Megger MIT525-US
Megger MIT525 (1001-940)
Analog/Digital 5 kV; 500, 1000, 2500, 5000 V
5 kV Insulation Tester with auto IR, DAR, PI, Step Voltage, DD and Ramp
The new range of insulation resistance testers consists of three models: two 5 kV units (MIT515 and MIT525) and a 10 kV unit (MIT1025). Resistance measurement is available up to 10 TO for the 5 kV models and 20 TO for the 10 kV model. The new instruments are smaller and lighter than previous models yet offer advanced features and rapid charge capability.
A key productivity feature is the ability to take measurements when connected to line power/mains with a dead battery. Intelligent battery charging ensures the optimum charge rate as a function of battery level, resulting in minimum charge times.
FEATURES AND BENEFITS
- Smaller size and lighter weight allows easier transport and use without compromising performance.
- High measurement range enables installation testing and long-term trending of higher value apparatus.
- Unique dual case design allows for fire-retardant protection while maintaining ruggedness
- High-quality, flexible silicon test leads meet safety regulations of IEC 61010-31:2008 while ensuring measurement accuracy
- Timed IR plus PI, DAR, DD, SV and ramp tests maximize diagnostic testing capability.
- Operate from line power when battery fully discharged (charges while operating).
- Two and one-half hour full battery charge time (one-half hour charge for one hour testing) significantly increases productivity.
- Up to six hours continuous testing (5 kV) on a single battery charge.
- Industry best guard terminal performance to insure highest accuracy of measured values.
- Enhanced driver technology provides plug-and-play when connected to the internet. No tedious and potentially interruptive setup procedures.
- Dedicated voltmeter function (30 V to 660 V) with frequency measurement allows the user to check for induced voltages
- CATIV 600 V safety rating on all terminals allows for safe use in the widest range of applications
- Large LCD with automatic backlight.
- Noise filter rejects up to 3 mA noise for effective operation in electrically noisy environments.
- High altitude operation up to 3000 m while maintaining CATIV 600 V rating.
- Rotary switch operation for easy, intuitive field use
- Field replaceable battery.
- Locking test leads provide additional safety.
- 3 mA short circuit current with unique max power regulations technology ensures maximum transfer whatever the load until selected voltage is reached
- 5% accurecy all the way up to T-ohm at 5kV and 2 T-ohm at 10kV highest accuracy where it matter most
- Date and time-stamped test results reduce the risk of error in result interpretation.
Specification ( MIT515, MIT525, MIT10255 )
| Insulation Range, Analog | 100 kΩ to 10 TΩ |
| Insulation Range, Digital | MIT515 & MIT525: 10 kΩ to 20 TΩ MIT1025: 10 kΩto 20 TΩ |
| Test Voltages | MIT515 & MIT525: 250 V, 500 V, 1000 V, 2500 V, and 5000 V MIT1025: 500 V, 1000 V, 2500 V, 5000 V, and 10,000 V |
| User Defined Test Voltages | 100 kW to 10 TW |
| Insulation Range, Analog | MIT515 & MIT525:100 V to 1 kV in 10 V steps,1 kV to 5 kV in 25 V steps MIT1025:1 kV to 5 kV in 25 V steps |
| Accuracy (23º C) | MIT515 & MIT525: ±5% to 1 TΩ, ±20% to 10 TΩ MIT515 & MIT525: ±5% to 1 TΩ, ±20% to 10 TΩ |
| Voltage Output Accuracy (0ºC to 30ºC) | +4% -0% ±10 V of nominal test voltage at 1 GW load |
| Voltmeter Range | 30 to 660 V ac or dc, 50/60 Hz Accuracy: ±3% ±3 V Frequency range: 45 Hz to 65 Hz |
| Short Circuit Current | 3 mA nominal, max. power on all loads outperforming many 5 mA testers |
| Insulation Alarm | 100 kΩ to 1 GΩ |
| Current Measurement | Range: 0.01 nA to 6 mA Accuracy: ±5% ± 0.2 nA at all voltages |
| Capacitor Charge | MIT515 & MIT525: <3 s per μF at 3 mA to 5 kV MIT1025: <5 s per μF at 3 mA to 10 kV |
| Capacitor Discharge | MIT515 & MIT525: <250 ms/μF to discharge from 5000 V to 50 V MIT1025: <500 ms/μF to discharge from 10,000 V to 50 V |
| Timer Range | Up to 99 minutes, 15 seconds minimum setting |
| Memory Capacity | 5-1/2 hours continuous logging every 5 s. or 33 logged PI tests or 350 logged IR tests |
| Industry-Standard Tests | MIT515: IR, IR(t), DAR, PI MIT525 & MIT1025: IR, IR(t), DAR, PI, SV, DD, Ramp Test |
| Interface | USB type B (device) |
| USB type B (device) | USB, 1 reading/second (voltage, current and resistance) |
| Interference Rejection | MIT515 & MIT525: 1 mA per 250 V up to a maximum of 3 mA MIT515 & MIT525: 1 mA per 250 V up to a maximum of 3 mA |
| Guard Terminal | 2% error guarding 500 kΩ leakage with 100 mΩ load |
| Voltage Input Range | 85 to 265 V, 50/60 Hz, 60 VA |
| Battery Type | Lithium-ion, 11.1 V, 5.2 A hour, meets IEC 62133:2003 |
| Battery Life | MIT515 & MIT525: Typical capacity 6 hours continuous at 5 kV with a 100 MW load MIT1025: Typical capacity 4.5 hours continuous at 10 kV with a 100 MW load |
| Battery Charge Time | 2.5 hours from deep discharge, 2 hours normal discharge 30 min. quick charge: 1 hour operation at 5 kV, 100 MW |
| Safety | Meets the requirements of IEC61010-1 CAT IV 600 V Default voltmeter warns operator of applied voltage above 50 V |
| EMC | Meets the requirements of IEC61326-1 |
| Ingress Protection | Ingress Protection |
| Temperature Range | Operating: -4ºF to +122ºF (-20ºC to +50ºC) Storage: -13ºF to +149ºF (-25ºC to +65ºC) |
| Humidity Range | 90% RH @ 104ºF (40ºC) |
| Altitude | 3000 m, CAT rating maintained >2000 m* (*test load connected) |
| Dimensions | 12 in. x 11 in. x 7 in. (315 mm x 285 mm x 181 mm) |
| Weight | 10 lb. (4.5 kg) |
