Enamelled Wire Softening Breakdown Tester
The Enamelled Wire Softening Breakdown Tester is a specialized instrument used to evaluate the insulation performance of enamelled round wires under thermal softening conditions. It integrates temperature control, voltage application, and automatic testing functions, ensuring accurate and repeatable breakdown testing for wires with diameters ranging from 0.020 mm to 3.000 mm.
Application
This Enamelled Wire Softening Breakdown Tester is widely used in electrical and materials testing fields:
Magnet wire manufacturing: enamelled copper and aluminum wires
Transformer and motor windings: insulation performance verification
Cable and wire industry: film-wrapped round wire testing
Quality inspection laboratories: insulation reliability evaluation
Research institutions: thermal aging and breakdown analysis of insulating materials
Standards
(1) GB/T 4074.6-2008 — Test methods for winding wires (softening breakdown)
(2) IEC 60851-6:1996 — Methods of test for winding wires
(3) JB/T 4279.8-2008 — Testing instruments for winding wires
(4) GB/T 6109-2008 — Winding wires general requirements
Parameters
| Category | Specification |
|---|---|
| Applicable Wire Diameter | 0.020–3.000 mm |
| Heating Mold Size | 100 × 100 × 70 mm |
| Groove Angle | 90° |
| Test Voltage | AC 100 ± 10 V |
| Breakdown Current | (5 ± 0.5) mA |
| Short-circuit Current | < 50 mA |
| Temperature Range | Room temperature to 500°C |
| Temperature Control Accuracy | < 2°C deviation |
| Preheating / Test Time | 0–999 s (adjustable) |
| Timing Accuracy | ±1 s (within 120 s) |
| Heating Power | 900 W |
| Power Supply | AC 220 V ± 10%, 50 Hz |
| Environment | 0–40°C, ≤85% RH |
| Dimensions | 540 × 310 × 345 mm |
| Weight | 32 kg |
Features
(1) Fully automatic testing process including preheating, loading, voltage application, and unloading
(2) Precise temperature measurement with automatic constant temperature control
(3) Adjustable test temperature and time for flexible testing conditions
(4) Audible and visual alarm upon breakdown or test completion
(5) Built-in forced air cooling for improved testing efficiency
(6) Brass heating mold ensures stable thermal performance and durability
Maintenance Information
(1) Keep the heating mold clean and free from residue
(2) Regularly check temperature sensors and control accuracy
(3) Inspect electrical connections and replace worn components
(4) Ensure proper ventilation and cooling system operation
(5) Perform routine calibration to maintain measurement reliability
FAQ
(1) What is the Enamelled Wire Softening Breakdown Tester?
The Enamelled Wire Softening Breakdown Tester is a testing device designed to measure the insulation breakdown performance of enamelled wires after thermal softening. It combines heating, loading, and electrical testing in one system, enabling accurate evaluation of insulation quality.
(2) What is the Enamelled Wire Softening Breakdown Tester used for?
This tester is used to assess how enamelled wire insulation performs under high temperature conditions. It is widely applied in manufacturing, quality control, and research to ensure wires meet safety and performance standards.
(3) What is the working principle of the Enamelled Wire Softening Breakdown Tester?
The tester heats the wire sample to a specified temperature, applies mechanical load and electrical voltage, and monitors for insulation breakdown. The breakdown is detected when current reaches a preset threshold, indicating insulation failure.
(4) Why is the Enamelled Wire Softening Breakdown Tester important?
This tester is important because it ensures the reliability of wire insulation under thermal stress. It helps manufacturers detect defects, improve product quality, and comply with international testing standards.
(5) Which industries is the Enamelled Wire Softening Breakdown Tester suitable for?
The tester is suitable for industries such as electrical equipment manufacturing, transformer and motor production, wire and cable manufacturing, and research laboratories focused on insulation materials and performance testing.
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