Megger MIT1025 10kV Insulation Resistance Tester

The Megger MIT1025 10kV Insulation Resistance Tester is a high-performance, precision instrument designed for accurate testing of insulation in high-voltage electrical systems. Built for professionals in power utilities, industrial plants, and maintenance engineers, this tester ensures reliable insulation diagnostics to safeguard equipment and personnel.

Equipped with a test voltage range up to 10 kV, the MIT1025 allows users to measure insulation resistance on transformers, cables, motors, switchgear, and other high-voltage apparatus with confidence. Its advanced microprocessor-controlled design delivers fast, stable readings, minimizing errors caused by environmental factors or operator handling.

Key features include a large, easy-to-read display, intuitive user interface, and multiple test functions such as insulation resistance, PI (Polarization Index), and DAR (Dielectric Absorption Ratio) measurements. Built for both field and laboratory use, the MIT1025 offers robust construction, excellent portability, and long battery life, making it an indispensable tool for ensuring electrical system reliability and compliance with international standards.

With the Megger MIT1025, engineers can perform high-voltage insulation testing safely, efficiently, and with confidence, protecting critical equipment and reducing the risk of electrical failures.

Specifications

Test Voltage & Measurement Range

DC Test Voltage: 500 V, 1 kV, 2.5 kV, 5 kV, and 10 kV (user-defined also available)
Resistance Range (digital): 10 kΩ to 20 TΩ
Resistance Range (analogue): 100 kΩ to 10 TΩ

Accuracy & Performance

Resistance Accuracy: ±5 % up to 2 TΩ, ±20 % up to 20 TΩ
Output Voltage Accuracy: +4 % / -0 % ± 10 V at 1 GΩ load
Voltmeter Range: 30 V–660 V AC/DC
Voltmeter Accuracy: ±3 % ± 3 V
Measurement Current Range: 0.01 nA – 6 mA
Short-Circuit Current: 3 mA (nominal)
Resistance Limit Alarm: 100 kΩ – 1 GΩ

Test Modes & Functions

Test Modes: IR, IR(t), DAR, PI, DD, SV, Ramp
Capacitance Measurement (above 500 V): 10 nF – 25 µF
Capacitance Charging Time: <5 s/µF to 10 kV
Fast Capacitance Discharge after test

Memory & Interface

Data Logging Capacity: ~5.5 hours (5-second interval)
Interface: USB Type-B (for data transfer & real-time output)

Power & Operation

Power: AC Adapter (85–264 V, 50/60 Hz) + Rechargeable Li-ion Battery
Battery Charging Time: ~2.5 hours; continuous test operation ≥4.5 hours (depending on load)

Environment & Safety

Operating Temperature: ‑20 °C to +50 °C
Storage Temperature: ‑25 °C to +65 °C
Humidity: Up to 90 % RH non-condensing
Protection Class: IP65 (lid closed); IP40 (lid open)
Operating Altitude: Up to 3000 m
Safety Rating: CAT IV 600 V per IEC 61010‑1

Physical & Display

Large backlit LCD for clear visibility
Portable design suitable for field and laboratory use

10kV Tester

Buy Megger MIT1025 10kV