Product Introduction
MOEORW-WWP70 is an intelligent integrated partial discharge sensor designed specifically for medium-voltage switchgear and ring main units. It adopts dual detection technology of TEV (Transient Earth Voltage) and AA (Airborne Ultrasonic), which can simultaneously capture voltage pulses on the cabinet surface and acoustic signals generated by internal insulation discharge, accurately identifying early defects such as insulation aging and poor contact.
The modular daisy-chain architecture allows multiple devices to share a single power and data line. Combined with the strong magnetic adsorption design, on-site personnel can complete live installation and debugging without professional tools. The built-in signal conditioning and digital processing unit directly outputs standardized Modbus 485 data, which can be seamlessly connected to various power monitoring systems, providing a reliable basis for equipment status assessment and preventive maintenance.
Product Parameter (specification)
|
Detection Type |
Parameter |
Value |
|
AA Ultrasonic |
Dynamic Range |
0-65dBuV |
|
Center Frequency |
40KHz |
|
|
Linearity Error |
≤±15% |
|
|
TEV |
Dynamic Range |
0-65dBmV |
|
Bandwidth |
3MHz-100MHz |
|
|
Linearity Error |
≤±10% |
|
|
Communication |
Interface |
RJ45 Ethernet |
|
Protocol |
Modbus RTU |
|
|
Power Supply |
DC 24V |
Daisy-chain |
|
Installation |
Magnetic (Cabinet Surface) |
Non-intrusive |
|
Environment |
Temperature: -40℃~85℃, Humidity: 5%~95% non-condensing |
Product Features
- Tool-free magnetic installation, 10-second deployment without power shutdown
- Daisy-chain Ethernet design, single cable for power and data transmission
- Built-in logarithmic detection and peak acquisition, real-time PD feature output
- Supports up to 32 sensors cascading for full substation switchgear monitoring
- CNC aluminum housing + epoxy potting, stable operation from -40℃ to 85℃
Product Application
- 10kV/35kV indoor switchgear substations continuous online monitoring
- Ring main unit (RMU) partial discharge real-time detection
- Distribution network cabinet insulation status assessment
- Power plant auxiliary power system switchgear monitoring
- Industrial park power distribution room preventive maintenance
Company Qualifications
FAQ
Q1: How many sensors can be connected in a single daisy chain?
A: Up to 32 sensors can be cascaded on one 24V DC power line, with a maximum communication distance of 1000 meters.
Q2: Does it require additional signal processing equipment?
A: No. The sensor has built-in logarithmic detection and peak acquisition circuits, directly outputs Modbus RTU data, and can be connected to SCADA systems without extra modules.
Q3: Can it be installed on live equipment?
A: Yes. The non-intrusive magnetic mount design allows 10-second installation without power shutdown, no need to open the switchgear cabinet.
Q4: What is the minimum detectable partial discharge level?
A: It can detect TEV signals as low as 1dBmV and AA signals as low as 2dBuV, effectively identifying early insulation defects.
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