Insment KS-53DH 1000V Comparative Tracking Index (CTI) and Proof Tracking Index (PTI) Tester
| Brand | Insment |
|---|---|
| Origin | Shanghai, China |
| Model | KS-53DH |
| Voltage Range | Up to 1000 V AC/DC |
| Test Standard Compliance | IEC 60112, ASTM D3638, GB/T 4207 |
| Measurement Target | Electrical Insulating Materials |
| Primary Output | CTI and PTI Values (in V) |
| Application Domain | Electronics & Electrical Equipment Manufacturing, PCB Substrate Validation, Plastic Component Certification |
| Enclosure Type | Integrated Combustion Test Chamber with Fume Extraction Interface |
| Power Supply | 220 V ±10%, 50/60 Hz |
| Safety Features | Interlocked Door Switch, Emergency Stop Button, Overcurrent Protection, Ground Fault Circuit Interrupter (GFCI) |
Overview
The Insment KS-53DH is a precision-engineered Comparative Tracking Index (CTI) and Proof Tracking Index (PTI) tester designed for evaluating the electrical resistance of solid insulating materials to surface tracking under high-voltage, humid, and contaminant-exposed conditions. Based on the fundamental principle of controlled electrolytic contamination—where a standardized ammonium chloride solution is dripped onto the specimen surface while an applied voltage induces progressive carbonization—the instrument quantifies the material’s ability to withstand conductive path formation. This test directly informs safety-critical design decisions in low-voltage electronic enclosures, printed circuit board substrates, connector housings, and motor insulation systems. The KS-53DH implements the standardized electrode geometry (5 mm tip radius, 4 mm spacing), calibrated droplet volume (±0.05 mL per drop), and precise timing control required by IEC 60112:2020, ASTM D3638-21, and GB/T 4207–2019. Its integrated chamber architecture ensures reproducible environmental control (ambient temperature/humidity monitoring), consistent droplet impact dynamics, and operator isolation during hazardous arc events.
Key Features
- Fixed 1000 V AC/DC high-voltage output with digital voltage regulation and real-time monitoring (±1% accuracy)
- Automated solenoid-controlled droplet delivery system with adjustable interval (30–60 s) and programmable total drop count (1–500 drops)
- Integrated fume extraction interface compatible with standard laboratory ducting (Ø100 mm connection)
- Interlocked safety door with hardware-enforced power cutoff upon opening
- Dual-channel thermal monitoring (specimen surface + chamber ambient) with data logging capability
- Emergency stop button meeting IEC 60204-1 mechanical actuation requirements
- Ground fault circuit interrupter (GFCI) and overcurrent protection embedded at main power input
- Corrosion-resistant stainless steel electrodes (IEC-specified dimensions) with quick-release mounting
Sample Compatibility & Compliance
The KS-53DH accommodates flat, rigid specimens measuring 100 mm × 100 mm × 3–6 mm thick, including thermoplastics (e.g., PBT, PA66, PC), thermosets (e.g., epoxy resins, phenolics), laminates (e.g., FR-4), and filled polymer composites. Specimen mounting fixtures ensure uniform electrode contact pressure and dimensional repeatability. All operational protocols align with IEC 60112 Annex B (CTI determination via stepwise voltage reduction) and Annex C (PTI verification at fixed voltage). The system supports full audit trails for GLP-compliant laboratories and meets essential safety requirements under EN 61010-1 for electrical equipment used in measurement, control, and laboratory applications.
Software & Data Management
While the KS-53DH operates as a standalone hardware platform with front-panel digital controls and LED status indicators, it includes RS-232 and optional USB-to-serial interfaces for integration with external data acquisition software. Voltage, elapsed time, drop count, and thermal readings can be streamed in ASCII format for timestamped CSV export. Instrument configuration parameters (voltage setpoint, drop interval, test duration) are stored in non-volatile memory and survive power cycling. For regulated environments, optional firmware upgrades support 21 CFR Part 11–compliant electronic signatures and user-access-level permissions when paired with validated third-party LIMS or ELN platforms.
Applications
- Qualification of flame-retardant polymeric housing materials for consumer electronics and industrial controllers
- Validation of PCB substrate tracking resistance prior to UL 94 and IEC 60695-2-10 certification
- Comparative screening of halogen-free vs. brominated flame retardant formulations
- Quality assurance testing for automotive ECU enclosures exposed to under-hood humidity and salt mist
- Research into nanofiller-enhanced dielectric stability in polymer nanocomposites
- Supporting failure analysis investigations where surface tracking preceded thermal runaway in power modules
FAQ
What standards does the KS-53DH fully support?
IEC 60112:2020, ASTM D3638-21, GB/T 4207–2019, and UL 746A Annex A for comparative tracking index evaluation.
Is calibration documentation provided with shipment?
Yes—each unit ships with a factory calibration certificate traceable to NIM (National Institute of Metrology, China) for voltage output and droplet volume, valid for 12 months.
Can the instrument operate continuously for extended qualification tests?
Yes; thermal management subsystems and duty-cycle optimized power electronics enable uninterrupted operation up to 500-drop sequences without performance drift.
What maintenance is required between tests?
Electrode cleaning with isopropyl alcohol after each test series, periodic inspection of solenoid valve seal integrity, and annual verification of high-voltage insulation resistance (>100 MΩ at 1000 V DC).
Does the system include test report generation functionality?
Raw data export is supported; formal test reports must be generated externally using validated templates compliant with ISO/IEC 17025 documentation requirements.
