipped with a single resistance range, fully automatic from 0.01 Ω to 1.0 MΩ and a function for automatic bi-directional testing without the need to reconnect leads.
The MIT2500 is over-moulded with an IP54 weatherproof rating for durability and is outfitted with a guard terminal for maintaining accuracy
| All quoted accuracies are at +20 °C. | |||
| INSULATION | |||
| Insulation accuracy | |||
| 50 Volts | 10 GΩ | ± 2% | ±2 digits ±4.0% per GΩ |
| 100 Volts | 20 GΩ | ± 2% | ±2 digits ±2.0% per GΩ |
| 250 Volts | 50 GΩ | ± 2% | ±2 digits ±0.8% per GΩ |
| 500 Volts | 100 GΩ | ± 2% | ±2 digits ±0.4% per GΩ |
| 1000 Volts | 200 GΩ | ± 2% | ±2 digits ±0.2% per GΩ |
| 2500 Volts | 200 GΩ | ± 2% | ±2 digits ±0.2% per GΩ |
| Service Error: BS EN 61557-2 (2007). | |||
| 50 V | ± 2.0% ±2d | 100 kΩ - 900 kΩ | ±10.5% |
| 100V | ± 2.0% ±2d | 100 kΩ - 900 kΩ | ±10.3% |
| 250V | ± 2.0% ±2d | 100 kΩ - 900 kΩ | ±10.3% |
| 500V | ± 2.0% ±2d | 100 kΩ - 900 kΩ | ±10.3% |
| 1000V | ± 2.0% ±2d | 100 kΩ - 900 kΩ | ±11.5% |
| Guard terminal performance | <5% error at 500 kΩ parallel circuit resistance with 100 MΩ load | ||
| Display range | Analogue: 1 GΩ full scale | ||
| Resolution | 0.1 kΩ | ||
| Short circuit/ charge current | 2 mA +0% -50% to EN 61557-2 (2007) (except 2500 V) | ||
| Terminal voltage accuracy | -0% +2% ±2 V | ||
| Test current | 1 mA at min. pass value of insulation to a maximum of 2 mA max | ||
| Operation | EN61557 : 0.10 MΩ to 1.0 GΩ | ||
| Max. capacitive load | 15 nF on tests above 1000 V (only available on MIT2500) | ||
| Leakage current display | 10% ±3 digits | ||
| Voltage | ±3% ±2 digits ±0.5% of rated voltage | ||
| Timer control | Countdown timer 60 second (adjustable to 10 minutes) | ||
| Note | Above specifications only apply when high quality silicone leads are being used. | ||
| CONTINUITY: | |||
| Continuity measurement | 0.01 Ω to 1 MΩ (0 to 1000 kΩ on analogue scale) | ||
| Continuity accuracy | ±3% ±2 digits (0 to 100 Ω ) ±5% ±2 digits (100 Ω - 500 kΩ) Service Error: BS EN 61557-4 (2007) - ±2.0%, 0.1 Ω - 2 Ω ±6.8% | ||
| Open circuit voltage | 5 V ± 1 V | ||
| Test current | 200 mA (–0 mA +20 mA) (0.01 Ω to 4 Ω) | ||
| Polarity | Single polarity (Default) / Dual polarity (configurable on setup). | ||
| Lead resistance | Null up to 10 Ω | ||
| VOLTAGE RANGE: | |||
| Voltage range | DC: 0 to 600 V AC: 10 mV to 600 V TRMS sinusoidal (15 Hz to 400 Hz) Unspecified: 0 – 10 mV (15 to 400 Hz) | ||
| Volt range accuracy | AC: ±2% ±2 digits Service Error: BS EN 61557-1 (2007) ±2.0% ±2d, 0 V – 300 V AC/DC ±5.1% | ||
| Waveform | Non-sinusoidal: ±3% ±2 digits >100 mV to 600 V TRMS ±8% ±2 digits 10 mV to 100 mV TRMS | ||
| Default voltmeter | ±0.5% ±1 digit (100 Hz to 400 Hz) unspecified | ||
| FREQUENCY: | |||
| Frequency measurement range | 15 Hz – 400 Hz | ||
| Frequency measurement accuracy | ±0.5% ±1 digits | ||
| CAPACITANCE MEASUREMENT: | |||
| Capacitance range | 0.1 nF to 10 μF | ||
| Accuracy | ±5.0% ± 2 digits ( 1 nF - 10 μF) | ||
| RESULTS STORAGE: | |||
| Storage capacity | >1000 test results | ||
| Data download | Bluetooth® wireless Bluetooth® Class II | ||
| Range | up to 10 m | ||
| Power supply | 6 x 1.5 V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) Alkaline or 6 x 1.2 NiMH rechargeable cells may be used. | ||
| Battery life | 3000 insulation tests with duty cycle of 5 sec ON /55 sec OFF @ 1000 V into 1 MΩ Charger (Optional): 12 - 15 V DC (accessory interface) | ||
| Dimensions Instrument: | 228 mm x 108 mm x 63 mm (9.00 in x 4.25 in x 2.32 in) | ||
| Weight | 815 g (1 lb 13 oz) | ||
| Weight (inc. case) | 1.75 kg (3 lb 14 oz) | ||
| Fuse | Use only 2 x 500 mA (FF) 1000 V 32 x 6 mm (1.25 in x 0.24 in) ceramic fuse of high breaking capacity HBC 30 kA minimum. | ||
| Safety protection | The instruments meet EN 61010-1:2010 and EN 61010-2-030:2010 to 600 V phase to earth, Category IV. Refer to safety warnings supplied | ||
| EMC | In accordance with IEC 61326 including amendment No.1 | ||
| Temperature co-efficient | <0.1% per °C up to 1 GΩ <0.1% per °C per GΩ above 1 GΩ | ||
| ENVIRONMENTAL: | |||
| Operating temperature range | -10 °C to +55 °C (14 °F to +131 °F) | ||
| Humidity | 90% RH at 40 °C (104 ºF) max | ||
| Storage temperature range | -25 °C to +70 °C (13 °F to +158 °F) | ||
| Calibration temperature | +20 °C (+68 ºF) | ||
| Maximum altitude | 2000 m (6560 ft) | ||
| IP rating | IP 54 | ||
| The Bluetooth ® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc and is used under licence. | |||
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