DEMIKS (Shanghai) Supplies Complete PD Test Equipment for Suzhou Kelunte Power to Verify Power Product Electrical Performance

Power supply products are core components for power grids, energy storage systems and industrial power distribution. The insulation performance and partial discharge (PD) indicators directly dominate the long-term operational reliability of power equipment. Hidden insulation defects inside power units will trigger partial discharge under operating voltage. Continuous partial discharge erodes insulation materials gradually, which eventually leads to insulation breakdown, short circuit or catastrophic burnout, resulting in production shutdown and safety hazards. For this reason, high voltage electrical performance test and partial discharge inspection are mandatory quality control procedures before product delivery.

Suzhou Kelunte Power Technology Co., Ltd focuses on R&D and manufacturing of power supply products. To guarantee product quality and build its in-house electrical performance laboratory, the company purchased a complete set of compact partial discharge shielded test devices. DEMIKS Power Technology (Shanghai) Co., Ltd, a professional manufacturer of high voltage test instruments, delivered the full PD shielded test system for Suzhou Kelunte Power, to conduct partial discharge test, power frequency withstand voltage test and other high voltage electrical performance inspections on power supply products.

Why Power Supply Products Require High-Voltage Partial Discharge Test?

1. Detect invisible insulation defects in advance Air voids, gaps and material impurities can exist in windings, potting compound, insulation gaskets and terminals of power supplies. These invisible defects generate partial discharge under working voltage. Long-term PD accelerates insulation aging and shortens equipment service life. Visual inspection cannot capture such subtle defects. Only a partial discharge shielded test unit can detect ultra-low pico-coulomb (pC) PD signals under low electromagnetic interference shielding environment.
2. Meet compliance requirements of global industry standards Power and energy storage power supplies require mandatory partial discharge tests for domestic and international certification. Products must pass PD test, high voltage withstand test and other electrical tests to obtain CE, GB and other certifications for domestic and overseas market access. Valid PD test reports are essential for market approval.
3. Reduce on-site failure risks High voltage partial discharge screening at factory stage filters out nonconforming units before shipment. It prevents field breakdown failures after delivery, cutting huge costs from after-sales repair, product recall and project outage, and protects brand reputation.

Key Advantages of DEMIKS Compact Partial Discharge Shielded Test System

The delivered complete compact PD shielded test device integrates shielding chamber, high voltage test transformer, PD signal acquisition module and intelligent control software:

✅ Built-in shielding cavity suppresses external electromagnetic noise, supporting high-precision pC-level partial discharge measurement.

✅ All-in-one touch control system realizes automatic voltage boosting, withstand timing, real-time PD curve plotting and automatic standardized test report saving.

✅ Compact footprint for factory laboratory installation, no large shielding room required, greatly reducing laboratory construction investment.

✅ Supports combined test of power frequency withstand voltage and partial discharge, completing full electrical performance inspection of power supplies in one station.

✅ Fully compliant with GB/T and IEC high voltage test standards, test data is acceptable for product certification submission.

With DEMIKS partial discharge shielded test equipment, Suzhou Kelunte Power implements routine factory inspection for all self-developed power supplies. Every finished unit undergoes strict high voltage PD screening to ensure stable insulation and qualified partial discharge performance, delivering highly reliable power products to downstream customers.

DEMIKS Power Technology (Shanghai) specializes in R&D and manufacturing of high voltage test equipment. Our product portfolio covers partial discharge shielded systems, lightning impulse generators, series resonance withstand voltage devices and other complete high voltage testing instruments. We provide customized partial discharge testing solutions for manufacturers of power supplies, switch-gears, current transformers and insulation components, helping electrical equipment enterprises implement strict quality control and expand global markets.