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Megger MIT525 5 kV Diagnostic Insulation Resistance Tester

Megger MIT525 5 kV Diagnostic Insulation Resistance Tester

Brand
Megger
Model number
MIT525

5 kV diagnostic insulation tester to 10 TΩ with IR, DAR, PI, DD, step voltage and ramp tests, PI Predictor, time-stamped memory and USB download; mains or Li-ion battery, CAT IV 600 V.

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Key features

  • Insulation resistance up to 10 TΩ at 5 kV
  • Full suite of test modes: IR, timed IR, DAR, PI, DD, SV and ramp test
  • PI predictor function (PIp): predicts the 10-minute PI, starting as early as 3 minutes into the test
  • 3 mA short circuit current and 3 mA noise rejection
  • Advanced memory with recall to screen and real time clock for time / date stamped results
  • Insulation temperature (measured separately) can be saved with each result
  • USB download to PowerDB and CertSuite Asset
  • Dedicated voltmeter function (30 V to 660 V)
  • Dual-case design: tough outer case and inner fire retardant case, IP65 with the lid closed
  • Operates from battery or AC mains supply
  • Rapid charge Li-ion battery: more than 60 minutes of testing after a 30-minute charge
  • Large backlit display with digital and analogue readings, two rotary switches
  • Graphical quick start guide inside the lid
  • Locking HV insulated plugs and non-removable test clips
  • Safety rated CAT IV 600 V to 3000 m

Specifications

Insulation
Test voltages250 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 modesIR, IR(t), DAR, PI, SV, DD, Ramp test
Interference (noise rejection)3 mA from 450 V to 5 kV
Short circuit / charge current3 mA
Test voltage accuracy+4%, -0%, ±10 V nominal test voltage at 1 GΩ load (0 °C to 30 °C)
Display rangeAnalogue 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 range10 nF to 25 μF (test voltage above 500 V), ±10% ±5 nF
Current range0.01 nA to 6 mA, ±5% ±0.2 nA at all voltages (20 °C)
Insulation test alarm100 kΩ to 10 GΩ
Timer rangeUp to 99 minutes 59 seconds, 15 second minimum setting
Voltmeter
Range30 V to 660 V AC or DC, 45 Hz - 65 Hz
Accuracy±3%, ±3 V
General
PowerRechargeable 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 time2.5 hours deep discharge, 2 hours normal discharge
Battery life6 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
Humidity90% RH non-condensing at 40 °C
IP ratingIP65 (lid closed), IP40 (lid open)
SafetyCAT IV 600 V to 3000 m altitude; meets IEC 61010-1
Dimensions315 x 285 x 181 mm
Weight4.5 kg
Memory
Capacity5.5 hours logging at 5 second intervals, with time / date stamp
InterfaceUSB type B (device), fully isolated
Real time output1 Hz output readings (V, I, R)
Supplied with
ContentsPower lead; USB cable; 3 m lead set with medium size insulated clips; Calibration certificate

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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