Digital Insulation Tester ( HTC – 6350IN )

Description

The HTC 6350IN Digital Insulation Resistance Tester is a professional-grade instrument engineered to deliver high-precision insulation testing up to 5 kV, making it perfect for electrical systems diagnostics, preventive maintenance, and safety inspections. Designed for electricians, industrial technicians, and infrastructure auditors, this multifunction device combines insulation resistance measurement, AC voltage testing, and phase-check functionality within a single portable enclosure.

Housing a robust 3½-digit LCD display with up to 1,999-count resolution, the tester features tall, backlit digits for clear readability in dim or bright environments. Fast response and intuitive feedback are supported by built-in Data Hold and Auto-Ranging, enabling accurate reading snapshots and efficient operation across its complete voltage range.

The heart of the 6350IN’s functionality is its multi-voltage insulation range. Operators can select from six test voltages—100 V, 250 V, 500 V, 1000 V, 2500 V, or 5000 V—tailored to specific system voltages and safety requirements. Depending on the selected test voltage, the insulation resistance measurement extends from 0.1 MΩ up to 200 GΩ. For lower voltages (100/250/500 V) the maximum range is 20 GΩ, while higher voltages (1 kV and above) permit readings up to 200 GΩ. Resolution is consistently 0.01 MΩ, with accuracy rated at ±(3% reading + 5 digits) for 0.1–200 MΩ, ±(5% + 10 digits) for 200 MΩ–10 GΩ, and ±(10% + 5 digits) for 10–200 GΩ..

Integrated AC voltage testing from 0 to 600 V allows users to verify line voltage before applying high insulation test voltage. This mode offers 1 V resolution and ±(2.0% + 5 digits) accuracy—crucial for ensuring energized circuits are safely de-energized prior to insulation testing.

Built for safety, the tester employs a short-circuit current of less than 2 mA, preventing nuisance tripping of protective devices in sensitive circuits. Its design meets IEC CAT II standards up to 1 kV, and features high internal insulation, spark protection, and overload indication (“OL”) to safeguard both the instrument and the operator.

Powered by eight rechargeable AA batteries, the HTC 6350IN can also operate via a 9 V DC adapter, offering extended runtime for prolonged testing sessions. Backup features like automatic shutdown and a low-battery indicator help preserve accuracy and prevent power-related interruptions in the field.

Despite packing high-voltage capabilities, the instrument remains portable and user-friendly. Measuring roughly 190 × 155 × 75 mm and weighing under 900 g, it includes an ergonomic grip, backlit display, and intuitive rotary selector for choosing test voltage or mode. A protective soft carrying case, test leads, rechargeable batteries, and user manual are supplied out of the box.

Despite packing high-voltage capabilities, the instrument remains portable and user-friendly. Measuring roughly 190 × 155 × 75 mm and weighing under 900 g, it includes an ergonomic grip, backlit display, and intuitive rotary selector for choosing test voltage or mode. A protective soft carrying case, test leads, rechargeable batteries, and user manual are supplied out of the box.

Use scenarios for the HTC 6350IN span a wide range:

• Comprehensive insulation testing of high-voltage equipment such as transformers, large motors, switchboards, and HVAC systems

• Verification of cable, connector, and splice insulation integrity during preventive maintenance or commissioning

• Pre-test analysis of supply voltage to avoid hazardous testing on live circuits

• Phase-sequence or rotation testing (if integrated in select variants) in multi-phase installations to ensure proper motor direction and wiring correctness

• Field inspection or generator acceptance testing with ease of use in varying lighting conditions supported by the illuminated display and long-distance readability

Professional Advantages & Features at a Glance:

• Multi-voltage range from 100 V to 5 kV, selectable per application

• Insulation resistance range from 0.1 MΩ up to 200 GΩ, with fine 0.01 MΩ resolution

• Accuracy suited to both low-impedance and high-capacitance loads, ensuring reliable diagnostics

• Built-in AC voltage detection up to 600 V for live-circuit verification

• Safety-first design: low test current, overload display, compliance with CAT II 1 kV insulation standards

• Ergonomic form factor, rechargeable battery operation, and backlit display for field convenience

• Key usability functions: Auto Ranging, Data Hold, Auto-Off, and Low Battery Warning

• Comprehensive accessory kit for immediate deployment including test leads and power adaptor

In summary, the HTC 6350IN combines powerful insulation diagnostics with intuitive design, comfort, and safety features—making it a standout solution for professionals needing dependable insulation testing up to 5 kV. Whether used for commissioning, maintenance, or compliance checks, it offers precise measurement capability in a field-ready, rugged package.