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MI1000e General Purpose Insulation Tester

The MI‑1000e is a compact, lightweight, and cost-effective analog insulation resistance tester designed for general-purpose applications up to 1,000 V. It offers accurate and reliable measurements of insulation resistance up to 200 GΩ, using two test voltages: 500 V and 1,000 V.

With its taut-band analog meter, technicians can observe real-time pointer displacement—an essential visual cue for evaluating insulation degradation over time. This makes the MI1000e particularly valuable for field use and troubleshooting.

Enclosed in a durable plastic cabinet, this instrument is designed for both laboratory and field applications, providing IP65 environmental protection and excellent resistance to impact, dust, and moisture.

Key Features

  • Measures insulation resistance up to 200 GΩ

  • Two test voltages: 500 V and 1,000 V

  • Taut-band analog meter with mirror scale

  • GUARD terminal to eliminate surface leakage

  • Visual indication of dangerous voltages with auto-discharge

  • IP65 protection with lid closed

  • NiMH rechargeable battery for portability

  • Impact-resistant enclosure

Technical Specifications

Test Voltages

  • 500 V

  • 1,000 V

Maximum Resistance Readings

  • 100 GΩ @ 500 V

  • 200 GΩ @ 1,000 V

Short Circuit Current

  • 1 mA ± 2%

Test Voltage Accuracy

  • ±2% of nominal voltage (on R ≥ 1 GΩ)

Internal Current Limiting Resistance

  • 500 kΩ @ 500 V

  • 1 MΩ @ 1,000 V

Accuracy

  • Class 2 (±2% of full-scale deflection)

Analog Indicator

  • Scale length: up to 98 mm

  • Taut-band movement with mirror scale

  • Extra-fine pointer (avoids parallax)

Environmental Protection

  • IP65 (with lid closed)

Compliance

  • IEC 61010-1 (Safety)

  • IEC 61326-1 (EMC)

  • IEC 61000-4-3 (Electromagnetic Immunity)

  • IEC 61000-4-2 (Electrostatic Immunity)

Power Supply

  • Internal 7.2 V / 1500 mAh NiMH rechargeable battery

Battery Charger

  • 12 V – 1.0 A AC adapter

Operating Conditions

  • Temperature (operation): -10 °C to 50 °C (14 °F to 122 °F)

  • Temperature (storage): -25 °C to 70 °C (-13 °F to 158 °F)

  • Humidity: Up to 95% RH (non-condensing)

Physical

  • Weight: Approx. 3.52 lb (1.6 kg)

  • Dimensions: 8.70” x 7.44” x 3.89” (221 x 189 x 99 mm)

Application

  • Low-voltage electrical systems

  • Motors and transformers

  • Cables and distribution networks

  • Electromedical equipment

  • Industrial electrical maintenance

Included Accessories

  • 2 Measuring test leads

  • 1 GUARD test lead

  • 1 AC adapter / charger

  • 1 Carrying bag

  • 1 Operating instructions manual

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