
Partial discharge testing gets criticized as being too complicated- circuits have way too many components, there
DEMIKS/Isolation Transformers, one of the top manufacturers based in China, ensures high-quality protection from power surges and voltage fluctuations for devices through reliable isolation transformers. Tailored for different use cases, their isolation transformers provide the exceptional performance and reliability needed for your electrical applications.
Versatile Testing Applications: Conducts AC voltage withstand tests on electrical apparatus and insulation materials for industries, mines, and even for research institutes.
High-Quality Isolation Filters: Includes single-phase and three-phase transformers (50VA–800kVA), made with premium materials and advanced technology.
Power Supply Integration: Commonly used for isolation within power plants, industries, transport establishments, and any highly sophisticated instruments.
Anti-Interference Design: Serves purification supports and system stability for automation, telecommunication systems and precision measurement devices.
| Specifications of Isolation Transformer | |||
|---|---|---|---|
| Capacity | 50VA~800kVA | Phase | |
| Three-phase/Single-phase | |||
| Input Voltage | 10~380V(Customizable) | Output Voltage | 10~380V (Customizable) |
| Primary-Secondary Isolation Voltage | AC 3000V (Customizable) | Operating Frequency | 50~60Hz (Customizable) |
| Isolation Filter | |||
| Filter Quality Factor | >70 | Partial Discharge Background Level | <2pC |
| Insulation Level | 5kV/1min (No Discharge) | ||
| Attenuation Characteristics | 40kHz~100kHz>40dB, 100kHz~1MHz>50dB | ||
| Special products can be customized according to user requirements. |
Isolation transformers mitigate the effects of electrical noise and ground loops, while ensuring adherence to relevant industry standards. This article outlines their functions, advantages, and significance with regard to enhanced reliability, efficiency, and safety in different areas of the economy.

Partial discharge testing gets criticized as being too complicated- circuits have way too many components, there

Common mistakes in onsite PD testing are not arcane edge cases — they recur on energized
![Partial Discharge Test Equipment: Types, Selection & IEC 60270 Guide [2026]](https://demikspower.com/wp-content/uploads/2026/05/0-10.webp)
Choosing the right partial discharge test equipment for transformers, HV cables, GIS, or rotating machines is
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