APM7000 Cable PD Monitoring & Diagnosis System


APM7000 is the most effective insulation diagnosis system that analyzes the cable’s failure phenomenon due top artial discharge in real time to prevent accidental power failure.

  • Localized defects of insulation system cause Partial Discharge. Electric trees which is made by Partial Discharge can lead to insulation breakdown.
  • Partial Discharge measurement is useful method to decide how much systems are degraded by electrical and thermal stress, manufacturing defects and installation errors in cable insulation system.
  • APM7000 is designed as compact size for portable PD measurement and enabled to operate for continuous monitoring without computer. This equipment aims at preventing electrical accidents of cable through identifying insulator faults in advance.


  • [Key Features]
  • Easy to carry
  • Battery can be used
  • Auto save without PC
  • Remote control
  • [Software Features]
  • Real-Time Monitoring
  • Trend Analysis
  • Time-Domain Analysis
  • Frequency Domain Analysis
  • Time Difference Analysis
  • PRPD Pattern Analysis
  • Micro SD Card for data saving
  • Battery (Optional)
  • LAN Interface
  • Optic Module (Optional)
  • Report


Item Specification
Sensor HFCT
Sensor Sensitivity Below 5pC
Dimension 350x270x110mm or
415x334x221 mm
Weight 4Kg or 8.5Kg
Sampling 100MS/S, 12Bits
Frequency BW 1~50MHz
Channles 4 or 8 Channels
(PD 3/6Ch & Noise 1/2Ch)
Amp -18~30dB
Power AC 100~230VAC/DC
Memory 32GB Micro SD for standalone monitoring without Notebook
Communication Interface Gigabit Ethernet

Overview on Analysis Mode

Item Specification
Frequency Analysis Mode Detection Frequency: 1~50MHz
Detection Frequency tuning BW: ±2MHz
Amplifier Amplification Rate Adjustment: up to 30dBm
Spectrum Analysis
Noise Gating Function
3-Phase simultaneous measurement
PD Pulse Analysis Mode Sampling: 100MS/s
Amplifier Amplification Rate Adjustment: up to 30dBm
3-Phase simultaneous measurement
Time Domain Analysis Mode 3-Phase simultaneous measurement
Time error between phases: less than 10ns
Synchronization External Sync20~300Hz
Power Source Sync

Basic Configuration and Connecting Diagram