Megger MIT300 Insulation and Continuity Tester, 250/500V, 999 MOhm (173514)

Features

• Digital/analogue combined display — large 20 mm high numerical characters with analogue bar-graph arc give the familiar feel of an analogue instrument with true analogue response, ideal for users transitioning from moving-coil testers
• Insulation test voltages of 250 V and 500 V DC covering all requirements for domestic and commercial installations
• Measures insulation resistance from 10 kΩ to 999 MΩ with ±3% accuracy up to 10 MΩ — meets BS 7671 IEE Wiring Regulation test requirements
• 200 mA continuity testing with fast-reacting buzzer (operates at <5 Ω) and lead-nulling facility for accurate low-resistance measurements
• Comprehensive Megger Intelligent Safety System (ISS): Safety Interlock prevents unsafe lead connection, Safe Contact Detectors protect the instrument when connected to live circuits on continuity setting, live voltage warning (>25 V) before any test is applied
• Automatic circuit discharge after insulation testing removes hazardous charge from the test object
• Test inhibit function operates automatically when a live voltage is detected — prevents accidental insulation testing on live circuits
• Auto power down after 10 minutes of standby reduces battery consumption
• Rigid protective display cover folds fully back during testing and locks down to protect the display when not in use
• Rugged impact-resistant rubber-overmoulded case designed for tough site use
• IP54 weatherproofing for outdoor use
• CAT III 600V per IEC 61010-1
• Supplied with calibration certificate

Technical Information

• Test Voltages 250V DC, 500V DC
• Insulation Range 10 kΩ to 999 MΩ (all ranges)
• Short Circuit Current 1.5 mA nominal
• Test Current on Load 1 mA at minimum pass values (BS7671/IEC 364)
• Accuracy ±3% ±2 digits to 10 MΩ, ±5% to 100 MΩ, ±30% to full scale
• Continuity Range 0.01 Ω to 99.9 Ω
• Continuity Short Circuit Current 205 mA (+10/-5 mA)
• Continuity Accuracy ±3% ±2 digits
• Continuity Buzzer <5 Ω, response <20 ms
• Safety Rating CAT III 600V per IEC 61010-1
• Ingress Protection IP54
• Operating Temperature -10°C to +60°C
• Dimensions (WxHxD) 203 x 148 x 78 mm
• Weight 980 g

Items Included

• MIT300 Insulation and Continuity Tester
• Test Lead Set
• Batteries
• Calibration Certificate
• User Guide

Downloads

Datasheet