Introduction to High Voltage Impulse Generators

High Voltage Impulse (HVI) generators are specialized test instruments designed to simulate transient overvoltage events, such as lightning strikes, switching surges, and electrostatic discharges (ESD). These devices are critical for evaluating the immunity and robustness of electrical and electronic equipment under standardized surge conditions. The LISUN SG61000-5 Generador de sobretensiones is a state-of-the-art system engineered to comply with international standards, including IEC 61000-4-5, EN 61000-4-5, and GB/T 17626.5, ensuring precise and repeatable surge testing across multiple industries.

Operating Principles of Surge Immunity Testing

Surge immunity testing involves subjecting a device under test (DUT) to high-energy transient pulses to assess its resilience against real-world electrical disturbances. The LISUN SG61000-5 generates standardized waveforms, including:

• Combination Wave (1.2/50 µs voltage wave and 8/20 µs current wave): Simulates lightning-induced surges.
• Ring Wave (100 kHz, 6.4/16 µs): Represents switching transients in power distribution systems.

The generator employs a high-energy capacitor discharge mechanism, where stored energy is released through a pulse-forming network (PFN) to produce the required surge waveform. The system’s adjustable parameters—such as voltage (up to 6 kV), polarity (positive/negative), and phase synchronization—allow for comprehensive testing under controlled conditions.

Key Specifications of the LISUN SG61000-5 Surge Generator

Aplicaciones específicas del sector

1. Lighting Fixtures and Industrial Equipment

Surge testing ensures that lighting systems (e.g., LED drivers, HID lamps) and industrial machinery (e.g., motor drives, PLCs) withstand power grid disturbances. The SG61000-5 verifies compliance with IEC 61547 for lighting immunity.

2. Household Appliances and Power Tools

Appliances such as refrigerators, washing machines, and power drills must endure transient surges without malfunction. Testing aligns with IEC 60335-1 for safety certification.

3. Medical Devices and Intelligent Equipment

Medical electronics (e.g., patient monitors, imaging systems) and smart devices (IoT sensors, automation controllers) require surge immunity to prevent data corruption or hardware failure. The SG61000-5 meets IEC 60601-1-2 for medical EMC.

4. Communication and Audio-Video Equipment

Telecom base stations, routers, and AV systems undergo surge testing per ITU-T K.21 and IEC 61000-4-5 to ensure uninterrupted operation.

5. Automotive and Rail Transit

Vehicle electronics (ECUs, infotainment) and railway signaling systems are tested for ISO 7637-2 and EN 50121-3-2 compliance.

6. Aerospace and Power Equipment

Spacecraft avionics and power distribution systems (transformers, relays) are validated against DO-160 and IEEE C62.41 surge standards.

Competitive Advantages of the LISUN SG61000-5

1. Precision Waveform Generation: The PFN ensures accurate 1.2/50 µs and 8/20 µs waveforms with minimal distortion.
2. Secuenciación automatizada de pruebas: Programmable surge counts and intervals reduce manual intervention.
3. Enhanced Safety Features: Overcurrent protection, grounding interlocks, and fail-safe mechanisms prevent equipment damage.
4. Cumplimiento de múltiples normas: Supports IEC, EN, GB/T, and ISO standards for global market access.
5. Diseño modular: Optional CDNs (Coupling/Decoupling Networks) for signal and data line testing.

Validación científica y estudios de casos

A 2022 study on surge immunity in photovoltaic inverters demonstrated that the SG61000-5 reliably replicated real-world surge events, with waveform deviations below 5%—exceeding IEC 61000-4-5 requirements. In another application, a tier-1 automotive supplier used the generator to validate CAN bus resilience, achieving ISO 7637-2 compliance with zero false triggers.

Sección FAQ

Q1: What is the maximum test voltage for the SG61000-5?
The generator delivers up to 6 kV in open-circuit conditions, with a corresponding current of 3 kA in short-circuit mode.

Q2: Can the SG61000-5 test both AC and DC power lines?
Yes, the integrated CDN supports surge injection into AC (50/60 Hz) and DC (up to 250 V) power supplies.

Q3: How does phase synchronization improve test accuracy?
Phase control (0°–360°) ensures surges are applied at the peak or zero-crossing of the AC waveform, simulating real-world transients.

Q4: Is the SG61000-5 suitable for high-speed data line testing?
Optional CDNs are available for Ethernet, USB, and RS-485 interfaces, per IEC 61000-4-5 Annex B.

Q5: What maintenance is required for long-term reliability?
Annual calibration and capacitor bank inspections are recommended to maintain waveform fidelity.

This technical overview underscores the LISUN SG61000-5’s role in ensuring surge immunity across diverse industries, supported by rigorous standards compliance and advanced engineering.