Photovoltaic Impulse Voltage Generator

The photovoltaic impulse voltage generator is designed as per 7.5.1 Impulse voltage test (type test) in IEC 62109-1 Safety of power converters for use in photovoltaic power systems –Part 1: General requirements and photovoltaic inverter impulse voltage test specified in GB/T 37408, which is capable of generating 1.2/50 μs impulse test waveform ranging from 0.5 kV to 25 kV. The source impedance covers two types: less than 2 ohm and 500 ohm, which can satisfy the clearances and solid insulation test requirement.

Standard：
IEC 60060-1 ” High-voltage test techniques – Part 1 General definitions and test requirements”
IEC 62109-1 “Safety of Power Converter for use in Photovoltaic Power SystemsPart 1: General requirements”

System configuration and main technical specification:
SUG1250-30KV impulse surge test system includes: 1.2/50μs impulse test generator and voltage waveform attenuator
• According to IEC/EN 61730-1, IEC/EN 61730-2 and IEC 60060-1 standards
• Voltage wave: 1.2/50μs
• Output voltage: 2~30kV
• Test capacitance: 2~150nF
• Output polarity: Positive or Negative
• Surge repetition: 20~9999 times
• Surge interval: 30~999 seconds

Circuit principle:

Circuit principle

Output waveform definition
voltage wave
Front time: T1=1.67T=1.2μs±30%
Half time: T2=50μs±20%

Output waveform

Normal working conditions:
• Ambient temperature: 10~35℃
• Relative temperature: 10%~65%
• Atmospheric pressure: 86~106KPa
• Rated working voltage: 220V±10% & 50/60Hz

Accessory:
• AC 220V single phase power cable (1pc)
• Standard test parts (1set)
• User manual

Touchscreen program interface:

Touchscreen program interface:

The picture above shows the initial interface. The first line is the function selection menu. Click directly to enter the corresponding function interface.

The current interface is the impulse voltage test function interface (“Impulse test” is white on a red background).

The white box in the upper left corner of the interface shows that the generator is a 1.2/50 generator. When you click on the blues boxes in the middle, the editing number table will appear, and you can edit the corresponding parameters for testing.