Megger MIT525/2 Advanced 5 kV Insulation Resistance Tester
- Brand
- Megger
- Model number
- MIT525/2
- Category
- Insulation Resistance Testers
Advanced 5 kV insulation tester to 10 TΩ with IR, DAR, PI, DD, step voltage, ramp and PDC tests, PI Predictor and RE>Act mode, memory with USB and Bluetooth export; up to 6 mA noise rejection.
Price and availability on request
Key features
- Insulation resistance up to 10 TΩ at 5 kV, ±5% accuracy up to 1 TΩ
- Test modes IR, timed IR, DAR, PI, DD, SV, ramp test and PDC (with software)
- Patented PI predictor function (PIp): predicts the 10-minute PI, starting as early as 3 minutes into the test
- RE>Act mode measures reabsorption current, avoiding falsely high or low readings and monitoring discharge after a test
- Selectable charge / burn current of 1 mA, 3 mA (default) or 6 mA (6 mA from mains supply only)
- 6 mA noise immunity, for sites up to 230 kV
- Internal memory with time / date stamp; temperature value stored
- Transfer results by USB or Bluetooth to PowerDB or CertSuite Asset (CertSuite Asset Lite free)
- Custom colour display, two rotary switches, quick start guide in the lid
- Five levels of voltage warning; live circuit detection and locking terminals
- Dual-case design: tough outer case and fire retardant inner case; IP65 with the lid closed
- Operates from battery or AC mains; 30-minute quick charge gives 1 hour of testing at 5 kV
- Safety rated CAT IV 600 V to 3000 m
Specifications
| Test voltages | 250 V, 500 V, 1000 V, 2500 V, 5000 V and user defined (40 V to 1 kV in 10 V steps, 1 kV to 5 kV in 25 V steps) |
|---|---|
| Accuracy (23 °C) from 1 MΩ to | ±5%: 1 TΩ at 5000 V, 500 GΩ at 2500 V, 200 GΩ at 1000 V, 100 GΩ at 500 V, 50 GΩ at 250 V; ±20%: 10 TΩ at 5000 V, 5 TΩ at 2500 V, 2 TΩ at 1000 V, 1 TΩ at 500 V, 500 GΩ at 250 V |
| Test modes | IR, IR(t), DAR, PI, SV, DD, PDC, Ramp test |
| Short circuit / charge current | 1 mA, 3 mA (default), 6 mA at 5 kV (6 mA only from mains supply) |
| Interference (noise rejection) | 6 mA from 450 V to 5 kV |
| Guard terminal | At 100 GΩ and 5000 V, guards out current at least 5000 times the test current with a maximum additional error of 1% |
| RE>Act | Reabsorption current measurement; operational up to 30 V external applied |
| Test voltage accuracy | +4%, -0%, ±10 V nominal test voltage at 1 GΩ load (0 °C to 30 °C) |
| Display range | Analogue 100 kΩ to 10 TΩ; digital 10 kΩ to 10 TΩ |
| Capacitor charge | <3 s/μF at 3 mA to 5 kV |
| Capacitor discharge | <250 ms/μF to discharge from 5 kV to 50 V |
| Capacitance range | 10 nF to 25 μF (test voltage above 500 V), ±10% ±5 nF |
| Current range | 0.01 nA to 6 mA, ±5% ±0.2 nA at all voltages (20 °C) |
| Insulation test alarm | 100 kΩ to 10 GΩ |
| Timer range | Up to 99 minutes 59 seconds, 15 second minimum setting |
| Range | 30 V to 660 V AC or DC, 45 Hz - 65 Hz |
|---|---|
| Accuracy | ±3%, ±3 V |
| Power | Rechargeable 10.8 V, 5.2 Ah Li-ion battery (meets IEC 62133:2003), or 90-264 V rms, 47-63 Hz, 100 VA AC supply |
|---|---|
| Battery charge time | 2.5 hours deep discharge, 2 hours normal discharge |
| Battery life | 6 hours (typical) continuous testing at 5 kV with a 100 MΩ load |
| Operating temperature | -20 °C to 50 °C |
| Storage temperature | -25 °C to 65 °C |
| Humidity | 90% RH non-condensing at 40 °C |
| IP rating | IP65 (lid closed), IP40 (lid open) |
| Safety | CAT IV 600 V to 3000 m altitude; meets IEC 61010-1 |
| Dimensions | 315 x 285 x 181 mm |
| Weight | 4.5 kg |
| 30 min quick charge | 1 hour operation at 5 kV with a 100 MΩ load |
| Capacity | 5.5 hours logging at 5 second intervals, time / date stamped |
|---|---|
| Interface | USB type B (device), Bluetooth Class 2 |
| Real time output | 1 Hz output readings (V, I, R) |
| Contents | Quick start label; Power lead; Screened USB cable with filters; 3 kV lead set, 3 x 3 m, with medium clips; Lid mounted pouch |
|---|
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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