KPM SFRA

KPM SFRA Specification

Batteries Type
External power supply

Accuracy
0.2 dB

Resistant Feature
Shock and vibration resistant design

Usage & Applications
Transformer winding sweep frequency response analysis

Pressure
Ambient

Product Type
Sweep Frequency Response Analyzer (SFRA)

Material
ABS plastic & metallic enclosure

Measuring Voltage Range
Up to 20V peak-to-peak

Operating Temperature
0C to 50C

Frequency (MHz)
0.01 - 25 MHz

Insulation Box
Yes

Protection System
Overvoltage and current protection

Size
Portable

Color
White and Grey

Dimension (L*W*H)
430 250 280 mm

Weight
8.5 kg

Accessories Included
Carrying case, test leads, software CD, instruction manual

Data Storage
Internal memory with export feature

Software Compatibility
Windows PC application supported

Inputs
Multiple selectable channels

Printer
Inbuilt thermal printer

Compliance
Conforms to IEC standards

Test Leads
Banana type connectors

Display Type
Large color touchscreen display

Power Supply
100-240V AC, 50/60Hz

Connectivity
USB, Ethernet

About KPM SFRA

Sweep Frequency Response Analysis Test or in short SFRA Test can detect efficiently, displacement of transformer core, deformation and displacement of winding, faulty core grounds, collapse of partial winding, broken or loosen clamp connections, short circuited turns, open winding conditions etc.

How SFRA works?

Transformers consist of multiple complex networks of capacitances and resistors that can generate a unique signature when tested at discreet frequencies and plotted as a curve. The distance between conductors of the transformer forms a capacitance. Any movement of the conductors or windings will change this capacitance. This capacitance being a part of complex L (inductance), R (Resistance) and C (Capacitance) network, any change in this capacitance will be reflected in the curve or signature.

An initial SFRA test is carried out to obtain the signature of the transformer frequency response by injecting various discreet frequencies. This reference is then used for future comparisons.

Large Color Touchscreen Display

With its expansive, intuitive touchscreen, the KPM SFRA empowers users to operate the device effortlessly. Graphical data is rendered with clarity, aiding in accurate interpretation and efficient workflow-making diagnostics more streamlined.

Advanced Data Management & Connectivity

Data can be stored internally and easily exported via USB or Ethernet to a Windows PC application, ensuring compatibility with modern software infrastructure. The analyzer also features a built-in thermal printer for immediate results, further simplifying the analysis process.

High Accuracy & Robust Protection

Engineered for precision, the KPM SFRA delivers measurements with 0.2 dB accuracy across a broad frequency range of 0.01-25 MHz. The system is safeguarded with overvoltage and current protection, backed by shock and vibration-resistant design for dependable operation.

FAQ's of KPM SFRA:

Q: How does the KPM SFRA enhance transformer winding diagnostics?

A: The KPM SFRA enables thorough analysis of transformer winding conditions using sweep frequency response. Its high accuracy, wide frequency range, and graphical display help identify mechanical faults or deformation in windings quickly and reliably.

Q: What types of connections and data transfer options are available with this analyzer?

A: The device supports USB and Ethernet connectivity, allowing easy integration with PCs for data export and further analysis. Internal memory provides ample storage for results, which can be directly printed via the built-in thermal printer.

Q: When should I use the KPM SFRA for transformer testing?

A: It is recommended to use the KPM SFRA during transformer commissioning, routine maintenance, or troubleshooting to detect any potential mechanical changes or faults in the windings as early as possible.

Q: Where can the KPM SFRA be effectively used?

A: With its portable and rugged design, the KPM SFRA is suitable for substations, manufacturing plants, and field sites, ensuring reliable operation even in demanding environments due to its shock and vibration-resistant enclosure.

Q: What is the process for exporting and analyzing test data?

A: After conducting tests, you can save data in the device's internal memory, export it via USB or Ethernet, and utilize the included Windows PC application for advanced analysis and reporting.

Q: How does the built-in protection system benefit users during operation?

A: The analyzer features overvoltage and current protection, ensuring user safety and safeguarding the instrument against accidental surges or misuse during testing procedures.

Q: What accessories are supplied with the KPM SFRA?

A: Each unit comes with a carrying case, test leads, software CD, and instruction manual, providing everything required for immediate setup, operation, and data analysis.