English Product Name
| Brand | North Guang Jing Yi / All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | BLD-600V |
| Price | USD 2,150 (approx.) |
| Input Voltage | 220 V AC |
| Power Rating | 5 kVA |
| Test Voltage Range | 100–600 V AC (50/60 Hz) |
| Voltage Drop | ≤5% |
| Electrode Spacing | (50 ± 0.5) mm |
| Electrode Material | Stainless Steel |
| Sample Capacity | 5 specimens simultaneously |
| Leakage Current Threshold | User-adjustable, with independent over-current cutoff per channel |
| Droplet Volume & Interval | Programmable via precision peristaltic pump |
| Short-Circuit Current | ≥60 mA for ≥2 s |
| Filter Paper Thickness | 0.15–0.17 mm |
| Chamber Internal Volume | ≥0.75 m³ with tempered glass observation window |
| Compliance Standards | IEC 60112:2003, IEC 60587:1984, GB/T 6553–2003, GB/T 3048.7–2007, UL 746A, ASTM D3638–92, DIN 53480 |
Overview
The North Guang Jing Yi BLD-600V AC/DC Tracking Resistance Tester is an engineered solution for evaluating the comparative tracking index (CTI) and proof tracking index (PTI) of solid insulating materials under high-voltage stress in the presence of conductive contaminants. Based on the principle of electrical tracking—where surface degradation initiates due to localized dry-band arcing, carbonization, and progressive conductive path formation—the instrument replicates real-world failure mechanisms observed in outdoor insulators, terminal blocks, PCB substrates, and housing materials exposed to humidity, dust, and ionic pollutants. Designed for operation at power-frequency AC (48–62 Hz), it enables standardized assessment of material resistance to electrochemical erosion under controlled electrolyte droplet application, electrode geometry, and voltage ramping protocols. Its architecture supports rigorous conformance to international test methodologies governing safety-critical electrical components in industrial, automotive, and consumer electronics applications.
Key Features
- Simultaneous five-channel testing with fully independent control loops—each channel features dedicated high-voltage isolation, current monitoring, and automatic shutdown upon exceeding user-defined leakage thresholds, without interrupting concurrent tests on other specimens.
- Siemens S7-1200 PLC-based core controller with opto-isolated analog input modules ensures electromagnetic immunity in high-noise laboratory environments, guaranteeing stable acquisition of voltage and leakage current signals (±0.5% full-scale accuracy).
- 9-inch industrial-grade capacitive touchscreen HMI provides real-time visualization of per-channel parameters: applied voltage, instantaneous leakage current, elapsed time, droplet count, and system status—enabling immediate operator intervention or protocol adjustment.
- Programmable peristaltic dosing system allows precise, repeatable delivery of ammonium chloride (NH₄Cl) solution (0.1% w/v) with adjustable droplet volume (10–50 µL) and inter-droplet interval (20–30 s), compliant with IEC 60112 Annex A requirements.
- Manual coarse/fine voltage regulation via dual-stage autotransformer and precision potentiometer enables smooth, stepless adjustment from 100 V to 600 V AC with ≤5% voltage sag under load.
- Integrated forced-air exhaust system with explosion-proof fan and LED task lighting ensures operator safety during extended high-voltage operation and facilitates visual inspection of tracking progression through the laminated safety glass viewport.
Sample Compatibility & Compliance
The BLD-600V accommodates flat, rigid specimens up to 15 mm thick and 100 mm × 100 mm in planar dimension, including thermoplastics (e.g., PBT, PA66), thermosets (e.g., epoxy, phenolic), laminates (e.g., FR-4), and elastomeric insulators. All test fixtures—including stainless-steel electrodes (IEC-compliant 5 mm radius tip, 50 mm spacing), standardized filter paper (0.15–0.17 mm thickness, ISO 9001-certified), and calibrated conductivity meter—meet dimensional and material tolerances specified in IEC 60112 and GB/T 6553. The system is validated for full traceability under GLP-aligned laboratory practices and supports audit-ready documentation for ISO/IEC 17025-accredited testing laboratories. It satisfies mandatory pre-compliance screening for UL Recognition, CE marking (Low Voltage Directive), and RoHS-conformant component qualification.
Software & Data Management
While the embedded HMI operates standalone, optional Ethernet-enabled data logging firmware (firmware v2.3+) permits CSV export of timestamped voltage, current, and event logs (e.g., droplet triggers, over-current trips, shutdowns) to external PCs. Raw datasets include millisecond-resolution current waveforms during arcing events—critical for root-cause analysis of tracking onset. Audit trails record operator ID, parameter changes, and calibration dates in accordance with FDA 21 CFR Part 11 principles (electronic signatures and change control available via add-on module). All configuration files are stored in non-volatile memory with checksum validation to prevent corruption during power interruption.
Applications
- CTI/PTI classification of polymer compounds used in switchgear housings, connector bodies, and motor terminal boards per IEC 60112 pass/fail criteria.
- Comparative evaluation of flame-retardant additives (e.g., alumina trihydrate, phosphinate salts) on tracking resistance retention after thermal aging (IEC 60216).
- Qualification testing of conformal coatings and potting compounds for aerospace wiring harnesses subjected to salt fog + high-potential stress.
- R&D validation of nanocomposite dielectrics where filler dispersion homogeneity directly influences surface resistivity decay kinetics.
- Production line QA sampling for injection-molded insulators, ensuring batch-to-batch consistency against established CTI baselines.
FAQ
What standards does the BLD-600V fully support?
It implements test sequences and hardware specifications required by IEC 60112:2003, IEC 60587:1984, GB/T 6553–2003, GB/T 3048.7–2007, UL 746A, ASTM D3638–92, and DIN 53480—with documented traceability to NIM (National Institute of Metrology, China) calibration references.
Can the instrument perform DC tracking tests?
No—the BLD-600V is configured exclusively for AC (50/60 Hz) high-voltage tracking per standard mandates; DC tracking requires separate equipment with regulated DC source and polarity-reversal capability.
Is third-party calibration certification included?
Factory calibration is performed using Fluke 8508A multimeters and HV dividers traceable to CNAS-accredited labs; formal ISO/IEC 17025 calibration certificates are available as a billable option.
How is specimen conditioning handled prior to test?
The unit does not include environmental conditioning; users must precondition samples per IEC 60216 (23°C/50% RH, 48 h minimum) using external climate chambers before insertion.
What maintenance intervals are recommended?
Electrode polishing every 20 test cycles, filter paper holder cleaning after each run, and annual verification of transformer insulation resistance (>100 MΩ @ 1 kV DC) are advised per maintenance logbook (included).
