KP1951S 1.2/50μs High Voltage Pulse Generator – IEC 60335-1 Compliant Impulse Test Equipment

KP1951S 1.2/50μs Pulse Generator: High-Voltage Impulse Tester for IEC 60335-1 Compliance

The KP1951S 1.2/50μs Pulse Generator is a professional high-voltage impulse tester engineered to meet the requirements of IEC 60335-1 (Household and similar electrical appliances – Safety – Part 1: General requirements), specifically Clause 14 on transient overvoltages. This instrument generates precise 1.2/50μs impulse waveforms and high-voltage DC (HVDC) signals to simulate lightning-induced interference in communication networks and transient overvoltages in distribution systems. It is ideal for testing the insulation withstand capability of information technology equipment, household appliances, and other low-voltage devices, ensuring they can endure potential transient surges without breakdown, flashover, or safety risks.

Designed and manufactured in strict accordance with IEC 60335-1 standards, the KP1951S uses advanced PLC (Programmable Logic Controller) technology for reliable operation. All parameters, including voltage, polarity, charge/discharge time, and test cycles, are easily set and monitored via a 7-inch color touch screen with bilingual Chinese/English interfaces. Built-in overcurrent and overvoltage protection (with continuously adjustable thresholds) enhances operator safety and instrument longevity. With dimensions of 530 mm (W) × 680 mm (D) × 400 mm (H), this compact, benchtop unit is well-suited for electrical safety laboratories, third-party certification bodies, and manufacturing quality control environments.

Why Choose the KP1951S 1.2/50μs High-Voltage Impulse Generator?

IEC 60335-1 Clause 14 mandates that appliances withstand transient overvoltages they may encounter during normal operation or external events like lightning strikes. Compliance is verified by applying impulse voltages to electrical clearances and creepage distances. The standard specifies a 1.2/50μs waveform (front time 1.2 μs ±30%, time to half-value 50 μs ±20%), as defined in referenced standards such as IEC 61180-1 or IEC 60060-1. This waveform replicates the characteristic shape of lightning-induced transients: a rapid rise followed by a slower decay.

The KP1951S delivers this exact waveform with a controlled error of ±20%, ensuring test results align closely with international requirements. Output voltage ranges from 0 to 12 kV, covering typical impulse levels for appliances rated up to 250 V (e.g., overvoltage categories II and III). The digital voltage display provides ±5% ±3 digits accuracy, allowing precise control and repeatable testing.

Key Technical Features and Advantages

• Standard Impulse Waveform: 1.2/50μs pulse (±20% error), fully compliant with IEC 60335-1 transient overvoltage testing specifications.
• High-Voltage Output: Adjustable from 0 to 12 kV, suitable for clearance testing across various appliance classes.
• Polarity Switching: Automatic or manual positive/negative alternation, supporting bidirectional impulse application as required by the standard (minimum 3 impulses per polarity).
• Flexible Timing Controls: Charge/discharge time from 1 to 999 seconds; test cycles from 0 to 999, enabling customized test sequences and endurance verification.
• Monitoring Capability: 1:1000 partial voltage ratio output for external oscilloscope connection, allowing real-time waveform verification and documentation.
• Advanced Safety Features: Adjustable overcurrent and overvoltage protection prevents damage to the device under test (DUT) or the generator itself.
• User-Friendly Interface: 7-inch color touch screen with intuitive menu-driven operation in Chinese and English, controlled by reliable PLC for consistent performance.
• Robust Construction: Compact dimensions and professional build quality make it practical for lab and production floor use.

These features ensure high accuracy, repeatability, and compliance, making the KP1951S a trusted choice for safety certification testing (e.g., CB Scheme, CCC, CE marking).

Core Applications of the KP1951S Impulse Tester

Household and Similar Appliances Safety Testing The primary application is IEC 60335-1 Clause 14 compliance for appliances such as refrigerators, washing machines, air conditioners, microwaves, and power tools. By applying the 1.2/50μs impulse to clearances, manufacturers verify insulation strength against transients, reducing risks of electric shock or fire.

Information Technology and Communication Equipment The generator simulates lightning interference in networks and switching transients in distribution systems, as required for IT equipment under related standards. It helps validate surge protection in devices like routers, servers, and power supplies.

Laboratory and Manufacturing Quality Assurance Electrical safety labs use the KP1951S for type testing and routine verification. Manufacturers integrate it into end-of-line QC processes to ensure batch consistency and regulatory conformity. When paired with high-voltage probes and oscilloscopes, it generates traceable test reports for certification audits.

Ensuring Test Accuracy, Safety, and Reliability

Accuracy is maintained through precise PLC control and waveform calibration. The ±20% waveform tolerance exceeds many application needs, and the 1:1000 monitoring output enables waveform capture for validation against IEC 60060-1 criteria. Safety is prioritized with multi-layer protection systems that interrupt operation if thresholds are exceeded, protecting both operators and equipment.

The KP1951S undergoes rigorous quality checks to deliver dependable performance in demanding test environments. Its design reflects expertise in high-voltage testing, drawing from established standards and industry best practices.