5kV-200GΩ Digital Insulation Tester ( HTC – 6250IN )

Description

The HTC 6250IN Digital Insulation Tester is a high-voltage, multi-function instrument engineered for electricians, maintenance teams, utility technicians, and industrial inspectors who require precise insulation analysis. Built around a rugged, hand-held design, it supports insulation resistance testing up to 200 GΩ at selectable test voltages of 1,000 V, 2,500 V, or 5,000 V, offering unmatched range and flexibility in assessing the dielectric health of cables, transformers, motors, switchboards, and control gear.

The tester features a clear 3½-digit LCD display with 1,999-count resolution, tall, backlit digits for enhanced readability in dim or bright environments, along with data hold and auto‑ranging functions for ease of use in fast-paced testing environments. Together, these help ensure that accurate readings are captured consistently, even in challenging field conditions.

On the insulation testing side, the DIT delivers measurements from a minimum of 0.1 MΩ up to a maximum of 200 GΩ, with a minimum resolution of 0.01 MΩ. Its accuracy in the lower resistance range is rated at ±(3% of reading + 5 digits), making it suitable for high-sensitivity assessments in preventive maintenance or safety compliance checks.

In addition to insulation resistance, the 6250IN also supports AC voltage testing from 0 to 700 V at a resolution of 1 V and an accuracy rating of ±(2.0% + 5 digits), allowing users to verify supply voltage levels safely prior to insulation evaluation. A built-in phase sequence detector further extends functionality, enabling checks of wiring orientation in systems operating between 100 V and 450 V at 40–60 Hz.

Construction-wise, the instrument is approximately 150 mm tall × 100 mm wide × 70 mm deep, and weighs under 400 g, ensuring excellent portability. It runs on standard AA batteries, with a bundled carrying case, test leads, and user manual included for immediate field deployment.

Safety is prioritized through low short-circuit current design (< 2 mA), which minimizes the risk of tripping protective relays or damaging sensitive circuits. Insulation withstand voltage between the test output and casing is built to withstand high potential, in line with industry-level dielectric requirements.

The tester is built for reliability and durability: its firmware supports auto-shutdown and overload indication (“OL”) to prevent misuse, while environmental design ensures operation in standard temperature and humidity ranges typically found on-site.

Key Features & Benefits

• Wide insulation resistance range from 0.1 MΩ to 200 GΩ across selectable test voltages of 1 kV, 2.5 kV, and 5 kV for flexible diagnostics.

• 3-in-1 instrument: Insulation measurement, AC voltage testing, and phase rotation detection—all in one handheld unit.

• Accuracy and resolution: 0.01 MΩ resolution with ±(3% + 5 digits) accuracy ensures reliable fault detection even at low insulation levels.

• Backlit 3½-digit display (1,999-count) with clear readout and data hold capability for reading retention in poor lighting conditions.

• Auto-ranging and auto‑power-off features for intuitive operation and extended battery life during field use.

• Built-in AC voltage range (0–700 V) with ±(2.0% + 5 digits) accuracy, protecting both user and instrument before insulation tests.

• Phase sequence detection between 100–450 V (40–60 Hz), enabling wiring orientation checks without external instruments.

• Low-current excitation (<2 mA) to avoid tripping earth leakage devices, supporting sensitive application environments.

• Portable and ergonomic: Lightweight form factor (~150 × 100 × 70 mm; <400 g) with soft grip and one-handed operation.

• Complete accessory package: Carrying case, test leads, and manual included in the standard set.

• Safety rated for insulation-to-case voltage withstand and short-circuit current control, supporting reliable high-voltage testing.

Ideal Applications

The HTC 6250IN is the perfect choice for professionals needing comprehensive insulation diagnostics in the following scenarios:

• Testing cable or motor winding insulation integrity at 1 kV/2.5 kV/5 kV to detect moisture ingress, aging, or insulation breakdown.

• Evaluating high-voltage installations—such as distribution boards, switchgear, and transformers—for preventive maintenance and commissioning.

• Performing phase rotation checks to verify wiring that ensures motor direction and system integrity during installations.

• Checking hybrid control panels or solar installations where multi-voltage insulation testing is required before energization or maintenance.

• Capturing accurate insulation values in areas with poor lighting thanks to backlit display and wide readability.

• Facilitating fast and safe testing without needing multiple instruments—reducing tool inventory while increasing productivity.

In summary, the HTC 6250IN Digital Insulation Tester delivers professional-grade insulation resistance measurement, phase testing, and AC voltage verification in one robust, portable device. With its extensive voltage range—all the way to 5 kV—high resistance limit of 200 GΩ, user-friendly interface, and thoughtful safety features, it stands out as a reliable partner for advanced maintenance and testing in power-critical environments.