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APM 3000 is an On-line Partial Discharge Monitoring System (OPDM) for power transformers base on UHF partial discharge technologies. APM 3000 monitors and diagnoses various defects timely and accurately to support improved Condition Based Management (CBM) and to prevent serious breakdown of power transformers.
- Suitable for on-line partial discharge monitoring of extra-high voltage Power Transformer
- Distinguishes PD signals from similar noise signals by analyzing the characteristic of individual PD pulse signal UHF bandwidth at time domain and frequency domain
- Able to locate defects causing PD inside transformer by comparing UHF signals from numbers of sensors installed in the transformer
FEATURES
- UHF sensor with high senitivity
- Large dynamic range RF processing unit
- Various noise removal technology, anti-interference ability
- Artificial neural network technology
- IEC61850 protocol support
- High reliability and safety
Diagnosis Unit
| Item | Specification |
|---|---|
| Power | 90 to 240 VAC, 50/60Hz |
| Input | More than 250 channels |
| Analysis | Individual discharge signal is analyzed and its characteristics is mapped in 2-dimensional time-frequency space to make one group of discharge signals of one cause distinguished from others. |
| Diagnosis | Built in neural network engine classifies PD into 5 types: Protrusion Electrode, Floating Electrode, Defective Insulator, Free Moving Particle and Noise |
| Alarming | HMI, Email, IEC61850 |
| Graphic Tools | T-MF, PRPD, PRPS, Trend, and others |
| Channel Configuration | Three threshold levels for alarming can be configured for each channel individually |
| IEC61850 | Enabled |
| Remote Monitoring | Enabled |
| Communication | 1000Base-T Ethernet |
| Storage | Database |
| Self Test | Enabled |
Local Unit
| Item | Specification |
|---|---|
| Power | 90 to 240 VAC, 50/60Hz 120 to 370 VDC |
| Input | 8 UHF Channels, N-Type Connector |
| Sensitivity | Can detect discharge less than 5 pC within monitoring area of GIS/GIB |
| Input Bandwidth |
Wide Bandwidth 100 ~ 2000MHz |
| Dynamic Input Range | - 65 to 0 dBm |
| Band Pass Filter | Combination of 4 LPF and 4 HPF |
| Data Acquisition | Individual Discharge Signal Shape in Time Domain and Frequency Domain |
| Noise Gating | Enabled (External Noise Sensor) |
| Communication | Fiber Optic (100Base-FX) |
| Notification | 4 x LED Status Indicators |
| Operating Temperature | -25°C to 55°C |
| Operating Humidity |
100% |
| Enclosure Rating |
IP54 |
| Dimensions | 450 x 703 x 300 (W x H x D) mm |
System Configuration
