USENS-T

Transformer UHF Internal Tank Valve Sensor

Real-Time Partial Discharge Detection for Transformer Tank Applications 

Designed for precision and durability, the UHF PD sensor accurately monitors partial discharge activity in oil-filled and dry-type transformers and reactors. Its high sensitivity ensures early detection of potential issues, enabling proactive maintenance and enhanced asset reliability.

Features
  • Highly Sensitive
  • Wide Band Frequency Response
  • IP65 Protection
  • Leak-Proof Sensor
  • Integrated Overvoltage Protection
  • High Dielectric Strength
  • Customized Design
Benefits
  • Enhanced Compatibility
  • Reliable and Safe Operations
  • Longer Operational Lifespan
  • Cost-Effective Monitoring
  • Low Signal-to-Noise Ratio
  • Rugged and Durable
Applications
  • Power Transformer PD Testing and Monitoring
  • Reactor PD Testing and Monitoring
  • Distribution Transformer PD Testing and Monitoring
  • Continuous Online PD Monitoring
  • Periodic PD Testing and Measurements
  • High Voltage Testing during Commissioning
Technical specifications
Frequency Response

Decoupling Range of 200 MHz– 2000 MHz

Mean Effective Height over 500 MHz-1500 MHz (mm)

> 6 mm

PD Output

N-Type Female connector with T Protector

Connector Circuit Impedance

50 Ω

Dimensions (D * H) in mm

120mm Dia * 130mm Height

Insertion depth of UHF antenna

47 mm

Sensor body material

Stainless steel

Standard Design for

Customized as per Transformer Flange Design (RM design and provide separate flange if needed)

Weight

<1.0 Kg

Installation Position

Transformer Tank, Inspection Cover, Transformer Dielectric Window

Oil Pressure

Up to 8 bar

Vibration Testing (IEC 60068-2-6)

20 sweeps of 9G force in 6 degree of freedom.

Ingress Protection (IP) (IEC 60529)

IP65

Ambient (Operating Temperature)

-40⁰C to +110 ⁰C

Storage Temperature

-40 ⁰C to +110 ⁰C

Operating Humidity

95% humidity at 50 ⁰C

Remarks

1. Use O-ring only, no gasket
2. Comes with protective case
3. SS304 and SS316 grade available based on request

Ordering Code

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230, Quebec, QC – G1N
4N7, CANADA