IEC 60335-2-79 Clause 18.103 & 18.104 Capacitors Endurance Test Apparatus Technical Specification

Overview

This technical specification details a high-precision Capacitors Endurance Test Apparatus designed for compliance with IEC 60335-2-79, Clauses 18.103 and 18.104. The apparatus tests capacitors in high-pressure cleaning appliances, ensuring durability under cyclic electrical stress. Optimized for reliability and safety, it meets rigorous industry standards.

Purpose

The apparatus verifies capacitor endurance in household appliances per IEC 60335-2-79. It simulates real-world conditions through repeated charge-discharge cycles, ensuring capacitors meet safety and performance requirements outlined in Clauses 18.103 and 18.104.

Scope

This endurance test equipment is tailored for capacitors (0.1 µF to 100 µF) used in high-pressure cleaners and steam cleaners. It conducts automated, repeatable tests to validate performance under electrical and environmental stress.

Applicable Standards

• IEC 60335-2-79: Safety requirements for high-pressure cleaners and steam cleaners.
• Clause 18.103: Endurance testing for cyclic capacitor operation.
• Clause 18.104: Insulation and performance under stress conditions.

Technical Specifications

Electrical Specifications

• Input Power: 220–240 V AC, single-phase, 50/60 Hz (configurable for 110–120 V AC).
• Power Capacity: 5 kVA minimum.
• Test Voltage: 50 V to 1000 V AC/DC, ±1% accuracy, <1% ripple.
• Test Current: Up to 10 A, ±1% accuracy.
• Cycle Control:
  • Programmable cycles: 1 to 100,000.
  • Cycle time: 0.1 s to 60 s per cycle.
  • Duty cycle: Configurable (e.g., 50% as per Clause 18.103).
• Waveform: Sinusoidal AC or DC pulses, 50 Hz to 1 kHz.

Environmental Control

• Temperature Chamber: -20°C to +85°C, ±1°C accuracy.
• Humidity: 20% to 95% RH, ±3% accuracy.
• Ventilation: Uniform air circulation for stable conditions.
• Insulation Monitoring: Real-time resistance measurement.

Test Fixtures

• Capacitor Mounting: Universal fixture for various sizes, using PTFE or ceramic.
• Connectors: High-voltage (≥5 kV), low-resistance, quick-release.

Control and Monitoring

• Interface: Touchscreen HMI or PC software for IEC 60335-2-79 testing.
• Data Acquisition: Logs voltage, current, temperature, and resistance at ≥100 Hz.
• Safety Features:
  • Emergency stop.
  • Overvoltage/overcurrent protection.
  • Interlock system and ground fault detection.

Performance

• Cycle Accuracy: ±0.1% for timing and count.
• Voltage Stability: ±1% under load.
• Test Duration: Supports 100,000 cycles (~48 hours at 1 s/cycle).
• Compliance: Verifies no damage, breakdown, or insulation failure per Clause 18.104.

Physical Specifications

• Dimensions: 1200 mm (W) x 800 mm (D) x 1500 mm (H).
• Weight: ≤300 kg.
• Construction: IP54-rated stainless steel or powder-coated enclosure.
• Mobility: Lockable casters.

Calibration and Maintenance

• Calibration: Annual, traceable to ISO/IEC 17025.
• Maintenance: Modular design, replaceable components, user manual included.

Safety and Compliance

• Electrical Safety: IEC 61010-1 compliant.
• EMC: IEC 61326-1 compliant.
• Environmental: RoHS and WEEE compliant.

Documentation and Support

• User Manual: Setup, operation, and maintenance guide.
• Test Report Template: For IEC 60335-2-79 compliance documentation.
• Warranty: 12 months, with optional extended support.

Optional Features

• Remote Monitoring: Cloud-based test tracking.
• Automated Analysis: Pass/fail evaluation software.
• Multi-Station Testing: Simultaneous testing of multiple capacitors.

Frequently Asked Questions (FAQ)

What is the purpose of the Capacitors Endurance Test Apparatus?

The apparatus tests capacitor durability in high-pressure cleaners, ensuring compliance with IEC 60335-2-79 Clauses 18.103 and 18.104 through cyclic charge-discharge testing.

Which capacitors can be tested with this equipment?

It supports capacitors from 0.1 µF to 100 µF, used in appliances covered by IEC 60335-2-79.

What environmental conditions can the apparatus simulate?

The apparatus maintains temperatures from -20°C to +85°C and humidity from 20% to 95% RH, per Clause 18.104 requirements.

How does the apparatus ensure safety during testing?

It includes an emergency stop, overvoltage/overcurrent protection, interlocks, and ground fault detection for safe operation.

Can the test apparatus handle automated testing?

Yes, it features programmable test sequences via a touchscreen HMI or PC software, with real-time data logging for IEC 60335-2-79 compliance.

How is the apparatus calibrated?

Annual calibration is performed, traceable to ISO/IEC 17025, ensuring accurate voltage, current, and temperature measurements.

What is the maximum test duration?

The apparatus supports continuous operation for 100,000 cycles, approximately 48 hours at 1 second per cycle.

Is the apparatus compliant with international standards?

Yes, it complies with IEC 61010-1 (electrical safety), IEC 61326-1 (EMC), and RoHS/WEEE directives.