AC Partial Discharge Testing with Microwave Detection
The ECG KOKUSAI ACPD-05X is an AC partial discharge tester designed for insulation evaluation of motors, transformers, coils, and other wound components.
The ACPD-05X uses a microwave patch antenna to directly detect electromagnetic waves generated by partial discharge. Because the antenna is positioned near the test coil, partial-discharge activity can be evaluated without relying solely on signals through the test circuit.
5,000 Vrms / 500 VA
Maximum AC test output
-90 to -30 dBm
Partial-discharge detection sensitivity
50 to 200 Hz
Selectable test-frequency range
Microwave Antenna
Direct electromagnetic-wave detection
During testing, applied AC voltage and discharge signals can be displayed in real time. Graph-analysis functions support evaluation of discharge behavior as voltage changes and allow stored test graphs to be reviewed after testing.
Parallel I/O, RS-232C, and USB interfaces support test control and test-data input and output, helping integrate partial-discharge evaluation into inspection workflows.
For broader partial-discharge test selection,
see the Partial Discharge Testing Solutions →
Microwave Partial Discharge Detection
A microwave patch antenna directly detects electromagnetic waves generated by partial discharge near the test coil.
Up to 5,000 Vrms / 500 VA
Provides AC test output up to 5,000 Vrms with a maximum rated capacity of 500 VA.
Real-Time Discharge Visualization
Displays applied AC voltage and discharge signals in real time so discharge behavior can be observed during testing.
Automatic Partial Discharge Testing
Supports automated partial-discharge test workflows and evaluation of discharge behavior as the applied voltage changes.
Discharge Characteristic Analysis
Provides applied-voltage versus partial-discharge and Qmax characteristic graphs together with cumulative discharge-occurrence analysis.
Wide Test-Frequency Setting
Supports 50 Hz and 60 Hz operation, with test frequency configurable from 50 to 200 Hz in 1 Hz steps.
Leakage-Current Detection
Supports leakage-current cutoff settings from 1 to 25 mA in 1 mA steps or 100 mA.
External Control Interfaces
Parallel I/O, RS-232C, and USB support test control and test-data input and output.
Need impulse-based partial discharge testing? See the ECG KOKUSAI DWIT-05PD or DWX-05PD for impulse winding and partial-discharge evaluation.
Inverter motor insulation testing
Automotive motor coil testing
Transformer insulation testing
Coil partial-discharge testing
AC withstand and partial-discharge evaluation
Production-line insulation inspection
ACPD-05X Specifications
| Maximum Test Voltage / Capacity | 5,000 Vrms / 500 VA |
|---|---|
| Minimum Voltage Step | 4 Vrms |
| Test Frequency | 50 / 60 Hz; configurable from 50 to 200 Hz in 1 Hz steps |
| PD Detection Sensitivity | -90 to -30 dBm |
| Detection Result Display | -90 to -30 dBm represented as a 100-level display |
| Detection Charge Range | 50 pC or more as a relative level |
| Antenna Cable | Standard 2 m SMA coaxial cable |
| Voltage Display | 0 to 5,000 Vrms |
| Voltage Measurement Accuracy | ±1.5% of reading |
| Leakage Current Cutoff | 1 to 25 mA in 1 mA steps, or 100 mA |
| External Interfaces | Parallel I/O, RS-232C, USB |
| Input Power | AC 100 to 240 V ±5%, 50/60 Hz, 10 A |
| Operating Environment | 23°C ±5°C, 20% to 80% RH |
| Dimensions / Weight | 430 (W) × 177 (H) × 442 (D) mm / Approx. 22 kg |
