GT5307B Insulation Resistance Tester Megohmmeter Circuit Test High Precision Electronic Shake Meter 1000V

General Features

• Digital insulation and continuity tester.

• Measures insulation resistance, AC/DC voltage, and low resistance.

• Large LCD display with backlight and over-limit indication.

• Automatic and manual range selection.

• Audible and visual alarms for high voltage, over-limit, and continuity.

• Auto discharge after insulation testing.

• Short-circuit protection on resistance measurement.

• Sampling rate: 2 times per second.

• Power supply: 6 × 1.5 V AA batteries or external DC power input.

• Designed for field and laboratory use in testing cables, motors, transformers, and electrical installations.

• Safety rating: typically CAT III 600 V.

Measurement Specifications

Insulation Resistance

• Test voltage: DC 1000 V

• Measuring range: up to 1000 MΩ or higher

• Accuracy: ±(4% + 2 digits)

• Short-circuit current: approximately 1.6 mA

• Auto discharge after measurement

Voltage Measurement

• AC/DC voltage range: 0 – 750 V

• Accuracy: ±(1% + 6 digits)

• Frequency range: 45 – 200 Hz

Low Resistance Measurement

• Range: 0 – 20 Ω (approx.)

• Accuracy: ±(2% + 2 digits)

Environmental Conditions

• Operating temperature: 0 °C – 40 °C

• Operating humidity: ≤ 85% RH (non-condensing)

• Storage temperature: –20 °C – 60 °C

• Storage humidity: ≤ 90% RH

• Maximum operating altitude: up to 2000 m

Electrical Protection

• Withstand voltage: AC 6000 V (50/60 Hz) for 5 s between circuit and case.

• Overload protection:

  • Insulation range: AC 1200 V for 10 s

  • Voltage range: AC 720 V for 10 s

Physical Specifications

• Dimensions: approximately 176 × 110 × 77 mm

• Weight: around 600 g (including batteries)

• Casing: durable ABS plastic with protective rubber cover