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MIT300
Series Insulation Tester - General Specifications |
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Insulation Ranges |
Nominal Test Voltage
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1000V, 500V, 250V (D.C.) for Models MIT310, MIT320, MIT330
500V, 250V (DC) for Model MIT300 |
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Measuring Ranges |
10kΩ to 999MΩ on all Instruments |
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Short Circuit Current |
1.5mA nominal |
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Test Current on Load |
>1mA at minimum pass values of insulation as specified in
BS 7671, HD 384, IEC 364 |
Accuracy
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±3% of reading ±2 digits up to 10MΩ
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for Models
MIT300, MIT310, MIT320, MIT330 |
| ±5% of reading ±2 digits up to 100MΩ |
| ±30% up to full scale |
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±2.5% of scale or |
for Model MIT310A |
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30% of reading 200k to
10MΩ |
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Terminal Characteristics
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Continuity Ranges |
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Measuring Range |
0.01Ω to 99.9Ω (0Ω to 50Ω on analog scale) |
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Open Circuit Voltage |
5V ±1V |
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Short Circuit Current |
205mA ± 10mA -5mA for Models MIT300,
MIT310, MIT320, MIT330
200mA to 250mA for Model MIT310A |
Accuracy (at 20°C)
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±3% ±2 digits for Models MIT300,
MIT310, MIT320, MIT330
±2.5% of scale length or 30% of reading 0.2Ω to 2kΩ for Model
MIT310A |
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Specifications |
Zero Offset Adjust
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0Ω to 9Ω for Models MIT300,
MIT310, MIT320, MIT330
0Ω to 0.5Ω for Model MIT310A |
Continuity Buzzer
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| Operates at < 5Ω |
for Models MIT300, MIT310 |
| Adjustable 1Ω to 20Ω |
for Models MIT320, MIT330 |
| Operates at < 5Ω |
for Model MIT310A |
| Response time <20ms |
for Models MIT300, MIT310, MIT320, MIT330 |
| Response time <100ms |
for Model MIT310A |
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Default Voltmeter
(all models except OFF)
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> 25V AC or DC is applied display will operate as a voltmeter
for Models MIT310, MIT320, MIT330 |
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Beeps and flash 'V' on display for Model MIT300 |
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All models including OFF for Model MIT310A |
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Test Inhibit |
If more than 50 volts is detected, testing will be inhibited |
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Voltmeter Range |
0 to 600V at 50/60Hz and DC |
Voltmeter Accuracy
at 20°C (DC or AC) |
±1% ± 2 digit) for
Models MIT300, MIT310, MIT320, MIT330
±2.5% of scale length for Model MIT310A |
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Auto Power Down |
Operates after 10 minutes if left in standby mode MIT310, MIT320,
MIT330 |
Automatic Discharge
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After an insulation test the item under test will be discharged
automatically. Any voltage present will be indicated on the display
so that the discharge can be monitored. |
Download Tests to PC
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USB interface (All data can be downloaded using Download Manager
(supplied) or Megger Powersuite Professional software. for Model
MIT330 |
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Test Result Storage |
1000 results (last result may be recalled to the display). for Model
MIT330 |
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Resistance Ranges (Models MIT320,
MIT330) can be used for Diode Testing |
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Measuring Range |
10Ω to 1MΩ |
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Open Circuit Voltage |
5V |
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Short Circuit Current |
1.5mA |
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Accuracy (at 20°C) |
±5% ±2 digits up to 100kΩ |
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Environmental Specifications |
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Operating Temperature |
-10°C to +60°C |
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Storage Temperature |
-25°C to +70°C |
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Operating Humidity |
93% R.H. at +40°C maximum |
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EMC |
In accordance with IEC 61326-1 |
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Weatherproof |
IP54 |
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Safety |
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Meets the requirements |
of
EN 61010-1 CAT III 600V, phase to earth |
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Terminal Fuse |
500mA (fast blow) 600V, 32mm x 6mm, ceramic HBC 10kA minimum. |
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General Specifications |
Power Supply (battery)
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Eight x 1.5V Alkaline type 'AA' (LR6) batteries (battery condition
is constantly shown on the display as a four-section bargraph)
(Rechargeable NiMH cells may be used) |
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Battery Life |
5000 consecutive tests (5 seconds per test) on any test using 2Ah
batteries |
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Dimensions (all models) |
203mm (L) x 148mm (W) x 78mm (D) |
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Weight |
980g approx. |
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